Datasheet
This pHAT adds the capability to control 16 Servos with perfect timing.
It can also do PWM up to 1.6 KHz with 12 bit precision, all completely
free-running.
For use with Raspberry Pi Model Zero, A+, B+, Pi 2 or Pi 3 (any Pi with
2x20 header). This bonnet will not fit on an original Raspberry Pi with
2x13 pin header.
The Adafruit 16-Channel 12-bit PWM/Servo Bonnet will drive up to 16
servos or PWM outputs over I2C with only 2 pins. The on-board PWM
controller will drive all 16 channels simultaneously with no additional
Raspberry Pi processing overhead. What's more, you can stack up to 62
of them to control up to 992 servos - all with the same 2 pins!


