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 50V Monolithic Ceramic Capacitor 10PF ~ 100nF 10pF 20pF 30pF 47pF 56pF 68pF 100pF 1nF 10nF 100nF
Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:1000PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

 50V Monolithic Ceramic Capacitor 10PF ~ 100nF 10pF 20pF 30pF 47pF 56pF 68pF 100pF 1nF 10nF 100nF
Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:1000PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

 50V Monolithic Ceramic Capacitor 10PF ~ 100nF 10pF 20pF 30pF 47pF 56pF 68pF 100pF 1nF 10nF 100nF
Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:1000PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

 50V Monolithic Ceramic Capacitor 10PF ~ 100nF 10pF 20pF 30pF 47pF 56pF 68pF 100pF 1nF 10nF 100nF
Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:1000PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

 50V Monolithic Ceramic Capacitor 10PF ~ 100nF 10pF 20pF 30pF 47pF 56pF 68pF 100pF 1nF 10nF 100nF
Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:1000PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

 50V Monolithic Ceramic Capacitor 10PF ~ 100nF 10pF 20pF 30pF 47pF 56pF 68pF 100pF 1nF 10nF 100nF
Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:1000PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

 50V Monolithic Ceramic Capacitor 10PF ~ 100nF 10pF 20pF 30pF 47pF 56pF 68pF 100pF 1nF 10nF 100nF
Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:1000PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

Description
Photo interrupter module and a digital interface, built-in 13 LED build a simple circuit to produce.photo-interrupter warning lamp
It comes with digital interfaces of the LED, the light blocking access number 3 sensor interfaces,sensing when the light interrupter
Device senses a key signal, LED lights, otherwise off.
Routines source code:
int Led = 13 ;// define LED Interface
int buttonpin = 3; // define the photo interrupter sensor interface
int val ;// define numeric variables val
void setup()
pinMode (Led, OUTPUT) ;// define LED as output interface
pinMode (buttonpin, INPUT) ;// define the photo interrupter sensor output interface
void loop ()
val = digitalRead (buttonpin) ;// digital interface will be assigned a value of 3 to read val
if (val == HIGH) // When the light sensor detects a signal is interrupted, LED flashes
digitalWrite (Led, HIGH);
else
digitalWrite (Led, LOW)

Features:
Support sampling frequency (kHz):8 / 11.025 / 12 / 16 / 22.05 / 24 / 32 / 44.1 / 48
Support file format:MP3/WAV
Support Micro SD card, Micro SDHC Card
30 class adjustable volume
UART TTL serial control playback mode, baud rate is 9600bps
Power supply can be 3.2 ~ 5.2VDC
Size:43mm x 25mm

Product Description
Category: Sensors, Transducers
Family: Position Sensors - Angle, Linear Position Measuring
Series: SV01
For Measuring: Rotary Position
Technology: Resistive
Rotation Angle - Electrical, Mechanical: 0° ~ 333.3°, Continuous
Output: Analog Voltage Output
Actuator Type: Hole for Shaft
Linearity: ±2%
Resistance (Ohms): 10k
Resistance Tolerance: ±30%
Mounting Type: Surface Mount
Termination Style: SMD (SMT) Tab
Operating Temperature: -40°C ~ 85°C

0.1 second (small) ~ 999 minutes (large) continuously adjustable

This product is easy to use and powerful, but buyers please read the operating instructions of this product in detail. It is a very practical product.



Module highlights:

1. Wide voltage power supply (6~30V) supports micro USB 5.0V power supply, which is very convenient to use;

2. The interface is clear and simple, powerful, easy to understand, and almost meets all your needs;

3. There is a key emergency stop function (STOP key), with reverse connection protection, reverse connection does not burn;


4. Different OP, CL, LOP parameters can be set, these parameters are independent of each other and saved separately;

5. All set parameters are automatically saved after power-off.



Operating mode:

P1: After the signal is triggered, the relay is turned on for OP time, and then turned off; during OP time, the following operations

P1.1: The signal is invalid when triggered again

P1.2: The signal is triggered again to re-timing

P1.3: The signal triggers the reset again, the relay is disconnected, and the timing stops;

P-2: Give the trigger signal, after the relay is turned off for CL time, the relay is turned on for OP time, after the timing is completed, the relay is turned off;

P3.1: Give the trigger signal, after the relay is turned on for the OP time, the relay will disconnect for the CL time, and then cycle the above actions, give the signal again in the cycle, the relay will disconnect, and stop timing; the number of cycles (LOP) can be set;

P3.2: There is no need to trigger signal after power-on, the OP time of relay is on, the CL time of relay is off, the above actions are cycled; the number of cycles (LOP) can be set;

P-4: Signal holding function. If there is a trigger signal, the timer is cleared and the relay remains on; when the signal disappears, the relay is disconnected after timing the OP; during the timing, there is another signal, and the timer is cleared;

Product parameters:

1: Working voltage: 6-30V support micro USB 5.0V power supply

2: Trigger signal source: high-level trigger (3.0V-24V) The signal ground and the system ground are not in the same ground to improve the anti-interference ability of the system (also can be short-circuited to the common ground)

3: Output capacity: can control equipment within DC 30v 5A or AC 220v5A

4: Quiescent current: 20mA working current: 50mA

5: Service life: more than 100,000 times; working temperature: -40—85°C; size: 6.2*3.8*1.7cm

6: With optocoupler isolation, enhanced anti-interference ability, industrial grade circuit board, set parameters forever after power failure

memory.

