Thus, they entered a heart rate sensor to our 2025 One Hertz Challenge! The build is based around a Wemos D1 mini, a ESP8266 development board.

Espressif has many different types of ESP32 devices, and while "ESP32" is used as a general expression to refer to the line ...

Learn how to interface ESP32 thermal printer with complete tutorial. Includes PNP-500 wiring, Arduino code, circuit diagrams, and projects for receipt printing, barcodes, and QR codes. Perfect for ...

AM232X Arduino library for AM2320 AM2321 and AM2322 I2C temperature and humidity sensor.