nodemcu with ICStation 3v relay
thingiverse
A remix of https://www.thingiverse.com/thing:2408514. I have ICStation relays, which are bigger than the seems-to-be-standard blue 5V relay I'm seeing so often in thingiverse. I also modified the locking mechanism to take screws (M2.5 5mm) instead of those poles. For the screws, I recommend, after printing, to drive the screws in first. They should be able to make their own treads on PLA. Afterwards screwing the nodemcu and relay in should be simple. Print right-side up in order to minimize support for the base.
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