Special attention: The relay output is a passive contact, uncharged output, and controls the on-off function of a line.

Description:
100% brand new and high quality L3G4200D 3-Axes Gyroscope Angular Rate Sensor Module This is a breakout board for the L3G4200D low-power three-axes angular rate sensor. The L3G4200D has a full scale of ±250/±500/±2000 dps and is capable of measuring rates with a user-selectable bandwidth. These work great in gaming and Useful virtual reality input devices, GPS navigation systems and robotics. Specifications: Chip: L3G4200D Power Supply: 3-5V Communication Mode: IIC / SPI communications protocol Measuring Range: 250/500/2000 dps Communication Interface: I2C (up to 400 kHz) or SPI (10 MHz; 4 & 3 wire) Operating temperature: -40 to 185 °F (-40 to 85 °C) Size: 23mm x 23mm Color: Blue

Description
GPS modules NEO-6M, 3V-5V power supply Universal

Model: GY-GPS6MV2

Destined module with ceramic antenna, signal super

Save the configuration parameter data EEPROM Down

With data backup battery

There are LED signal indicator

Antenna size 25 * 25mm

Module size 25mm * 35mm

Installation aperture 3mm

Default Baud Rate: 9600

Compatible with various flight control modules that provide GPS computer test software

Product description
dimming principle is to use the principle of two modules brightness changes for pwm.
Mercury switches provide a digital signal that triggers the PWM , through the program design,
We can see the light like two cups filled with the effect of shuffling back and forth.
test code:
int LedPinA = 5;
int LedPinB = 6;
int ButtonPinA = 7;
int ButtonPinB = 4;
int buttonStateA = 0;
int buttonStateB = 0;
int brightness = 0;
void setup()
pinMode(LedPinA, OUTPUT);
pinMode(LedPinB, OUTPUT);
pinMode(ButtonPinA, INPUT);
pinMode(ButtonPinB, INPUT);
void loop()
buttonStateA = digitalRead(ButtonPinA);
if (buttonStateA == HIGH && brightness != 255)
brightness ;
buttonStateB = digitalRead(ButtonPinB);
if (buttonStateB == HIGH && brightness != 0)
brighness --;
analogWrite(LedPinA, brightness); //
analogWrite(LedPinB, 255 - brightness); //
delay(25);

Product Description
Electronic Compass Compass Module QMC5883 Triple
Axis Compass Three-axis Magnetic Field Sensor
Description:
*High quality immersion gold pcb machine welding processes, quality assurance
*Name: QMC5883 module (three-axis magnetic field module)
*Model: GY-271
*Chip: QMC5883
*Power supply :3.3-5v
*Means of communication: IIC communication protocol
*Measuring range: ± 1.3-8 Gauss
*chematics, manuals and reference documentation of relevant data
51, the AVR microcontroller test code

Description
1,Integrates common B-type (print line), Mini, Micro triple interface, no longer have to worry about the wire;
2,You can easily select 5V / 3V level interface via the toggle switch panel;
3,All pins are drawn FT232, FT232 easy to do a program evaluation;
4,Perfectly support XP, WIN7, WIN8,32-bit / 64-bit operating systems.

Product Description
For the convenience of customers!The input voltage of this module is 3.3V / 5V , which is more convenient for development and use!
VL6180X proximity, gesture and ambient light sensing (ALS) module.
Slider switch controlling 2 functions:
Ranging measurement, beyond 400mm.
Ambient light sensing, up to 100 kLux1.
4-digit display, displaying either the distance of a target from the proximity sensor, or the lux value from the ambient light sensing (ALS).
Excellent ranging accuracy, independent of the reflectance of the target.
Basic gesture recognition application can be developed with one or multiple VL6180X modules.
Compatible with STM32 Nucleo board family.
Equipped with ArduinoTMUNO R3 connector.
RoHS compliant.
Wiring description:
1. The digital output of GPIO0 is 10 pins;
2.SDA pin of SDA connector development board;
3.SCL pin of SCL joint development board;
4. Power supply can be connected to 3.3V or 5V.
Instructions for module use:
1. Download the provided routine code to the WAVGAT development board;
2. Connect the VL6180 module with the development board according to the wiring instructions;
3. Open the serial port monitoring window of Arduino IDE;
4. When the sensor is not covered in front, the serial port monitoring window displays 255;
5. When there is occlusion, the distance is shown as measured distance and the unit is mm.

