Last night I finally got some time to get some prototyping done. I figured that I should start with a regulator circuit so that I have smooth power for using with op-amps. I will build a more efficient and permanent supply when I need it a bit more but using what was on hand I have a half reasonable output from this hobby train controller that was sitting in the garage.

Just about to start work on the triangle wave generator from this page.

Stay tuned.

Cheers,

Rex

EDIT: Just finished compiling LFS on my server so I should have more time to work on this.