Core Memory Shield for Arduino

Re:Core Memory Shield for Arduino by inetknght on Friday April 26, 2019 @05:25PM (#19761887)

That's an excellent question; one to which I would also like to know (more) about. So far I've thrown a bunch of money at it to just buy random pieces and cobble them together in spare time and see what happens.

So I have raspberry pis; I have arduinos. I've done some simple programming for both, to read from sensors. Water sensors and thermal sensors and buttons and sound pins all on breadboards were fun.

I figured I was ready for the next step: soldering together a kit. So I soldered together an ethernet kit for the arduino. That project fell flat: the arduino powered up while the ethernet shield did not; the arduino reported that it didn't even "find" the ethernet controller even though it was piggy-backed onto it. Usually when you plug in the RJ45 jack to a NIC you at least get the lights on the RJ45 port to light up. But no dice for me here either. And I have no idea how to debug that problem.

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Re:Core Memory Shield for Arduino by jsjrobotics89 on Friday April 26, 2019 @05:35PM (#19761965)

Sounds like you need to triage your circuit. Every trace should be connected to a certain number of other points. Turn off power and use a multimeter on the continuity setting to verify each trace connects to where it's supposed to.

After that, turn on power and verify that each trace has the correct voltage on it.

The two steps above should let you determine which part is failing.

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Re:Core Memory Shield for Arduino by russh on Friday April 26, 2019 @05:37PM (#19761977)

If you have a local makerspace, take it down there and see if they know of anyone who would be willing and able to help you.

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