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...

Wemos Mini and a PCF8574

The PCF8574 is an 8 bits I/O port expander that uses the I2C protocol. Using this IC, you can use only the SDA and...

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...

DHT11 sensor data to Thingspeak using a Wemos D1

In this example we will connect a DHT11 sensor to our Wemos D1, we will then send the temperature and humidity values to thingspeak. DHT11...

Wemos and MAX44009 ambient light sensor example

The MAX44009 ambient light sensor features an I²C digital output that is ideal for a number of portable applications such as smartphones, notebooks, and...

A basic NodeMCU and Simba OS example

Ok, I had heard of Simba OS but hadn't managed to try it, as quoted "2Simba is an RTOS and build framework. It aims...

Wemos mini and OLED shield bitcoin ticker

In this example we will display the price in USD of 1 bitcoin, the data is taken from coindesk's API and displayed on an...

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 Mini and ISL29125 RGB color light sensor

On this page we take a look at the ISL29125 RED, GREEN and BLUE color light sensor The ISL29125 is a low power, high sensitivity, RED, GREEN...

Wemos and reed switch example

The reed switch is an electrical switch operated by an applied magnetic field. It consists of a pair of contacts on ferrous metal reeds...

Using a STTS22H temperature sensor with an ESP8266

In this article we look at a temperature sensor, the STTS22H sensor from ST and connect it to an ESP8266 board Sensor Information The STTS22H is...

ESP8266 and GY-21P module example

This module  combines a BMP280 sensor and an SI7021 sensor. The on-board BMP280+SI7021 sensor measures atmospheric pressure from 30kPa to 110kPa as well as...

ESP8266 and BMA400 acceleration sensor example

In this article we look at another acceleration sensor - this time its the BMA400 Lets take a look at the sensor and its features Description The...

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...

IR Line tracking sensor example

This is another example using a sensor from the 37 sensor kit, this time we use the one called the KY-033 Hunt sensor module,...

The Wemos IR controller shield

In this small article we take a look at the IR controller shield, this is a shield which can act as an IR receiver...