Module

The Assembly Steps: Step 1: Welding circuit Electric welding part is simpler, welding sequence according to the principle of component level from low to high, the first welding eight resistance, is important to use multimeter to confirm resistance is correct, D4, D5 R13 R14 can temporarily not welding, integrated circuit chips can temporarily not inserted Step 2: Mechanical assembly The red line is connected to the 3V positive power supply, the yellow line grounding, excess wire can be used for motor wire. Step 3: The installation of a photoelectric circuit Photosensitive resistance and light-emitting diodes (note polarity) is reverse-mounted on the PCB, and the ground distance is about 5 mm, both photosensitive resistance and light-emitting diodes are 5 mm distance. Finally, you can power test. Step 4: Vehicle debugging The right direction is along the universal wheel direction, if you press and hold the left photoresistor, the wheels on the right side of the car should be rotated. Press and hold the right photoresistor, the wheels on the left side of the car should be rotated, if the car driving back, can also exchange the wiring of two motors, if the one side normal and the other side back up, as long as you can swap wiring of back side. Package Include: 1 X Module Smart Tracking Robot Car Electronic DIY Kit With Reduction Motor Set 1 X User Manual

POWER MONITOR MODULE; 3.16V-26V RANGE; 1A MAX; I2C INTERFACE; UP TO 9 DEVICES USABLE; I/O PIN (LOW) WITH LED INDICATION FOR ALERT

Module parameters: Input voltage: 6V-32V Output voltage: 1.5-32V continuously adjustable (can only be used step-down module, the input must be greater than the output 1.5V or more) Output current: adjustable, the maximum 5A (recommended in the use of 4.5A, when exceed 3A or 35W the best to strengthen the cooling! Suggest using a small fan at the input terminal! Constant current requires an output voltage of 2V or more to be adjusted, the current regulation, only in the constant current state will work, constant current is mainly directly used to the low resistance battery charge or LED working current limit and other use, please make sure about this before you order it. Output power: up to 75W (recommended in the use of 50W, if uses large pressure difference, please reduce the power) Operating temperature: -20 to +70 degrees (pay attention to the power tube temperature, when exceed please strengthen the cooling) Operating frequency: 180KHz Conversion efficiency: up to 96% Short circuit protection: Yes, constant current Current set constant current value Over-temperature protection: Yes (over-temperature automatically turn off the output) Input reverse protection: Yes Output reverse flow: None, for charging please add a diode! Installation: 8pcs pillars, 8pcs 3mm screws Wiring method: wiring terminal or soldering terminal, VIN for the input, VOUT for the output Module size: 65.6mm x 40mm x 25mm (L*W*H) Weight: 77g Calibration method: The module has a calibration function, don't worry about measuring inaccurate problems, if you find the measurment is not inaccurate you can use the following methods calibration. Just need to calibration once for the first time! Voltage calibration: In the case of power down, press and hold the "SET" button, power on, enter the voltage calibration mode, the LCD screen starts to flash, release the set button, press the "Set" key to add, "OK" to reduce, calibrate correct input voltage, such as: the input voltage is 12.65V, then adjust the current voltage to 12.65V, after 2 seconds it automatic save, power off and exit to complete the calibration! Current calibration: For no-load current display, or current is too large! In the case of power off, press and hold the "OK" button, power on, enter the current calibration mode, the LCD screen starts to flash, release the "OK" button, press the "Set" button to add, "OK" button to reduce, calibrate correct current, such as: no load display 0.02A, then adjust to 0.00A, after 2 seconds it automatic save, power off and exit to complete the calibration! Special Note: Some customers feedback that the output voltage can not be adjusted, this is due to the factory default voltage is 20V. When you encounter this problem, please counterclockwise rotation ADJ-V potentiometer 10 laps above, until the voltage value changes, and then the module can be normal adjustment of the voltage. Note: USB output voltage and the module output voltage needs to be consistent, when the USB indicator does not light, means USB has no output, when the USB light is set, it is not fixed 5V output, when charging USB device please make sure the voltage is 5V, if higher than 5.5V screen will flash, it will be reminded to adjust the voltage, otherwise it may damage your device, USB output power is turned off by default, to ensure that mistakenly plug USB will not damage the device. Setting Description: Setting key can be set to four kinds of display mode: 1. F-0 mode: display output voltage; 2. F-1 mode: display input voltage; 3. F-2 mode: alternately display input and output voltage; 4. USB mode: display USB output voltage and turn on or off the USB output; Instructions: press the "set" button, the cycle shows four kinds of display mode, the corresponding indicator light will on/off, press the "OK" key to save and exit, press the "OK" button to switch the LCD backlight. Package includes: 1 x 5A DC-DC Adjustable Step Down Power Supply Module (Board color will send in random)

Module Features:   1, working voltage: 2.3V-5.5V. Typical 3.3V, 5V 2, the working temperature range: -40 ~ +105 3, the default onboard 25MHZ (precision of 25ppm) imported active crystal oscillator, stepper accuracy of 0.1HZ. Access to external clock reference through the tee, can have a higher frequency resolution 4, reference to the official DEMO line with its wiring rules, the line is more stable and reliable. 5, can output sine wave triangular wave and square wave, frequency phase programmable sine wave and triangular wave amplitude 0.6VPP or so, a slight decline in high frequency, sine and triangular wave output impedance of 200R; square wave slightly smaller than the supply voltage. 6, PCB size: 20mm X 35mm. Application:   Frequency stimulus / waveform generation Flow and air flow measurement Sensor Applications: Proximity, Motion and Defect Detection Line loss / attenuation Test and medical equipment Scan / Clock Generator Time Domain Reflectometry (TDR) Applications Package included: 1 x AD9833 Module

