ESP32 and OLED display example

This example uses an OLED display these typically come in a couple of different sizes 128x32 and 128x64, this particular example will use the...

ESP32 and Soil Moisture Sensor example

In this article, we are going to interface a Soil moisture sensor with an ESP8266. This sensor measures the volumetric content of water inside...

Random colours on the WS2812b led ring

This was a WS2812b led ring that I purchased for low cost. There are 12 LEDs in total on this and once you solder...

ESP32 and DHT11 sensor example

DHT11 digital temperature and humidity sensor is a composite Sensor contains a calibrated digital signal output of the temperature and humidity. Application of a...

ESP32 and Si7021 temperature sensor example

The  Si7021  I2C Humidity  and  Temperature  Sensor  is  a  monolithic  CMOS  IC integrating   humidity   and   temperature   sensor   elements,  ...

ESP32 and BMP280 sensor example

BMP280 is an absolute barometric pressure sensor especially designed for mobile applications. The sensor module is housed in an extremely compact package. Its small...

ESP32 and I2C LCD example

In this example we will interface to an I2C LCD using our ESP32. Now these I2C LCD's consist of 2 parts usually an HD44780 16×2...

ESP32 and SHT21 humidity and temperature sensor example

SHT21, the new humidity and temperature sensor of Sensirion is about to set new standards in terms of size and intelligence: Embedded in a...

LIS3DSH accelerometer sensor and an ESP32

In this example we connect a LIS3DSH sensor to an ESP32. The LIS3DSH is an ultra-low-power high-performance three-axis linear accelerometer belonging to the “nano” family with...

ESP32 and SHT31 sensor example

SHT31 is the next generation of Sensirion’s temperature and humidity sensors. It builds on a new CMOSens® sensor chip that is at the heart of...

ESP32 and MAX30100 heart-rate monitor sensor

The MAX30100 is an integrated pulse oximetry and heart-rate monitor sensor solution. It combines two LEDs, a photodetector, optimized optics, and low-noise analog signal...

BPI:bit and on board light-dependent resistors example

In this article we look at the 2 LDRs  which are fitted to the BPI:bit If you do not know what an LDR is ,...