Description
1.Industry-leading noise performance through proprietary amplifier and filter design techniques
2.Integrated shield greatly reduces capacitive coupling from current conductor to die due to high dV/dt signals,and prevents offset drift in high-side,high voltage applications
3.Total output error improvement through gain and offset trim over temperature
4.Small package size, with easy mounting capability
5.Monolithic Hall IC for high reliability
6.Ultra-low power loss: 100 internal conductor resistance
7.Galvanic isolation allows use in economical, high-side current sensing in high voltage systems
8.3.0 to 5.5 V, single supply operation
9.120 KHz typical bandwidth
10.3 us output rise time in response to step input current
11.Output voltage proportional to AC or DC currents
12.Factory-trimmed for accuracy
13.Extremely stable output offset voltage
14.Nearly zero magnetic hysteresis
15.Board Size:38.22*18.03mm
16.Typical application:
Application 1. The ACS758 outputs an analog signal,VOUT,that varies linearly with the uni- or bi-directional AC or DC primary sampled current, IP, within the range specified. CF is for optimal noise management, with values that depend on the application.

Description
1.Industry-leading noise performance through proprietary amplifier and filter design techniques
2.Integrated shield greatly reduces capacitive coupling from current conductor to die due to high dV/dt signals,and prevents offset drift in high-side,high voltage applications
3.Total output error improvement through gain and offset trim over temperature
4.Small package size, with easy mounting capability
5.Monolithic Hall IC for high reliability
6.Ultra-low power loss: 100 internal conductor resistance
7.Galvanic isolation allows use in economical, high-side current sensing in high voltage systems
8.3.0 to 5.5 V, single supply operation
9.120 KHz typical bandwidth
10.3 us output rise time in response to step input current
11.Output voltage proportional to AC or DC currents
12.Factory-trimmed for accuracy
13.Extremely stable output offset voltage
14.Nearly zero magnetic hysteresis
15.Board Size:38.22*18.03mm
16.Typical application:
Application 1. The ACS758 outputs an analog signal,VOUT,that varies linearly with the uni- or bi-directional AC or DC primary sampled current, IP, within the range specified. CF is for optimal noise management, with values that depend on the application.

Product Description
Input: 6.5V-60V
Output: 1.25-30V adjustable
Efficiency: 97% (MAX)
Module size: L75mm * W21mm * H16mm
Operating temperature: -40 ° - 85 °
Maximum 7A, within 5A for long-distance running, strengthen heat dissipation above 5A
Output power: max 100W
Wiring: Terminals are free of soldering, IN is input, OUT is output

Package included:
1x 60/48/36/24V to 19/12/9/5/3V Car Charger Regulator Power Supply Adjustable Module

Description
The module adopts HID technology, foreign trade quality, no driver is needed, and the download file has its own application program, which is plug and play. Support WIN7, XP 32-bit, 64-bit system, easy to use. We provide application programs and C secondary development library code. There is no VB code, but they are all dll files. Therefore, if you can operate on VB, you need to try it by friends who are familiar with VB. As the engineer goes abroad for further studies, he can’t provide you with technical support.
Module application:
Home smart switch control, hotel smart switch, hotel smart electrical control, smart greenhouse, shopping mall smart switch, company plant smart switch, Internet cafe timing management, karaoke timing control, Internet of Things, industrial control equipment, test equipment power control, street light management , Intelligent management, centralized power management, etc.
Module description:
1. Onboard square USB interface, stable connection
2. Use imported high-performance USB control chip
3. Use the special relay drive chip ULN2803, the relay work is more stable
4. Use genuine Songle relay
5. Military-grade PCB board production
6. Board power sockets and terminals, two power access methods are convenient and flexible. After the power is connected, even if the computer is turned off or the USB is unplugged from the computer, the relay can still maintain the setting state.
Product parameters:
Input voltage: DC 12 V
Input current: more than 300mA
Connection method: NC/COM/NO
Relay parameters:
It can control up to AC 250V, 10A AC load and up to DC30V 10A DC load
Wiring diagram:

Chinese and English software interface:
1. Green means the relay is closed, red means open
2. After turning on the device, the software automatically obtains the current working status of the relay

Description
Socket Adapter plate Board for 8Pin NRF24L01 Wireless Transceive module 51

Wireless module operating voltage is generally 3.3v, while the ordinary 51 microcontroller 5v, this module is easy toshop wireless module with 51 single system board used in conjunction.
This module can be any one of 51 shop is directly connected to the system board, easy to use.
It's for 8 Pin NRF24L01 Module
This is a simple socket board which is for NRF24L01 Wireless module
on-board AMS1117-3.3 chip
It could be used with NRF24L01 Wireless module at our store.


Package included:
100% Brand New
1PCS x Socket Adapter Module

1. In : Input positive
2. Out : Output positive
3. GND: IN-/OUT-
4. Dimensions:45*31*16mm(length*width*height)
5. Input voltage: 9-35V(Maximum limit voltage is 35 v, please leave some leeway to use ,otherwise be damaged)
6. Output voltage: 5V
7. Output current: 5A
8. Output power: 25w

Description
100% brand new and high quality
Material: Electrical components
Color: See pictures
Chip models: CM108 external crystal
Output Input: 3.5mm green headphone jack, 3.5mm microphone jack
USB interface, plug and play, instead of traditional sound card (computer sound card is broken, can be a direct replacement)
Analog audio signals can be output to directly drive headphones or powered speakers
No drivers in WIN2000, WINXP, WIN3003 system
Package includes:
1Pc x CM108 USB Drive Free USB Sound Card Laptop Computer External Sound Card Module

