This is another of those fun projects done with friends.

A friend came into possession of a box full large (200mm) 4 digit 7-segment displays with a PIC processor to drive them.  After some discussion we decided to make wall thermometers out of them.  He attached a button and a temperature sensor and I threw together some code and we had something to display current, maximum, minimum and average temperature which could be seen anywhere in the room.  Christmas presents sorted!

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