Kereskedelmi, irodai és ipari

ESP8266 CH340 V3
2.Interactive
3.Programmable
4.Low cost
5.Simple
6.Smart
WI-FI enabled
Ard--uino-like hardware IO
Advanced API for hardware IO, which can dramatically reduce the redundant work for configuring and manipulating hardware.
Code like ard--uino, but interactively in Lua script.
Nodejs style network API
Event-driven API for network applicaitons, which faciliates developers writing code running on a 5mm*5mm sized MCU in Nodejs style.
Greatly speed up your IOT application developing process.
Introduction:
ESP32 is already integrated antenna and RF balun, power amplifier, low-noise amplifiers, filters,
and power management module. The entire solution takes up the least amount of printed circuit board area.
This board is used with 2.4 GHz dual-mode Wi-Fi and Bluetooth chips by TSMC 40nm low power technology,
power and RF properties best, which is safe, reliable, and scalable to a variety of applications.
Features:
High performance-price ratio
Small volume, easily embeded to other products
Strong function with support LWIP protocol, Freertos
Supporting three modes: AP, STA, and AP STA
Supporting Lua program, easily to develop

Batch problem, probe box may be different
 

Batch problem, probe box may be different
 

Batch problem, probe box may be different
 

Performance parameters:
Output power: typical 20W (maximum 30W)
Speaker impedance: 4Ω-8Ω
Total harmonic distortion: <0.04%
Signal to noise ratio: 105dB
Frequency response: 14Hz-100kHz (the maximum range calculated by the RC high-low-pass circuit is 3.29Hz-482.29kHz)
Power supply voltage: recommended ±25V (the highest voltage cannot exceed ±30V, AC 18V full bridge rectifier is 25V)

all is only board,If you need a USB cable, the shop has a link for the USB cable
Features:
Full integration on one board: Mega R3 ATmega2560 and WiFi ESP8266 with memory 32Mb (megabyte)
All of the modules can work together or each separately. And everyone has their own pinout headers
The convenient solution for the development of new projects requiring Uno and WiFi
Via USB you can update sketches and firmvare for ATmega2560 and for ESP8266. For this on board have the USB-serial converter CH340G
Use this board is very simple
The board has DIP-switch, to connect the modules
For example, to: USB and ATmeg2560, USB and ESP8266, ATmega2560 and ESP8266
Table DIP- Switch:
Connection                                                                                       DIP
1            2           3             4            5             6              7
ATmega2560<->ESP8266                         ON         ON        OFF       OFF        OFF        OFF          OFF
USB <->ATmega2560                               OFF        OFF       ON        ON         OFF        OFF          OFF
USB<->ESP8266 (Update firmware or sketch) OFF  OFF       OFF       OFF        ON         ON           ON
USB<->ESP8266 (communication)            OFF        OFF       OFF       OFF        ON         ON           OFF
All independent                                        OFF        OFF       OFF       OFF        OFF        OFF          OFF
Special solution:
USB <->ATmega328<-> ESP8266
DIP                                        SWITH 2
Connection                                          1       2       3      4      5         6           7
USB <-> ATmega2560<-> ESP8266    ON    ON    ON  ON   OFF    OFF       OFF          To RXD3/TXD3
USB converter CH340G connect to RX0/TX0 of ATmega2560
ESP8266 connect to RX3/TX3 of ATmega2560
Size: 10.5x5.3cm/4.13x2.09inch
Quantity: 1 Pc
Note:
Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

What's new about V2.1.0
 
 Use BRT (Bias Resistor Transistor), easier into flash mode.
 Optimize the circuit, the system is more stable.
 
 
New For WeMos D1 R2 V2.1.0 WiFi Uno Based ESP8266 For Arduino Nodemcu Compatible
 
 
Features:
 
Based on the ESP-8266EX.
for Arduino Compatible, you can use it on for Arduino IDE.
NodeMcu Compatible
11 Digital I/O pins
1 Analog Input pin
OTA -- Wireless Upload(Program)
On board switching power supply -- Max 24V input, 5V 1A outpu
 
Programming:
 
The D1 R2 has a micro USB for auto programming.
Also you can programming it using OTA
Warning: All IO is work at 3.3V.
 
 
Package included:
 
 
1 x  For WeMos D1 R2 V2.1.0 WiFi Uno Based ESP8266 For Arduino Nodemcu Compatible

 Nodemcu V3 Lua WiFi module integrated ESP8266 additional memory 32M FLASH, USB serial port ch340g
WiFi modern ESP8266 32MB,
The module is based on a wide range of exploration ESP8266 system chips from expressif.
WiFi modern ESP8266 32MB, compatible with nodemcu board.
The extra memory size is 32MB. This is better for big library projects. You do not have to worry about the size of the memory.
Usb-ttl serial converter ch340g, mini USB socket.
DC 4 ~ 9v PowerIn pin VIN.
Pins 2.54mm (0.1 ") 15 X 2-wire pin set. Do not solder.
Combined with WiFi access points and featured stations microcontrollers using Lua programming language based on simple.
WIFi modern ESP8266 32MB,
Provide: Hardware IO. Can be used in the IDE event-driven API network application 10 d0-d10, PWM function programming, IIC and SPI communication, in a board WiFi wireless network and ADC (A0, etc. can be used as access points and / or stations, host servers ), Connect to the Internet, get or upload data. Developing panels can be used in developing countries.
 

Support Dropshipping and Wholesaling.
100% Original and Good Quality with Free After-sale Warranty.
 
