
Best Answer EddieGarmon, 27 May 2015 - 02:00 PM
Tall plastic tube is a nylon spacer .5 in long, .188 in outer diameter, 0.117 in inner diameter, bought from a local True Value Hardware store.
I also have 3 @ 0.25 in OD, 0.115 ID underneath.
I believe the hole position is an artifact of arduino design before I2C had independent pins near there.
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