Difference between revisions of "Change: Interface PCB"

Revision as of 02:50, 14 December 2015

Dev Kit PCB installed on a Pi 2.

A Printed Circuit Board (PCB) has been designed and manufactured. This is an interim solution - a step towards the goal of a complete turnkey system.

The goals were to

Split this board in two, Board A and Board B.

Board A 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. It will connect to Board A by directly plugging into a header on Board A or connect via a ribbon cable.

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 [[File:P1010016c.jpg|thumb|400px|Dev Kit PCB installed on a Pi 2.]]
 ==Background==
-A Printed Circuit Board (PCB) has been designed and manufactured.  The goals were to
+A Printed Circuit Board (PCB) has been designed and manufactured. This is an interim solution - a step towards the goal of a complete turnkey system.
-#make it quicker and easier to build a system and to make it more reliable,
+*All sensor plug in.
-#to establish a relationship with a board house and
+*12 VDC power supply with battery voltage monitoring
-#to test the footprint of the RJ connectors and mating with the Pi
-#to select an opensource pcb layout package and learn how to use it.
-This is an interim solution - a step towards the goal of a complete turnkey system.
+The goals were to
-*All sensor plug in.
+#make it quicker and easier to build a system and to make it more reliable.
-*12 VDC power supply with battery voltage monitoring
+#to establish a relationship with a board house.
+#to select an open source pcb layout package and learn how to use it.
+#to test the footprint of the RJ connectors and mating with the Pi.
 ==Problems==