 
Feature:
 
 
Size: 3.5 inches
PCB size: 55.6*85.42mm
Resolution: 320x240
Touch IC: xpt2046
LCD IC: ili9486 ili9488 R61581
Interface: SPI
Voltage: 5V
Applicable models: Raspberry Pi P1 P2 P3
 

Feature
100% Brand new and high quality
Brand new compatible passive speaker buzzer module
Features control the buzzer sounds
Compatible and mini design
Made of PCB material
DIY parts
Color: black
Size:26 x 15 x 10mm
1PCS ×Passive Speaker Buzzer Module

Warm prompt: Dear buyer, Our cheapest transportation services Economic category logistics (SunYou Economic Air Mail ,China Post Ordinary Small Packet Plus ) can be traced only befor it arrive your country,please choose Standard category logistics if you want a full tracking info.
Module description:
1 RS422 interface, two-way communication. B Y Z A ultra far transmission 1000 meters
The 2 module has ESD 15KV protection.
3 on board to increase the limit of 10 ohm current limiting current protection.
4 module with TVS diode. Anti lightning, peak voltage.
The 5 module has 120 ohm termination resistors, which can effectively reduce the interference of long range communication.
6 have the power indicator light and the data receiving and sending indicator light. Panoramic view of state data.
7 module TTL side using 5V DC power supply TXD RXD compatible with 5V logic signal.
8 module uses the original imported MAX490 chips, stability and communication speed is far more than domestic products, up to 2.5MBPS.
9 module size: 5.0cm*2.7cm

 
Product Name:
 
USB-TTL level converter board
 
Application:
1. A variety of satellite STB upgrade
2. routers, hard drives, ADSL, broadband cat or cracked upgrade firmware upgrade
3. Phone, XBOX360, GPS serial communication, vehicle inspection, DVD, etc. Brush
4. STC microcontroller programming, NXP microcontrollers, Renesas microcontrollers, NEC SCM
5. A simple serial communication, HyperTerminal serial debugging tools in common
6. electronics enthusiasts can use the USB signals to TTL signal
 
Features:
1. Imported new original control chip PL2303HX, high-speed stability Brush
2. Set the two real-time monitoring of data transmission indicator data transfer status
3. reserve 3.3V and 5V pin interface to facilitate the supply of different voltage systems require Brush
4. Interface pin parallel with the board, and the board instead of a vertically mounted, leads DuPont wire brush when convenient
5. The entire circuit board using high-quality transparent coating heat-shrinkable tubing, so that the PCB with the outside world into the insulating state
  Thus protecting the metal board is accidentally shorted and burned, due to the use of transparent material, it does not affect the board pick
  Watch the opening screen and indicator monitoring results
6. Support WINXP, WIN7 systems  （can not support win10）
Now basically a computer with a serial port are rarely, playing board or upgrade some equipment when more trouble, USB-TTL good solution to this problem, the computer did not have to worry about the serial port of the problem, directly into the USB and the other end connected to the development board download port or port to upgrade equipment.
 
This adapter board USB to TTL chips imported PL2303, which is the most commonly used are the best use of a chip.
 
 
 
To see the board with a very compact and reasonable dual-panel design, using a standard USB connector with the output pin leads, very easy to connect with other board.
 
Tip: USB-TTL small board with a microcontroller or other products is the connection method:
 
USB-TTL Microcontroller
 
TXD <----> RXD
 
RXD <----> TXD
 
GND <----> GND
 

RS232 RS485 CAN to TTL communication module Serial port module CAN module

5A MPPT Solar Panel Controller DC-DC Step-down CC/CV Charging Module Display LED Blue
Support Dropshipping and Wholesaling.
100% Original and Good Quality with Free After-sale Warranty.
 
5A Buck Constant Voltage Constant Current MPPT
Module Properties: Non-isolated buck module (BUCK)
Input voltage: 6~36 V; Output voltage:1.25~32 V continuously adjustable (the default output 5V); MPPT voltage setting range: 6~36 V.
Output current range: 0.05~5A (The default output current is 3A); Turn lights output range: 0.01~5A (default turn lamp current 0.3A)
Conversion efficiency: up to 95% (efficiency, input & output voltage, current and pressure-related)
Color: Blue
Material: plastic
Operating temperature: -40~ 85 degree
Operating frequency: 180 KHz
Short circuit protection: Yes
Over temperature protection: Yes (automatically shut off the output after overtemperature)
Input reverse polarity protection: None, (if necessary, please add the string into the diode)
Output anti-anti-irrigation protection: None, the output must be connected to the battery plus blocking diode, otherwise it will burn the module.
Installation: 4 Pcs 3mm screws
Connection: IN is the input, OUT is output
Multifunction double display: input voltage, output voltage, output current, output power
Charging indicator: charging red, bright green when fully charged. Turn lamp is the output current detection.
Module dimensions:60 x 31 x 22 mm (without meter)
Applications:
1. It can support high-power LED.
2. It can power supply for electronic devices.
3. For a variety of battery charge, can observe the state of charge.
4. As a car power supply , it can for your cell phone or digital products supply.
5. DIY a voltage Regulator, with constant current function, Short-circuit proof, can protect the load.
6. Charger for all kinds of batteries, with MPPT function, can enhance the charging current to double. With a constant current and prevents battery overcharge, effective protection of the battery.
Package Included:
1 x Step-down Module
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is /- 1-3cm.

if you choosing on a small package and must arrive, please do not buy, we have no way to control the small package logistics, very sorry for it

Features:
Circuit board using military grade plate!
All chips are imported original, not domestic IC, disassemble, renovation comparable.
Import 50V1000uF large capacitance. Compared to other types of governor 100-220uF the value of the advantages of obvious.
Power tube using IRF3205 this big cow, absolutely worry about moving your motor. (Parameter drain current Id maximum: 82A; voltage Vds max: 75V; open state resistance, Rds (on): 0.013 ohm).
Terminals use 8500 high current terminals, labeled 300V20A!
Technical Parameters:
Input voltage: DC 12V-40V
Power: 0.01-400W
Current: rated current 8A, large current 10A, quiescent current 0.02A (standby)
Frequency: 13khz
PWM pulse width speed range: 10% -100%
With 10A fuse, with power reverse, control voltage overvoltage protection
With high quality potentiometer
For positive and negative functions, customers can external positive and negative switch.
Product Specifications:
Size: 75 * 60 * 28mm, four positioning holes from the board edge 5mm, positioning hole diameter 3.2mm.
Weight: 72g
Onboard 10A fuse, fuse 5 * 20mm standard size
Package Included:
1 x 10A 12V-40V Pulse Modulation 13khz PWM DC Motor Adjuster Speed Control Switch