  Kits list: 1 x Active buzzer module 1 x  Passive buzzer module 1 x  Common cathode RED&GREEN LED module 1 x  Two color common cathode LED module 1 x  Knock sensor module 1 x  Shock switch sensor module 1 x  Photo resistor sensor module 1 x  Push button module 1 x  Tilt switch module 1 x  RGB LED module 1 x  Infrared transmit module 1 x  RGB colorful LED module 1 x  Hydrargyrum switch sensor module 1 x  Colorful auto flash module 1 x  Magnet-ring sensor module 1 x  Hall sensor module 1 x  Infrared receive sensor module 1 x  Analogy hall sensor module 1 x  Magic ring module 1 x  Rotate encode module 1 x  Light break sensor module 1 x  Finger pulse sensor module 1 x  Magnetic spring module 1 x  Obstacle avoidance sensor module 1 x  Tracking sensor module 1 x  Microphone sensor module 1 x  Laser transmit module 1 x  Relay module 1 x  Analog temperature sensor module 1 x  18b20 temperature sensor module 1 x  Digital temperature sensor module 1 x  Linear hall Sensor module 1 x  Flame sensor module 1 x  High sensitive voice sensor module 1 x  Humidity sensor module 1 x  Joystick PS2 module 1 x  Touch sensor module Package included: 1 x Sensor module board set for Arduino(37 types in total)

File download: Click to open We will default sending carton package to replace the plastic box, but there may some stocks are still packaging with plastic box, please note about this before you buy it. Kit list: 1 x Active buzzer module 1 x Passive buzzer module 1 x Common cathode RED&GREEN LED module 1 x Two color common cathode LED module 1 x Knock sensor module 1 x Shock switch sensor module 1 x Photo resistor sensor module 1 x Push button module 1 x Tilt switch module 1 x RGB LED module 1 x Infrared transmit module 1 x RGB colorful LED module 1 x Hydrargyrum switch sensor module 1 x Colorful auto flash module 1 x Magnet-ring sensor module 1 x Hall sensor module 1 x Infrared receive sensor module 1 x Analogy hall sensor module 1 x Magic ring module 1 x Rotate encode module 1 x Light break sensor module 1 x Finger pulse sensor module 1 x Magnetic spring module 1 x Obstacle avoidance sensor module 1 x Tracking sensor module 1 x Microphone sensor module 1 x Laser transmit module 1 x Relay module 1 x Analog temperature sensor module 1 x 18b20 temperature sensor module 1 x Digital temperature sensor module 1 x Linear hall Sensor module 1 x Flame sensor module 1 x High sensitive voice sensor module 1 x Humidity sensor module 1 x Joystick PS2 module 1 x Touch sensor module Package included: 1 x Sensor module board set for Arduino(37 types in total)    

Plastic bag package only. Want carton box package for this kits? Please skip product ID: 89734 File download: Click to open Kits list: 1 x Active buzzer module 1 x Passive buzzer module 1 x Common cathode RED&GREEN LED module 1 x Two color common cathode LED module 1 x Knock sensor module 1 x Shock switch sensor module 1 x Photo resistor sensor module 1 x Push button module 1 x Tilt switch module 1 x RGB LED module 1 x Infrared transmit module 1 x RGB colorful LED module 1 x Hydrargyrum switch sensor module 1 x Colorful auto flash module 1 x Magnet-ring sensor module 1 x Hall sensor module 1 x Infrared receive sensor module 1 x Analogy hall sensor module 1 x Magic ring module 1 x Rotate encode module 1 x Light break sensor module 1 x Finger pulse sensor module 1 x Magnetic spring module 1 x Obstacle avoidance sensor module 1 x Tracking sensor module 1 x Microphone sensor module 1 x Laser transmit module 1 x Relay module 1 x Analog temperature sensor module 1 x 18b20 temperature sensor module 1 x Digital temperature sensor module 1 x Linear hall Sensor module 1 x Flame sensor module 1 x High sensitive voice sensor module 1 x Humidity sensor module 1 x Joystick PS2 module 1 x Touch sensor module Package included: 1 x Sensor module board set for Arduino(37 types in total)

Carton box package only.  Want plastic bag package with favorable price for this kits? Please skip Kits list: 1 x Active buzzer module 1 x Passive buzzer module 1 x Common cathode RED&GREEN LED module 1 x Two color common cathode LED module 1 x Knock sensor module 1 x Shock switch sensor module 1 x Photo resistor sensor module 1 x Push button module 1 x Tilt switch module 1 x RGB LED module 1 x Infrared transmit module 1 x RGB colorful LED module 1 x Hydrargyrum switch sensor module 1 x Colorful auto flash module 1 x Magnet-ring sensor module 1 x Hall sensor module 1 x Infrared receive sensor module 1 x Analogy hall sensor module 1 x Magic ring module 1 x Rotate encode module 1 x Light break sensor module 1 x Finger pulse sensor module 1 x Magnetic spring module 1 x Obstacle avoidance sensor module 1 x Tracking sensor module 1 x Microphone sensor module 1 x Laser transmit module 1 x Relay module 1 x Analog temperature sensor module 1 x 18b20 temperature sensor module 1 x Digital temperature sensor module 1 x Linear hall Sensor module 1 x Flame sensor module 1 x High sensitive voice sensor module 1 x Humidity sensor module 1 x Joystick PS2 module 1 x Touch sensor module Package included: 1 x Sensor module board set for Arduino(37 types in total)

