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Messages - baihui

49
Project logs / Re: Really universal soldering controller
You must use a shielded wires from handle to the sensor or put a sensor in the handle (where it should be anyway).

Any high impedance line picks noise from nearby circuits. The higher the impedance, the more noise it picks. This is how electricity works and this has nothing to do with my schematics. :) The same will happen with oscilloscope input when you use plain wire from it to the circuit you measure instead of shielded coaxial cable.

So if you want the sensor to be on the back board, you must shield the wires to the handle.

It's going to be cumbersome. I need to buy the shielded cable again :)
50
Project logs / Re: Really universal soldering controller
I can notice your design skill has improved maybe you put more time in this version.

What happened to this PCB?  Is this the way to check if PCB has 4 layers?

A happy new year for anyone that is not Chinese.
For China republic, we will repeat a happy new year in 12 FEB 2021 ;D .

Tronix

Thank you for your blessing and wish you a happy New Year! This is a test done by the manufacturer. Each batch of 4-layer printed boards has only one :)
51
Project logs / Re: Really universal soldering controller
Can this interference be eliminated by changing which component, or must it be installed in a stand? If it is the latter, I will not try other circuits, I can only change the installation mode and rewire
53
Project logs / Re: Really universal soldering controller
No matter amplifiers or logic chips, they don't work perfectly. Maybe software can do it. Unfortunately, Sparky doesn't use touch hibernation. He didn't design this scheme more carefully
54
Project logs / Re: Really universal soldering controller
At first, I used your older version, which can't work in all workstations. I tried the variant of Sparky, which can't work in all workstations, because I have many workstations. Maybe my test is important. You can't deny that your solution has no problems, otherwise you won't redesign it
55
Project logs / Re: Really universal soldering controller
Your hands are doing completely opposite of your tongue

I'm looking for a more perfect circuit, so I try your latest version, and the results will come out in recent days. Sparkybg also said that it is from your variant, so there is no perfect circuit. My conditions also support me to try. The ultimate goal is to get the best one. Maybe your current scheme can do it, need to try it. That's why I ask sparkybg to consider redesigning software control Why

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