If you want your product can arrive at your hands, please choose the one with the tracking number, because small packet may be lost,so we recommend have tracking number
OV7670 300KP VGA Camera Module for Arduino
Description
OV7670 image sensor, small size, low operating voltage, and provides all the features of the single-chip VGA camera and image processor. Through theSCCB bus control, you can output the entire frame, sub-sampled, take the window way affect the data resolution of 8 bits. VGA image of the product is up to 30 frames / sec. Users can fully control the image quality, data format and transmission mode. The process of image processing functions including gamma curves, white balance, saturation, chroma, and so can beprogrammed through the SCCB interface. OmmiVision image sensor applications unique sensor technology to improve image quality by reducing or eliminating the optical or electronic defect, such as fixed pattern noise, tail-blooming, clear and stable color image.
High sensitivity for low-light applications
Low voltage suitable for embedded applications
Standard SCCB interface compatible with I2C interface
RawRGB to RGB (GRB4: 2:2, RGB565/555/444), YUV (4:2:2) and YCbCr (4:2:2)output format
support VGA, CIF, and from CIF to 40x30 the size
VarioPixel subsampling way
eliminate light stripes, automatic black level calibration image quality control including color saturation, hue, gamma, sharpness ANTI_BLOOM
ISP has eliminate noise and dead pixel compensation function
support image scaling
The lens is the loss of light compensation
50/60Hz detection
the saturation automatically adjust ( UV adjustment)
edge enhancement automatically adjust
Noise Reduction automatically adjust
key parameters
photosensitive array 640X480
IO voltage 2.5V to 3.0V ( internal LDO to core supplies ) the
power operation 60mW/15fpsVGAYUV
Sleep < 20 μ A
temperature operation from -30 ° C to 70 ° C
0 ° C to 50 ° C
( 8 -bit) output format ? YUV/YCbCr4 RGB565/555/444 GRB4: 2:2: 2:2 Raw RGB Data
Optical size of 1/6 "
field of view angle of 25 °
maximum Zhen rate 30fps VGA
Sensitivity 1.3V / (Lux-sec)
signal to noise ratio of 46 dB
dynamic range of 52 dB
browsing mode progressive
electronic exposure
area of 3.6 μ mx 3.6 μ m
dark current 12 mV / s at 60 ° C
Package Included:
1 x CMOS Camera Module ov7670

Object is sensed output 0, output 1 is not sensitive to the time, directly with 3V and 5V microcontroller IO port connected.
Sensing distance 2-40 cm, distance, good anti-jamming capability. (Note: The infrared sensor can not detect all objects get the same distance, objects of different colors of light reflectance of different objects closer darker black shorter distance detected, the sensor 2-40 cm is measured against the white wall of)
Speed, suitable for smart car obstacle avoidance, black and white line tracking, anti-drop, product counters, cutting lines, liquid level detection.
This sensor is made with black and white lines tracing the car ran without black line on white paper, available in concrete The yellow complex environment such as the black line patrol track. As long as the black line around the slightly lighter color than black can, eliminating the traditional moves, so that environmental layout easier.
The sensor 3 to 6V supply, wide range, suitable for 3V and 5V MCU system.
With Enable, EN terminal is equal to "1" when the sensor does not work, equal to "0" when working. Jump on the sensor end cap long after the EN grounding plug (EN long as "0"). To use the EN pin when the jumper cap is removed.
Frequency adjustment potentiometer is used to adjust the carrier frequency of the infrared emission tube, because the integration receiver 38KHZ in particular when the carrier frequency is the most sensitive. The 502 resistor clockwise transferred do (that is, the launch tube at maximum brightness), and then at a white wall tone 103 resistance, has been transferred to the sensing distance is the farthest so far so that the sensor will work in the best state
Working voltage: DC 3.3V-5V
Working current: 20mA
Working temperature: -10degree 50degree
Detection distance : 2-40cm
IO interface: 4 line (-/ /S/EN)
Output signal: TTL Level
Adjusting mode: Multi resistance regulation
Effective angle: 35°
Size: 4.5x1.1cm(approx)
Here we use the obstacle avoidance module and digital 13 interface with LED to build a simple circuit, making the obstacle avoidance warning light, accessing the avoidance sensor to digital 3 interface, when the obstacle avoidance sensor senses the signal, LED light, otherwise off.
Program code:
int Led=13;//define LED interface
int buttonpin=3; //define obstacle avoidance interface
int val;//define Digital variable val
void setup()
pinMode(Led,OUTPUT);//define LED is output interface
pinMode(buttonpin,INPUT);//define obstacle avoidance is output interface
void loop()
val=digitalRead(buttonpin);//reading the value from 3 digital interface to val
if(val==HIGH)//when the obstacle avoidance sensor senses the signal, LED flash
digitalWrite(Led,HIGH);
else
digitalWrite(Led,LOW);
Package Include:
1 X KY-032 Obstacle Avoidance Sensor Module

Description:
MAXIM MAX6675 is an American company with a cold junction compensation, linearity correction, thermocouple break detection ADC Serial type thermocouple, its temperature resolution capability is 0. 25 Degree, cold junction compensation range - 20 ~ 80 Degree, wide operating voltage range 3. 0 ~ 5. 5V
 