Carton box package only. Want plastic bag package with favorable price for this kits? Please skip product ID: 1137051 File download: Click to open Kits list: 1 x Active buzzer module 1 x Passive buzzer module 1 x Common cathode RED&GREEN LED module 1 x Two color common cathode LED module 1 x Knock sensor module 1 x Shock switch sensor module 1 x Photo resistor sensor module 1 x Push button module 1 x Tilt switch module 1 x RGB LED module 1 x Infrared transmit module 1 x RGB colorful LED module 1 x Hydrargyrum switch sensor module 1 x Colorful auto flash module 1 x Magnet-ring sensor module 1 x Hall sensor module 1 x Infrared receive sensor module 1 x Analogy hall sensor module 1 x Magic ring module 1 x Rotate encode module 1 x Light break sensor module 1 x Finger pulse sensor module 1 x Magnetic spring module 1 x Obstacle avoidance sensor module 1 x Tracking sensor module 1 x Microphone sensor module 1 x Laser transmit module 1 x Relay module 1 x Analog temperature sensor module 1 x 18b20 temperature sensor module 1 x Digital temperature sensor module 1 x Linear hall Sensor module 1 x Flame sensor module 1 x High sensitive voice sensor module 1 x Humidity sensor module 1 x Joystick PS2 module 1 x Touch sensor module Package included: 1 x Sensor module board set for Arduino(37 types in total)

5Pcs HC-12 433 SI4463 Wireless Serial Module Remote 1000M With Antenna Note: HC-11 cannot communicate with the HC-12, they work independently, in pairs Features: Supply voltage: 3.2V~5.5V. (If the module you want to work long hours in the emission state, it is recommended that when the supply voltage exceeds 4.5V threaded a 1N4007 diode to prevent module built-in LDO heated) Default address range (open field test): About 600m (maximum communication distance adjustable reach 1000m, the baud rate is 5000bps) Default idle current: 16MA (In different working modes operating current is different) Module dimensions: 27.8 x 14.4 x 4mm Operating frequency range: 433.4-473.0MHz, up to 100 channels of communication The maximum transmit power: 100mW (settable) Module support software upgrade Default factory settings: Mode FU3, baud rate is 9600bps, communication channels CH001 (433.4M) Package included: 5 x HC-12 433 Serial module AT command set:   Module parameters, AT command set AT command is used to set the parameters of the function module and switching modules need to exit the setting mode after setting to take effect. Meanwhile, modify the parameters and functions, power-down is not lost.   Enter the command mode: The first entry mode - normal use (has the power) in the first 5-pin "SET" is set low; The second mode of entry - power, 5th pin "SET" again first set low on power. Both methods can make the module into AT command mode, release ("SET" pin is not connected low) to exit command mode. After the exit command mode, if you change the module function, the function will be cut to the appropriate state. The second way is fixed in serial format 9600, N, 1 into the AT.   Instructions: 1. AT Test instructions Example: Send module commands "AT", the module returns "OK".   2. AT + Bxxxx Change the serial port baud rate command. You can set the baud rate is 1200bps, 2400bps, 4800bps, 9600bps, 19200bps, 38400bps, 57600bps and 115200bps. The factory default is 9600bps. Example: Set the module serial port baud rate is 19200bps, please send module command "AT + B19200", the module returns "OK + B19200".   3. AT + Cxxx Change the wireless communication channel, selectable from 001 to 127 (more than 100 radio channels after the communication distance not guaranteed). The default value is 001 radio channels, operating frequency is 433.4MHz. Step channel is 400KHz, the operating frequency of the channel 100 is 473.0 MHz.   Example: Set module to channel 21, please send module command "AT + C021", the module returns "OK + C021". After exiting the command mode, the module in the first 21 channels, operating frequency is 441.4 MHz. Note: Because the wireless receiver module sensitivity HC-12 is relatively high, the baud rate is greater than when air 58000 bps, 5 must be shifted to the adjacent channel use. When the air baud rate is not greater than 58000 bps, if the short distance (10 meters) communication, but also need to stagger five adjacent channel use.   4. AT + FUx Change the module serial pass-through mode, there FU1, FU2 and FU3 three modes. Module default mode is FU3, two serial pass-through mode module must be set to the same communication. See detailed above, "wireless serial pass-through" part. Example: Send module commands "AT + FU1", the module returns "AT + OK".   5. AT + Px The default setting is 8, maximum transmit power, communication distances. Transmit power level is set to 1, the minimum transmission power. In general, the transmission power of each drop 6dB, communication distance will be reduced by half. Example: Send module commands "AT + P 5", the module returns "OK + P5". After exiting the command mode, the module transmit power is +11 dBm. Package included: 1 x HC-12 module

