Pi to servo connection

servo

Connecting the Pi to the board is easy. Just follow the diagram.

The difficult part is… enabling the I2C communication channel

One important input pin is labeled “OE.” This is an active-low “output enable” pin. The servos will only be enabled when this pin is held low. It can be connected directly to ground, or driven from another of the Pi’s IO pins.

It also varies with what board you are using.