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Does this exist? (12v to PWM control of 2 USB dew heaters)
Hi all,
I had the controller on my USB-powered (5v/2.4A) dew heater decide to self-immolate last night.
I've been looking around and all I can find are dew heater controllers that drive 12v heater straps. (I did find the Jaycar project but it doesn't look to provide enough current to drive 2 straps, and there were comments about the code for the Arduino being unreliable. I also saw ChrisV's project here, but that drives 12v heater straps.)
So I'm asking here if anyone knows of a controller that can take a 12v input and has some form of temperature / power output control to feed 2 USB dew straps. Ideally, it would be small enough that it fits somewhere on the mount, and also has some form of smarts (ie, change power output depending on environmental temperature and humidity.)
Many thanks,
V
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