Working parameters:
Pyroelectric human body infrared sensor module, model: SR-602
Sensing distance: up to 5 meters; recommended 0-3.5M.
Output: high level, H=3.3V, L=0V
Power supply DC: 3.3V-15V
Quiescent current: 20uA
Features and uses:
This module has high sensitivity, fast response, small static power consumption, small size, easy to install, and is installed.
The lens, the pin header has been soldered, and the power supply is provided without debugging. Can be used for body sensor lights, alarms, security,
Access control on-demand imaging, automatic equipment for agriculture, forestry and mining.
Key points:
1. The high level time of the output of this product is adjustable, 2.5 seconds to 1 hour, the output time set at the factory.
It is 2.5 seconds, and you can change one chip resistor if you need to change it. Please read the resistance value corresponding to the typical delay time.
Refer to the relevant form below.
2. Blocking time, 2 seconds, not adjustable.
3. The factory is defined as repeatable trigger and cannot be changed.
4. The supply voltage of this module is 3.3V to 15V, and the limit voltage is 2.8V to 18V.
5. Module output timing is: output high level for 2 seconds after power-on, then go low, enter standby
status. If the delay time is changed, the time when the module outputs a high level after power-on will increase accordingly, which can be understood as
The startup time after entering the normal working state after the electric power will increase.
6. After installing the photosensitive element, it does not work during the day, work at night, does not contain photosensitive components, and works all day (There are no photodiodes on the module,please purchase separately if needed. Recommended: ordinary F3 photodiode)
It is considered that there is no photosensitive element installed.
7. This module is very sensitive, pay attention to the installation position, try to avoid the heat source radiation source (air outlet / direct sunlight)
8. The sensitivity of this module is adjustable, and you need to change a chip resistor. Please read the relevant table below for details.
grid.
9. When soldering with 220V ordinary soldering iron, it is necessary to unplug the power supply before welding. It is recommended to use
24V low voltage soldering iron, such as domestic white light 936.
10. If you follow the MCU and connect the lamp, please read the reference circuit diagram below.

Description:
The probe can be inserted directly into the soil. It is a digital display of soil moisture. When the humidity is below the set value starting pump starts watering, when humidity reaches the set value to stop watering. The operation is very simple. It is intelligent humanization.
Parameters:
Product name: Soil Moisture Controller Module
Model: XH - M214
Power supply voltage: DC 12 V
Output way: Output switch
Humidity range: 20-99% RH
Control precision: 1% RH
Control current: 10 A
Size: 52 * 43 * 16 mm
Using attention:
Please follow the wiring diagram of the description. You can choose the appropriate wiring mode according to the load voltage you use
1>. F0 setting start humidity(the humidity of the solenoid valve or the pump start working)Press the “SET” button to display “F0” and press the “SET” button to display the start humidity, and press / button to “SET” the humidity value
2>. F1 setting stop humidity (the humidity of the solenoid valve or the pump stops working)Press /- button to switch to “F1”, press the “SET” button to display the stop humidity value, and press / button to SET the humidity value
3>. F2 humidity correction
Normal use without correction error.The correction of values in the use of multiple modules at the same time is conducive to a unified management operation.

Product Description
1: Field effect tube module, input and output are completely isolated.
2: Signal trigger terminal: digital high and low level. It can be connected to MCU IO port, PLC interface, DC power supply, etc.,
3: Input signal voltage: 3V~24V; current: about 5ma.
4: The output terminal can control high-power equipment, motors, bulbs, LED strips, DC motors, micro water pumps, solenoid valves, etc.
5: Output controlled voltage: 5V~36V. Current: less than 5A, more than 5A need to add a heat sink, the maximum can not exceed 20A.
6: The original F5305S power field effect tube is used, which can input PWM to control the motor speed and the brightness of the lamp.

Product Test Video Demonstration Address: (The 5A motor used in the test basically does not generate heat)

8 Bit WS2812 5050 RGB LED Lights Built-In Full Color-Driven Development board 8 Bits

8 Bit WS2812 5050 RGB LED Lights Built-In Full Color-Driven Development board 8 Bits

Description
Product name: DC-DC USB step-down module

Input: 4.5V-28V

Output: 5V/3A (Max)

Conversion efficiency: 92% (Max)

Switching frequency: 1.4MHZ (Max) Typical 1MHZ

Working temperature: -40℃- 85℃

Product size: L42mm*W16mm*H5mm

Load capacity: maximum output 3A, 2A long-distance running

Scope of application: USB5V powered devices such as mobile power supplies, mobile phones, tablets, etc.

