Stumbled Across This...Might Be Interesting....I'm Building This Thing...

[trimph1]

http://www.jameco.com/Jameco/workshop/J ... id=3854041

Requires...

Parts and materials needed for this project
Ribbon cable (2 meters), or two 40-wire IDE cables, one with a connector in the center.
Hookup wire insulated, solid core, in 3 colors
USB cable (1)
Microcontroller board (1)
Multiplexer chips (2) NXP (Philips) HEF4067B
Resistors (32) 10Ω
Breadboard (1)
D-sub connectors (2) Solderable, one with crimpable end (if using IDE cables, three 2×20 male headers)
Screws (64) must fit holes drilled in the washers and pass through the clear plastic base
Solder tabs (64) One flat end for soldering onto; one end with a hole that should fit the screws.
Ball bearings (32)
Washers (32) to fit the ball bearings
CRT monitor be sure the screen isn't curved!
Acrylic/plegixglass sheet cut to fit CRT monitor screen.
Cardboard (4x10 inches)
Duct tape
Milk crate or some other way to hold the monitor, or construct a simple frame from wood.
Poster board cut to the dimensions of the CRT monitor screen
Glue, clear

Tools used in this project
Multimeter for checking connections
Needlenose pliers
Ruler
Screwdriver
Soldering iron
Solder
Wire cutter/stripper
Computer to run your program
Metal file
Vise
Router
Band saw
Drill press to match the screw size

Follow the steps for making your own beat sequencer using ball bearings and washers....

[GaryG]

I remember this on Make a year or two back, liked the idea a lot but could live without the monitor/milk crate shenanigans.

Then last year I obtained an old busted laptop (back hinges broken) and have been contemplating what to do with it. Thought of this project, probably make a fairly compact tabletop unit.

Maybe if it doubles as a Mame cabinet then I'll get really enthused...