Kereskedelmi, irodai és ipari

Product Name: 6pcs USB DC/DC 5V to 3.3V Multipurpose Voltage Regulator Buck Module for esp8266 breadboard Zigbee FPGA CPLD Development Board
 
 
 
Packing list:
6 PCS Multipurpose (3 functions) USB DC 5V to 3.3V Voltage Regulator  Module
 
 
 
Description:
 
USB male A interface Multifunction(Multipurpose) DC/DC 5V to 3.3V Voltage Regulator module
 
Input DC 4.5-7V(USB  male interface  input OR 2.54mm Pin input)
 
output: 3.3V/800mA (load current can't more than 800 mA)
 
3 functions : USB to 3.3V;USB to 5V(5V to 5V);5V to 3.3V
 
PCB Size: 25x15mm
 
 
Applications:
raspberry pi/banana pi/esp8266
Arduiuo UNO MEGA2560 DUE 
AVR Atmel PIC STM32 C8051 MSP430
Zigbee CC2530
Wireless module : Nrf24l01 Nrf24lE1 CC1101 CC2500 SI4432 SI4463
FPGA/CPLD:Altera EPM240/EPM570/EP4CE6; Xilinx XC2C64A
Wireless communication equipment
 
 

Product Name: 6pcs USB DC/DC 5V to 3.3V Multipurpose Voltage Regulator Buck Module for esp8266 breadboard Zigbee FPGA CPLD Development Board
 
 
 
Packing list:
6 PCS Multipurpose (3 functions) USB DC 5V to 3.3V Voltage Regulator  Module
 
 
 
Description:
 
USB male A interface Multifunction(Multipurpose) DC/DC 5V to 3.3V Voltage Regulator module
 
Input DC 4.5-7V(USB  male interface  input OR 2.54mm Pin input)
 
output: 3.3V/800mA (load current can't more than 800 mA)
 
3 functions : USB to 3.3V;USB to 5V(5V to 5V);5V to 3.3V
 
PCB Size: 25x15mm
 
 
Applications:
raspberry pi/banana pi/esp8266
Arduiuo UNO MEGA2560 DUE 
AVR Atmel PIC STM32 C8051 MSP430
Zigbee CC2530
Wireless module : Nrf24l01 Nrf24lE1 CC1101 CC2500 SI4432 SI4463
FPGA/CPLD:Altera EPM240/EPM570/EP4CE6; Xilinx XC2C64A
Wireless communication equipment
 
 

Product Name:
60W Step-Up DC-DC Converter Module 3.7-19V to 5V 6V 9V 12V 15V 24V for Arduino NANO UNO esp8266 raspberry pi
Packing list : 1 PCS 60W High-Power DC-DC Step-Up Boost Converter Board
Features:
1. DC DC Boost Converter Module working frequency 600KHZ
2. Up to 92% Efficiency (usually is 75% -91% )
3. Quiescent current: about 1MA
4. Over Temperature shutdown, input under-voltage protection and short circuit protection.
5. Operating temperature range : -40~ 85 Degrees Celsius
6. Operating temperature range : -40~ 85 Degrees Celsius
7. Size:33mm*33mm*14mm
8. Weight:13.6g
OUTPUT :5V
Measurement results are for reference only
Input Voltage

Input Current

Output Voltage

Output Current
3.7V

4.56A

5V

3.00A
4.2V

4.00A

5V

3.00A
4.5V

4.40A

5V

3.50A
OUTPUT:6V
Measurement results are for reference only
Input Voltage

Input Current

Output Voltage

Output Current
3.7V

5.90A

6V

3.00A
4.2V

4.90A

6V

3.00A
4.5V

5.00A

6V

3.30A
5V

5.46A

6V

4.00A
OUTPUT:9V
Measurement results are for reference only
Input Voltage

Input Current

Output Voltage

Output Current
3.7V

5.80A

9V

2.00A
4.2V

6.40A

9V

2.50A
4.5V

6.60A

9V

2.80A
5V

7.50A

9V

3.50A
6V

6.90A

9V

4.00A
7.5V

6.70A

9V

5.00A
OUTPUT:12V
Measurement results are for reference only
Input Voltage

Input Current

Output Voltage

Output Current
3.7V

5.90A

12V

1.50A
4.2V

5.80A

12V

1.70A
4.5V

6.40A

12V

2.00A
5V

7.30A

12V

2.50A
6V

7.00A

12V

3.00A
7.5V

7.30A

12V

4.00A
9V

6.60A

12V

4.50A
10V

6.50A

12V

5.00A
OUTPUT:15V
Measurement results are for reference only
Input Voltage

Input Current

Output Voltage

Output Current
3.7V

6.20A

15V

1.20A
4.2V

6.10A

15V

1.40A
4.5V

6.50A

15V

1.60A
5V

7.30A

15V

2.00A
6V

6.40A

15V

2.20A
7.5V

6.80A

15V

3.00A
9V

6.50A

15V

3.50A
10V

6.50A

15V

4.00A
12V

6.00A

15V

4.50A
OUTPUT :24V
Measurement results are for reference only
Input Voltage

Input Current

Output Voltage

Output Current
9V

4.90A

24V

1.62A
12V

4.40A

24V

2.00A
14.8V

4.20A

24V

2.42A
18V

4.30A

24V

2.85A
Shell parameters(Need to be purchased separately):
Material : PC/ABC
External size : 42*41*21MM
Internal size : 38*36*18MM
Weight :10gram

Module No.:  TB317
  
Packing list:
 
1 PCS 3-6V to 6V with Switch Boost Modules
 
 
Description:
 
Input voltage 2.8 - 6V, output 6V (deviation -5% )
Maximum input current:  1.5A
Long-term work Current : 1A 
Conversion efficiency : 90%
 
PCB size : 25MM x 15MM
 
Start Voltage 2.8V, Output Current 100MA
INPUT 3V   1A; OUTPUT 6V 430MA
INPUT 3.3V 1A; OUTPUT 6V 490MA
INPUT 3.7V 1A; OUTPUT 6V 550MA
INPUT 4.5V 1A; OUTPUT 6V 670MA
INPUT 5V   1A; OUTPUT 6V 750MA
 
This is with on/off switch voltage boost module.The master chip is FP6291GLR
Can used  the input voltage (VIN or GND)control  the switches,also use MCU IO control the switches.
Control current is very small, MCU IO port can be directly controlled. Including micro-controller : ARDIUNO UNO MEGA2560 AVR STM32 ARM PIC AT89C51 STC MSP430 FPGA CPLD etc.
 
When the EN pin  = GND(OR MCU LOW level),the boost module is working properly;
When the EN pin  = VIN(or MCU HIGH level,3.3V/5V) OR Not Connected(or MCU High impedance),
the boost module into standby mode, stops working, the output voltage is 0V(Can measure the output voltage is 500~800MV, which is inductive output voltage,you  does not have to bother).
 
 
 
 
 
 Applications
Battery powered equipment
Wirels mouse  Wireless keyboard
Motor LED
Camera, Video camera
VCR
PDA
LED Lighting
Wireless communication equipment
MP3/MP4 player
Audio equipment
 

Module No.:  TB317
  
Packing list:
 
1 PCS 3-6V to 6V with Switch Boost Modules
 
 
Description:
 
Input voltage 2.8 - 6V, output 6V (deviation -5% )
Maximum input current:  1.5A
Long-term work Current : 1A 
Conversion efficiency : 90%
 
PCB size : 25MM x 15MM
 
Start Voltage 2.8V, Output Current 100MA
INPUT 3V   1A; OUTPUT 6V 430MA
INPUT 3.3V 1A; OUTPUT 6V 490MA
INPUT 3.7V 1A; OUTPUT 6V 550MA
INPUT 4.5V 1A; OUTPUT 6V 670MA
INPUT 5V   1A; OUTPUT 6V 750MA
 
This is with on/off switch voltage boost module.The master chip is FP6291GLR
Can used  the input voltage (VIN or GND)control  the switches,also use MCU IO control the switches.
Control current is very small, MCU IO port can be directly controlled. Including micro-controller : ARDIUNO UNO MEGA2560 AVR STM32 ARM PIC AT89C51 STC MSP430 FPGA CPLD etc.
 
