An Arduino library for I²C GPIO-expander with sample code. To operate the port for input, the IO pins can be configured bit by bit. The config bit for output is 0 and input is 1. When the bit 0 to 4 ...

I am trying to compile an simple test sketch for the Adafruit SSD1306 library for an ESP32C3 board configuration. I am using PlatformIO to pull the latest PlatformIO core version, then change up some ...

Charlieplexing is a technique of controlling many LEDs using a few I/O pins. Charlieplexing is same as multiplexing, but it uses the tri-state logic (high, low input) to reduce the number of pins ...

GPIOViewer is an open-source Arduino library allowing users to monitor the GPIO pins status of their ESP32 board in real-time in a web browser for troubleshooting or fun. It’s different than the Wokwi ...

The Maker Faire 2019 is now taking place in San Mateo, California, United States, and Arduino has made an habit of announcing new products during the events. This year is no different as the company ...