Casio SK-1 MIDI Modification v1.1
September 11, 2006
Casio SK-1 MIDI Modification PCB v1.1 (Paneled)
Thanks to everyone who took a look at the schematic for v1.1, the hopefully not screwed up version of my version of the Casio SK-1 MIDI Mod.
Besides not feeding +5VDC into Vcc on all the ICs (doh) and shorting out the LM7805, I also replaced the resistors with 1/4W parts because they are easier to find. Things were cleaned up overall, too.
So, hopefully in a couple of weeks I’ll have these available. For now, I’m just adding rubber feet and using the defective PCBs as coasters.
coasters
you probably want to coat them in some latex based clear paint or glue or else they rust.
Re: coasters
How? There’s no ferrous compounds in them. They are also hot air solder leveling plated, and that tends not to corrode either.