- NPN Transistor must sink to ground; it is on the wrong side
- NPN Transistor must have a 440 Ohm resistor in series on its Base pin to reduce current
- NPN Transistor connects to digital 4, not 0
- Dallas 1-wire connects to digital 3, not 1
- Button added to digital 2
- Button uses striped orange Cat5 wire and the 5V brown cat5 wire
- Button has 1k pull-down resistor to ground
- Digital 0 and 1 are USB/serial and should be NC
- Diode is pictured backward
- Radio Shack relay is longer than pictured, causing it not to fit
- Terminals pictured were unavailable; real terminals are 3 pins wide with only 2 pins terminating