Hello Im stumped,frustrated. I put the cir together for the sun tracker, and powered it up ,No smoke or nothing.It seemes not to be working.when I connect the 12vdc to it,the relay for the east will energize, also the LED i think it was the same side "east will blink. I just have the Led's laying on the table.I put my hand over each photo res. one at a time and nothing happened, then I covered both photo res. and nothing.
I checked each part placement about 3 times before soldering it up, so I';m pretty sure all the parts are in correct.
The 2 "1n4004" I have the line side connected to the 12vdc.
The relays DPDT . i have the feed for the contacts connected to the center and the motor wires connected to the NO. side.
Could someone tell me what the reason for the "1n4004" is that he connected / inbetween to the relay coil.
I tried turning the pots and that didn't do anything.
I dont have the west and east limit sw. in, anyway their in the open posistion.
I cant think of any more to tell ya.
oh Im getting 9 vdc from the 7809
before i forget, the C3 [1000uf ] is one of those very very small capacitors, I had to solder wire on each of the ends ,its only about 3/16 long and 1/16 high/flat.
Thank you very much, Im just going nuts. I know that its a small cir.but I don't do this kind of stuff all the time,Im retired [63 yr]
again tks
John
oh here is the link again
http://phoenixnavigation.com/ptbc/articles/ptbc55.htm