LM317T Voltage Regulator with Pass Transistor

This is my homemade miniature elevator controller, using relays! it drives a TEMIC 24VDC motor, and its runs on a HP 18V 1.1A power supply, from an junked inkjet printer. The motor runs on the full 18 volts, and for levelling it runs on 5 volts, using a LM7805 voltage regulator. the levelling switch will be replaced with some more microswitches when i begin building the real elevator shaft. the buttons are : up to floor 2, down to floor 1, emergency stop.



http://www.youtube.com/watch?v=LqhlC9t1xkI&hl=en