When the EN pin  = GND(OR MCU LOW level),the boost module is working properly;
When the EN pin  = VIN(or MCU HIGH level,3.3V/5V) OR Not Connected(or MCU High impedance),
the boost module into standby mode, stops working, the output voltage is 0V(Can measure the output voltage is 500~800MV, which is inductive output voltage,you  does not have to bother).
 
 
 
 
 
 Applications
Battery powered equipment
Wirels mouse  Wireless keyboard
Motor LED
Camera, Video camera
VCR
PDA
LED Lighting
Wireless communication equipment
MP3/MP4 player
Audio equipment
 

Below item is powered by eletechsup Ltd.
 
Product Name:  Dual Output Voltage Module 2-5V to 6V -6V DC DC Step up Boost Converter Board Power supply
  
Packing list:
 
1 PCS 3V-5V TO ±6V Step-up Boost Dual voltage Module 
 
 
Description:
   
Input voltage DC 3 ~ 5V,output DC ±6(Deviation is ±5% ) 
Maximum input current 2A
Maximum output current : Vo is 1A,-Vo is 200mA
Quiescent current: 3-4mA
DC DC Boost Converter Module working frequency 400kHz.
Operating temperature range : -40~ 125 Degrees Celsius
Storage temperature range : -65~ 150 Degrees Celsius
2.54mm pin pitch,for MCU Development Board Breadboard friendly.
Size(Does not include pin) : 25 x 16.3 x 6.6mm
Weight :3.4g
       
Internal Optimize Power MOSFET 
High efficiency up to 90%  
Built in Frequency Compensation
Built in Soft-Start Function 
Built in Thermal Shutdown Function 
Built in Current Limit Function 
    
Note:
1 Due to the diode partial pressure, the voltage of -Vo is lower than Vo
2 In order to obtain a more stable voltage, it is recommended that the output is greater than 1MA
3 -Vo cannot be used alone, or no voltage output.But you can just use Vo 
  
 
Applications
    
ADC/DAC/Operational Amplifier 
RS232 RS485 RS422 Bus
Audio equipment
LCD power supply
Instrumentation equipment
MCU Board
Motor Power
      
Attention :
    
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
  
Q & A:
  
Q : Why output voltage is less than the nominal voltage
A : Input power supply power is too low.Test the input voltage with a multimeter,a t this time of the input voltage is very low
 
 

Below item is powered by eletechsup Ltd.
 
Product Name:  Dual Output Voltage Module 2-5V to 6V -6V DC DC Step up Boost Converter Board Power supply
  
Packing list:
 
1 PCS 3V-5V TO ±6V Step-up Boost Dual voltage Module 
 
 
Description:
   
Input voltage DC 3 ~ 5V,output DC ±6(Deviation is ±5% ) 
Maximum input current 2A
Maximum output current : Vo is 1A,-Vo is 200mA
Quiescent current: 3-4mA
DC DC Boost Converter Module working frequency 400kHz.
Operating temperature range : -40~ 125 Degrees Celsius
Storage temperature range : -65~ 150 Degrees Celsius
2.54mm pin pitch,for MCU Development Board Breadboard friendly.
Size(Does not include pin) : 25 x 16.3 x 6.6mm
Weight :3.4g
       
Internal Optimize Power MOSFET 
High efficiency up to 90%  
Built in Frequency Compensation
Built in Soft-Start Function 
Built in Thermal Shutdown Function 
Built in Current Limit Function 
    
Note:
1 Due to the diode partial pressure, the voltage of -Vo is lower than Vo
2 In order to obtain a more stable voltage, it is recommended that the output is greater than 1MA
3 -Vo cannot be used alone, or no voltage output.But you can just use Vo 
  
 
Applications
    
ADC/DAC/Operational Amplifier 
RS232 RS485 RS422 Bus
Audio equipment
LCD power supply
Instrumentation equipment
MCU Board
Motor Power
      
Attention :
    
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
  
Q & A:
  
Q : Why output voltage is less than the nominal voltage
A : Input power supply power is too low.Test the input voltage with a multimeter,a t this time of the input voltage is very low
 
 

Product Name:5V 12V 1-4CH Flip-Flop Latch Relay Module Bistable Self-locking Switch Low pulse trigger Board for Arduino Smart home LED  Motor
Packing list:
    1 pcs  1 Channel DC 5V Self-locking Relay Module(version 1)
or 1 pcs  1 Channel DC 12V Self-locking Relay Module(version 2)
or 1 pcs     4 Channel DC 5V  Self-locking  Relay Module(version 3)
Please select the version you need
 
  
Description:
 
1 Channel DC 5V Self-locking Relay Module(version 1) :
 
Working voltage: DC 5V
Working current: 70MA
Standby current: 1UA
Load current: AC 250V / 10A, DC 30V / 10A
Trigger mode: Low pulse trigger
Size: 35mm * 16mm  * 18.5mm (L * W * H),  Very small size    
Weight: 13.5 g
    
  
1 Channel DC 12V Self-locking Relay Module(version 2) :
 
Working voltage: DC 6-24V
Working current: 60-70MA
Standby current: 1UA
Load current : AC 250V/10A, DC 30V/10A
Trigger mode: Low pulse trigger
Size: 48mm * 16mm  * 18.5mm (L * W * H),  Very small size    
Weight: 14.3 g
     
  
4 Channel DC 5V Self-locking Relay Module(version 3) :
 
Working voltage: DC 5V
Working current: 1 relay 70MA;2  relay  140MA; 3  relay  210MA; 4  relay  280MA
Standby current: 4UA
Load current: AC 250V / 10A, DC 30V / 10A
Trigger mode: Low pulse trigger
Size: 65mm * 42mm  * 19mm (L * W * H),  Small size    
Weight: 52 g
     
  
USE 1:
By default, the relay is release, press the trigger button, the relay pull, press again, the relay release, the third press, the relay pull, and so on.
 
USE 2:
By default, the relay is release, MCU output low-pulse(0.3-1seconds), the relay pull, low-pulse again, the relay release, the  third low-pulse, the relay pull, and so on.
 
Module interface:
1. VCC: positive power supply (VCC)
2. GND: negative power supply (GND)
3. T  : Low pulse trigger
  
Relay outputs:
1. NO: normally open relay interface
2. COM: Common Interface Relays
3. NC: normally closed relay interface
 
  
USE : By default, the relay is release, press the trigger button, the relay pull, press again, the relay release, the third press, the relay pull, and so on
 
Typical applications:
Automotive electronics
Motor
LED
Smart Home
Emergency lighting
MCU development board
Toy car

 
 
 
 

 
Product Name :       3.3A mini-size High-PowerDC 9V 12V 15V to 6V dc dc power supply converter module Step-Down Buck Voltage Regulator Module     
    
  Packing list:
 
1 PCS DD2712SA_6V  3.3A 7.5V-27V to 6V DC DC Step-Down Buck Converter Module 
    
  
 
Description: 
      
Input voltage 7.5~27V,output 6V
 
Maximum output current 2.3A,Short time maximum output current 3.3A
 
DC-DC Step-Down Converter module working frequency 900KHz. efficiency is 77-92% .
 
Quiescent current: about 250uA
 
Overtemperature shutdown, Under-Voltage Lockout (UVLO), BS-voltage protection, and short circuit protection.
 
Operating Temperature :–20°C to 85°C
 
Size : 25 x 15 x 6.3mm
 
Weight : 2.4g
 
   
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
  
 
Applications:
  
12V 9V TO 6V lithium battery-powered systems
6V Motor ​Toy
WIFI esp8266 HC-12 Bluetooth Module
CCTV camera
Electric toys
Wireless Module:Nrf24l01 CC1101 CC2500 CC2530 Zigbee
Smart home / home automation
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
FM radio
Battery powered equipment
Audio amplifier
 
 
 
 

 
Product Name :       3.3A mini-size High-PowerDC 9V 12V 15V to 6V dc dc power supply converter module Step-Down Buck Voltage Regulator Module     
    
  Packing list:
 
1 PCS DD2712SA_6V  3.3A 7.5V-27V to 6V DC DC Step-Down Buck Converter Module 
    
  
 
Description: 
      
Input voltage 7.5~27V,output 6V
 
Maximum output current 2.3A,Short time maximum output current 3.3A
 
DC-DC Step-Down Converter module working frequency 900KHz. efficiency is 77-92% .
 
