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The block diagram is exactly my circuit. My BEEP sound is so low that flying of mosquito is louder, and I tried two of a kind.
I'll try later to connect a Led and see if it's lighted.
I've built yesterday the d123 circuit. the buzzer sound is very low. It's beeps shotly twice and than stops. try to replace the capacitors in order to get a longer and louder beep sound, but it didn't help.
Well, just build the BEEPER one from above. The sound is very low and its not single. It's comming on every 3 secconds. Need it to be much louder and only one beep.
Yes. as much as you will use a higher quality parts, as much it cost more. my battery pack is 10s4p. 40 cells of 18650 Li-Io. The other components, well, this is an issue for a new thread....
Hi
For longboard that I've built, I want to add a "beep" sound while turned on.
It works on self made 42v battery, but i can take any voltage on steps of 4.2v, or
add a step down converter.
The sound should be short, about half sec.
Any one can help me with a circuit for it?
Thanks
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