Qwiic GPIO expander
This is a PCF8574 based GPIO expander with Qwiic connectors. Each GPIO and the INT signal go to a header pin and have and LED that indicates when the signal is low. The signals go to a dual row header with one row grounded so that any signal can be shorted with a jumper. There is also an LED to indicate when the board is powered.
This design is released under CC0 1.0 Universal license.
Follow this project on Hackaday
You can order bare boards from OSH Park
