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Messages - Jannik

3
Project logs / Re: Really universal soldering controller
Hi there,
I got a problem with calibration, as connecting a 10.06Ohms resistor results in R:374 and the potentiometer has a too small range. The voltage over the resistor is 3.808mV. I got the latest software and don't know which hardware is defective.
Thanks for your help
Jannik
4
Project logs / Re: Really universal soldering controller
Hi,
still can't get mine to work. I also baught the presoldered set from Tindie, but I have a problem with calibration. When I connect a 0,1% 10 ohm resistor I get a value of 360-390, depending on the position of the trimmer. I measured the voltage over the resistor and the current according to this blog and my values match pretty precisely. This is btw. the same for channel B. By my knowlege I would need to change R57 and/or R59, is that right? And which resistance should I change them to? I hope someone could help me, as I am very close giving this up.
(Room temperature is about right)
(24VDC switching Power supply)
Thanks in advance
5
Project logs / Re: Really universal soldering controller
Hi,

I also baught the presoldered set from Tindie, but I have a problem with calibration. When I connect a 0,1% 10 ohm resistor I get a value of 360-390, depending on the position of the trimmer. I measured the voltage over the resistor and the current according to this blog and my values match pretty precisely. This is btw. the same for channel B. By my knowlege I would need to change R57 and/or R59, is that right? And which resistance should I change them to? I hope someone could help me, as I am very exhausted by now getting this to work.

(Room temperature is about right)
(24VDC switching Power supply)

Thanks in advance
Jannik

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