Step 5: 2N3904 NPN BI-POLAR JUNCTION TRANSISTOR, THE FINAL FRONTIER !
- Cut and strip some wire
- Twist the wire around the middle leg of the transistor
- Solder the wire in place
- Solder the other end of the wire to a 10k resistor
- Connect this resistor to pin 13 of the arduino with solder if using the nano.