Today I decided to work on my board. It starting loosing tracking a few days
after I installed some fancy glass enclosed LDRs.
So, I removed the power jumper and connected the +13.6 into the board at the relays.
Built a little adjustable regulator for the logic circuity and relays.
I also pulled up the 1K pull-up for the East LDR and replaced it with a pot.
Using the pot, I should be able to balance the LDRs, so the voltage is the same on both, when both have full sun on them.
Using the reference pot (on left side), I might be able to tune the board
to work with most any LDR. Matched or not.
Edit:
Yesterday, it wouldn't track east. Last night, the tracker didn't go home.
Today, I checked the board using a jumper (& open) across the LDR inputs.
It tracks west, but not east. The east replay is pulling in, 'Clicks', but is not
outputting power to the motor. A motor control contact must be 'open'.
Checked the board with full +12v (bypassing the regulator).
I wonder if radio shack carries this relay?
