Products > Test Equipment
finding short on motherboards with a shorty (with display)
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CaptainBucko:

--- Quote from: Ocela on May 16, 2024, 09:51:05 am ---After a certain period of operation of the device Shorty Pen (frequent calibrations), malfunctions began.

--- End quote ---

What FW version? v1.02.03 was released a month ago on the GitLab site.

plus a few photos from the top side load of components from yesterday. Last time I hand soldered 0603 was 15 years ago, and I remember using too much solder. back then. Oh well, bigger the blob, better the job.....


Pater:
I also assembled short -circuit finder. Thank you for publishing the documentation. I allowed myself to add a current source to the connection.

The code has been redesigned. The measurement is accurate enough. My solution can be found here (only Czech, the translator will do a good job).
Evi:
My variant.
1. No current when no measurement - battery longer life. Lower measurement current due to absence of 2 Ohm resistor.
2. Simplyfied calculation: Rx = (volts / 27) / (current); More accuracy.
3. My SW stored and displays last measured Rx minimal value between measurements instead of -----. It is more convenuent.
4. Current measured on 1 Ohm resistor during calibration and stored in EEPROM.
indman:
Evi,thanks! Can I have the Proteus project and the firmware?
Evi:
Sure!
Anybody can.


Fast and dirty
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