ESP32 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...

ESP32 and RFID-RC522 module example

In this example we will connect an RFID-RC522 module and connect to an ESP32 Wemos LOLIN32 The microcontroller and card reader uses SPI for communication...

Publishing messages to MQTT topic using an ESP32

In this example we will connect to an MQTT topic, I used a Wemos Lolin32 - you can use any ESP32 development board We used...

ESP32 and PCF8563 RTC module example

The PCF8563 is a CMOS Real-Time Clock (RTC) and calendar optimized for low power consumption. A programmable clock output, interrupt output, and voltage-low detector...
ESP32 and AHT20

AHT20 Integrated temperature and humidity Sensor and ESP32 board example

Another day another sensor hits the workshop. In this example we connect a AHT20 Integrated temperature and humidity Sensor to an ESP32 First lets look at...

ESP32 and TCS34725 Color Sensor

The TCS3472 device provides a digital return of red, green, blue (RGB), and clear light sensing values. An IR blocking filter, integrated on-chip and...

ESP32 and RGB led example

In this example we will connect an RGB led to our Wemos MIni, lets look at RGB leds first RGB LEDs consist of one red,...

MH ET LIVE ESP32 MINI KIT and Matrix LED shield example

A new shield for the Wemos Mini came my way recently, this is called the MATRIX LED Shield - You can find out more...

ADS1115 analog-to-digital converter and ESP32

The ADS1115 device (ADS111x) is a precision, low-power, 16-bit, I2C-compatible, analog-to-digital converters (ADCs) offered in an ultra-small, leadless, X2QFN-10 package, and a VSSOP-10 package....

enviro:bit TCS3472 sensor and bpi:bit Arduino code example

In this example we look at the enviro:bit which is an add on from pimoroni which has a BME280 temperature, pressure, and humidity sensor...

Interfacing an AD keypad module to your ESP32

I purchased this module as part of a microcontroller kit, its an interesting little module as it has 16 buttons but with only 1 I/O...

ESP32 and 4067 led example

The 4067 was one of the IC's that I wanted to connect up to various microcontrollers as it looke dextremely useful, here is a quick...