This board is an inexpensive Grove I2C controlled 8 pin GPIO Extender Board for the Raspberry Pi, Arduino and the ESP8266. It has 8 Grove Digital Connectors and 3 Grove I2C connectors (which form an I2C Hub). People are always running out of GPIOs on the Raspberry Pi. This board connects to the I2C bus on the Raspberry Pi and adds 8 additional 3.3V GPIOs to the Pi. You can also make them 5V GPIO pins if you wish.
- Wants a clean way of adding more GPIO ports (Digital Grove ports) and this is the way to do it.