3Pcs HC-12 433 SI4463 Wireless Serial Module Remote 1000M With Antenna Note: HC-11 cannot communicate with the HC-12, they work independently, in pairs Features: Supply voltage: 3.2V~5.5V. (If the module you want to work long hours in the emission state, it is recommended that when the supply voltage exceeds 4.5V threaded a 1N4007 diode to prevent module built-in LDO heated) Default address range (open field test): About 600m (maximum communication distance adjustable reach 1000m, the baud rate is 5000bps) Default idle current: 16MA (In different working modes operating current is different) Module dimensions: 27.8 x 14.4 x 4mm Operating frequency range: 433.4-473.0MHz, up to 100 channels of communication The maximum transmit power: 100mW (settable) Module support software upgrade Default factory settings: Mode FU3, baud rate is 9600bps, communication channels CH001 (433.4M) Package included: 3 x HC-12 433 Serial module AT command set:   Module parameters, AT command set AT command is used to set the parameters of the function module and switching modules need to exit the setting mode after setting to take effect. Meanwhile, modify the parameters and functions, power-down is not lost.   Enter the command mode: The first entry mode - normal use (has the power) in the first 5-pin "SET" is set low; The second mode of entry - power, 5th pin "SET" again first set low on power. Both methods can make the module into AT command mode, release ("SET" pin is not connected low) to exit command mode. After the exit command mode, if you change the module function, the function will be cut to the appropriate state. The second way is fixed in serial format 9600, N, 1 into the AT.   Instructions: 1. AT Test instructions Example: Send module commands "AT", the module returns "OK".   2. AT + Bxxxx Change the serial port baud rate command. You can set the baud rate is 1200bps, 2400bps, 4800bps, 9600bps, 19200bps, 38400bps, 57600bps and 115200bps. The factory default is 9600bps. Example: Set the module serial port baud rate is 19200bps, please send module command "AT + B19200", the module returns "OK + B19200".   3. AT + Cxxx Change the wireless communication channel, selectable from 001 to 127 (more than 100 radio channels after the communication distance not guaranteed). The default value is 001 radio channels, operating frequency is 433.4MHz. Step channel is 400KHz, the operating frequency of the channel 100 is 473.0 MHz.   Example: Set module to channel 21, please send module command "AT + C021", the module returns "OK + C021". After exiting the command mode, the module in the first 21 channels, operating frequency is 441.4 MHz. Note: Because the wireless receiver module sensitivity HC-12 is relatively high, the baud rate is greater than when air 58000 bps, 5 must be shifted to the adjacent channel use. When the air baud rate is not greater than 58000 bps, if the short distance (10 meters) communication, but also need to stagger five adjacent channel use.   4. AT + FUx Change the module serial pass-through mode, there FU1, FU2 and FU3 three modes. Module default mode is FU3, two serial pass-through mode module must be set to the same communication. See detailed above, "wireless serial pass-through" part. Example: Send module commands "AT + FU1", the module returns "AT + OK".   5. AT + Px The default setting is 8, maximum transmit power, communication distances. Transmit power level is set to 1, the minimum transmission power. In general, the transmission power of each drop 6dB, communication distance will be reduced by half. Example: Send module commands "AT + P 5", the module returns "OK + P5". After exiting the command mode, the module transmit power is +11 dBm. Package included: 1 x HC-12 module

Summarize: LC 5V WiFi relay module carried a ESP8266 WiFi module and microcontroller. It will send the serial port instructions to the cell phone APP and Implementation within the local area network (LAN) for wireless control relay. Function and characteristics: Onboard ESP8266 WIFI module, AP mode 5 client can be connected at the same time; Module has two work modes: 1, cell phones, carry on the WiFi module;2, mobile phone and WiFI module Carrying on the same router, by mobile phone APP to control relay Transmission distance: 1.The open environment, the mobile phone when carrying on the WIFI module maximum transmission distance of 400 m 2.When the WiFI module and cell phone carrying on the router at the same time the signal transmission distance in accordance with the router On the weak Onboard 5 v, 10 A / 250 v AC 10 A / 30 v DC relay, absorb 100000 times continuously Module with diode effusion protection, short response time Module baud rate: 9600,8,1,0,0. The board function description:   Size: 45*28mm IN +,IN-: 5 v power input TX,RX and GND: a serial port debug pins Introduction: Onboard the ESP8266 WIFI module has three work modes: STA (client), AP (hot), the STA + Ap(hot +client), according to the workings of a module to the corresponding choice of WIFI module working mode.Module need before use serial debugging software and USB to TTL module send serial command was carried out on the WIFI module configuration (don't power outages after configuration is complete, as some of the parameters of WIFI module cannot be saved when the power is cut off), mobile phone and WIFI module after establishing a network connection can use the phone APP control relay. When cell phone equipped with WiFi module sends commands in the following order: (The default baud rate 115200) 1, AT+CWMODE=2, namely AP mode is selected; 2, AT+RST, reset; 3, AT+CIPMUX=1, open multiple connections; 4, AT+CIPSERVER=1,8080, configure the TCP server, set the port; 5, AT+CIOBAUD=9600 set the baud rate to 9600. (working in relays to control the baud rate 9600) 6, AT+CIFSR to view the AP mode IP address, such as: the APIP, "192.168.4.1"; 7, Cell phone WIFI signal connection name starts with AI-THINKER or ESP8266; 8, In the "TCP connection" address and port into the APP, such as 192.168.4.1 and 8080; 9, Click on the grey box relays can be controlled. 10,  Document: Applications:   1. Home Automation 2. Industrial IOT Applications 3. Lighting Controls Package included: 3 x ESP8266 5V WiFi Relay Module