 
Operating voltage: 3. 0 ~ 5. 5V
Internal integrated cold junction compensation circuit;
With a simple three serial interface;
Temperature signal can be converted into 12-bit digital
 
 
 
 
Temperature resolution of: 0. 25 Degree;
 
Cold junction compensation range: - 20 ~ 80 Degree,
Embedded thermocouple break detection circuitry.
Using SPI 3 wire communication
type temperature probe
Type temperature range 0-800 degrees
 
 
Package Included:
1 X MAX6675 Thermocouple Temperature Sensor

Sound Blue：
an detect the intensity of the sound environment, use note: the sound sensor can identify the presence of (according to the principle of vibration) or a particular frequency of sound does not recognize the volume of the sound
Sensitivity adjustable digital potentiometer to adjust (blue)
3-5 V working voltage 3.3 V
Output form digital switch output (1 s and 0 s v)
Has a fixed bolt hole, convenient installation
Small board PCB size: 3.2 cm * 1.7 cm
Module wiring instructions
VCC voltage is 3.3 V to 5 V converter (which can be directly connected to 5 V single-chip microcontroller and 3.3 V)
GND external GND
OUT of small plate switch output interface (0 and 1)
Three instructions
Sound module sound intensity is the most sensitive to the environment, commonly used to detect the intensity of the sound of the surroundings.
Module in the intensity of the sound environment than set threshold, the OUT output high level, when the intensity of the sound from the outside environment more than set threshold, the module OUT output low level;
Small digital output board OUT can be attached directly to the microcontroller, through single chip microcomputer to detect the high and low level, thus to detect sound environment;
Small digital output board OUT this shop can be directly driven relay module, which can form a voice-activated switch;
Sound Black：
Features
1. Dimensions: Length 32mm X Width 17mm X Height 15mm
2. Main chip: LM393, electret microphone
3. Working voltage: DC 4~6V
4. Features:
1. With signal output indication.
2. Single signal output.
3. The output valid signal is low level.
4. When there is a sound, it outputs low level and the signal light is on.
5. It can be used for sound-controlled lights, with photosensitive sensors for sound and light alarms, sound control, and sound detection.
6. Circuit board output switch value!
KY-037：
100% Brand New.
Size:32mm*17mm*8mm(length*width*height)
Main chip:LM393, Electret condenser microphone
Working voltage: DC 4-6V
Signal output indication
Single channel signal output
The output effective signal is low level
When there is sound, outputs low level and the signal light
Can be used for Acoustic control light , give sound and light alarm working with Photosensitive sensor ,and sound control, sound detect
Circuit board output switch quantity
Note: The Maximum induction distance is 0.5M
KY-038:
LM393 Microphone Voice Sound Sensor Module Analog Digital Output Sensors Adopt Main Chip Microphone amplifier module

Sound Blue：
an detect the intensity of the sound environment, use note: the sound sensor can identify the presence of (according to the principle of vibration) or a particular frequency of sound does not recognize the volume of the sound
Sensitivity adjustable digital potentiometer to adjust (blue)
3-5 V working voltage 3.3 V
Output form digital switch output (1 s and 0 s v)
Has a fixed bolt hole, convenient installation
Small board PCB size: 3.2 cm * 1.7 cm
Module wiring instructions
VCC voltage is 3.3 V to 5 V converter (which can be directly connected to 5 V single-chip microcontroller and 3.3 V)
GND external GND
OUT of small plate switch output interface (0 and 1)
Three instructions
Sound module sound intensity is the most sensitive to the environment, commonly used to detect the intensity of the sound of the surroundings.
Module in the intensity of the sound environment than set threshold, the OUT output high level, when the intensity of the sound from the outside environment more than set threshold, the module OUT output low level;
Small digital output board OUT can be attached directly to the microcontroller, through single chip microcomputer to detect the high and low level, thus to detect sound environment;
Small digital output board OUT this shop can be directly driven relay module, which can form a voice-activated switch;
Sound Black：
Features
1. Dimensions: Length 32mm X Width 17mm X Height 15mm
2. Main chip: LM393, electret microphone
3. Working voltage: DC 4~6V
4. Features:
1. With signal output indication.
2. Single signal output.
3. The output valid signal is low level.
4. When there is a sound, it outputs low level and the signal light is on.
5. It can be used for sound-controlled lights, with photosensitive sensors for sound and light alarms, sound control, and sound detection.
6. Circuit board output switch value!
KY-037：
100% Brand New.
Size:32mm*17mm*8mm(length*width*height)
Main chip:LM393, Electret condenser microphone
Working voltage: DC 4-6V
Signal output indication
Single channel signal output
The output effective signal is low level
When there is sound, outputs low level and the signal light
Can be used for Acoustic control light , give sound and light alarm working with Photosensitive sensor ,and sound control, sound detect
Circuit board output switch quantity
Note: The Maximum induction distance is 0.5M
KY-038:
LM393 Microphone Voice Sound Sensor Module Analog Digital Output Sensors Adopt Main Chip Microphone amplifier module

