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Discussion Starter · #1 ·
It seems like every year that I have to find a replacement fog timer for one of the 3 foggers I am running, and every year I say that I should make my own with more capability for cheaper than the ones running $20-30.

I finally got motivated enough to make my first one, with the intention that two more will follow.

I used an Arduino Nano, a small OLED display, two switches, a single relay board, and a cable from a manual fogger remote. I'm pretty happy with the result: a timer with manual control, 10 millisecond resolution for the on time, 100 millisecond resolution for the off time, a count down until next activation, and indication when the relay is active. I estimate I probably spent $11-12 in materials, coated everything for better environmental protection, and will be able to readily replace parts as needed in the future.

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