Overview: Optical isolation USB to TTL Serial Module Equipped with CH340T USB to serial chip, achieved the power and TTL signal isolation, High-speed and stability, it could  avoid the damage of USB and computer blue screen or other issues while use the USB to TTL serial port module, due to improper operation or other external impact on the computer  , could improve the safety of debugging. The function and characteristics: 1. Onboard 500mA self-recovery fuse and 5V isolated power supply module to protect the computer from damage 2. Onboard stable CH340T USB to serial chip 3. Serial TTL level through the optocoupler isolation, fast (up to 921600bps), high reliability 4. Output TX RX end with protection diode function, can improve the impact resistance 5. Computer USB end and serial port output end realize complete electrical isolation 6. Output TTL level can be set to 3.3V / 5V 7. Serial output maximum output current of 150mA 8. The board size: 55x26mm Feature: - 3.3V, 5V: Output supply voltage and TTL level switching pin - VCC, GND: Power supply output pin - The TX, RX, GND and VCC pins of the serial port module are connected to the RX, TX, GND, and VCC pins of the user equipment. When the isolated serial port module VCC pin with a jumper cap 5V, the output 5V TTL level and power supply voltage; while VCC pin with 3.3V jumper cap, the output level of 3.3V TTL and power supply voltage. The following is an example of using the isolated serial interface module to debug the 3.3V ESP8266 module (With the jumper cap to isolate the serial port module VCC and 3.3V shorted, isolated serial port module TX, RX, GND, VCC respectively ESP8266 RX, TX, GND, VCC), as the picture shows: The background description of using Isolated serial port module: USB interface was already one of the interfaces that most commonly used by engineers to debug product development. USB interfaces are not only often used in contact with the human body, but also in many cases, it also supplies power to external devices. Strong external power, strong interference may cause damage to the computer USB port or motherboard, then electrical isolation becomes particularly important. LC optically isolated USB to TTL serial port module is suitable for the following occasions: 1. Electrical equipment which containing strong electricity USB devices with high power (such as high voltage, inverter, motor drive, etc.) connact to computer USB may burn out the USB interface, be sure to isolate to ensure that the computer USB port, motherboard and personal safety, can effectively avoid USB Mouth damage and personal injury. 2. Electrical equipment with Strong interference  Such as motor drives, inverters and other great interference itself, into the USB port may lead to computer crashes, blue screen, no response. You can isolate the USB interface through this device to avoid interference with the computer. 3. Noise-sensitive equipment The computer itself is a noise source, through the isolated USB port, you can avoid high-frequency interference to the computer transmission to sensitive devices, and thus better access to data, such as audio equipment, precision measuring equipment and medical equipment.  4. Ordinary electronic equipment For ordinary electronic equipment, through the isolation can effectively avoid operational errors caused by short-circuit damage to the computer USB port, blue screen and other issues, greatly improving the security of the operation. P.S: As there is a certain error of the isolated serial module 5V to 5V above the isolated power supply, so when the VCC through the jumper cap 5V pin and no load when the output power supply voltage will be about 5.4V, but do not worry, when connected to the user equipment, After the device output voltage will automatically drop to 5V or so. Package included: 1 x  High-speed Isolation USB To TTL Serial Module

10-in-1 UNO Module Kit Buzzer Terminal Block DS18B20 Digital Module For Arduino Note: This kit does not includes any instructions, please note about this before order. Package includes: 1 x Mega V4 expansion board (small) 1 x Arduino compatible 5V relay module 1 x Arduino compatible MQ2 smoke gas module 1 x Arduino compatible analog temperature module 1 x Arduino compatible DS18B20 digital module 1 x Arduino compatible LED lamp module 1 x Arduino compatible button module 1 x Arduino compatible buzzer module 1 x Arduinocompatible 2pin terminal block 1 x Sliding rheostat module  

MAX7219 Microcontroller 4-in-1 Display Dot Matrix Module For Arduino Specifications: A single module can drive a 8x8 dot matrix common cathode Working voltage: 5V Module size: 12.8 x 3.2 x 1.3 cm (L*W*H) With 64 fixing screw holes, hole diameter: 3mm Module with input and output interfaces, support for cascading multiple modules Wiring: 1. The left side of the module is the input port, and the right is the output port. 2. Control of a single module, the input port only need to receive CPU. 3. The more a module cascade and input end of the first module is connected with the CPU and input end of the input end of the output end is connected to the second module, output terminal of the second module connected with the three modules, and so on. For example: 51 SCM VCC→5V GND→GND DIN→P2.2 CS →P2.1 CLK→P2.0 Package included: 1 x MAX7219 Dot Matrix Module 1 x 5pin Dupont Cable

5pcs HC-05 Wireless Bluetooth Serial Module With Baseplate For Arduino Note: This module does not suitable for IOS system. Pin serial port descriptions: PIO8 connect LED, indicates the status of working, after powered the module flashing, different states in different flashing intervals. PIO9 connect LED, indicates successful connecting module, after successful mating bluetooth serial port, LED long lights. PIO11 state switch pin (high level) -> AT command response to the work state, low level or dangling -> Bluetooth regular work status. On module with a reset circuit, re-power to complete the reset. Main module setup steps: 1. PIO11 set high. 2. Power ON, the module into the AT command response status. 3. HyperTerminal or other serial tool, set the baud rate 38400, 8 data bits, 1 stop bit, no parity, no flow control. 4. Serial send characters "AT + ROLE = 1 r n", successful return "OK r n", which r n for carriage return. 5. PIO set low, re-power, module as the main module, automatic search from module to establish a connection. Feature: 6V - 4.5V power supply; Support connect Android phones with Bluetooth; The default baud rate: 9600 can be modified according to the data sheet; Package included: 5 x HC-05 Wireless Bluetooth Serial Module