Sound Blue：
an detect the intensity of the sound environment, use note: the sound sensor can identify the presence of (according to the principle of vibration) or a particular frequency of sound does not recognize the volume of the sound
Sensitivity adjustable digital potentiometer to adjust (blue)
3-5 V working voltage 3.3 V
Output form digital switch output (1 s and 0 s v)
Has a fixed bolt hole, convenient installation
Small board PCB size: 3.2 cm * 1.7 cm
Module wiring instructions
VCC voltage is 3.3 V to 5 V converter (which can be directly connected to 5 V single-chip microcontroller and 3.3 V)
GND external GND
OUT of small plate switch output interface (0 and 1)
Three instructions
Sound module sound intensity is the most sensitive to the environment, commonly used to detect the intensity of the sound of the surroundings.
Module in the intensity of the sound environment than set threshold, the OUT output high level, when the intensity of the sound from the outside environment more than set threshold, the module OUT output low level;
Small digital output board OUT can be attached directly to the microcontroller, through single chip microcomputer to detect the high and low level, thus to detect sound environment;
Small digital output board OUT this shop can be directly driven relay module, which can form a voice-activated switch;
Sound Black：
Features
1. Dimensions: Length 32mm X Width 17mm X Height 15mm
2. Main chip: LM393, electret microphone
3. Working voltage: DC 4~6V
4. Features:
1. With signal output indication.
2. Single signal output.
3. The output valid signal is low level.
4. When there is a sound, it outputs low level and the signal light is on.
5. It can be used for sound-controlled lights, with photosensitive sensors for sound and light alarms, sound control, and sound detection.
6. Circuit board output switch value!
KY-037：
100% Brand New.
Size:32mm*17mm*8mm(length*width*height)
Main chip:LM393, Electret condenser microphone
Working voltage: DC 4-6V
Signal output indication
Single channel signal output
The output effective signal is low level
When there is sound, outputs low level and the signal light
Can be used for Acoustic control light , give sound and light alarm working with Photosensitive sensor ,and sound control, sound detect
Circuit board output switch quantity
Note: The Maximum induction distance is 0.5M
KY-038:
LM393 Microphone Voice Sound Sensor Module Analog Digital Output Sensors Adopt Main Chip Microphone amplifier module

1x4 matrix keyboard:
 
100% Brand new and good quality
1*4 Matrix membrane switch with FPC circuit 
Single chip microcomputer extended keyboard 
Precise and professional made, stable performance 
Pad Size: 68*20mm 3x4 matrix keyboard:Total Length: 107mm 
 
Pad Size: 69.2 x 76.9 x 0.8mm
Cable Length: 3-1/3" or 86mm (include connector)
Connector: Dupont 7 pins, 0.1" (2.54mm) Pitch
Mount Style: Self-Adherence
Max. Circuit Rating: 35VDC, 100mA
Insulation Spec.: 100M Ohm, 100V
Dielectric Withstand: 250VRms (60Hz, 1min)
Contact Bounce: <=5ms
Life Expectancy: 1 million closures
Operation Temperature: -20 to 40 °C
4x4 matrix keyboard:
 
Contact resistance of 500 ()
Insulation resistance 100M ()
Key Operating Force 150-200N
Rebound time 1 (ms)
Life of 100 million (times)
Operating Temperature 60 ()
1, the electronic characteristics
Circuit Rating: 35V (DC), 100mA, 1W
Contact resistance: 10 ~ 500
(Varies according to the lead lengths and different from those of the material used)
Insulation resistance: 100M 100V
Dielectric Strength: 250VRms (50 ~ 60Hz 1min)
Electric shock jitter: <5ms
Life span: tactile type: one million times
2, the mechanical properties
Operating pressure: Touch feeling: 170 ~ 397g (6 ~ 14oz)
Switch travel: touch-type: 0.6 ~ 1.5mm
3, the environment parameters
Operating temperature: -40 to 80
Storage temperature: -40 to 80
Temperature: from 40,90% to 95% , 240 hours
Vibration: 20G, max. (10 ~~ 200Hz, the Mil-SLD-202 M204.Condition B)
 

1x4 matrix keyboard:
 
100% Brand new and good quality
1*4 Matrix membrane switch with FPC circuit 
Single chip microcomputer extended keyboard 
Precise and professional made, stable performance 
Pad Size: 68*20mm 3x4 matrix keyboard:Total Length: 107mm 
 
Pad Size: 69.2 x 76.9 x 0.8mm
Cable Length: 3-1/3" or 86mm (include connector)
Connector: Dupont 7 pins, 0.1" (2.54mm) Pitch
Mount Style: Self-Adherence
Max. Circuit Rating: 35VDC, 100mA
Insulation Spec.: 100M Ohm, 100V
Dielectric Withstand: 250VRms (60Hz, 1min)
Contact Bounce: <=5ms
Life Expectancy: 1 million closures
Operation Temperature: -20 to 40 °C
4x4 matrix keyboard:
 
Contact resistance of 500 ()
Insulation resistance 100M ()
Key Operating Force 150-200N
Rebound time 1 (ms)
Life of 100 million (times)
Operating Temperature 60 ()
1, the electronic characteristics
Circuit Rating: 35V (DC), 100mA, 1W
Contact resistance: 10 ~ 500
(Varies according to the lead lengths and different from those of the material used)
Insulation resistance: 100M 100V
Dielectric Strength: 250VRms (50 ~ 60Hz 1min)
Electric shock jitter: <5ms
Life span: tactile type: one million times
2, the mechanical properties
Operating pressure: Touch feeling: 170 ~ 397g (6 ~ 14oz)
Switch travel: touch-type: 0.6 ~ 1.5mm
3, the environment parameters
Operating temperature: -40 to 80
Storage temperature: -40 to 80
Temperature: from 40,90% to 95% , 240 hours
Vibration: 20G, max. (10 ~~ 200Hz, the Mil-SLD-202 M204.Condition B)
 

1x4 matrix keyboard:
 
100% Brand new and good quality
1*4 Matrix membrane switch with FPC circuit 
Single chip microcomputer extended keyboard 
Precise and professional made, stable performance 
Pad Size: 68*20mm 3x4 matrix keyboard:Total Length: 107mm 
 
Pad Size: 69.2 x 76.9 x 0.8mm
Cable Length: 3-1/3" or 86mm (include connector)
Connector: Dupont 7 pins, 0.1" (2.54mm) Pitch
Mount Style: Self-Adherence
Max. Circuit Rating: 35VDC, 100mA
Insulation Spec.: 100M Ohm, 100V
Dielectric Withstand: 250VRms (60Hz, 1min)
Contact Bounce: <=5ms
Life Expectancy: 1 million closures
Operation Temperature: -20 to 40 °C
4x4 matrix keyboard:
 
