Stepper Motor Driver Board overheating, wiring issue?

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i have several stepper motors driver boards driving motor

3d printer nema 17 stepper motor 59ncm(84oz.in) 2a 17hs19-2004s

http://www.omc-stepperonline.com/3d-printer-nema-17-stepper-motor-59ncm84ozin-2a-17hs192004s-p-18.html


and board

http://www.banggood.com/wholesale-dual-h-bridge-dc-stepper-motor-drive-controller-board-module-arduino-l298n-p-42826.html?rmmds=search

i running basic stepper sketch (rotate 360 & reverse).

the l298n getting crazy hot. runs 5 seconds gets little choppy , after 17 seconds motor stops.

this has happened on 2 different driver boards (one drok , banggood).



i have tried several motor connection combinations. motor either stutters (with little movement) or work gets l298 hot , shuts down within 10 seconds.


i feeding 12v in. there no load on motor.

what causing driver boards overheating?

the motor? wiring combo? input voltage?

is normal the  l298 chip hot, when motor idle?

thoughts?



see attached

the l298 unsuitable stepper motor. need specialized stepper motor driver. if motor required less 2 amps suggest pololu drv8825 2 amp motor need stepper driver can provide @ least 3 amps have comfortable marging. unfortunately lot more expensive.

the reason l298 overheating because coil resistance of motor 1.4 ohms trying take 8 amps 12v supply. if could, of course motor destroyed. specialist drivers can limit current protect motor. take lot of computational load arduino.

...r
stepper motor basics
simple stepper code


Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Stepper Motor Driver Board overheating, wiring issue?


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