Difference between revisions of "Change: Interface PCB"
(→Proposed change) |
(→Proposed change) |
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Split this board in two, Board A and Board B. | Split this board in two, Board A and Board B. | ||
| − | *Board will | + | *Board will be a general purpose interface board that meets the Pi HAT specifications and contains: |
#at least one 4 channel ADC so each load cell will be individually measured instead of being summed. | #at least one 4 channel ADC so each load cell will be individually measured instead of being summed. | ||
#Real Time Clock with battery backup. | #Real Time Clock with battery backup. | ||
#Configuration ROM | #Configuration ROM | ||
| + | #Power supply | ||
*Board B will have all the connectors installed in a bulkhead configuration. | *Board B will have all the connectors installed in a bulkhead configuration. | ||
Revision as of 02:50, 8 December 2015
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 footprint of the RJ connectors and mating with the Pi
- to select a pcb layout package.
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 Real Time Clock (RTC).
- Board does not meet Pi HAT specification.
- Board is not general purpose but limited to our use.
Proposed change
Split this board in two, Board A and Board B.
- Board will be a general purpose interface board that meets the Pi HAT specifications and contains:
- at least one 4 channel ADC so each load cell will be individually measured instead of being summed.
- Real Time Clock with battery backup.
- Configuration ROM
- Power supply
- Board B will have all the connectors installed in a bulkhead configuration.