Description: Working Voltage: 5V(DC) Static Current: Less than 2mA. Output Signal: Electric frequency signal, high level 5V, low level 0V. Sensor Angle: Not more than 15 degrees. Detection Distance: 2cm-450cm. High Precision: Up to 0.3cm Input Trigger Signal: 10us TTL impulse Echo Signal: output TTL PWL signal Mode of connection: VCC trig(T) echo(R) GND Use method: Supply module with 5V, the output will be 5V while obstacle in range, or 0V if not.The out pin of this module is used as a switching output when anti-theft module, and without the feet when ranging modules. Note: the module should be inserted in the circuit before been power, which avoid producing high level of misoperation;if not, then power again. Module Working Principle: 1. Adopt IO trigger through supplying at least 10us sequence of high level signal. 2. The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal. 3. If there is signals returning, through outputting high level and the time of high level continuing is the time of that from the ultrasonic transmitting to receiving. Test distance =(high level time * sound velocity (340M/S) / 2. Note: This module is not suitable to connect with electric power, if you need to connect this module with electronic power,then let the GND terminal of this module to be connected first,otherwise, it will affect the normal work of the module Package Included: 5 x HC-SR04 Ultrasonic Module Distance Measuring Transducer

Description: Working Voltage: 5V(DC) Static Current: Less than 2mA. Output Signal: Electric frequency signal, high level 5V, low level 0V. Sensor Angle: Not more than 15 degrees. Detection Distance: 2cm-450cm. High Precision: Up to 0.3cm Input Trigger Signal: 10us TTL impulse Echo Signal: output TTL PWL signal Mode of connection: VCC trig(T) echo(R) GND Use method: Supply module with 5V, the output will be 5V while obstacle in range, or 0V if not.The out pin of this module is used as a switching output when anti-theft module, and without the feet when ranging modules. Note: the module should be inserted in the circuit before been power, which avoid producing high level of misoperation;if not, then power again. Module Working Principle: 1. Adopt IO trigger through supplying at least 10us sequence of high level signal. 2. The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal. 3. If there is signals returning, through outputting high level and the time of high level continuing is the time of that from the ultrasonic transmitting to receiving. Test distance =(high level time * sound velocity (340M/S) / 2. Note: This module is not suitable to connect with electric power, if you need to connect this module with electronic power,then let the GND terminal of this module to be connected first,otherwise, it will affect the normal work of the module Package Included: 1 x HC-SR04 Ultrasonic Module Distance Measuring Transducer

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA Descriptions: Main chip: ISD1820 Size: 38.5 x 42.8mm Operating voltage: DC 3~5V Features: Easy to use 10 second voice recording and playback. High quality, natural voice restore. Can be used as a megaphone module. With loop play, jog play, single play function. SCM control. This module can directly drive 8 ohm 0.5W small speakers. Power supply: 3-5V, can be connected to the pin. Record and playback control mode: key control or SCM, control line IO has been led out. Key control recording and playback operation method: REC key: recording button, press and hold to record, release the button to stop recording; RLAYE key: trigger mode playback, click to play the current voice of the entire paragraph; PLAYL key: jog mode playback, press and hold to playback, release to stop playing; RPL jumper: loop play mode control, can be played circularly; FT jumper: through control, it allows the microphone voice directly to the speaker to playback. Package included: 1 x Voice module 1 x 0.5W 8R speaker 1 x XH2.54 cable ISD1820 3-5V Voice Module Recording And Playback Module SCM Control Loop / Jog / Single Play ISD1820 3-5V Voice Module Recording And Playback Module SCM Control Loop / Jog / Single Play ISD1820 3-5V Voice Module Recording And Playback Module SCM Control Loop / Jog / Single Play

OSC482 Series Function Upgrade Module L01 Logic Analyzer Module 4 Channels TTL Package weight: 0.04 kg The logic analysis module S01 functions as an oscilloscope OSC482 series host expansion module. Customers who purchase the oscilloscope OSC482 series need to extend the logic analyzer function. The product can be purchased with the corresponding functional features. They are standard modules. If the purchased host does not contain their corresponding characteristics, then these modules are optional logic analyzers with 4 channel inputs L0~L3. The input voltage between 2V and 3.3V is considered to be high, and the input voltage between 0.8V and 0V is considered low. Specification: Logic analyzer module 1 L01 4 channels, 3.3V TTL level, same performance as the host. Package includes: 1 X L01 Logic analyzer module (Suitable for OSC482 series) Related Links: OSC482F: OSC482M: OSC482L: OSC482X: OSC482S: Signal Generator (Upgrade accessories): OSC802: OSC2002L(OSC2002+Logic Analyzer): OSCA02: OSCA02L(OSCA02+Logic Analyzer): ps://www.Racer Gadgets.com/OSCA02LOSCA02Logic-Analyzer-35MHz-2-CH-Oscilloscope-100Ms-Sampling-Rate-Hand-held-Portable-USB-PC Click here for more deals OSC482 Series Function Upgrade Module L01 Logic Analyzer Module 4 Channels TTL OSC482 Series Function Upgrade Module L01 Logic Analyzer Module 4 Channels TTL

