arduino.

[thomas]

how many dc motor can a arduino   run .

still waiting on my parts for the 1/32  siku  conversion 
so i got a 1/16 remote control digger for free and thinking off making it rc , just to see how would work using the motor that are in it for now , so i will need to be able to run 6 motor for the digger ,  two tracks ,  1 turning , 3 for boom 

thanks again 

[RC Tractor Guy]

Well you'll need a motor driver for each motor and each driver requires 1 PWM pin for speed control and 2 digital pins for direction. There are 6 PWM pins on an Arduino pro mini and on an Arduino uno because it's the same MCU. An arduino mega has 14 PWM pins but its a much bigger board.