Tested on:RPi3; RPi0
Prerequisites:Raspberry Pi with Raspbian Jessie and internet connection (see steps 1-7 in the Introduction)
Hardware:pHAT Stack
2x20 male or female pin headers as needed
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Combining HATs with the pHAT Stack

HATs (Hardware Attached on Top) allow quickly adding capabilities to a Raspberry Pi by simply plugging them on. This becomes tedious if it’s more than one HAT that should be added. Luckily, the pHAT Stack by Pimoroni is there and gives a way for combining many HATs easily.

pHAT Stack

pHAT Stack

My build has four male header rows for attaching HATs on top and a single female header row pointing down for a Raspberry Pi 3.

Combining HATs
The plethora of HATs available makes keeping track on compatilibty difficult. Luckily, the wonderful website Pinout.xyz gives a graphic representation of HAT pin requirements and allows checking for compability before assembly:

Pinout.xyz HAT pin requirements

Pinout.xyz HAT pin requirements

Usage example
The pHAT Stack allowed extending my project RPi-Band comfortably with a pHAT DAC for better audio quality:

RPi-Band with pHAT Stack and Arduino theremin

RPi-Band with pHAT Stack and Arduino theremin

Links
Pimoroni: https://shop.pimoroni.com
Combining HATs with Pinout.xyz: http://www.knight-of-pi.orgwww.pinout.xyz
Tutorial RPi-Band: http://www.knight-of-pi.org/amazing-sound-for-the-raspberry-pi-with-the-phat-dac/

Knight of Pi

Johannes Bergs aka Knight of Pi. Diploma in Bioinformatics, some Webdesign and Python coding then. Living in the beautiful city of Vienna.

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