Quiescent current: about 250uA
 
Overtemperature shutdown, Under-Voltage Lockout (UVLO), BS-voltage protection, and short circuit protection.
 
Operating Temperature :–20°C to 85°C
 
Size : 25 x 15 x 6.3mm
 
Weight : 2.4g
 
   
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
  
 
Applications:
  
12V 9V TO 6V lithium battery-powered systems
6V Motor ​Toy
WIFI esp8266 HC-12 Bluetooth Module
CCTV camera
Electric toys
Wireless Module:Nrf24l01 CC1101 CC2500 CC2530 Zigbee
Smart home / home automation
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
FM radio
Battery powered equipment
Audio amplifier
 
 
 
 

Product Name:8-button Low High level Push Buttons module 8 Keyboard Keypad for Arduiuo DUE Breadboard Leonardo ZERO Tre Micro banana pi STM32
Packing list : 1 PCS 8-button Low/High level Push Buttons module(Please select the version you need)
   
Description:
Can be use for Arduiuo uno mega2560 due,Ideal for linking up to your  Arduiuo UNO Mini Nano Mega2560 Breadboard raspberry pi banana pi LED Indicator light etc,or others MCU PLD CPU ( AVR STM32 ARM PIC C51 NRF24LE1 CC2530 MSP430 STM8 FPGA CPLD etc.)
  
8-button Low/High level Push Buttons module(When pressed output Low/High level).
 
2.54MM pitch
Low level output Module Use these pins : GND L1 L2 L3 L4 L5 L6 L7 L8 VCC
High level output Module Use these pins : GND H1 H2 H3 H4 H5 H6 H7 H8 VCC
 
Working voltage: DC 3-12V(3.3V 5V)
 
Does not include pin size : 40 x 25 x 5.5mm
Weight : 5.0g(with Pin),4.2g(no Pin)
 
High level output Module :The default is low level(0V), trigger button, H1-H8 output high level(3-12V)
  
Low level output Module :The default is high level(3-12V), trigger button, L1-L8 output low level(0V)
 
 
 
 
Circuit schematics : 
 
 
 

Below item is powered by Canton-electronics Ltd .
Module No.:  TB091
 
Qty : 1 pcs 433.92MHz SMA Antenna ; 
 
 
 
 
 
 
 
 
 
 
Feature: 
Frequency 433 MHz;
S.W.R. <= 2.0;
Polarization Linear
Impedance 50 Ohm;
B. Material & Mechanical Characteristics;
Material of Radiator Cu;
Material of Plastic Body: TPE;
Cable Type /;
Connector Type SMA Male;
Connector Pull Test >= 3 Kg;
Connector Torque Test /;
C. Environmental;
Operation Temperature - 40 °C ~ 65 °C;
Storage Temperature - 40 °C ~ 80 °C;
Length: 50MM;
 
 
 
 

Below item is powered by Canton-electronics Ltd .
Module No.:  TB091
 
Qty : 1 pcs 433.92MHz SMA Antenna ; 
 
 
 
 
 
 
 
 
 
 
Feature: 
Frequency 433 MHz;
S.W.R. <= 2.0;
Polarization Linear
Impedance 50 Ohm;
B. Material & Mechanical Characteristics;
Material of Radiator Cu;
Material of Plastic Body: TPE;
Cable Type /;
Connector Type SMA Male;
Connector Pull Test >= 3 Kg;
Connector Torque Test /;
C. Environmental;
Operation Temperature - 40 °C ~ 65 °C;
Storage Temperature - 40 °C ~ 80 °C;
Length: 50MM;
 
 
 
 

 
Product Name:   2pcs 1.5V 2.5V 3V to 3.3V DC DC Step-UP Voltage Regulator Module
 
 
 
Packing list:
 
 
2 pcs 1.5V 2.5V 3V to 3.3V DC DC Step-UP Voltage Regulator Module
 

 
Description: 
Input voltage 0.8 ~ 3.3V,output 3.3V
Maximum output current: 490 MA,
 
Start Voltage 0.8V, Output Current 8MA
  
INPUT 1-1.5V,     OUTPUT 3.3V 50-110MA;
INPUT 1.5-2V,      OUTPUT 3.3V 110-160MA;
INPUT 2-3V,         OUTPUT 3.3V 160-400MA;
INPUT above 3V,  OUTPUT 3.3V 400-490MA;
 
DC-DC Boost module working frequency 150KHZ. efficiency <85% (Recommended high efficiency version).
2.54mm pin pitch.
Excluding Pin Size 11mm x 10.5mm x 7.5mm(Very small).
Weight : about 1g( Very light)  
 
 Applications:
Battery powered equipment
Wirels Module,NRF24L01 CC1101 CC2500 SI4432 SI4463 etc.
3.3V MCU Development Board,FPGA/CPLD  ARM AVR PIC
Camera, Video camera
3.3V Low power motors
PDA
LED Lighting
Wireless communication equipment
MP3/MP4 player
Audio equipment
 
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
 
 
Q & A:
Q : Why output voltage is less than the nominal voltage
A : Input power supply power is too low.Test the input voltage with a multimeter, a t this time of the input voltage is very low

 
Product Name:   2pcs 1.5V 2.5V 3V to 3.3V DC DC Step-UP Voltage Regulator Module
 
 
 
Packing list:
 
 
2 pcs 1.5V 2.5V 3V to 3.3V DC DC Step-UP Voltage Regulator Module
 

 
Description: 
Input voltage 0.8 ~ 3.3V,output 3.3V
Maximum output current: 490 MA,
 
Start Voltage 0.8V, Output Current 8MA
  
INPUT 1-1.5V,     OUTPUT 3.3V 50-110MA;
INPUT 1.5-2V,      OUTPUT 3.3V 110-160MA;
INPUT 2-3V,         OUTPUT 3.3V 160-400MA;
INPUT above 3V,  OUTPUT 3.3V 400-490MA;
 
DC-DC Boost module working frequency 150KHZ. efficiency <85% (Recommended high efficiency version).
2.54mm pin pitch.
Excluding Pin Size 11mm x 10.5mm x 7.5mm(Very small).
Weight : about 1g( Very light)  
 
 Applications:
Battery powered equipment
Wirels Module,NRF24L01 CC1101 CC2500 SI4432 SI4463 etc.
3.3V MCU Development Board,FPGA/CPLD  ARM AVR PIC
Camera, Video camera
3.3V Low power motors
PDA
LED Lighting
Wireless communication equipment
MP3/MP4 player
Audio equipment
 
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
 
 
Q & A:
Q : Why output voltage is less than the nominal voltage
A : Input power supply power is too low.Test the input voltage with a multimeter, a t this time of the input voltage is very low

 
Typical applications:
Arduiuo UNO MEGA2560 Pro mini DUE
ARM MCU FPGA/CPLD Development Board
raspberry pi
5V/12V Relay Module
 
Product Name:DC 5V 12V Touch Module 0-130s Delay Timer Button Board for Arduiuo UNO Relay raspberry pi
Packing list:
 
1 pcs  DC 5V 12V Touch Module 0-130s Delay Timer Button Board
 
  
Description:
 
Click the "touch key" with your finger,Then "OUT pin" output high after the delay 0-130 seconds to restore low
 
Time delay 0-130 seconds adjustable
2.54mm pin
PCB Size : 32MM X 20MM X 13MM
 
 
VCC : 5V-12V Power supply positive
GND : Power supply negative
OUT : Trigger Output(4V-11V,VCC-1V)
   
 
 
 
 
Connected with the 12V relay module:
 
 
  
 
 

 
Typical applications:
Arduiuo UNO MEGA2560 Pro mini DUE
ARM MCU FPGA/CPLD Development Board
raspberry pi
5V/12V Relay Module
 
Product Name:DC 5V 12V Touch Module 0-130s Delay Timer Button Board for Arduiuo UNO Relay raspberry pi
Packing list:
 
1 pcs  DC 5V 12V Touch Module 0-130s Delay Timer Button Board
 
  
Description:
 
Click the "touch key" with your finger,Then "OUT pin" output high after the delay 0-130 seconds to restore low
 
Time delay 0-130 seconds adjustable
2.54mm pin
PCB Size : 32MM X 20MM X 13MM
 
 
VCC : 5V-12V Power supply positive
GND : Power supply negative
OUT : Trigger Output(4V-11V,VCC-1V)
   
 
 
 
 
Connected with the 12V relay module:
 
 
  
 
 

 
Product Name :     1A DC 5V 6V 7V 9V 12V 24V to 3.7V DC DC Converter Step-Down Buck Voltage Regulator Module for 18650 Rechargeable li-ion Batteies   
    
  Packing list:
 
1 PCS DD4012SB_3V7 5V-40V to 3.7V DC DC Step Down Converter Module 
    
  
 
Description: 
   
Input voltage 5~40V,output 3.7V
 
Maximum output current 1A
 
DC-DC Step-Down Converter module working frequency 550KHz. efficiency is 76-90% .
 