Soil Hygrometer Detection Module Soil Moisture Sensor For arduino Smart car is available now from our US and UK warehouse Free shipping to US and UK in 3-6 business days ship to Canada, Brazil in 7-10 days in US warehouse ship to European countries in 7-10 days in UK warehouse Description: Soil Hygrometer Humidity Detection Module Moisture Sensor For Arduino This is a summary of the soil moisture sensor can be used to detect moisture, when the soil is dry, the module outputs a high level, whereas output low. Using this sensor make an automatic watering system, so that your garden plants without people to manage. Operating voltage: 3.3V~5V. Adjustable sensitivity (shown in blue digital potentiometer adjustment) Dual output mode,analog output more accurate. A fixed bolt hole for easy installation. With power indicator (red) and digital switching output indicator (green). Having LM393 comparator chip, stable. Panel PCB Dimension: 3cm x 1.5cm. Soil Probe Dimension: 6cm x 2cm. Cable Length: 21cm. VCC: 3.3V-5V. GND: GND. DO: digital output interface(0 and 1). AO: analog output interface. Instructions for Use: 1. Soil moisture module is most sensitive to the ambient humidity is generally used to detect the moisture content of the soil. 2. Module to reach the threshold value is set in the soil moisture, DO port output high, when the the soil humidity exceeds a set threshold value, the module D0 output low. 3. The digital output D0 can be connected directly with the microcontroller to detect high and low by the microcontroller to detect soil moisture. 4. The digital outputs DO shop relay module can directly drive the buzzer module, which can form a soil moisture alarm equipment. 5. Analog output AO and AD module connected through the AD converter, you can get more precise values of soil moisture. Package Included: 1 x Soil moisture detector module 1 x Probe 1 x 2P Jumper Cable

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA Description: SOC characteristics: Built-in 160MHz MIPS RISC processor 512K SRAM Communication rate: 72Mbps (20MHz) Optimal balance & LLR quantification Wi-Fi features: Support 802.11 a/b/g/n, 2.4-2.5GHz, 4.9-5.85GHz 2.4GHz Rx sensitivity: -75dBm/11n HT20 MCS7, Tx Power: 21dBm 5GHz Rx sensitivity: -74dBm/11n HT20 MCS7, Tx Power: 16.5dBm Support Station, SoftAP mode Support Wi-Fi Direct (P2P) Supports CCMP (CBC-MAC, counter mode), TKIP (MIC, RC4), WAPI (SMS4), WEP (RC4), CRC P2P discovery, P2P GO mode/GC mode and P2P power management Seamless roaming support Support AT remote upgrade and cloud OTA upgrade Support Android and iOS device SmartConfig function Module peripheral: 2xUART 3xADC 1xHSPI 1xI2C 1xI2S 2xDMA 2xPWM Up to 23xGPIOs 2M bytes SPI Flash Operating temperature range: -30 ° C -85 ° C Module size: 18mm × 30mm Application scenario: Wireless image transmission Home automation Smart Home Mesh Network Baby monitor IP camera Sensor network Wearable electronics Security ID tag Wireless location awareness Wireless positioning system beacon Industrial wireless control Package Includes: 5 x DT-W5G1 2.4G 5G Dual Frequency Module 5pcs Probe Firmware DT-W5G1 5G WiFi Module 2.4g/5g Dual-band Module with Antenna Interface For Wireless Image Transmission 5pcs Probe Firmware DT-W5G1 5G WiFi Module 2.4g/5g Dual-band Module with Antenna Interface For Wireless Image Transmission 5pcs Probe Firmware DT-W5G1 5G WiFi Module 2.4g/5g Dual-band Module with Antenna Interface For Wireless Image Transmission

5Pcs MAX7219 Dot Matrix Module MCU LED Control Module Kit For Arduino Specifications: A single module can drive an 8 x 8 common cathode lattice Operating voltage: 5V Size: 5 x 3.2 x 1.5 cm (L x W x H) LED color: Red With four screws hole, aperture 3mm With input and output interfaces, supports multiple modules cascade Wiring instructions: 1. The module left side as an input port and the output port on the right 2. To control a single module, just connect the input port to the CPU 3. When cascading multiple modules, the input port of the first module connect to the CPU, the output port connect to the input port of the second one, and so on. In the case of 51 MCU: VCC → 5V GND → GND DIN → P22 CS → P21 CLK → P20 Note: 1. VCC and GND is not reversed, it would burn the chip! 2. When the 51 microcontroller P0 port controlling, must be connected to the pull-up resistor, it is recommended that the resistance of 4.7K--10K 3. Please install lattice into the round hole first, and then insert the round hole to PCB board and weld. Face the side of lattice with words, from left to right pin order is 123456. PCB board 1st pin is square pad! 4. Electrolytic capacitors long-pin as positive, short-pin as negative; ceramic capacitor hsa no positive and negative points Package included: 5 x LED module 5 x Dupont line (5P-20cm)

5Pcs Socket Adapter Module Board For 8 Pin NRF24L01+ Wireless Transceiver Module Specification: Voltage: 3.3V It's for 8 Pin NRF24L01+ Module A simple socket board which is for NRF24L01 wireless module On-board AMS1117-3.3 chip It can be used with NRF24L01 wireless module Dimension: 26 x 19 x 12mm Note: Wireless module operating voltage is generally 3.3V, while the ordinary 51 microcontroller 5V, this module is wireless module with 51 single system board used in conjunction. Data Link: https://pan.baidu.com/s/1o6ug0yu Package included: 5 x Wireless Socket Adapter Module Board

Jog Type Touch Sensor Module Capacitive Touch Switch Module For Arduino Description: This is jog type capacitive touch switch sensor module based on a touch detection IC TTP223B. Normally, the output is low level(at mode of low power consumption). When the finger touch the corresponding location, output will be high(at quick speed mode). When the module do not be touched for 12 seconds, the mode would switch to low-power mode. It can be installed in the module, such as plastic, glass, non-metallic material surface. But not cover thin sheets(metal) on the surface of the module. Just touch the correct position, it can be hidden in walls, desktops and other parts to be buttons. Allows you to remove the troubles of conventional push-type buttons. Feature: Low power consumption Can replace the traditional key With four M2 screw holes, easy for operation Specification: Operating voltage: DC 2.0V ~ 5.5V VOH: VCC 0.8V VOL: VCC 0.3V Sink current: 8mA @ VCC = 3V, VOL = 0.6V Source current: -4mA @ VCC = 3V, VOH = 2.4V Response time: 220ms (at mode of low power consumption) and 60ms (at quick speed mode) Size: 24 x 24 x 7.2mm Package included: 1 x Capacitive jpg type touch sensor module

