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Enable pins [...] You can PWM these for speed control.
Hi,Quote from: rbtying on December 18, 2010, 01:02:21 AMEnable pins [...] You can PWM these for speed control. Using the enable pins for PWM is not a good solution, as they are much slower than the input pins, where the PWM ought to go - to the lower switching element in the bridge, to be precise.
Can someone explain why IC chips tend to have multiple GND pins? Would it be so hard to connect them all internally and have just one GND pin?
Can you check my schematic then? i think i figured it out.
Quote from: Soeren on December 18, 2010, 06:00:19 AMHi,Quote from: rbtying on December 18, 2010, 01:02:21 AMEnable pins [...] You can PWM these for speed control. Using the enable pins for PWM is not a good solution, as they are much slower than the input pins, where the PWM ought to go - to the lower switching element in the bridge, to be precise.Using enable pins reduces the number of PWM outputs you need, and OP is using an Arduino, where the PWM pins are randomly arranged around the board: four PWM outputs to the IC could easily become messy.