ESP32 and FreeRTOS example create a task

In this example, I will show you how to apply FreeRTOS in Arduino ESP32. Arduino ESP32 is built over FreeRTOS and actually the main...

ESP32 and LM35 temperature sensor

In this example we will connect an LM35 temperature sensor to our ESP32 module The LM35 series are precision integrated-circuit temperature sensors, whose output voltage...

ESP32 and GY-21P readings on a web page

In this example we connect a GY-21P sensor to an ESP32 and then we will display the readings on a webpage Lets recap the GY-21P...

LPS22HB absolute pressure sensor and ESP32 example

In this article we look at a pressure sensor - this time its the LPS22HB and we will see how we can get this...

ESP32 and TM1637 7 segment display example

A common display module that you can buy on the internet contain the Tm1638 driver chip, I was interested in this one which is the...

B4R and ESP32 MCP9808 digital temperature sensor example

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.) accuracy. The...

ESP32 and GY-21P module

The GY-21P is an interesting module in that it combines a BMP280 sensor and an SI7021 sensor. The on-board BMP280+SI7021 sensor measures atmospheric pressure...

ESP32 and Si4703 FM radio example

The Si4702/03 FM radio receiver family increases the ease and attractiveness of adding FM radio reception to mobile devices through small size and board...

ESP32 and 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...

ESP32 Network Time Protocol example

Sometimes it is useful in any logging or displaying data to have a reasonably accurate time, by adding the NTPClient library you can do...

MH ET LIVE ESP32 MINI KIT and Wemos DHT11 shield example

As promised we said we would try out some of the Wemos Mini shields with the MH ET LIVE ESP32 MINI KIT.  Here is...

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...