11-21-2016, 05:39 AM
ahhh, turned out that while partly firmware related (this decreased the temperature by 1 degree)
there is also a hardware part - somehow the USB Power supplies do something with the USB lines, so that the USB2Serial module does not go to sleep, and consumes 12ma constantly. I had tested with a USB Battery and with 5V directly.
And this 12ma inclrease the temperature in the small box enough to raise with additional 1 degree. The problem is that even if you take it out of the box, the heat dissipates via the power lines, which are quite short in this case
i will make a new design of the box so that the temperature sensor is not connected directly and will send you only the new box and wiring
there is also a hardware part - somehow the USB Power supplies do something with the USB lines, so that the USB2Serial module does not go to sleep, and consumes 12ma constantly. I had tested with a USB Battery and with 5V directly.
And this 12ma inclrease the temperature in the small box enough to raise with additional 1 degree. The problem is that even if you take it out of the box, the heat dissipates via the power lines, which are quite short in this case
i will make a new design of the box so that the temperature sensor is not connected directly and will send you only the new box and wiring