renniSaint
New Member
- Joined
- Apr 16, 2017
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Hi All,
I bought three STCs from the link on the github site a few months back. Successfully flashed them, and built them into project boxes. I then got the bright idea to run some USB fans in my ferm chambers and thought I could just run them off the 5v take offs on the board.
I hooked the first unit up and everything went well. Fans ran, several runs without load (just multimeter) showed that both heat and cool ran as they should to achieve a given temperature.
I plugged it in and started a beer fermenting, the next day, I checked on it and it was nowhere near correct! Multimeter showed no power. I slapped the project box in frustration and Bam! Power.
Huh
Messed with wiring, checked resistance across my solders. No problems. Tried changing the temp so the heat would run instead of the fridge. Same problem!
Switched to another unit. Same problem.
I am so confused. If you unplug the unit or give it a slap it will switch on, but after that it won't close the circuit.
Is it a bad batch of units? Or am I leeching too much power with the fans and messing it up? Why does it work when there is no load on the AC side?
Any thoughts anyone? I'd be incredibly appreciative!
Thanks!
I bought three STCs from the link on the github site a few months back. Successfully flashed them, and built them into project boxes. I then got the bright idea to run some USB fans in my ferm chambers and thought I could just run them off the 5v take offs on the board.
I hooked the first unit up and everything went well. Fans ran, several runs without load (just multimeter) showed that both heat and cool ran as they should to achieve a given temperature.
I plugged it in and started a beer fermenting, the next day, I checked on it and it was nowhere near correct! Multimeter showed no power. I slapped the project box in frustration and Bam! Power.
Huh
Messed with wiring, checked resistance across my solders. No problems. Tried changing the temp so the heat would run instead of the fridge. Same problem!
Switched to another unit. Same problem.
I am so confused. If you unplug the unit or give it a slap it will switch on, but after that it won't close the circuit.
Is it a bad batch of units? Or am I leeching too much power with the fans and messing it up? Why does it work when there is no load on the AC side?
Any thoughts anyone? I'd be incredibly appreciative!
Thanks!