Quiescent current: about 1.5MA
 
Overtemperature shutdown, input under-voltage protection, BS-voltage protection, and short circuit protection.
 
2.54mm pin pitch, Arduiuo UNO MEGA2560 Breadboard MCU Development Board friendly
 
 Size 18.3mm x 10.2mm x 6.7mm( small)
  
Weight : about 1.1g(Very light)
 
  
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
 
Applications:
  
12V 5V TO 3.7V lithium battery-powered systems
3.7V Motor ​Toy
WIFI esp8266 HC-12 Bluetooth Module
CCTV camera
Electric toys
Wireless Module:Nrf24l01 CC1101 CC2500 CC2530 Zigbee
Smart home / home automation
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
FM radio
Battery powered equipment
Audio amplifier
18650 Rechargeable li-ion Batteies
 
 
 
 
 

 
Product Name :     1A DC 5V 6V 7V 9V 12V 24V to 3.7V DC DC Converter Step-Down Buck Voltage Regulator Module for 18650 Rechargeable li-ion Batteies   
    
  Packing list:
 
1 PCS DD4012SB_3V7 5V-40V to 3.7V DC DC Step Down Converter Module 
    
  
 
Description: 
   
Input voltage 5~40V,output 3.7V
 
Maximum output current 1A
 
DC-DC Step-Down Converter module working frequency 550KHz. efficiency is 76-90% .
 
Quiescent current: about 1.5MA
 
Overtemperature shutdown, input under-voltage protection, BS-voltage protection, and short circuit protection.
 
2.54mm pin pitch, Arduiuo UNO MEGA2560 Breadboard MCU Development Board friendly
 
 Size 18.3mm x 10.2mm x 6.7mm( small)
  
Weight : about 1.1g(Very light)
 
  
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
 
Applications:
  
12V 5V TO 3.7V lithium battery-powered systems
3.7V Motor ​Toy
WIFI esp8266 HC-12 Bluetooth Module
CCTV camera
Electric toys
Wireless Module:Nrf24l01 CC1101 CC2500 CC2530 Zigbee
Smart home / home automation
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
FM radio
Battery powered equipment
Audio amplifier
18650 Rechargeable li-ion Batteies
 
 
 
 
 

Product Name : 5pcs 3.7-5V 3528 White LED & 1pcs Touch LED Driver Controller DC-DC Constant Current Converter for li-on USB Solar battery
 
Product List: 5pcs 3.7-5V 3528 White LED  or 1pcs Touch LED Driver Controller
 
An LED touch controller can control 1-5 LED light bars
 
  
 
Description: 
  
3.5-5V White LED light bar:
 
Color : White
Working Voltage: DC 3.5-5V
Working Current: <225mA(220Ma at 5V;100mA at 3.7V)
Wavelength(nm): 6500
Brightness (mcd): 1500
Angle: 120
 
Size : 36x8.7x1.7mm
Weight : 0.7g
  
  
 
LED touch controller : 
 
     
Working voltage : DC 3.5-13V(Perfect for 3.7V 5V 6V 9V 12V LED Driver)
   
Output Current: 30-2000MA
   
Maximum output power: 26W
   
Continuously adjustable brightness  
   
Turn off consumption is only 10uA
   
Size 31mm x 15mm x 3mm
 
Weight : about 1.3g
   
 
Easy to use : 
  
Touch the ''touch area'', touch once  ''Turn on'',Touch again  ''Turn off''
 
When ''Turn on'', Continuous touch reduce the brightness,Once again Continuous touch Increased brightness,And so on  
 
 
 
 
 
 
 
 
 
 

Product Name: 4bit UART TTL Serial Port Digital Tube Display Module replace TM1650 MAX7219 TM1637 74HC595 for Arduiuo NODEMCU Pi
 
Packing list:
1 pcs 4 bit RXD TTL232 Digital Tube LED Display Module;
(Please choose with Pin or no Pin)
Description:
 
Working voltage: DC 5V
4-bit 0.36-inch red digital tube
Driver chip: the company's custom chip
Driver interface: TTL232 (RXD Pin), driven by USB to TTL or MUC UART TXD interface
Can display characters: AbcdEFGHIJKLMnopqrStUvWXYZ1234567890
Size: 33mm*15mm*11mm
Weight: 5 grams
Pin description:
VCC: positive power supply 5V
GND: negative power supply
RXD: serial port receiving line (connected with the TXD of the single-chip USB to TTL)
Applications:
for Arduiuo UNO MEGA2560 LEONARDO MICRO NANO ADAPTER Pro Mini ZERO DUE
for raspberry pi 3 B 4
for MCU AVR PIC ARM STM32
for FPGA/CPLD
for Toy car
for instrument meter
for Electronic hobby DIY
for Ascii code Text Display Board
 
 
Connect with UNO( Does not include UNO)
 
Connect with MCU/FPGA or USB to TTL232 Board
 
 
Theoretically, these Ascii characters ''AbcdEFGHIJKLMnopqrStUvWXYZ1234567890'' can be displayed, but some characters need to be identified according to the following table:
3 Special Function Characters:
#:Reset(And Clear Screen)
*:Insert Decimal Point
% :Bit Clear
How to use:
Connect the DC 5V power supply to the VCC GND port, and connect the RXD port to the TXD port of the MCU or USB to TTL Board
UART communication parameters: Baud rate 9600, 8, 1, N
Add the # reset command in front of the character, you can enter 1-5 characters (1-4 characters and 1 decimal point) at a time, more than 5 characters will cover the previous characters, except for #*% and the characters to be displayed, There must be no other characters (space/enter), otherwise an exception will be displayed.
 
Example:
Display 1234 Input: #1234
Display 123.4 Input: #123*4
Display 88.88 Input: #88*88
Display 123 Input : #123% Do not display the lowest digit
Display 234 Input : #% 234 does not display the highest bit
Notice:
If it shows abnormality, please check if the string has ''space/enter'' or other special characters at the beginning or end of the string

Product Name: 4bit UART TTL Serial Port Digital Tube Display Module replace TM1650 MAX7219 TM1637 74HC595 for Arduiuo NODEMCU Pi
 
Packing list:
1 pcs 4 bit RXD TTL232 Digital Tube LED Display Module;
(Please choose with Pin or no Pin)
Description:
 
Working voltage: DC 5V
4-bit 0.36-inch red digital tube
Driver chip: the company's custom chip
Driver interface: TTL232 (RXD Pin), driven by USB to TTL or MUC UART TXD interface
Can display characters: AbcdEFGHIJKLMnopqrStUvWXYZ1234567890
Size: 33mm*15mm*11mm
Weight: 5 grams
Pin description:
VCC: positive power supply 5V
GND: negative power supply
RXD: serial port receiving line (connected with the TXD of the single-chip USB to TTL)
Applications:
for Arduiuo UNO MEGA2560 LEONARDO MICRO NANO ADAPTER Pro Mini ZERO DUE
for raspberry pi 3 B 4
for MCU AVR PIC ARM STM32
for FPGA/CPLD
for Toy car
for instrument meter
for Electronic hobby DIY
for Ascii code Text Display Board
 
 
Connect with UNO( Does not include UNO)
 
Connect with MCU/FPGA or USB to TTL232 Board
 
 
Theoretically, these Ascii characters ''AbcdEFGHIJKLMnopqrStUvWXYZ1234567890'' can be displayed, but some characters need to be identified according to the following table:
3 Special Function Characters:
#:Reset(And Clear Screen)
*:Insert Decimal Point
% :Bit Clear
How to use:
Connect the DC 5V power supply to the VCC GND port, and connect the RXD port to the TXD port of the MCU or USB to TTL Board
UART communication parameters: Baud rate 9600, 8, 1, N
Add the # reset command in front of the character, you can enter 1-5 characters (1-4 characters and 1 decimal point) at a time, more than 5 characters will cover the previous characters, except for #*% and the characters to be displayed, There must be no other characters (space/enter), otherwise an exception will be displayed.
 
