ohmic probe board

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6 years 3 months ago #173325 by crowloy
ohmic probe board was created by crowloy
this has been uploaded to oshpark a rather nice PCB service with purple boards. 3 of these are $18 with free shipping. Can't get better than that. This board is designed in eagle cad from a schematic I found by SignTorch. The board I've designed is untested at the moment but I have 3 of them coming in the mail

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6 years 3 months ago #173337 by tommylight
Replied by tommylight on topic ohmic probe board
Can not open attachment with eagle as eagle linux version does not work for me, can not open in geda, kicad and librepcb.
Are you sure those files are OK?

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6 years 3 months ago #173345 by rodw
Replied by rodw on topic ohmic probe board
Can you post a pdf output of the board and circuit. That we can see without having to install software.

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6 years 3 months ago #173360 by tommylight
Replied by tommylight on topic ohmic probe board
Also google does not find anything useful from your info.
Getting suspicious..............

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6 years 3 months ago #173362 by phillc54
Replied by phillc54 on topic ohmic probe board
I was able to import it into Kicad (v5.00) using File > Import Project and selecting the sch file.

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6 years 3 months ago #173406 by tommylight
Replied by tommylight on topic ohmic probe board
V4.0.7, no import anything or anywhere ! :)

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6 years 3 months ago #173409 by phillc54
Replied by phillc54 on topic ohmic probe board
It is based on this:

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6 years 3 months ago #173416 by tommylight
Replied by tommylight on topic ohmic probe board
To complicated and to sensitive for water tables.
A single small relay at 24V would be much better as it will need 10 to 30mA to trigger, that is enough to avoid any water issues and still sensitive to not need significant pressure on the material. And is fully isolated.

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6 years 3 months ago #174166 by crowloy
Replied by crowloy on topic ohmic probe board
for some reason I did not recieve any notices of replies on this thread.

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6 years 3 months ago #174169 by phillc54
Replied by phillc54 on topic ohmic probe board
If you don't log into the forum and read the next reply then you won't get any email.

It is noted at the bottom of the first email.

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