Contact resistance of 500 ()
Insulation resistance 100M ()
Key Operating Force 150-200N
Rebound time 1 (ms)
Life of 100 million (times)
Operating Temperature 60 ()
1, the electronic characteristics
Circuit Rating: 35V (DC), 100mA, 1W
Contact resistance: 10 ~ 500
(Varies according to the lead lengths and different from those of the material used)
Insulation resistance: 100M 100V
Dielectric Strength: 250VRms (50 ~ 60Hz 1min)
Electric shock jitter: <5ms
Life span: tactile type: one million times
2, the mechanical properties
Operating pressure: Touch feeling: 170 ~ 397g (6 ~ 14oz)
Switch travel: touch-type: 0.6 ~ 1.5mm
3, the environment parameters
Operating temperature: -40 to 80
Storage temperature: -40 to 80
Temperature: from 40,90% to 95% , 240 hours
Vibration: 20G, max. (10 ~~ 200Hz, the Mil-SLD-202 M204.Condition B)
 

Please receive this module and leave it in the environment with humidity greater than 80% for 12 hours to ensure the accuracy is restored. The AHT10, a new generation of temperature and humidity sensors, sets a new standard in size and intelligence: it is embedded in a dual-row flat leadless SMD package for reflow soldering with a 4 x 5mm bottom and a height of 1.6mm. The sensor outputs a calibrated digital signal in standard I 2C format. The AHT10 is equipped with a newly designed ASIC-specific chip, an improved MEMS semiconductor capacitive humidity sensing element and a standard on-chip temperature sensing element. Its performance has been greatly improved beyond the reliability level of previous generation sensors. The first generation of temperature and humidity sensors have been improved to make them more stable in harsh environments. Characteristic: 1. Module size: 16*11 mm 2. Interface type: I2C 3. Working voltage: 1.8 - 6.0 V 4. Interface size: 4*2.54mm pitch 5. Humidity accuracy: typical ± 2% 6. Humidity resolution: 0.024% 7. Temperature accuracy: typical ± 0.3 ° C 8. Temperature resolution: Typical 0.01 °C 9. Working temperature: -40°C--85°C

Features:
100% Brand New and High Quality
Can be used for multimeter, converted to lithium battery charging
For example: VIN Port input 5V solar panels, BAT port can output 4.2V to charger 3.7V 18650 battery
Note: The OUT Port can output an adjustable voltage.
Specifications:
Input voltage: 4.5-8V DC
Output voltage: 4.3-27V DC (Continuously adjustable)
Charging voltage: 4.2V DC
Charging current: Max. 1A
Discharging current: Max. 2A
Size: 3.3x2.3cm/1.3x0.91"
Quantity: 1 Pcs
Note:
Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Description:
TP5100 is a double switch buck 8.4V, single cell 4. 2V lithium battery charge management chip. Its ultra-compact QFN16 package and simple external circuit, making TP5100 ideal for portable equipment so large current charging management applications.Meanwhile, TP5100 built-in input overcurrent, undervoltage protection, over temperature protection, short circuit protection, battery temperature monitoring, reverse battery protection. 
  
TP5100 have 5V-18V wide input voltage, dual battery trickle charge into pre-charge, constant current, constant voltage three phase, pre-charge current trickle charge current through an external resistor adjustment, the maximum charge current up to 2A. TP5100 with a frequency of 400kHz switching mode makes it possible to use a smaller outer Suo device and the large current charging still maintain a smaller amount of heat. 
  
TP51OO built-in power PMOSFET, anti-intrusion circuit, so no anti-intrusion protection and other external Schottky diode. 
 
  
Features: 
 
- Double 8.4v / 4.2v lithium rechargeable single 
- Programmable charge current. 0. 1A-2A 
- Programmable steady precharge current 10% -100% . 
- Wide operating voltage, maximum reach I8V 
- Red and green LED charge status indicator 
- Chip temperature protection, overcurrent protection, undervoltage protection 
- Battery temperature protection, reverse battery shutdown, short circuit protection 
- Switching frequency 400Khz, usable inductance 20uH and more 
- PWR_ON Power battery for switching control 
 
  
Maximum Ratings: 
 
- Static input supply voltage (VlN): 20V 
- BAI: -8.4V-20V 
- BAT Short-Circuit Duration: Continuous 
- Operating environment Temperature range: -40 ° -85 ° 
- Storage temperature range: -65 ° - 125 ° 
  
 
Application: 
 
- Portable equipment, various chargers 
- Smartphone, PDA, mobile cellular telephone 
- MP4, MP5 players, tablets 
- HM 
- Power Tools 
- Walkie-talkie 
  
Default shipping settings: 4.2V 2A. The board has with LED, and LED's external reserve position. 
  
Size: 25 * 17 * 5mm ultra-small size 
Input voltage: 5-18V DC power supply 
Charge status: full and unloaded blue lights, charging red.

