I built 3 of these and can't seem to make them work. The first one worked OK, until I decided to solder it on a PCB and the LM386 died (hurf used a socket for the next two so no death by heat.)
The last two I built constantly buzz / pop and I can't seem to figure out why. I'm no newbie at soldering (10+ years at it) but I just can't get the blasted thing to work right.
lol, yeah. have already transitioned to a much better op-amp, some filtering electronics, and a real speaker. this was just a little test. (also the camera i filmed this on is TERRIBLE and doesnt record sound too well.)
LED's are connected to appropriate resistors so even at peak voltage spikes, they shouldn't burn out.
better idea for this same effect is to use an unsaturated transistor to get the same flashing effect. even cheaper too ;-)
This has been flagged as spam show
I just finished my amp. Click on my channel to hear it plugged in to a Lanikai Tenor ukulele
chuckwier 1 year ago
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SEE MY AMP:
youtube.com/watch?v=YHfoON7ukSc
pegasomarcelo 1 year ago
if you could send me a breadboard layout/ schematic of this or post one... I'd be so thankful
vegetariandave 1 year ago
I built 3 of these and can't seem to make them work. The first one worked OK, until I decided to solder it on a PCB and the LM386 died (hurf used a socket for the next two so no death by heat.)
The last two I built constantly buzz / pop and I can't seem to figure out why. I'm no newbie at soldering (10+ years at it) but I just can't get the blasted thing to work right.
GGigabiteM 2 years ago
Hi could you give me the schematic please?
Acke992 2 years ago
that lm387 does it make speakers louder and for the lights does it need risistors if so how would u no which 1 to get thx looks cool
pancho4504 2 years ago
lol, yeah. have already transitioned to a much better op-amp, some filtering electronics, and a real speaker. this was just a little test. (also the camera i filmed this on is TERRIBLE and doesnt record sound too well.)
LED's are connected to appropriate resistors so even at peak voltage spikes, they shouldn't burn out.
better idea for this same effect is to use an unsaturated transistor to get the same flashing effect. even cheaper too ;-)
wackotackochris 2 years ago
cool project, but piezo's sound terrible, try using a magnetic speaker if you can.
Scioneer 2 years ago
you are gonna burn those LED's out methinks. cool though
ironchimpo 2 years ago