Electronics > Beginners

Bit of a noob, needing project assistance.

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rstofer:

--- Quote from: starhawk on November 18, 2018, 11:15:57 pm ---I think I figured it out, and boy is this embarrassing. It's also a testament to the ruggedness of the various chips involved...

I wired the supply rails backwards :-[ I've got 5v going to the LCD and 12v going to the everything else. Ooooops! I don't think I've cooked anything, but, by the same token... ya know, guys, I really don't think it's going to work out very well, wired like that...

I know exactly how it happened, too... to get the power socket to fit, I had to stick it in upside down.

Time to get out the iron :-\

--- End quote ---

You aren't the first, only the most recent...  And maybe not even that!

Try a Blinky example on your Arduino before you bother with the real project.

starhawk:
Blinking an LED with a microcontroller is something I do when I need a nap, ugh :=\

I'd rather use a 555 for that, anyways... I'm good with hardware that DOESN'T need programming, lol.

Thanks also for the o-scope tutorial, I'll pull it out after I fix the power supply issue. Gimme... 30min or so? I'm slow and the wiring is tight there.

starhawk:
Power's fixed. Alas, the SD card is toast. I'm going to see if I have another really tiny one...

EDITNESS: A friend is bringing me a new card in about an hour... testing will resume once the card is formatted and programmed.

rstofer:

--- Quote from: starhawk on November 18, 2018, 11:34:58 pm ---Blinking an LED with a microcontroller is something I do when I need a nap, ugh :=\


--- End quote ---

And if your project still doesn't work, how do you know the CPU is doing anything rational?  It's a rare project that works right out of the gate.

Think about the number of thing that have to work perfectly to get that LED blinking?

gcewing:
This is why you always check power supply voltages when powering anything up for the first time!

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