ohmic probe board
01 Jul 2020 17:39 #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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01 Jul 2020 19:49 #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?
Are you sure those files are OK?
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01 Jul 2020 21:48 #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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01 Jul 2020 23:09 #173360
by tommylight
Replied by tommylight on topic ohmic probe board
Also google does not find anything useful from your info.
Getting suspicious..............
Getting suspicious..............
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01 Jul 2020 23:12 #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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02 Jul 2020 12:15 #173406
by tommylight
Replied by tommylight on topic ohmic probe board
V4.0.7, no import anything or anywhere ! 
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02 Jul 2020 12:50 #173409
by phillc54
Replied by phillc54 on topic ohmic probe board
It is based on this:
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02 Jul 2020 13:48 #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.
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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10 Jul 2020 01:12 #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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10 Jul 2020 01:50 #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.
It is noted at the bottom of the first email.
The following user(s) said Thank You: crowloy
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