shobhit_goel10
New Member
Hi I am developing a circuit for college, which transmits the data from PC Parallel port..
My connections are as follows:-
PC PARALLEL PORT ----> 8 RELAYS ----> HT 640 ----> RF TRANSMITTER
and
RF RECEIVER ----> HT648L ---->ULN 2803 ----> TWO STEPPER MOTORS.
I have connected an LED to th VT of HT648L.. The LED is glowing but there is no movement of motors..
I think the data is not coming on the HT648L data pins eu to some reason.
Can I please get some help as what may be the problem..
Thanks a lot..
My connections are as follows:-
PC PARALLEL PORT ----> 8 RELAYS ----> HT 640 ----> RF TRANSMITTER
and
RF RECEIVER ----> HT648L ---->ULN 2803 ----> TWO STEPPER MOTORS.
I have connected an LED to th VT of HT648L.. The LED is glowing but there is no movement of motors..
I think the data is not coming on the HT648L data pins eu to some reason.
Can I please get some help as what may be the problem..
Thanks a lot..