Greenwatts

Sun Sensor...cont

Build two LED sets consisting of 4 rows of 3 LEDs. You can build a simple tool by cutting in half a short piece of 1.5" pipe and using it as a jig to solder the LEDs. Lay out and drill an identical set of LED holes on the tool before you cut it. Place the LEDs making sure of correct polarity then solder the leads using light strand wire.

Insert both sets of LEDs in the housing then insulate the leads with tubing or tape. Make sure you know the positive and negative leads of both sets of LEDs. Cut and cement a shadow plate between the east and west LED sets. Chamfer the edge of the plate and mount it parallel to the last row of the west LEDs.

Trim off the bottom .5" of the sensor housing. The cut should be as close to 90 degrees to the pipe axis as possible as the sensor must align properly with the bearing in the drive housing.