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Thanks Ken.
It all works... Tested the board under load for about an hour this morning with everything running and replaced the coil connecting digital and analog ground with a bigger version because the little one fried. Now to fit it to the case and test the camera power.
A couple more changes to the board. The TEC needs multiple pathways for the supply to keep the board temperature down. Added a couple of wires to split the current. The air temp sensor is heating through its legs because the board is getting warm and will be located away from any heat sources.
At some stage I will update the board and build a new version with changes.
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