mm-2 pcb

[tomg]

I have good news the MM-2 will fit on a single sided
PCB this should reduce the cost of the board by at 
least 30% maybe more. I had to use a few quad opamps
to fit it all on the proto board. Everything works ok but
I'm going back to duals for the production version so
we can use comparitors for the vco. 

Here are a couple of pics of the MM-2 pcb. As you can
see I made a few mistakes...;-) Better now than later.

http://www.xavax.com/efm/pcb/pics/mm-2_btm-sm.jpg

http://www.xavax.com/efm/pcb/pics/mm-2_top-sm.jpg

I made 6 mistakes on the pcb and changed the following
on the schematic....

Remove C41 and connect directly
Change R116 to 10K
Change D18 to a 100K resistor
Change R94 to 33K
Connect R96 to U17a inverting input instead of  non-inv in. 
Change R41 and R61 to 47K
Change R43 and R63 to 100K

The MadMouse2 final will contain all of this. 

Tom