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6. Solder the black wire from a battery snap to one lug of the on/off
   switch and solder a 5" black wire to the other lug of the on/off switch.


7. Solder two 5" wires to the potentiometer, as shown Figure 9-12.

Be sure to heed all the safety precautions about soldering that we give

you in Chapter 2. For example, don’t leave your soldering iron on and

unattended. And just in case a bit of solder has an air pocket and pops,

wear your safety glasses!

8. Cut the leads of the IR LED to^1 ⁄ 4 ", keeping track of which is the long
   (+V) lead.

Wear your safety glasses any time you cut wires!

9. Insert the IR LED in the LED socket, making sure that the +V lead is
   lined up with the white wire from the socket.

Figure 9-13 shows the LED inserted into the socket.

Pin 4 of IC1 to +V

Pin 8 of IC1 to +V Battery terminal block to +V

Figure 9-9:
Connect
components
to the +V
bus.

Chapter 9: Scary Pumpkins 199