<Stepper Driver

Vertex 3D Printer Vertex - Wiring and electronics
1

For my mistake i inverted both extruder stepper driver and now are burned.
I buy 2 new stepper driver from Futura Elettronica Shop.
Mounted in the corret way, and misuring ref voltage, they are both around 15 volt, but if i move the trimmer nothing happen. Always around 15 V

So i tought to have main board bruned, and i moved 2 of the working stepper driver (x and y) to extruder 1 and 2 position, and both have correct voltage (0.89 - 0.925)

So this mean that main board is ok and the 2 new stepper have something wrong.

I have to do something else to install the 2 new stepper driver ?
Could you help ?

Attached picture of new stepper driver

Bye Alex

2

Is it just me or is there missing a component on that driver you got compared to the once i have. Velleman mod for the odd current on the printer?

3

In those purple drivers, the measuring point is the potentiometer and not the small contact under the resistors. Check the procedure in the [color=#408040]Wiki[/color].

4

Thank’s a lot, problem solved
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