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Burned out SKR E3 Mini Gets New Stepper Driver

It didn’t take lengthy to determine out {that a} useless X axis and an message pronouncing “TMC CONNECTION ERROR” intended that one of the stepper drivers at the SKR E3 Mini 3-D printer regulate board had launched the magic smoke. (*8*) BigTreeTech changed the board below guaranty, and the printer was once again up and operating in brief order. But as a substitute of tossing it within the trash, (*2*)[Simon] questioned how arduous it could be to fix the useless board.

Removing the unique stepper driving force IC.

The brief solution is, now not very arduous. There was once no query as to which of the four TMC2209 drivers was once shot, because the X motor was once the one one experiencing an issue. The drivers sadly aren’t socketed in this board, however after a bit kiss with the new air, the previous chip was once off.

[Simon] didn’t have any spare TMC2209 chips, however the TMC2208 has the similar pinout and is a drop-in alternative. The TMC2208 is rated for somewhat much less present, nevertheless it shouldn’t be an issue below commonplace instances.

Other than the stepper connector getting a bit toasty all over the set up, the switch went off and not using a hitch and the board was once up and operating once more. [Simon] ended up striking the now repaired SKR E3 Mini in his Ender 3; a pleasing 32-bit improve in comparison to the ATmega1284 that was once at the beginning operating the display. Though previously, he’s controlled to squeeze somewhat extra efficiency out of the older 8-bit board as smartly.