Why you should not move your 3d printers axis by hand. Demonstrated by killing an led: #3dprinter #electronics

Every reputable board will have protection circuitry for this, it is literally fundamental to driving any inductive load. You won't fry a prusa or duet board by moving your motors, but you might fry a dirt cheap board that cut corners where they shouldn't have.

I had 20+ printers in for repair with fried drivers for that reason. Of course all of them were a certain origin.

Faraday would be proud. Holonyak, not so much :)

@blenster

@blenster

Backfeed diodes. Preventing embarrassing motive electron flow problems since 1904.

I look at it like this. If you are moving a motor on your #3DPrinter by hand fast enough to burn out an LED or some other Circuitry then you have other more pressing issues going on.🥴

Back driving a motor. Yes indeed.

everything is fine, diode simply undersized

My original Ender 3 mainboards woukd light the screen when I did that.

Anf thstvis a warning light!