Only provide the following information parameters, do not provide technical support, will only use to buy, thank you!
Quality characteristics:
1, the transmitter module and the market fixed code, learning code with the same frequency to receive any supporting the use of modules can be equipped with our wireless receiver module.
2, sound table frequency stability, stable performance; wide operating voltage range; product consistency is good, cost-effective.
Precautions:
Please refer to our foot order in detail, and check the order of your host's foot to see if it is the same.
Wireless Transmitter Module Wireless Transmitter Transmitter Panel 3-12V Universal Voltage
Pin and instructions:
Pin (from left to right) and instructions:
Pin Name Function Description
1 ATAD data input pin
2 VCC power positive
3 GND power supply negative
The transmitter module has three external interfaces, one in English. "VCC" means the power supply positive, "ATAD" means input, "GND" means the power supply negative.
use:Remote control electric door, remote control garage door, remote control retractable door, remote control shutter, remote control, remote control, remote control, remote control, remote control, Remote control, remote control, remote control, remote control, remote control, remote control, remote control, remote control, remote control, remote control, remote control, remote control, remote control, remote control, remote control, remote control
First, the technical parameters
Product Name: Without Encoding Transmitter Module
Model: MX-F01
Working voltage: 3-12V
Operating frequency: 315MHz
Standby current: 0mA
Working current: 20-28mA
Transmission distance:> 500m (open receiving plate sensitivity above -103dBm distance)
Output power: 16dBm (40mW)
Transmission rate:
Modulation: OOK (amplitude modulation)
Working temperature: -10 ~ 70
Size: 19 × 19 × 8mm
Note:
Such as pro-distant distance requirements, can be accessed by a quarter-wavelength antenna, generally 50 ohm single-core wire, the antenna length of 315M is about 23cm, 433M of about 17cm;
Antenna position on the module to receive the effect is also affected, the installation, the antenna as far as possible straight away from the shield, high pressure, and interference sources;
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Technology to create the future, this is a remote control era!
*Into the door before, can not open the first light, automatically open the door for you, every time you enter the bright and spacious home?
*When you drive home, every time you have to get off to drive the garage door, have you ever thought that every time you drive home, garage door, the lights automatically open for you?
*Do you feel inconvenient when you need to turn on the lights and turn off the lights in a warm blanket in winter or in a closed mosquito net in summer?
*If there is no street at home, go home at night to find the key to open the door, do you feel some inconvenience?
*Night to rest, you need to turn off the lights go back to the bedroom, or go to the bedroom to open the lights and then turn off the living room lights, so back and forth running whether you feel helpless?
*Before going to bed or going out, always have one to turn off the lights, there is no way to turn them off once
Friends party, some people want to use the bathroom, he is not know which is the toilet lighting switch?
*When you are lying in bed reading or TV feel sleepy, you can use the remote control can turn off the lights TV peace of mind, from your hard work, especially when the weather is cold
*Sleep with the remote control before turning off the TV

Up for sale is a MELEXIS MLX90614ESF-BAA-000-TU-ND non-contact infrared thermometer for Arduino, 
or any microcontroller that can communicate with it through it's I2C interface. 
This sensor comes with a breakout board with all of the components needed for operation and two types of pins. 
They are unsoldered. Please indicate if you would like one or the other soldered. 
There are two solder jumpers for the I2C interface that may or may not need to be soldered depending on your application, 
but will not for most uses.
Features and Benefits: 
Small size, low cost 
Mounted on a breakout board with two types of pins 
10k Pull up resistors for the I2C interface with optional solder jumpers 
Easy to integrate 
Factory calibrated in wide temperature range: 
-40… 125°C for sensor temperature and 
-70… 380°C for object temperature. 
High accuracy of 0.5°C over wide temperaturerange 
(0… 50°C for both Ta and To) High (medical) accuracy calibration 
Measurement resolution of 0.02°C 
Single and dual zone versions 
SMBus compatible digital interface 
Customizable PWM output for continuousreading 
Simple adaptation for 8…16V applications 
Sleep mode for reduced power consumption 
Different package options for applications andmeasurements versatility 
Automotive grade
Applications Examples: 
High precision non-contact temperaturemeasurements 
Thermal Comfort sensor for Mobile AirConditioning control system 
Temperature sensing element for residential, 
commercial and industrial building airconditioning Windshield defogging 
Automotive blind angle detection 
Industrial temperature control of moving parts 
Temperature control in printers and copiers 
Home appliances with temperature control 
Healthcare 
Livestock monitoring 
Movement detection 
Multiple zone temperature control – up to 127sensors can be read via common 2 wires 
Thermal relay / alert 
 

This is a newly designed product, using the Taiwan prolific production company PL2303TA chips,PL2303TA perfectly compatible with win XP/VISTA/7/8/8.1 system
PL2303TA provides a convenient solution for connecting an RS232-like full-duplex asynchronous serial device to any Universal Serial Bus (USB) capable host. PL2303TA highly compatible drivers could simulate the traditional COM port on most operating systems allowing the existing applications based on COM port to easily migrate and be made USB ready without having to rewrite the COM port software application.
By taking advantage of USB bulk transfer mode, large data buffers, and automatic flow control, PL2303TA is capable of achieving higher throughput compared to traditional UART (Universal Asynchronous Receiver Transmitter) ports.When real RS232 signaling is not required, baud rate higher than 115200 bps could be used for even higher performance. The flexible baud rate generator of PL2303TA could be programmed to generate any rate between 75 bps and 6M bps.
PL2303TA is exclusively designed for mobile and embedded solutions in mind, providing a small footprint that could easily fit in to any connectors and handheld devices. With very small power consumption in either operating or suspend mode, PL2303TA is perfect for bus powered operation with plenty of power left for the attached devices. Flexible signal level requirement on the RS232-like serial port side also allows PL2303TA to connect directly to any 3.3V~1.8V range devices.
This product is designed for laboratory, product testing, low-cost MCU communications and other applications, there are four lead,
Red 5 V
Black GND
White RXD
Green TXD
 
 
Product Applications:
Single-chip upgrade solution for Legacy RS232 devices to USB interface
USB to RS232 converters/cables/dongles
Healthcare/Medical USB Interface Data Transfer Cable
Personal Infotainment/Media Player Docking USB Interface
Cellular/PDA USB Interface Data Transfer Cable
Serial-over-IP Wireless Solution
USB Barcode/Smart Card Readers
GPS/Navigation USB Interface
Point-of-Sale (POS) Terminals/Printers
PC Docking Station/Port Replicators
Industrial/Instrumentation/Automation Control USB Interface
USB Modem/Wireless/Zigbee USB Interface
Set-Top Box (STB) / Home USB Interface
BatteryCharger Application
MCU-based devices to USB interface
 
