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MQ3 Gas Sensor example

The MQ3 Gas Sensor module is useful for gas leakage detection (in home and industry). It is suitable for detecting Alcohol, Benzine, CH4, Hexane, LPG,...

APDS-9930 ambient light and proximity sensor example

The APDS-9930 provides digital ambient light sensing (ALS), IR LED and a complete proximity detection system in a single 8 pin package. The proximity...

MCP4725 Digital-to-Analog Converter example

MCP4725 is a single channel, 12-bit, voltage output Digital-to-Analog Converter with integrated EEPROM and an I2C Compatible Serial Interface. Again the easiest way to interface...

BH1750FVI Ambient Light Sensor example

The BH1750FVI is an digital Ambient Light Sensor IC for I2C bus interface. This IC is the most suitable to obtain the ambient light...

Wemos Mini WS2812b example

The WS2812 family is a intelligent control LED light source that the control circuit and RGB chip are integrated in a package of 5050...

Max7219 8×8 LED matrix example

The MAX7219/MAX7221 are compact, serial input/output common-cathode display drivers that interface microprocessors (µPs) to 7-segment numeric LED displays of up to 8 digits, bar-graph...

Wemos and Max6675 example

In this example we take a look at the MAX6675 Cold-Junction-Compensated K-Thermocouple-to-Digital Converter The MAX6675 performs cold-junction compensation and digitizes the signal from a type-K thermocouple....

Wemos and MCP3008 example

The Microchip MCP3008 ADC is a 10-bit Analog to Digital (A/D) converter with on-board sample and hold circuitry. Communication with the device is accomplished using...

Using a 74HC595 shift register with the Wemos

Sometimes in your projects you simply do not have enough I/O lines available, take for example a lot of the multiple LED examples, these...

GA1A12S202 light sensor example

In this example we will connect a GA1A12S202 Log-Scale Analog Light Sensor to an Arduino. The features of this sensor are as follows Output voltage increases...

MLX90614 infrared thermometer example

The MLX90614 is a non-contact infrared thermometer with a measurement range from -70 to +380 degree Celsius. Just connect the four leads to your...

Wemos MCP9808 digital temperature sensor example

ESP8266 and MCP9808 digital temperature sensor example The MCP9808 digital temperature sensor converts temperatures between -20°C and +100°C to a digital word with ±0.5°C (max.)...

Wemos HDC1008 sensor example

The HDC1000 is a digital humidity sensor with integrated temperature sensor that provides excellent measurement accuracy at very low power. The device measures humidity...

Wemos Mini and PIR sensor example

In this example we connect a PIR module to a Wemos Mini. A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared...

Wemos Mini and HC-SR04 ultrasonic sensor

The HC-SR04 ultrasonic sensor uses sonar to determine distance to an object like bats or dolphins do. Ultrasonic ranging module HC-SR04 provides 2cm - 400cm...

Wemos mini bmp180 sensor example

This bmp180 from Bosch is the best low-cost sensing solution for measuring barometric pressure and temperature. The sensor is soldered onto a PCB with...