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Topic: How to troubleshoot max7219? (Read 8988 times) previous topic - next topic


Thanks for the suggestions anyway.  At least you won't have my issue as badly because those dips are easy to drop into a working project with a socket or breadboard.  This is my first scratch-built SMD project, I never realized what a pain it would be to debug.

I ordered a 5 pack of soic->dip adapter boards from ebay, so I can drop one of the 7219's into my breadboard.  The dip device I have is from maxim's sample program; can't get more reliable than that. 

It's going to take 3 weeks to get the adapters, so now I'm debating also ordering some more 7219's from a different supplier so at least I'll have them sooner.  I love what the internet has done for this hobby in terms of price and selection, but hate what it's done in terms of slowing down the process.


Have you find what was wrong ? .... 5 years later ^^

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