 
 
Package Included:
 
1PCS*PL2303TA USB TTL to RS232 Converter Serial Cable module for win XP/VISTA/7/8/8.1

Link: https://pan.baidu.com/s/1DfRrnu0K5sQB-kpJbGVkMA
Extraction code: 1234
LGT8F328P

Using overcurrent protection device.
The high power non-polar capacitor, the low frequency part is converted by inductance to achieve a clear and full effect.
PCB floor with fire board, thick copper layer can withstand large current.
Use of polypropylene film divider special capacitance and high temperature resistance wire inductance coil.
The crossover is a circuit device in the speaker, which separates the sound signals of different frequency bands (treble, midrange, and bass), amplifies them separately, and then sends them to the speakers of the corresponding frequency bands for playback.
Frequency Divider only, other accessories demo in the picture is not included!
Specifications:
Item Type: Speaker Frequency Divider
Material: ABS
Size of Circuit Board: 45x56mm / 1.77x2.20inch
Color: As picture shown
Quantity: 1 Pc
Maximum Power: 80W
Impedance: 4-8Ω
Application: Speakers under 5 inch
Note:
Please allow 0-1mm error due to manual measurement, pls make sure you do not mind before you bid.
Due to the difference between monitors, the picture may not reflect the actual color of the item. Thank you!

【Features】
Model: 8-bit 5050 full color LED module
Size: 11 * 15mm
Chip: WS2811 (built-in LED)
LED: 5050 package RGB full color highlight
Voltage: 5V
Port: number
5050 bright LED, built-in control chip, only one IO port can control multiple LEDs
Chip built-in shaping circuit, the signal distortion will not accumulate, stable display
Three-color 256-level brightness adjustment, 16 million color true color display, scanning frequency of not less than 400Hz / S
Serial-level interface, through a signal line to complete the data reception and decoding
Refresh rate of 30 frames / sec, the low-speed mode with the series of not less than 512 points
Data transceiver speeds up to 800Kbps
Highlight LED, light color brightness consistency
Both ends have a series interface, can be directly connected
【Shipping list】
1.8 bit 5050 full color LED module one (finished, tested good, static bag packaging)

ADS1115 Purple ：
For microcontrollers without an analog-to-digital converter or when you want a higher-precision ADC, the ADS1115 provides 16-bit precision at 860 samples/second over I2C. The chip can be configured as 4 single-ended input channels, or two differential channels. As a nice bonus, it even includes a programmable gain amplifier, up to x16, to help boost up smaller single/differential signals to the full range. We like this ADC because it can run from 2V to 5V power/logic, can measure a large range of signals and its super easy to use. It is a great general purpose 16 bit converter.
The chip's fairly small so it comes on a breakout board with ferrites to keep the AVDD and AGND quiet. Interfacing is done via I2C. The address can be changed to one of four options (see the datasheet table 5) so you can have up to 4 ADS1115's connected on a single 2-wire I2C bus for 16 single ended inputs.
WIDE SUPPLY RANGE: 2.0V to 5.5V
LOW CURRENT CONSUMPTION: Continuous Mode: Only 150A Single-Shot Mode: Auto Shut-Down
PROGRAMMABLE DATA RATE: 8SPS to 860SPS
INTERNAL LOW-DRIFT VOLTAGE REFERENCE
INTERNAL OSCILLATOR
INTERNAL PGA
I2C INTERFACE: Pin-Selectable Addresses
FOUR SINGLE-ENDED OR TWO DIFFERENTIAL INPUTS
PROGRAMMABLE COMPARATOR
This board/chip uses I2C 7-bit addresses between 0x48-0x4B, selectable with jumpers.

ADS1115 Purple ：
For microcontrollers without an analog-to-digital converter or when you want a higher-precision ADC, the ADS1115 provides 16-bit precision at 860 samples/second over I2C. The chip can be configured as 4 single-ended input channels, or two differential channels. As a nice bonus, it even includes a programmable gain amplifier, up to x16, to help boost up smaller single/differential signals to the full range. We like this ADC because it can run from 2V to 5V power/logic, can measure a large range of signals and its super easy to use. It is a great general purpose 16 bit converter.
The chip's fairly small so it comes on a breakout board with ferrites to keep the AVDD and AGND quiet. Interfacing is done via I2C. The address can be changed to one of four options (see the datasheet table 5) so you can have up to 4 ADS1115's connected on a single 2-wire I2C bus for 16 single ended inputs.
WIDE SUPPLY RANGE: 2.0V to 5.5V
LOW CURRENT CONSUMPTION: Continuous Mode: Only 150A Single-Shot Mode: Auto Shut-Down
PROGRAMMABLE DATA RATE: 8SPS to 860SPS
INTERNAL LOW-DRIFT VOLTAGE REFERENCE
INTERNAL OSCILLATOR
INTERNAL PGA
I2C INTERFACE: Pin-Selectable Addresses
FOUR SINGLE-ENDED OR TWO DIFFERENTIAL INPUTS
PROGRAMMABLE COMPARATOR
This board/chip uses I2C 7-bit addresses between 0x48-0x4B, selectable with jumpers.

Test Clip SOP8 Foot BIOS Clip Wide and Narrow Body 8 Foot Universal Clip Adapter Clip Burning Chip Clip

Test Clip SOP8 Foot BIOS Clip Wide and Narrow Body 8 Foot Universal Clip Adapter Clip Burning Chip Clip

Test Clip SOP8 Foot BIOS Clip Wide and Narrow Body 8 Foot Universal Clip Adapter Clip Burning Chip Clip

Test Clip SOP8 Foot BIOS Clip Wide and Narrow Body 8 Foot Universal Clip Adapter Clip Burning Chip Clip