Change: Interface PCB

Dev Kit PCB installed on a Pi 2.

Background

A Printed Circuit Board (PCB) has been designed and manufactured. The goals were to make it quicker and easier to build a system and to make it more reliable, to establish a relationship with a board house and to test the layout of the RJ connectors and mating with the Pi. This is an interim solution - a step towards the goal of a complete turnkey system.

• All sensor plug in.
• 12 VDC power supply with battery voltage monitoring

Problems

ADC is only one channel. No RTC Board does not meet Pi HAT spec

Proposed change

Split this board in two.

• One board will meet the Pi HAT specifications and contain:

1. at least one 4 channel ADC so each load cell will be individually measured instead of being summed.
2. Real Time Clock with battery backup.
3. Configuration ROM

• One board will have all the connectors installed in a bulkhead configuration.