Example:
Display 1234 Input: #1234
Display 123.4 Input: #123*4
Display 88.88 Input: #88*88
Display 123 Input : #123% Do not display the lowest digit
Display 234 Input : #% 234 does not display the highest bit
Notice:
If it shows abnormality, please check if the string has ''space/enter'' or other special characters at the beginning or end of the string

Product Name: 4bit UART TTL Serial Port Digital Tube Display Module replace TM1650 MAX7219 TM1637 74HC595 for Arduiuo NODEMCU Pi
 
Packing list:
1 pcs 4 bit RXD TTL232 Digital Tube LED Display Module;
(Please choose with Pin or no Pin)
Description:
 
Working voltage: DC 5V
4-bit 0.36-inch red digital tube
Driver chip: the company's custom chip
Driver interface: TTL232 (RXD Pin), driven by USB to TTL or MUC UART TXD interface
Can display characters: AbcdEFGHIJKLMnopqrStUvWXYZ1234567890
Size: 33mm*15mm*11mm
Weight: 5 grams
Pin description:
VCC: positive power supply 5V
GND: negative power supply
RXD: serial port receiving line (connected with the TXD of the single-chip USB to TTL)
Applications:
for Arduiuo UNO MEGA2560 LEONARDO MICRO NANO ADAPTER Pro Mini ZERO DUE
for raspberry pi 3 B 4
for MCU AVR PIC ARM STM32
for FPGA/CPLD
for Toy car
for instrument meter
for Electronic hobby DIY
for Ascii code Text Display Board
 
 
Connect with UNO( Does not include UNO)
 
Connect with MCU/FPGA or USB to TTL232 Board
 
 
Theoretically, these Ascii characters ''AbcdEFGHIJKLMnopqrStUvWXYZ1234567890'' can be displayed, but some characters need to be identified according to the following table:
3 Special Function Characters:
#:Reset(And Clear Screen)
*:Insert Decimal Point
% :Bit Clear
How to use:
Connect the DC 5V power supply to the VCC GND port, and connect the RXD port to the TXD port of the MCU or USB to TTL Board
UART communication parameters: Baud rate 9600, 8, 1, N
Add the # reset command in front of the character, you can enter 1-5 characters (1-4 characters and 1 decimal point) at a time, more than 5 characters will cover the previous characters, except for #*% and the characters to be displayed, There must be no other characters (space/enter), otherwise an exception will be displayed.
 
Example:
Display 1234 Input: #1234
Display 123.4 Input: #123*4
Display 88.88 Input: #88*88
Display 123 Input : #123% Do not display the lowest digit
Display 234 Input : #% 234 does not display the highest bit
Notice:
If it shows abnormality, please check if the string has ''space/enter'' or other special characters at the beginning or end of the string

 
Product Name :     1A DC 7.5-40V 12V to 6V Regulator DC-DC Step-Down Buck Converter Module Board replace LM7806 L7806 TO-220 IC
    
 Packing list(Does not include L7806):
 
1 PCS DD4012SA_6V 7.5V-40V to 6V DC DC Buck Converter Module 
    
 
Description: 
 
Input voltage 7.5~40V,output 6V
 
Maximum output current 1A
 
DC-DC Step-Down Converter module working frequency 550KHz. efficiency is 75-90% .
 
Quiescent current: about 1.5MA
 
Overtemperature shutdown, input under-voltage protection, BS-voltage protection, and short circuit protection.
 
2.54mm pin pitch, Arduiuo UNO MEGA2560 Breadboard MCU Development Board friendly
 
Excluding Pin Size 18.3mm x 10.2mm x 6.7mm( small)
 
Weight : about 1.3g(Very light)
 
  
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
 
Applications:
 
 
12V 9V TO 6V lithium battery-powered systems
6V Motor
WIFI esp8266 Module
CCTV camera
Toy car
Smart home / home automation
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
​replace LM7805 L7806 
 
 
 

 
Product Name :     1A DC 7.5-40V 12V to 6V Regulator DC-DC Step-Down Buck Converter Module Board replace LM7806 L7806 TO-220 IC
    
 Packing list(Does not include L7806):
 
1 PCS DD4012SA_6V 7.5V-40V to 6V DC DC Buck Converter Module 
    
 
Description: 
 
Input voltage 7.5~40V,output 6V
 
Maximum output current 1A
 
DC-DC Step-Down Converter module working frequency 550KHz. efficiency is 75-90% .
 
Quiescent current: about 1.5MA
 
Overtemperature shutdown, input under-voltage protection, BS-voltage protection, and short circuit protection.
 
2.54mm pin pitch, Arduiuo UNO MEGA2560 Breadboard MCU Development Board friendly
 
Excluding Pin Size 18.3mm x 10.2mm x 6.7mm( small)
 
Weight : about 1.3g(Very light)
 
  
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
 
Applications:
 
 
12V 9V TO 6V lithium battery-powered systems
6V Motor
WIFI esp8266 Module
CCTV camera
Toy car
Smart home / home automation
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
​replace LM7805 L7806 
 
 
 

Product Name:DC 12V Car ACC Trigger Delay Power-off Switch Relay Module for Car Door Sensor Driving recorder Stereo Ambient Light Delay off
 
 
Product Included:
1pcs Car Delay Power-off Switch Relay Board
Parameters:
SKU: IO32G01;
Working voltage: DC 12V (Range DC 10-15V)
Working current: Quiescent current 4MA, relay pull-in current 36MA
Trigger control port: ACC port, high level trigger (DC 5-24V).
Working temperature: -40℃ to 80℃;
Dimensions: 45x29x15mm (board only), 45x29x15mm (with case)
Weight: 16g (board only), 26g (with case)
Relay maximum load: 20A/14VDC; 20A/125VAC
Applicable objects: driving recorders, navigation display screens, car audio, car headlights, ambient lights, interior decorative lights, etc.
Working Principle:
This switch is a power-off delay shutdown function. The power supply of the 12V power supply port is a standing power supply, which can generally be connected to a battery or other adapter power supply. The trigger port is used to connect the detected signal to realize related actions.
First, we connect to the standing power supply 12V, and then if the trigger port (ACC) has power supply, the switch will be turned on. When the power supply of the trigger port is disconnected, the module will automatically turn off the relay after a delay for a period of time; If there is voltage, the relay will open and this cycle can be done.
 
Note: The ground wire of the trigger signal of the trigger port should be connected with the negative pole of the power supply port (common ground). If the signal and power supply port are the same device or share the same power supply, they are already connected by default, and there is no need to find the signal ground wire and connect it to the negative pole of the power supply port.​
Delay time selection:
The delay time is determined by the position of the red four digit dial switch. There will be different delay parameters corresponding to different positions, as shown in the table below
Pin description:
VCC : Working power supply
GND : Working power supply -
ACC : Input trigger port, effective level DC 5-24V
COM : relay output common terminal
NO : Relay output normally open
Application:
1. Household switch control--exhaust fans, cooling equipment and other household products;
2. Automotive electronic control--navigation, media sound effects, door and window delay lift and other automotive circuit power-off delay control;
3. Industrial equipment control - access control equipment control - warehouse, aisle lighting;
4. Car lights, headlights delay off, etc.
 

Below item is powered by Canton-Power Ltd . 
 
Product Name:   DD0606SA_4V5 1-4.5V to 4.5V DC DC Step up Boost Converter Module Power Supply Board for aaa duracell DC Motor car toy
  
Packing list:
 
1 PCS 1V-4.5V TO 4.5V Step-up Boost Module
 
  
Description:
Input voltage DC 1 ~ 4.5V, output DC 4.5V( -5% )
 
DC DC Boost Converter Module working frequency 1MHZ.efficiency 66% -88% .
 
Operating temperature range : -25~ 85 Degrees Celsius
 
Storage temperature range : -45~ 125 Degrees Celsius
 
2.54mm pin pitch,MCU Development Board Breadboard friendly.
 
