Has anyone come across a cheap and easy plan for this? I have seen one plan that involves microprosessors, but I don't need anything that fancy. Just an adjustable click track with an LED.
You could always make a bad build of a tremolo ;)
Probably a steady click is hard to get out of these in the power supply at least I heaf.
One of these should do the trick I would think.
The cheapest and fastest one I found was in the keyboards [post 70~s era] I find these things on the curb with broken keys and scoop them up for I don't knwo what...
craig andertons is easy.
I advise getting a 555 click generator schematic of the net. Basically just a simple square wave generator... or you could make a free running multivibrator out of NPN's if you don't want to run to the store.
-Colin
You can easily make metronomes out of 555 timers. All you need is the timer, a single resistor, a single pot, two caps, and a speaker. I can't recall exact values off the top of my head, but try wiring 9 volts to pin 4 and pin 8. Wire a 1M linear pot from pin 8 to pin 7, wire a 4.7K from pin 7 to pin 6, connect pin 6 to pin 2 directly, wire a cap of maybe 47uF from pin 2 to pin 1, and wire pin 1 to the power supply ground. Wire a 220uF cap from pin 3 to the speaker and finally connect the other side of the speaker to the ground at pin 1.
You'll have to play with the cap and maybe resistor values too, but that the circuit. :)
You can make calculations here: (I almost forgot)
http://www.freewebs.com/qrp/555.html
With the values I mentioned above go from 2.94Hz at pot=1K down to 0.03Hz at pot=1M. :)
Take care,
-Peter
Also, an interesting idea is to run the clock pulse into a digital counter made up of flip-flops and a couple of primitive gates (or you could just buy a counter). You could have a rotary switch to select from the divide-by-n of the counter and then maybe have an extra pulse added every time the counter reads all zeros. This will allow an accent on the first beat of the measure (the rotary switch would select the time signature).
I believe I've seen this done before in some book. You could probably find it on the web somewhere. If you're interested and can't find it, I could probably design one.
Brad
(http://www.joefus.com/oldstuff/images/metronome.gif)