position control

Other Hardware Motors, Mechanics, Power and CNC
1

:o
Hey everyone,i'm working on a dc motor position control,i'm doing a closed loop control system with a potentiometer and a rotary encoder feedback system ,i'm using an uno and it's my first system to build

In pin8 of L293NE H-bridge we have this motor battery pin and i'm connecting it to +12 V,My question is

Do i need to tie up my potentiometer Vcc to the same voltage +12V ,because the potentiometer centre is connected to an A0 analog input in i'm reading it to help control my position ; Help if you can and do not hesitate to share any helpful sources or subjects please !

2

younes_hamza:
Do i need to tie up my potentiometer Vcc to the same voltage +12V

No. The potentiometer doesn't control the motor directly. You're just using it as an input for the Arduino. You should tie the pot's Vcc to 5V.

3

You'll blow up your Arduino if you connect the pot to 12V

Any Arduino pin is limited to 0V to 5V (if its a 5V Arduino).