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January 29, 2012
about 4 years ago
First - Thanks Fearlessnight!
Lot of fun and great first smd project. There’s not many and the layout and resist make it super easy.
I fixed a weird a problem…if anyone is seening the same thing here’s what I did.
Initially, tested LED orientation, continuity, R values per circuit.
And while it worked at 3v - off an adj power support - worked perfectly. It didn’t at 4.5-5v. Two LEDs stayed “stuck” on until there was a large sudden noise (like a clap), two other LEDs mostly always flickered…back to 3v and it worked great again.
I still don’t know the exact problem, but I decided to remove and test and resolder R5,6 since they set the voltage midpoint and maybe there was a teeny bridge which made a difference at higher voltages?
And while I still get the same readings as before now it works fabulously.
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