Hello
I built a stand alone L293D H-Bridge motor driver Board based on this lay out --- http://www.freewebs.com/isuru-c/motor_driver.htm
The board works great when sending the standard HIGH and LOW commands to the "direction" and "enable" pins.
My question is: I made the assumption that a HIGH/LOW command to the direction pins would set the direction and a PWM command could be sent to the enable pin to control the speed in both directions. Is that true?
I have tried the enable pin with HIGH/LOW commands and the motors work fine, however when I send a PWM command to vary the speed it acts as though I'm giving a very low speed setting and never changes, even though the signal in my sketch is constantly changing up and down.
I did create the board exactly like the drawing that I linked above with the exception of pins 1 and 9. I made inputs out of them in order to vary the power in.
The end goal is to drive the motor with variable speed using a transmitter/receiver setup.
Thanks in advance
Rodney