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Solution for stepper motor driver ic burnt

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it is very hard to say. what do you meant by burnt. Can we please see a schematic of your circuit and are you sure your driver can supply enough power into the stepper?

To be able to help we need a little more information to solve the issue

I hope you can get your problem fixed,

Dave
 
That Slam board is very common. If you will have a look at Piclist or Pminmo, they have replacements with fairly high current capacity for pretty cheap. I use a couple under a 28 pin microcontrollers control on my CNC Plasma table for my Z axis controller. It isnt an elegant factory AVTHC, but it works well enough and saved me 3000.00 USD
Bob
 
without a schematic it may be difficult to suggest a solution. But these devices are quite rugged, and have safety features to prevent overloads.

Make sure the RESET pin is not floating, this causes the motor to lockup, and heats the driver IC. Ground loops could also be a problem, make sure the IC is grounded as described in the datasheet (take note of the +5 supply ground and the motor supply ground, the sense resistances etc.).

thanks
a
 
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