SparkFun Forums

[jongold84]

hello

im working on an art project and need to run 4 of those motors-
https://www.sparkfun.com/products/10847

will this driver-
https://www.sparkfun.com/products/10507

run 4 of those motors smoothly?
without heating too much?

im going to use arduino uno to control the system

im kind of new to this so sorry if I sound a bit of a brainless

[jremington]

That driver should work well with that motor wired as bipolar, but it is absolutely essential that you adjust the winding current properly (to 1 amp/winding or less) to avoid chip overheating. There are trimpots on the board for that. You cannot read the winding current with a multimeter, instead follow the instructions on the datasheet. Or follow those on the Pololu A4988 pages, which provide clear instructions for how to adjust their A4988 based motor drivers.

You will need a hefty power supply, preferably capable of up to 30 V at 6 amperes or more to make full use of 4 motors.

[jongold84]

thank you for your answer

1. why would i want to wind the current to 1M ? doesnt those motors need 2am to run properly..?
2. would you recommend to get a separate driver for each motor ? ( like the auto driver or so..)

thNX AGAIN

JON

[jremington]

doesnt those motors need 2am to run properly..?

No, 2 amperes/winding is the maximum current that can be tolerated without the motor overheating. It will run on much less but provide less than the maximum possible torque. The motor driver chips will not tolerate 2 amperes/winding.