You could use an LM317 and make it variable! Calculate resistors to put on the rotary for various voltages, or use a pot and a simple digital volt meter. Wouldn't that be neat.
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Show posts MenuQuote from: Muadzin on October 15, 2019, 12:16:48 AMQuote from: HamSandwich on October 14, 2019, 09:07:19 AM
I'm going to say Not Small Bear or BLMS based on their responses over on DIYStompboxes. I think we are a thorn in the side of Mouser and Arrow. I'm going to go for an oddball - Stewmac.
You can't just drop a bomb like that and not explain as to what happened on DIYStompboxes. Not everyone goes there.
Quote from: Aentons on October 14, 2019, 08:41:59 AM
So where's your money going on who's buying them? Mouser, Tayda, Arrow, Digikey, Farnell, Jameco, Pololu, Small Bear, Facebook, Google......?
Quote from: Axldeziak on September 22, 2019, 04:42:27 AM
You could blow out the Polytrog boards you already have as unsupported seconds, (or as a giveaway) and let the builder worry about the 18V source.
It would be a way to get some use out of them without the pile becoming landfill.
Quote from: Leevibe on September 05, 2019, 01:18:47 PM
Hey. Cool build! I think you will need to get a common anode LED instead of common cathode to make this work. If I were trying it I would ignore the LED pads on the PCBs and bring 9v straight to the anode. Then I would choose resistor values for each cathode that give even brightness between the colors. Then each cathode would be wired to its corresponding switch with its resistor wired between the cathode pin and the switch lug.