Cytron Technical Forum

I programmed pic16F877A so that when switch 1 is pressed, motor 1,2,3 rotate CCW and then if switch 2 is pressed, motor 1,2,3 rotate CW, then if no switch is pressed, motor will stop. At first, i test the driver without connecting the motor, When i press switch 1, LED indicator for CCW lights up for motor 1,2,3 correctly. When i press switch 2, LED indicator for CW lights up for motor 1,2,3 correctly. When i did not press any switch, all led indicator off. So my program is correct. Problem occurs when i connect motor to the driver circuit, when i pressed switch 1 or switch 2, both CCW and CW led indicator lights up and the motor is not running. From my understanding, i know that when both CCW and CW is high in logic means motor cannot turn in any one direction which causing it to stop.I just need to know why this problem occurs..............

DC motor used : SPG30-60K.

Supply to the FD04A : DC Adapter 12V (500mA).

Try change the power supply to motor with battery or higher current adapter. It seem to be not enough power to drive motors.

Thanks ober