Stepper Motor Arc Reactor

Step 4 Wiring it Up

Once you have a pair of coils electrically isolated with solder applied to them, go ahead and solder your led between them. If you are using a PLCC-2 led package (the leds only have 2 leads on them), then simply solder the 2 led leads to the coils. If, on the other hand, you are using a PLCC-4 package (package has 4 leads on it), you will want only want to solder some of the leads (consult the led datasheet to determine which leads to solder). For reference, a copy of the electrical schematic is included in the pictures below. From the schematic, I used 6 leds which I grouped into 3 pairs, with the anodes of each led pair facing one another (in other words, reverse the direction of every other led on your arc reactor).

Once you have soldered all the leds together, go ahead and solder on wires to connect all of the led cathodes together, and tie the anodes of each led pair together. Connect each pair of anodes to a current limiting resistor. At this point, power your circuit to test your led wiring, troubleshooting any failures. Once it works, I added on the backplate of the stepper motor (adding hot glue), and then made the final connections to the battery holder.