Excluding Pin Size : 21.3mm x 12.5mm x 5.7mm(Very small)
 
Weight : 1.85g(Very light) 
 
 
   
Applications
Battery powered equipment
Breadboard Power Supply
ARM STM32 FPGA CPLD Board
Wireless Module,  esp8266 nrf24l01 rtl8710 GSM etc
3.3V Small power motors
Camera, Video camera
3.3V Toy car
PDA
LED Lighting
Wireless communication equipment
Audio equipment 
 
 
Attention :
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
Q & A:
     
Q : Why output voltage is less than the nominal voltage
A : Input power supply power is too low.Test the input voltage with a multimeter,a t this time of the input voltage is very low
 
 
 
 
   
 
 
 

Below item is powered by Canton-Power Ltd . 
 
Product Name:   DD0606SA_4V5 1-4.5V to 4.5V DC DC Step up Boost Converter Module Power Supply Board for aaa duracell DC Motor car toy
  
Packing list:
 
1 PCS 1V-4.5V TO 4.5V Step-up Boost Module
 
  
Description:
Input voltage DC 1 ~ 4.5V, output DC 4.5V( -5% )
 
DC DC Boost Converter Module working frequency 1MHZ.efficiency 66% -88% .
 
Operating temperature range : -25~ 85 Degrees Celsius
 
Storage temperature range : -45~ 125 Degrees Celsius
 
2.54mm pin pitch,MCU Development Board Breadboard friendly.
 
Excluding Pin Size : 21.3mm x 12.5mm x 5.7mm(Very small)
 
Weight : 1.85g(Very light) 
 
 
   
Applications
Battery powered equipment
Breadboard Power Supply
ARM STM32 FPGA CPLD Board
Wireless Module,  esp8266 nrf24l01 rtl8710 GSM etc
3.3V Small power motors
Camera, Video camera
3.3V Toy car
PDA
LED Lighting
Wireless communication equipment
Audio equipment 
 
 
Attention :
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
Q & A:
     
Q : Why output voltage is less than the nominal voltage
A : Input power supply power is too low.Test the input voltage with a multimeter,a t this time of the input voltage is very low
 
 
 
 
   
 
 
 

Product Name:  3.3V 5V  KC11B04 4 key Analog Buttons AD Keypad Board ADC port keyboard for Arduiuo UNO MEGA2560 DUE ARM AVR PIC
Packing list:
 
1 pcs 4 key Analog Buttons(With Pin Header )
 
  Description:
1 Power Supply Voltage : 3-12V
2 4 Buttons 1 Analog Output(AD Pin)
3 PCB Size : 30x12mm
4 Weight : 1.8g
  
Ideal for linking up to your Ardiuno UNO Mini Nano Mega2560 etc,or others MCU ( AVR STM32 ARM7 ARM9 ARM10 PIC AT89C51 STC MSP430 FPGA CPLD etc.) 
 
 
 
   
 
 
Circuit schematics : 
 
Connection with Arduiuo UNO :
 
Arduiuo uno/mega2560 Code  
//******************************************************//
 
/*
  Arduiuo_4 key analog Buttons
 
  This example code is in the public domain.
 */
 
#define key1ValueMin     96
#define key1ValueMax     106
#define key2ValueMin     144
#define key2ValueMax     159
#define key3ValueMin     193
#define key3ValueMax     213
#define key4ValueMin     242
#define key4ValueMax     255
 
 
int adPin = A0;    // select the input pin for the potentiometer
int keyValue;
int keyValue_r;
int keyValue_rr;
 
 
//key scan
int key_scan(void)
{
   int adValue;
   int key;
   
   adValue = analogRead(adPin);//read ad Value
  
  adValue = adValue / 4;
  
  if(adValue >= key1ValueMin && adValue <= key1ValueMax)// k1
  {
    key = 1;
  }
  else if(adValue >= key2ValueMin && adValue <= key2ValueMax)// k2
  {
    key = 2;
  }
  else if(adValue >= key3ValueMin && adValue <= key3ValueMax)// k3
  {
    key = 3;
  }
  else if(adValue >= key4ValueMin)// k4
  {
    key = 4;
  }
  else //Invalid value
  {
    key = 0; 
  }
  
  return key;
  
}
void setup() {
  
   Serial.begin(9600);
}
 
void loop() {
 
  //Save three key scan value
  keyValue_rr = keyValue_r;
  keyValue_r = keyValue;
  keyValue = key_scan();
  
  //Three scanned values are the same, indicating that key is valid
  if(keyValue > 0 && keyValue==keyValue_r && keyValue_r==keyValue_rr)
  {
   Serial.print("keyValue = ");
    Serial.println(keyValue);
  }
  
  delay(100); //Each scan interval 100-200MS       
 
}
 
//******************************************************// 

Product Name:  3.3V 5V  KC11B04 4 key Analog Buttons AD Keypad Board ADC port keyboard for Arduiuo UNO MEGA2560 DUE ARM AVR PIC
Packing list:
 
1 pcs 4 key Analog Buttons(With Pin Header )
 
  Description:
1 Power Supply Voltage : 3-12V
2 4 Buttons 1 Analog Output(AD Pin)
3 PCB Size : 30x12mm
4 Weight : 1.8g
  
Ideal for linking up to your Ardiuno UNO Mini Nano Mega2560 etc,or others MCU ( AVR STM32 ARM7 ARM9 ARM10 PIC AT89C51 STC MSP430 FPGA CPLD etc.) 
 
 
 
   
 
 
Circuit schematics : 
 
Connection with Arduiuo UNO :
 
Arduiuo uno/mega2560 Code  
//******************************************************//
 
/*
  Arduiuo_4 key analog Buttons
 
  This example code is in the public domain.
 */
 
#define key1ValueMin     96
#define key1ValueMax     106
#define key2ValueMin     144
#define key2ValueMax     159
#define key3ValueMin     193
#define key3ValueMax     213
#define key4ValueMin     242
#define key4ValueMax     255
 
 
int adPin = A0;    // select the input pin for the potentiometer
int keyValue;
int keyValue_r;
int keyValue_rr;
 
 
//key scan
int key_scan(void)
{
   int adValue;
   int key;
   
   adValue = analogRead(adPin);//read ad Value
  
  adValue = adValue / 4;
  
  if(adValue >= key1ValueMin && adValue <= key1ValueMax)// k1
  {
    key = 1;
  }
  else if(adValue >= key2ValueMin && adValue <= key2ValueMax)// k2
  {
    key = 2;
  }
  else if(adValue >= key3ValueMin && adValue <= key3ValueMax)// k3
  {
    key = 3;
  }
  else if(adValue >= key4ValueMin)// k4
  {
    key = 4;
  }
  else //Invalid value
  {
    key = 0; 
  }
  
  return key;
  
}
void setup() {
  
   Serial.begin(9600);
}
 
void loop() {
 
  //Save three key scan value
  keyValue_rr = keyValue_r;
  keyValue_r = keyValue;
  keyValue = key_scan();
  
  //Three scanned values are the same, indicating that key is valid
  if(keyValue > 0 && keyValue==keyValue_r && keyValue_r==keyValue_rr)
  {
   Serial.print("keyValue = ");
    Serial.println(keyValue);
  }
  
  delay(100); //Each scan interval 100-200MS       
 
}
 
//******************************************************// 

Product Name: JTAG IDC ISP Wire 2*5 to 10*1 Pin Cable FC-10P 2.54mm for Saleae Logic Analyzer Xilinx Altera Lattice FPGA CPLD USB Programmer
 
 
Packing list:
 
1 pcs IDC 10pins ISP/JTAG Female to IDC 10pins dupont wire (2.54mm pitch ) ;
 
Description:
 
Length :  About 30 cm ;
 
Typical Application :
 
for ALTERA USB Blaster
for Saleae Logic Analyzer
for Xilinx Platform Cable USB
for Lattice USB Download Cable
 
10pin JTAG IDC Female terminal :
 

Product Name: JTAG IDC ISP Wire 2*5 to 10*1 Pin Cable FC-10P 2.54mm for Saleae Logic Analyzer Xilinx Altera Lattice FPGA CPLD USB Programmer
 
 
Packing list:
 
1 pcs IDC 10pins ISP/JTAG Female to IDC 10pins dupont wire (2.54mm pitch ) ;
 
Description:
 
Length :  About 30 cm ;
 
Typical Application :
 
for ALTERA USB Blaster
for Saleae Logic Analyzer
for Xilinx Platform Cable USB
for Lattice USB Download Cable
 
10pin JTAG IDC Female terminal :
 

Product Name:2Pcs 0-8Ghz SMA  RP-SMA Antenna Connector Adapter for 315M 433M 868M 915M 2.4G 5.8G Radio UHF RF Wireless Module CC1101 CC2500
Packing list:
2 pcs 0-8GHz SMA Antenna Connector
  
SMA connector series product is a widely used small coaxial connectors with threaded connections. The SMA series inch threaded connections, high strength, good shock resistance. The outer conductor ends in direct contact, so that the insertion loss to a minimum.
 
