How to make a Heating and Cooling Jacket

Step 16 Sewing your Circuit Together

 

                Once you have all the fans sewn in, the code working, and the Velcro attached, it is time to sew the circuit together. The fans will be connected in a parallel circuit.

1.       Sew all of the positive leads of the fans together using conductive thread or wiring. Using wire is much better. Not only is it easier but it also allows a higher current to travel through that circuit. If you want to use thread, you can. With thread, make sure to double the thread so that the current can be greater when you sew long distances. You can also use the thread to tie a connection between wires; it works really well at keeping them connected.

2.       Exactly like before, wire or sew all of the negative leads of the fans together.

3.       Sew your relay down to the jacket using regular thread

4.       Wire/Sew one connection from an open digital port on the Lilypad Arduino to the positive control of the relay.

5.       Wire/Sew another connection from the positive of the battery to the positive load of the relay.

6.       Wire/Sew another connection from the negative of the battery to the negative of the fan circuit.

7.       Wire/Sew another connection from the positive of the fan circuit to the negative load of relay.

8.       Wire/Sew a final connection from the negativeof the Lilypad Arduino to the negative load on the relay.

 

*See trouble shooting at end or heating system circuitry or photos of the two different relay schematics if you need help.