Imported from GitHub: gundy/aa_pihat · commit 0db2be5 · license GPL-3.0

Description

PiHat for interfacing with AA control box

README

AA Boards and Tools

This repository contains some schematics and board designs that have been useful when trying to understand the communications used by the AA system.

• An interceptor board that sits between the tablet and CB and allows the RS485 lines to be read.
• A 'hat' for a Raspberry Pi that uses the 14v supply to power the Pi, and provides circuitry to allow the PI's built-in serial port to communicate with the RS485 data bus.

As always, YMMV. Verify designs before using them. Don't mess with stuff you can't afford to break.