Product Description
With excellent performance ASIC chip function generator ICL8038, add a small amount of resistive and capacitive components, can produce sine, triangle and square wave, and the frequency of the signal, duty cycle, adjustable distortion sine wave.
Model: ICL8038
Input 12V DC
Frequency range 50-5KHz,
Size:6cm*4.5cm*0.2cm
Weight:26g

Notice:
Requires a certain DIY ability, you need to weld the kit yourself

Description:
ICL8038 pin functions:
1 foot, 12 foot: sine waveform adjusting terminal;
2 foot: sine wave output;
3 foot: triangle wave output;
4 foot, 5 foot: the frequency and duty cycle (or waveform asymmetry) adjustment;
6 foot: V , the positive power supply;
7 foot: offset; 8 foot: frequency adjustment input terminal;
9 foot: square wave output.
This is an open collector output terminal, work should take a load resistor to the corresponding positive power supply terminal from the pin, to get a TTL-compatible square-wave output, the load resistance must be connected to 5V power supply;
10 foot: timing capacitor terminal;
11 foot: V-, negative power supply terminal or the ground. Use positive and negative power supply, 11 feet to the negative supply, the output waveform are symmetrical with respect to 0V; use a single positive power supply, 11 feet grounded, the output waveform is unipolar, uniform voltage is VCC / 2;
13 feet, 14 Feet: Empty foot.
The kits are designed for a frequency range is 50-5KHz, two bands with a switch S to switch, RP1 is the frequency adjustment, RP2 is the duty cycle adjustment, RP3 is a sine wave distortion adjustment. Circuit uses 12V single power supply, input from the X1; X2, X3 is a waveform output side, you can use oscilloscope to observe three output waveforms.


Package Included:
1 set function signal generator module electronic kit

Description
This module is an adjustable step-down module, and the output voltage can be changed by adjusting the blue adjustable resistor on the module. The input and output voltage difference is 1V, which can be small

The IN- (input negative), IN (input positive), OUT- (output negative), and OUT (output positive) marked on the module must be connected correctly, otherwise the module may be damaged.
Battery charging method of use:
1. Determine the float voltage and charging current of the rechargeable battery you need, and the input voltage of the module;
2. Adjust the constant voltage potentiometer to adjust the output voltage to about 5V.
3. Measure the output short-circuit current with the 10A current block of a multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined charging current value;
4. The default shipping current of the charging lamp is 0.1 times the charging current (constant current value).
5. Adjust the constant voltage potentiometer to make the output voltage reach the float voltage;
6. Connect the battery and try charging.
(Steps 1, 2, 3, 4, and 5 are for the module input to connect to the power supply, and the output does not connect to the battery without load.)

LED constant current drive How to use:
1. Determine the working current and working voltage you need to drive the LED;
2. Adjust the constant voltage potentiometer to adjust the output voltage to about 5V.
3. Measure the output short-circuit current with the 10A current block of a multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined LED working current;
4. Adjust the constant voltage potentiometer to make the output voltage reach the LED working voltage;
5. Connect the LED and test the machine.
(Steps 1, 2, 3, and 4 are for the module input to be connected to the power supply, and the output is no-load without LED lights.)

Communication protocol description:
1. This module has the function of communicating with the computer. It is convenient for the computer to read the current and voltage data of the module,
2. Since the output of this module is TTL level, to achieve communication with the computer, the level must be converted back to the RS232 level that the computer can recognize. This cp2102 usb to TTL module is needed to achieve the conversion.
3. The communication protocol is as follows:
Baud rate: 9600 Bps
BB CC ADDR 00 XX XX CRC (current return command)

BB CC ADDR 01 XX XX CRC (voltage return command)
among them
BB CC is the frame header (2 bytes)
ADDR is the module address (1 byte)
00 is read current command (1 byte)

01 is read voltage command (1 byte)
XX XX arbitrary value (2 bytes)
CRC CRC check (1 byte)

Description
1. Working voltage: 5V 2. Suitable for 3.3V xbee, Bluetooh Bee, WPM wireless download module 3. With high baud rate transmission, stable and reliable performance Usage introduction Purpose 1: The PC is directly connected to the XBee adapter through the USB cable Use 2: Bluetooth Bee for configuration or as a data transmission Use 3: ARDUINO PRO MINI downloader

Description
[Product name]: 150mm I type 9v battery buckle line
[Wire Specifications]:
1. Wire specification: 1007 # 26 tinned iron wire, composed of 7 0.12mm iron wires
2. Color: red and black
3. Length: 150mm (can be customized any length)
[Product Usage]: Suitable for cars, gifts, crafts, electronic communications, electrical appliances, hardware, lamps, batteries, toys, etc.

Product Description
1. We guarantee that all chips are brand new imported industrial-grade chips with ultra-long-distance transmission up to thousands of meters.
2. ESD protection with plus or minus 15KV
3. The chip has a limited slew rate driver, which minimizes EMI and reduces signal reflection caused by improper terminal matching cables, so that the error-free signal transmission rate is as high as 500Kbps.
4. Receiver input impedance with 1/4 unit load, supports multi-machine communication, and allows connection to the bus with more than 128 devices.
5. The operating temperature of industrial-grade chips can reach -40°C to 85°C.
6. This module can be hot-swapped, and there will be no signal plugging caused by hot-swapping of other 485 chips.
7. The power supply uses SMD tantalum electrolytic capacitors, and uses double capacitors for high and low frequency power supply filtering
8. Using dual transient suppression diodes, the overvoltage protection performance is better
9. Use 10Ω current protection resistor, patch design to improve 485 signal integrity
10. With terminals and welding lead holes, it is convenient to debug and finalize the wiring, and the welding leads can improve the signal reliability
11. RS485 and TTL signals are all routed on one side to ensure signal quality and improve signal integrity
12. Spread copper on a large area to prevent signal interference
13. With 2.54 pitch hole plate welding holes, it is convenient for your secondary development
14. With M3 screw holes that are quite commonly used at present, it is convenient and reliable to install
15. With 120Ω termination resistance, short-circuit R16 to enable termination resistance
16. With power and RXD, TXD signal indicator lights, you can have a panoramic view of the transceiver status
17. Angled pin leads to facilitate testing
18. Support 3.3V and 5V signal control, stronger compatibility

