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controlling a DC motor with ULN2003 problem

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raza_q

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uln2003 circuit

hi all
Im trying to control a DC motor through my Laptop's parallel port using
ULN2003 IC but output on pin 15 is always high no matter input from LPT port is
0 or 1. Can someone help me out.

check out the circuit.
As far my knowledge goes ULN2003 should not conduct in the absence of an input on any of the input pins. Correct me if im wrong.
 

uln2003 dc motor

Based on the pin configuration the pin # 16 is not VCC.
 
uln2003 motor dc

Pin 9 should be connected to Vcc, pin 16 is output. Also, other motor lead should be also connected to Vcc, not GND. ULN has "open NPN collector output", which means it connects it's output to ground to close circuit. Read data sheets carefully before using IC's.
 

pin configuration of uln2003

thank you very much. I fixed it actually the circuit was from the net so im completely innocent:D anyways thanks for your help
 

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