[sdiy] DIY Analogue Drum Machines???

[crystal]

>
> Not at all a silly question. DIY drum machines are incredibly fun. If
> you don't go too wild then they are usually far easier to make than
> ordinary synths and keyboards.

combining this thread with the pc synth thread-
i once used a radio crap shack coco (color computer, MC6809) to control a 
homemade analog drum machine. a bunch of twin t circuits, a SN76477, a few 
hacked up old drum machines that used an EPROM to trigger sounds, outputs to 
change patches on these hacked up old drum machines, outputs to turn on/off 
FX boxes, a few gate outputs to my homebuilt modular synth, and more.  this 
thing was a monster. programmed it all in assembler.  bent the pins up, 
soldered wires to the pins, and glued extra PIA chips on top of each other 
and then on top of the stock PIA chip on the circuit board inside the 
computer for xtra outputs. i think it had 48 lines of digital out. i really 
wish i had taken some pictures 'cause it looked like spaghetti! but it 
actually worked quite well and we used it in a bunch of live performances. 
was kinda like having a separate person controlling the drum machines and 
their FX.

perhaps a bit more than what you were thinking about?

now i use either software (not DIY)  or very, very old drum machines through 
lots of FX (not DIY).