I have to push the Start button again with A0 > 0. Trouble is, when I push the start button and then open the pot, it doesn’t initiate the motors. But when the pot is closed, it obviously doesn’t start. When I push the Start button, the motors turn if the potentiometer is open. So now when the program begins no function (Start, Stop, Rev) is running. I want to start loop with TurnMotorA and then let the buttons initiate the other funcitons (Stop, rev, turn), but that program doesn’t run.
#ARDUINO ANALOGWRITE VS DIGITALWRITE HOW TO#
I went back to Arduino and looked up how to light an LED with a button, so now my buttons are all wired right. I have a potentiometer at A0 to map speed1. It’s not like a rotary encoder, where we can’t make a selection without sensing the tick. The physical setup is such that there is no bounce, and the loop is so fast that we don’t need to see the button at the first contact. Thank you very much, but I’m not interested in bouncing. We create a function which control the direction and speedĭigitalWrite(in1, LOW) // Switch between this HIGH and LOW to change directionĭigitalWrite(in3, LOW) // Switch between this HIGH and LOW to change directionĪnalogWrite(ConA, speed1) // Then inject it to our motorĪnalogWrite(ConB, speed1) // Then inject it to our motorĭigitalWrite(in1, HIGH) // Switch between this HIGH and LOW to change directionĭigitalWrite(in3, HIGH) // Switch between this HIGH and LOW to change direction Pot is fully closed, the motor isn’t running, and A0 = 290.
#ARDUINO ANALOGWRITE VS DIGITALWRITE SERIAL#
When these if statements are removed and TurnMotorA is the only function running, the motors start turning as you open the pot.Īnd the serial output isn’t faithful in real time. Like, the motors should be engaged but motionless, so the motors start to turn when I increase A0. But when I push the Start button and open the potentiometer, the motors don’t go until I push Start again with the potentiometer sending signal into A0. When the potentiometer is closed all the way and speed1=0, pushing the start button doesn’t start the motors. When I stop, I had to set speed1 =0, because serial kept outputting the last speed1. I made a PWM program with an H-Bridge and three buttons for Start, Stop and Reverse.
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