Metronome from "Electronics Projects for Musicians"

Sturdag Lagernathy

Sturdag Lagernathy

Well-known member
This is another fun time with vero board! The metronome from "Electronics Projects for Musicians", of which you can find a PDF on Google, which I highly recommend doing. I built this into a 1590A enclosure for my daughter, to use with her piano. It has a Pretty good "click" that goes from around 30 bpm to maybe 300 bpm! It is very usable, however, and has a "line out" for plugging into amplifiers, P.A.'s or whatever. I recommend a switch for turning off the speaker while the line out is being used, but you don't need one. I used a "tempo" pot that has a built in on/off for the battery disconnect.

Metronome, EPFM.png

If anyone needs a question answered I'll be here!
 
"Speaker" is just a bit more powerful of a "click", to drive a speaker fairly loudly. A 10k resistor in series and a 1k resistor to ground lower the output current to the "Line Out" so it doesn't smash the front of whatever you're plugging into.
 
The "Tempo" control is quite usable, and I think sensitive enough for a practice metronome. I'd have to look at the schematic again, but I believe changing the high and low tempo limits is fairly straightforward, just changing out the right resistor or cap. It would probably be worth breadboarding to do just that, I just used the values in the book. I highly recommend the book BTW, it got me started as a 13 year old punk, and it has a lot of really cool effects. Josh Scott built a lot of JHS Pedals off of it!!
 
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