Description:
Enviroment temperature:-25 to 85 degree
Relative humidity: 40 to 80 degree
Rating:DC12V, 50MA
Contact Resistance: less than 100ohms
Insulation resistance: more than 100ohms, DC250V/1MIN
Dielectric strength: AC250V 50HZ for 1 MIN
Electrically life:100,000 cycles
Mechanical life:100,000 cycles
Travel:0.25 or-0.1mm
Operating force:160 or-50GF
Dimensions: 12 x 12mm(L x W)
Color: Red, Green, Blue, White, Yellow
Mainly used in digital camera, industrial equipment, home appliances, etc.
Stable performance, safety and reliability

Description:
Enviroment temperature:-25 to 85 degree
Relative humidity: 40 to 80 degree
Rating:DC12V, 50MA
Contact Resistance: less than 100ohms
Insulation resistance: more than 100ohms, DC250V/1MIN
Dielectric strength: AC250V 50HZ for 1 MIN
Electrically life:100,000 cycles
Mechanical life:100,000 cycles
Travel:0.25 or-0.1mm
Operating force:160 or-50GF
Dimensions: 12 x 12mm(L x W)
Color: Red, Green, Blue, White, Yellow
Mainly used in digital camera, industrial equipment, home appliances, etc.
Stable performance, safety and reliability

Description:
Enviroment temperature:-25 to 85 degree
Relative humidity: 40 to 80 degree
Rating:DC12V, 50MA
Contact Resistance: less than 100ohms
Insulation resistance: more than 100ohms, DC250V/1MIN
Dielectric strength: AC250V 50HZ for 1 MIN
Electrically life:100,000 cycles
Mechanical life:100,000 cycles
Travel:0.25 or-0.1mm
Operating force:160 or-50GF
Dimensions: 12 x 12mm(L x W)
Color: Red, Green, Blue, White, Yellow
Mainly used in digital camera, industrial equipment, home appliances, etc.
Stable performance, safety and reliability

Description:
Enviroment temperature:-25 to 85 degree
Relative humidity: 40 to 80 degree
Rating:DC12V, 50MA
Contact Resistance: less than 100ohms
Insulation resistance: more than 100ohms, DC250V/1MIN
Dielectric strength: AC250V 50HZ for 1 MIN
Electrically life:100,000 cycles
Mechanical life:100,000 cycles
Travel:0.25 or-0.1mm
Operating force:160 or-50GF
Dimensions: 12 x 12mm(L x W)
Color: Red, Green, Blue, White, Yellow
Mainly used in digital camera, industrial equipment, home appliances, etc.
Stable performance, safety and reliability

Description:
Enviroment temperature:-25 to 85 degree
Relative humidity: 40 to 80 degree
Rating:DC12V, 50MA
Contact Resistance: less than 100ohms
Insulation resistance: more than 100ohms, DC250V/1MIN
Dielectric strength: AC250V 50HZ for 1 MIN
Electrically life:100,000 cycles
Mechanical life:100,000 cycles
Travel:0.25 or-0.1mm
Operating force:160 or-50GF
Dimensions: 12 x 12mm(L x W)
Color: Red, Green, Blue, White, Yellow
Mainly used in digital camera, industrial equipment, home appliances, etc.
Stable performance, safety and reliability

Description:
Enviroment temperature:-25 to 85 degree
Relative humidity: 40 to 80 degree
Rating:DC12V, 50MA
Contact Resistance: less than 100ohms
Insulation resistance: more than 100ohms, DC250V/1MIN
Dielectric strength: AC250V 50HZ for 1 MIN
Electrically life:100,000 cycles
Mechanical life:100,000 cycles
Travel:0.25 or-0.1mm
Operating force:160 or-50GF
Dimensions: 12 x 12mm(L x W)
Color: Red, Green, Blue, White, Yellow
Mainly used in digital camera, industrial equipment, home appliances, etc.
Stable performance, safety and reliability

Specification:
Model: V-156-1C25
Material: plastic & metal
Color: black, red
Size: as is shown in the picture
Contact configuration: SPDT
Micro switch spdt hinge roller lever 15A V-156-1C25
Rating: 15A, 1/2HP, 125/250VAC 0.6A, 125VDC; 0.3A, 250VDC
Feature:
3 terminals, applicable to AC DC control circuits.
High precision mechanism design offering acute operation.
Durable in use.
Designed to control the movement of a mechanical part.
Used in industrial control applications to automatically monitor and indicate whether the travel limits of a particular device have been exceeded.
Package included:
10pcs x Micro Switch Module
Note:
Please allow 1-3mm errors due to manual measurement.
Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.

