Lay down pads for short jumper wires to get the negative path to the emitters.

 

Ordered dremel wheel to cut pattern into stainless plate to overlay and trace with Sharpie on copper clad PCB and test HCL etch process. Reordered OONO relay - perhaps relay vibration was fluke.

 

I think I read it was a frequently returned item.

 

Lay down pads for short jumper wires to get the negative path to the emitters.

Planned Jumper Method:
t1 C and E are straight down if Gate has slight angle.
t2 is C and G are straight down. I planned on drilling nonconductive Emitter via straight down and passing E lead under 12VDC track (copper traces on component side-is that OK or problem?) and bring up through ground track to solder rather than over 12vdc.
Phototrans to ground at USB header was also planned to pass underneath. Those leads are long and very thin and is a solo wire carrying all board current back to ground so I may increase with thicker jumper.

Ordered drillbits cutting wheels and dremel tool. Am testing a stainless sheet trace mask method w sharpie and HCL+H2O2. May use aluminum sheet for trace mask.

Got sailboat and actuator and a couple eager sailors waiting for working product.

Updated circut cleaning up tracks and expanding pads for Helen Keller Soldering School Graduates. Wider gaps should decrease any noise or risk of bad etch shorts.

If I put copper clad on bottom and jumpers on top with components soldering appears easier. Not sure what industry standards dictate.

 

Ordered etching compounds white vinegar H2O2 salt method. Friend with CAD system cleaning up drawing though first board(s) will be drawn from metal plate stencil until I can get to a printer to try hot transfer or I saw an oil transfer method.

 

I use the transfer method.

 

Ordered etching compounds white vinegar H2O2 salt method. Friend with CAD system cleaning up drawing though first board(s) will be drawn from metal plate stencil until I can get to a printer to try hot transfer or I saw an oil and an acetone transfer method.
Board cooking in vinegar now...
Overexposed.
50% of desired gone. The good news is HCL BATCH#1 worked great!
Doubtful small - med small 1mm-1.5mm sharpie lines protect enough.