An ESP8266 program that sent a long I2C Write string to a slave device no longer worked when ported to ESP32. An oscilloscope trace showed SCL was only going to mid level when the slave device was ...

With esp32 ,after 2 month of work without problem, my lcd 16x2 with PCF8574 (external component) have issue that I don't understand. The inizialization don't start ...

The I2C bus is a set of hardware and software rules that allows communication between multiple devices over a shared, two-wire interface. In operation the bus uses one line (SDA) for data and the ...

If you’ve ever debugged a misbehaving I2C circuit, you probably know how frustrating it can be. Thankfully [Jim] over at Hackaday.io, has a proto-boardable circuit that can help! Inter-integrated ...