Product Description
H-bridge motor driver
Drive a DC motor, a winding of a stepper motor or other loads
Wide 6.5-V to 45-V working voltage
565-mΩ typical RDS (open) (HS LS)
3.6-A peak current drive
Pulse width modulation control interface
Current regulation without sense resistor

Product Description:
This product is equipped with DS1307Z real-time clock chip and 32.768KHz crystal oscillator, and provides CR1220 button battery socket.
Parameter:
Power supply voltage: 5V power supply
Power supply current: 500mA
Backup power supply: CR1220 3V button battery (the default battery is not equipped)
Features
DS1307Z is a low power consumption, full BCD code clock calendar real-time clock chip with 56 bytes of non-volatile RAM, with IIC communication interface, the chip can provide information such as seconds, minutes, hours, and the number of days per month can be automatically adjusted , And can automatically detect power failure and switch the circuit.
At the same time, the DS1307Z module has a 32.768KHz crystal oscillator and a button battery holder, which is easy to use.
Package Included:
1 X RTC DS1307 Real Time Clock Module

Description
Car 12v, 24V~38v turn 5v3A, power supply for mobile phones, navigation, etc. Car 4 usb charging
Size: width 37*length 47*height 18
The input voltage range reaches 7~40v, within this range, the output voltage is stable. Since the voltage of some components is 40v, it can only be marked 9~35v, leaving room for it.
The four USBs of the previous version are all connected in parallel and share five amps. This time each dual-layer USB shares a 5v3a chip, dual insurance scheme, two dual-layer USBs are independently powered, each is 3a, and the total current is 6a. Professionals can also modify it to be dual adjustable, that is, two double-layer USBs can be of different voltages. For example, the voltage on the left side is supplied to the tablet, and the voltage can be adjusted to 5.3v, but the right side needs to be supplied to the electronic dog, and the voltage is only 5.08v. Just happy for everyone.
The output voltage is between 5.08~5.18v, which is similar to the power supply on the market and can compensate for the loss of the data line. It can be said that there is no need to go to the adjustable version, the voltage is very good. The voltage range of USB is 4.75v~5.25v, please do not exceed it to avoid damage, the tablet will adjust the voltage according to your requirements, this is more difficult to say, generally the tablet is 5.2~5.3v.
This time it is brand new components, none of the disassembled parts, brand new components, dual-core drive. The performance is further improved and more secure.

Using synchronous rectification technology ●3A output current ●Integrated power MOSFET switch ●Efficiency up to 95% ●Programmable soft start ●Stable low ESR output ●Cycle-by-cycle overcurrent protection ●Fixed frequency 340KH ●Input undervoltage lockout Limits, ●Over-voltage protection and thermal shutdown

Although you can't see a large radiator, the double-layer USB and PCB are all copper, which is a good radiator. Since each IC is only responsible for 3a, it has very low power consumption and the heat generation is within the normal range.
A diode is added to the input terminal, it will not burn if it is connected reversely. If it is found that it is not energized, it will be turned on when it is turned on. But do not connect to the output terminal.

Wiring method: connect the positive voltage of 7 to 38v to the input positive, and the negative voltage to the negative of the icon below, and the four USBs will have a stable 5v voltage. Just plug your mobile phone data cable into the USB. used. The output is convenient for those devices without a USB cable. It is only for professionals. If you don’t understand it, just ignore this interface.
Built-in Apple identification resistor, Apple charging current is about 2.4a; Android phone is about 1a. Please use a high-quality data cable.
Near the terminal, there is a diode SS54, which is an anti-reverse diode. Professionals can short-circuit it, or change it to a fuse, and toss it by themselves.
With apple identification resistor, 47k 56k, 2.7v. Samsung’s S5 mobile phone is currently incompatible. If you have this phone, please contact the owner. Or remove the four resistors, R1, R2, R3, R4, and crush them with pliers. Then the circuit board becomes four and can be plugged into an Android phone.
Q: My phone only has 1A current. Will your 3A converter burn out my phone?

Answer: No; 3A means that the maximum current that the converter can withstand is 3A. As long as your device is below 3A, it can be used. The voltage is the same. The current is self-adaptive and built into the phone. Controlled by the chip, this power supply only provides standard 5v. How to charge it and stop automatically when it is full is a matter of the mobile phone. As long as the working voltage is 5v equipment, it can be used. To use an analogy, there was a box of ten tons of cargo, and a 50-horsepower car could not pull it. He had to request support from his superiors. As a result, a 100-horsepower car was sent and pulled away. If you send a 200-horsepower car, it will be even easier. For the same reason, if a 5v1A working device is used to pull it with a 5v1a power supply, it will be very laborious, and the power supply may even burn out with the device! If you use a 5v3a power supply to pull, it will be easier.

It can also become an adjustable version.

