control 3 dc motors with arduino

Other Hardware Motors, Mechanics, Power and CNC
1

Hello,
I've heard that it is possible to control 3 dc Motors ( in position and speed, with encoders) with a single Arduino board.
I thought that for a position control it ia needed to use the interrupt pins(which are only 2 on the board).

Could you give me some advice? It is possible? A code would be more than appreciated for this.
Thank you,
Catalin

2

For reading encoders its possible to use pin change interrupts which work on all pins
(for the Uno at least). Pin change interrupts are a little more complex to use than
attachInterrupt, as you have to work out which pin(s) changed in your ISR.