Impedance:50 Ohm
 
 
Applications:
 
Antennas
Broadcast
radios
Electronic test equipment
Serial digital and Analog interface
Non-professional radio antenna connections
IEEE 802.11 b/g/n WLAN System
Wireless Communication System
Wi-Fi / WiMAX / MIMO System
Internet of Things
Smart Home
Wifi
Bluetooth
Zigbee
Zwave
0-8Ghz Wireless Systems

Product Name:2Pcs 0-8Ghz SMA  RP-SMA Antenna Connector Adapter for 315M 433M 868M 915M 2.4G 5.8G Radio UHF RF Wireless Module CC1101 CC2500
Packing list:
2 pcs 0-8GHz SMA Antenna Connector
  
SMA connector series product is a widely used small coaxial connectors with threaded connections. The SMA series inch threaded connections, high strength, good shock resistance. The outer conductor ends in direct contact, so that the insertion loss to a minimum.
 
Impedance:50 Ohm
 
 
Applications:
 
Antennas
Broadcast
radios
Electronic test equipment
Serial digital and Analog interface
Non-professional radio antenna connections
IEEE 802.11 b/g/n WLAN System
Wireless Communication System
Wi-Fi / WiMAX / MIMO System
Internet of Things
Smart Home
Wifi
Bluetooth
Zigbee
Zwave
0-8Ghz Wireless Systems

 
Product Name :         8W DC 12-40V to 9V Voltage Regulator DC-DC Converter Step-Down Buck Module replace LM7809 L7809 TO-220 IC   
    
 Packing list(Does not include L7809):
 
1 PCS DD4012SA_9V 11V-40V to 9V 900MA DC DC Buck Converter Module 
    
 
Description: 
 
Input voltage 11~40V,output 9V
 
Maximum output current 900MA
 
DC-DC Step-Down Converter module working frequency 550KHz. efficiency is 75-90% .
 
Quiescent current: about 1.5MA
 
Overtemperature shutdown, input under-voltage protection, BS-voltage protection, and short circuit protection.
 
2.54mm pin pitch,Can directly replace the L78XX LM78XX TO-220 IC
 
This is a DC-DC voltage converter module,Must be noted when using: 
 
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
Applications:
   
 
9V Motor
WIFI router
CCTV camera
Toy car
Smart home / home automation
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
​replace LM7809 L7809 
​  
 
 

 
Product Name :         8W DC 12-40V to 9V Voltage Regulator DC-DC Converter Step-Down Buck Module replace LM7809 L7809 TO-220 IC   
    
 Packing list(Does not include L7809):
 
1 PCS DD4012SA_9V 11V-40V to 9V 900MA DC DC Buck Converter Module 
    
 
Description: 
 
Input voltage 11~40V,output 9V
 
Maximum output current 900MA
 
DC-DC Step-Down Converter module working frequency 550KHz. efficiency is 75-90% .
 
Quiescent current: about 1.5MA
 
Overtemperature shutdown, input under-voltage protection, BS-voltage protection, and short circuit protection.
 
2.54mm pin pitch,Can directly replace the L78XX LM78XX TO-220 IC
 
This is a DC-DC voltage converter module,Must be noted when using: 
 
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
Applications:
   
 
9V Motor
WIFI router
CCTV camera
Toy car
Smart home / home automation
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
​replace LM7809 L7809 
​  
 
 

 
Product Name :      5V-40V to 3.7V 1A DC DC Step-Down Buck Converter Module replace 18650 18500 Rechargeable li-ion Batteies Power supply   
    
 Packing list:
 
1 PCS DD4012SA_3V7 5V-40V to 3.7V 1A DC DC Buck Converter Module 
    
 
Description: 
 
Input voltage 5~40V,output 3.7V
 
Maximum output current 1A
 
DC-DC Step-Down Converter module working frequency 550KHz. efficiency is 76-90% .
 
Quiescent current: about 1.5MA
 
Overtemperature shutdown, input under-voltage protection, BS-voltage protection, and short circuit protection.
 
2.54mm pin pitch, Arduiuo UNO MEGA2560 Breadboard MCU Development Board friendly
 
Excluding Pin Size 18.3mm x 10.2mm x 6.7mm( small)
 
Weight : about 1.3g(Very light)
 
  
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
 
Applications:
 
 
12V 5V TO 3.7V lithium battery-powered systems
WIFI esp8266 Module
CCTV camera
Smart home / home automation
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
replace 18650 18500 Rechargeable li-ion Batteies Power supply
 
 
 

 
Product Name :      5V-40V to 3.7V 1A DC DC Step-Down Buck Converter Module replace 18650 18500 Rechargeable li-ion Batteies Power supply   
    
 Packing list:
 
1 PCS DD4012SA_3V7 5V-40V to 3.7V 1A DC DC Buck Converter Module 
    
 
Description: 
 
Input voltage 5~40V,output 3.7V
 
Maximum output current 1A
 
DC-DC Step-Down Converter module working frequency 550KHz. efficiency is 76-90% .
 
Quiescent current: about 1.5MA
 
Overtemperature shutdown, input under-voltage protection, BS-voltage protection, and short circuit protection.
 
2.54mm pin pitch, Arduiuo UNO MEGA2560 Breadboard MCU Development Board friendly
 
Excluding Pin Size 18.3mm x 10.2mm x 6.7mm( small)
 
Weight : about 1.3g(Very light)
 
  
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
 
Applications:
 
 
12V 5V TO 3.7V lithium battery-powered systems
WIFI esp8266 Module
CCTV camera
Smart home / home automation
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
replace 18650 18500 Rechargeable li-ion Batteies Power supply
 
 
 

 
Product Name :     1A DC 9V 12V 15V 24V to 6V dc dc power supply converter module Step-Down Buck Voltage Regulator Module  
    
  Packing list:
 
1 PCS DD4012SB_6V 7.5V-40V to 6V DC DC Buck Converter Module 
    
  
 
Description: 
   
Input voltage 7.5~40V,output 6V
 
Maximum output current 1A
 
DC-DC Step-Down Converter module working frequency 550KHz. efficiency is 75-90% .
 
Quiescent current: about 1.5MA
 
Overtemperature shutdown, input under-voltage protection, BS-voltage protection, and short circuit protection.
 
2.54mm pin pitch, Arduiuo UNO MEGA2560 Breadboard MCU Development Board friendly
 
 Size 18.3mm x 10.2mm x 6.7mm( small)
  
Weight : about 1.1g(Very light)
 
  
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
 
Applications:
  
12V 9V TO 6V lithium battery-powered systems
6V Motor ​Toy
WIFI esp8266 HC-12 Bluetooth Module
CCTV camera
Electric toys
Wireless Module:Nrf24l01 CC1101 CC2500 CC2530 Zigbee
Smart home / home automation
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
FM radio
Battery powered equipment
Audio amplifier
 
  
 

 
Product Name :     1A DC 9V 12V 15V 24V to 6V dc dc power supply converter module Step-Down Buck Voltage Regulator Module  
    
  Packing list:
 
1 PCS DD4012SB_6V 7.5V-40V to 6V DC DC Buck Converter Module 
    
  
 
Description: 
   
Input voltage 7.5~40V,output 6V
 
Maximum output current 1A
 
DC-DC Step-Down Converter module working frequency 550KHz. efficiency is 75-90% .
 
Quiescent current: about 1.5MA
 
Overtemperature shutdown, input under-voltage protection, BS-voltage protection, and short circuit protection.
 