Product Description
First, the main chip:ISD1820
Second, the size:38 mm * 42.5 mm
Third, the working voltage: DC3-5V
Fourth, the main features:
1, Easy to use10Second voice recording
2, High-quality, natural voice reduction
3, Can be used as a loudspeaker module
4, With loop, jog play, single-pass playback
5, Available single-chip control
6, This module can be directly driven8Europe0.5WSmall speakers
Power supply:3-5V, Can be accessed by pin power;
Recording and playback control:Key control or single-chip, control linesIOHas been elicited;
Press to control the recording and playback operation method:
RECkey:Recording button, press and hold can be recorded, release the button to stop recording;
RLAYEkey:Trigger mode playback, click to play the current entire paragraph of the voice;
PLAYLkey:Jog mode playback, press and hold before playback, release to stop playback;
RPLJumper:Loop mode control, can be looped;
FTJumper:Through control, can make the microphone head voice to the speaker playback;
Note: The module output power is small, so the sound is also small, it is recommended to meet our miniature digital audio amplifier board and use3WSpeakers, can be used to achieve greater sound effects.

Product Description
First, the main chip:ISD1820
Second, the size:38 mm * 42.5 mm
Third, the working voltage: DC3-5V
Fourth, the main features:
1, Easy to use10Second voice recording
2, High-quality, natural voice reduction
3, Can be used as a loudspeaker module
4, With loop, jog play, single-pass playback
5, Available single-chip control
6, This module can be directly driven8Europe0.5WSmall speakers
Power supply:3-5V, Can be accessed by pin power;
Recording and playback control:Key control or single-chip, control linesIOHas been elicited;
Press to control the recording and playback operation method:
RECkey:Recording button, press and hold can be recorded, release the button to stop recording;
RLAYEkey:Trigger mode playback, click to play the current entire paragraph of the voice;
PLAYLkey:Jog mode playback, press and hold before playback, release to stop playback;
RPLJumper:Loop mode control, can be looped;
FTJumper:Through control, can make the microphone head voice to the speaker playback;
Note: The module output power is small, so the sound is also small, it is recommended to meet our miniature digital audio amplifier board and use3WSpeakers, can be used to achieve greater sound effects.

Product Description
1.Rating: 50mA 12VDC.
2. Contact Resistance : 50mΩ max. (initial)
3. Insulation Resistance: 100MΩ.(minDC 250V)
4. Dielectric Strength : AC250V.(50/60Hz for 1minute)
5. Electrically Life: 100,000cycles.
6. Environment Temperature: -25°～ 105°.
7. Operating Force: 180/230.(±20gf)
8. Seal Temperature: 250°-280°.
Key switch module and a digital interface, built-in 13 LED build a simple circuit to produce key warning lamp.13 comes with digital interfaces of the LED,
theaccess number 3 button switch sensor interfaces, when the key switch sensor senses a key signal , LED lights , otherwise off.
Routines Source Code:
int Led=13;// Definition LED Interface
int buttonpin=3 // Define the key switch sensor interface
int val;// Defines a numeric variable val
void setup()
{
pinMode(Led,OUTPUT);// Definition LED as output interface
pinMode(buttonpin,INPUT);// Defined the button switch sensor as the output interface
}
void loop()
{
val=digitalRead(buttonpin);// The digital interface is assigned a value of 3 to read val
if(val==HIGH)// When the key switch test the sensor detects a signal , LED flashes
{
digitalWrite(Led,HIGH)
}
else
{
digitalWrite(Led,LOW)
}
}

Description
Input Voltage:DC 6-60V
Display Accuracy:0.1V
Control Accuracy:0.1V
Output Type:direct output
Voltage Tolerance:±0.1V
Apply For:6-60V MAX 80V battery
Dimension:81*54*18mm
Use: In the setting voltage value, start button play button raised, about stop button role to down key

1. Set the start voltage:
Normal display voltage state, press to a starting voltage button ,to display the start charging voltage. long Press the start button, digital flashes, by start and stop button, set the start charging voltage value.

2. Set Stop voltage:
Normal Voltage normal display mode, press to a Stop voltage button ,to display the Stop charging voltage. long Press the Stop button, digital flashes, by start and stop button, set the Stop charging voltage value.

3. Setting Error:
Energized state while holding down the start / stop button, digital display 888, which is the factory setting.


Package Included:


1 x Digital display Lead acid Battery Charge Control Module

Description
New L293D motor shield, the input voltage DC4.5-25V
600mA OUTPUT CURRENT CAPABILITY PER CHANNEL
1.2A PEAK OUTPUT CURRENT (non repetitive)PER CHANNEL
ENABLE FACILITY
OVERTEMPERATURE PROTECTION
LOGICAL "0" INPUT VOLTAGE UP TO 1.5 V(HIGH NOISE IMMUNITY)
INTERNAL CLAMP DIODES
The Device is a mnolithic integrated high voltage,high current four channel driver designed to accept standard DTL or TTL logic levels and drive inductive loads (such as relays solenoides, DC
and stepping motors) and switching power transistors .To simplify use as two bridges each pair of channels is equipped with an enable input. A separate supply input is provided for the logic, allowing operation at a lower voltage and internal clamp diodes are included. This device is suitable for use in switching applications at frequencies up to 5 kHz.