ESP32 and LDR example

In this example we connect a photoresistor to a ESP32 Lolin32, the value read from the photoresistor corresponds to the amount of light present....

Subscribing to MQTT topic using an ESP32

In this example we will subscribe to an MQTT broker and topic. Again we use the same CloudMQtt, arduino libraries and MQTTlens chrome app that...

ESP32 and BMP085 example

This sensor is obsolete now and has been replaced by newer ones but if you still have them lying about then this is how...

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...

ESP32 and 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. A...

ESP32 and GA1A12S202 light sensor example

In this example we will connect a GA1A12S202 Log-Scale Analog Light Sensor to an ESP32 LOLIN32 module from Wemos. The features of this sensor are...

DHT12 humidity temperature sensor and ESP32 example

DHT12 sensor and ESP32 example The DHt12 is an upgraded version of the classic DHT11 humidity temperature sensor, it is fully downward compatible, more precise...

ESP32 and microSD card example

In this example we connect an SD card to our ESP32, we will log analog readings to a file on the SD card. Here is...

ESP32 and SHT20 temperature sensor example

In this example we will connect a SHT20 temperature sensor to an ESP32. Lets look at the SHT20 sensor The SHT20 humidity and temperature sensor of...

ESP32 and WS2812b RGB led example

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

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,...

An ESP32 and HMC5883L sensor example

The Honeywell HMC5883L is a surface-mount, multi-chip module designed for low-field magnetic sensing with a digital interface for applications such as lowcost compassing and...