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MS05000 Budget Logic Analyzer Probe Set Design

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joeyjoejoe:
Very cool, nice work!  :-+

Gandalf_Sr:
Total cost for components for 2 probe boards and 1 connector board (including 2 x 6" ribbon cables) is $35.28, if I order say 50 of the PCBs my guess is $1 each for the probe boards and $2 each for the connector boards.

Still doing more testing but here's another picture of the 2 different probe PCBs, the one on the left with the red LED is the 1.6-5.5V version and the one on the right with the green LED is the 0.6-3.6V version.  I triggered it from D4 with a serial signal while feeding a 50 kHz square wave into the other probe board on D11 and D14, the yellow trace is analog Ch1 showing the 50 kHz signal.

Gandalf_Sr:
Here's an picture of the connector PCB (before I added all the termination resistors).

[EDIT] Did some high frequency tests on the 0.65-3.6V probe PCB running at 3.3V with a 50 MHz square wave from my DG4202; it looked OK but there was an occasional 1 nS jitter on all channels.

I wonder if that was the signal generator?

Gribo:
What part did you use for the 50 position 0.1" header?

Gandalf_Sr:

--- Quote from: Gribo on March 15, 2020, 06:29:24 pm ---What part did you use for the 50 position 0.1" header?

--- End quote ---
This one https://www.digikey.com/product-detail/en/sullins-connector-solutions/SFH11-PBPC-D25-ST-BK/S9201-ND/1990094

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