User Manual

Stacking HATs

Even though HATs are not intended to be stacked, you can stack up to 62 HATs and not have an address collision, for

up to 992 PWM outputs! You'll still need to provide power and write code for all those outputs but they can all share

the same SDA/SCL pins no problem.

You will need to have installed stacking headers & right angle 3x4 connections for it to physically connect.

Extra Parts

If you want to stack HATs on top of this one, make sure you pick up a HAT-stacking header (https://adafru.it/ejT) and

solder them instead of the plain 2x20 header that comes in the kit