2.54mm pin pitch, Arduiuo UNO MEGA2560 Breadboard MCU Development Board friendly
 
 Size 18.3mm x 10.2mm x 6.7mm( small)
  
Weight : about 1.1g(Very light)
 
  
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
 
Applications:
  
12V 9V TO 6V lithium battery-powered systems
6V Motor ​Toy
WIFI esp8266 HC-12 Bluetooth Module
CCTV camera
Electric toys
Wireless Module:Nrf24l01 CC1101 CC2500 CC2530 Zigbee
Smart home / home automation
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
FM radio
Battery powered equipment
Audio amplifier
 
  
 

Product Name: Ultra-small DC-DC 0.8-3.3V to DC 3.3V Step UP Boost PFM Voltage Converter Power Supply Module DC/DC 1.5V 2V 2.5V 3V for DUE FPGA
 
 
 
Packing list:
 
1 PCS 0.9V-3.3V TO 3.3V Step-UP  PFM Voltage Converter Module  
 
 
 
Description: 
Input voltage 0.8 ~ 3.3V,output 3.3V
Maximum output current: 500 MA,
 
Start Voltage 0.8V, Output Current 10MA
  
INPUT 1-1.5V,     OUTPUT 3.3V 50-110MA;
INPUT 1.5-2V,      OUTPUT 3.3V 110-160MA;
INPUT 2-3V,         OUTPUT 3.3V 160-400MA;
INPUT above 3V,  OUTPUT 3.3V 400-500MA;
 
DC-DC Boost module working frequency 150KHZ. efficiency <85% (Recommended high efficiency version)
Excluding Pin Size 11mm x 10.5mm x 7.5mm(Very small),2.54mm pin pitch
 
 
 Applications:
Battery powered equipment
Wirels Module,NRF24L01 CC1101 CC2500 etc.
Development Board,FPGA/CPLD  STM32 
Camera, Video camera
VCR
PDA
LED Lighting
Wireless communication equipment
MP3/MP4 player
Audio equipment
 
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself

Product Name: Ultra-small DC-DC 0.8-3.3V to DC 3.3V Step UP Boost PFM Voltage Converter Power Supply Module DC/DC 1.5V 2V 2.5V 3V for DUE FPGA
 
 
 
Packing list:
 
1 PCS 0.9V-3.3V TO 3.3V Step-UP  PFM Voltage Converter Module  
 
 
 
Description: 
Input voltage 0.8 ~ 3.3V,output 3.3V
Maximum output current: 500 MA,
 
Start Voltage 0.8V, Output Current 10MA
  
INPUT 1-1.5V,     OUTPUT 3.3V 50-110MA;
INPUT 1.5-2V,      OUTPUT 3.3V 110-160MA;
INPUT 2-3V,         OUTPUT 3.3V 160-400MA;
INPUT above 3V,  OUTPUT 3.3V 400-500MA;
 
DC-DC Boost module working frequency 150KHZ. efficiency <85% (Recommended high efficiency version)
Excluding Pin Size 11mm x 10.5mm x 7.5mm(Very small),2.54mm pin pitch
 
 
 Applications:
Battery powered equipment
Wirels Module,NRF24L01 CC1101 CC2500 etc.
Development Board,FPGA/CPLD  STM32 
Camera, Video camera
VCR
PDA
LED Lighting
Wireless communication equipment
MP3/MP4 player
Audio equipment
 
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself

 
Product Name:   DC DC Boost Step UP Converter 0.8-3.3V to 3.3V Voltage Regulator Power supply Module
 
 
 
Packing list:
 
1 PCS 0.8V-3.3V TO 3.3V  Boost  Power supply Module
 

 
Description: 
Input voltage 0.8 ~ 3.3V,output 3.3V
Maximum output current: 490 MA,
 
Start Voltage 0.8V, Output Current 8MA
  
INPUT 1-1.5V,     OUTPUT 3.3V 50-110MA;
INPUT 1.5-2V,      OUTPUT 3.3V 110-160MA;
INPUT 2-3V,         OUTPUT 3.3V 160-400MA;
INPUT above 3V,  OUTPUT 3.3V 400-490MA;
 
DC-DC Boost module working frequency 150KHZ. efficiency <85% (Recommended high efficiency version).
2.54mm pin pitch.
Excluding Pin Size 11mm x 10.5mm x 7.5mm(Very small).
Weight : about 1g( Very light)  
 
 Applications:
Battery powered equipment
Wirels Module,NRF24L01 CC1101 CC2500 SI4432 etc.
3.3V MCU Development Board,FPGA/CPLD  ARM AVR
Camera, Video camera
3.3V Low power motors
PDA
LED Lighting
Wireless communication equipment
MP3/MP4 player
Audio equipment
 
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
 
 
Q & A:
Q : Why output voltage is less than the nominal voltage
A : Input power supply power is too low.Test the input voltage with a multimeter, a t this time of the input voltage is very low

 
Product Name:   DC DC Boost Step UP Converter 0.8-3.3V to 3.3V Voltage Regulator Power supply Module
 
 
 
Packing list:
 
1 PCS 0.8V-3.3V TO 3.3V  Boost  Power supply Module
 

 
Description: 
Input voltage 0.8 ~ 3.3V,output 3.3V
Maximum output current: 490 MA,
 
Start Voltage 0.8V, Output Current 8MA
  
INPUT 1-1.5V,     OUTPUT 3.3V 50-110MA;
INPUT 1.5-2V,      OUTPUT 3.3V 110-160MA;
INPUT 2-3V,         OUTPUT 3.3V 160-400MA;
INPUT above 3V,  OUTPUT 3.3V 400-490MA;
 
DC-DC Boost module working frequency 150KHZ. efficiency <85% (Recommended high efficiency version).
2.54mm pin pitch.
Excluding Pin Size 11mm x 10.5mm x 7.5mm(Very small).
Weight : about 1g( Very light)  
 
 Applications:
Battery powered equipment
Wirels Module,NRF24L01 CC1101 CC2500 SI4432 etc.
3.3V MCU Development Board,FPGA/CPLD  ARM AVR
Camera, Video camera
3.3V Low power motors
PDA
LED Lighting
Wireless communication equipment
MP3/MP4 player
Audio equipment
 
Attention :
 
This is a DC-DC voltage converter module,Must be noted when using:
1 Input voltage can not be greater than the maximum input range
2 Output power can not be greater than the maximum load for a long time
3 Input power must be greater than the output power, because the power consumption of the module itself
 
 
 
Q & A:
Q : Why output voltage is less than the nominal voltage
A : Input power supply power is too low.Test the input voltage with a multimeter, a t this time of the input voltage is very low

 

 

UAF42 High Pass Low Pass Band Pass Filter Active Filter Module Low Pass Filter Adjustable Filter

Features:                                                                         .
Full-speed USB device interface, compatible with USB V2.0, Standard USB-A male design;
Direct power supply from USB connectin to PC.Analogue standard serial port, for upgrading original serial peripherals, or increased additional serial port via USB;
Support 3.3V and 5V TTL target system, the serial application is fully compatible with the computer under the Windows operating system, without need for modification;
Support 5, 6, 7 or 8 data bits, to support odd parity, even parity, blank signs and no parity;
Support the serial port to send control signal and MODEM liaison signal of transmission rate and serial receiver ready signal ;
Plus level conversion module, support RS232, RS485 and other interfaces; (supporting modules are sold separately)
Two parallel port interface way: EPP mode and MEM way; USB to parallel port can be used for simple digital I / O control;
Support a variety of serial communication mode, UART, I2C, SPI, etc.;
Support 2-wire and 4-wire synchronous serial interface, I2C support 4 kinds of transmission speed;
Perfectly support STC MCU program download and debug, STC official recommended program;
Support the outwards output voltage, optional 3.3V/ 5V or no output;
Support working status indication;
Dual interface output;
Hardware full-duplex serial port, built-in transceiver buffer area, support the communication baud rate 50bps ~ 2Mbps.
Support WINDOWS 98/ME/2000/XP/server 2003/VISTA/server 2008/WIN 7/64/32-bit.
Application:
Simulation standard serial ports, for upgrading original serial peripherals, or increased via USB.
Need I2C, SPI, UART, TTL serial port and other occasions;
Electronic engineers debugging Downloads;
Debugging of a variety of hardware systems, software systems, ;
Serial ports flash