3Pcs MAX7219 Dot Matrix Module MCU LED Control Module Kit For Arduino Specifications: A single module can drive an 8 x 8 common cathode lattice Operating voltage: 5V Size: 5 x 3.2 x 1.5 cm (L x W x H) LED color: Red With four screws hole, aperture 3mm With input and output interfaces, supports multiple modules cascade Wiring instructions: 1. The module left side as an input port and the output port on the right 2. To control a single module, just connect the input port to the CPU 3. When cascading multiple modules, the input port of the first module connect to the CPU, the output port connect to the input port of the second one, and so on. In the case of 51 MCU: VCC → 5V GND → GND DIN → P22 CS → P21 CLK → P20 Note: 1. VCC and GND is not reversed, it would burn the chip! 2. When the 51 microcontroller P0 port controlling, must be connected to the pull-up resistor, it is recommended that the resistance of 4.7K--10K 3. Please install lattice into the round hole first, and then insert the round hole to PCB board and weld. Face the side of lattice with words, from left to right pin order is 123456. PCB board 1st pin is square pad! 4. Electrolytic capacitors long-pin as positive, short-pin as negative; ceramic capacitor hsa no positive and negative points Package included: 3 x LED module 3 x Dupont line (5P-20cm)

Description: STX882 ASK Wireless Remote Control Transmitter Module: STX882 is a ASK transmitter module with small size, ultra high power, low harmonics. With high stability, it can be achieved at 50mW power when the voltage is 3.6V, it is the maximum transmitter power module under the the same voltage in the market. Data port of the module can be connected to the microcontroller directly, make wireless product development and production more convenient. SRX882 ASK ASK Wireless Remote Control Superheterodyne Receiver Module: SRX882 is a superheterodyne receiver with micro power and strong driving force, is supplementary STX882 / STX888 module. Data port of the module can be connected to the microcontroller directly, make wireless product development and production more convenient. Module Function Demonstration DEMO Board: Package included: 3 x 433MHz 100m transceiver module kit (3pcs ASK transmitter STX882 + 3pcs ASK receiver SRX882 + 6pcs copper spring antenna)

Summarize:   LC boost module MC34063A_BOOST are based on a small chip MC34063A booster module, low voltage can be up to a certain range of high voltage, which can adjust output voltage through the potentiometer.Can be used in the places where need to improve the voltage.   Feature:   (1) Low input voltage, high output voltage.Realize the booster function. (2) The output voltage is adjustable. (3)The module size is small.   Technical parameters: The input voltage range: 3.6 V - 30 V. Range of output voltage, output voltage of 3.8 V to 36 V output voltage regulator features: load regulation is less than 5%. Output current.This module IC internal switch tube is 1.5 A, but for reasons of safety and calorific value, recommend this module within the load on the power consumption is 0.8 W.When the output is 5 v, load within 160 ma.Note: the higher the output of the negative pressure, load ability is relative decline.  VIN: low input voltage. GND: public land. OUT: output increase of voltage. Instructions: the working voltage VCC &gnd, not reverse connection, in order to avoid damage to the board and components. By adjusting the potentiometer to control the output voltage. Need to input and output feet by one greater than 100UF electrolytic capacitors to the ground.The input and output filter capacitor is the positive input feet, negative ground. Pressure must be greater than the input and output voltage of capacitor. Package included: 1 x MC34063A Boost Module Battery Booster Module

Description: STX882 ASK Wireless Remote Control Transmitter Module: STX882 is a ASK transmitter module with small size, ultra high power, low harmonics. With high stability, it can be achieved at 50mW power when the voltage is 3.6V, it is the maximum transmitter power module under the the same voltage in the market. Data port of the module can be connected to the microcontroller directly, make wireless product development and production more convenient. SRX882 ASK ASK Wireless Remote Control Superheterodyne Receiver Module: SRX882 is a superheterodyne receiver with micro power and strong driving force, is supplementary STX882 / STX888 module. Data port of the module can be connected to the microcontroller directly, make wireless product development and production more convenient. Module Function Demonstration DEMO Board: Package included: 5 x 433MHz 100m transceiver module kit (5pcs ASK transmitter STX882 + 5pcs ASK receiver SRX882 + 10pcs copper spring antenna)

Description: The IIC 2004 LCD display module is a 4 line 20 character LCD module not only set the contrast control knob selector switch also has a backlight and IIC communication interface. For Arduino beginners, not for the cumbersome and complex LCD driver circuit connection and a headache, the real significance of this LCD module will simplify the circuit, this module directly into the Arduino Sensor Shield V5.0 sensor expansion board IIC device interface can, GM 4P sensor connection cable, programmed through the Arduino controller, you can easily identify the slogan, sensor data records. Specification: Display: yellow green Supply voltage: 5V Interface: I2C I2C address: 0x27 or 0x3F random delivery Pin definition: GND, VCC, SDA, SCL Contrast adjust: potentiometer Display format: 20 Characters x 4 lines Adjustable backlight The module can be easily interfaced with a MCU Fully assembled and tested serial LCD 20 x 4 module The module is a low-power consumption character LCD module with a built-in controller It is fantastic for Arduino based project Size: 9.8 x 6 x 1.2mm Package included: 3 x 2004 LCD display module