My new stepper motor driver ICs showed up. A bit of micro soldering and… SUCCESS!!! My tests were correct, the primary culprit was the stepper motor driver IC. My snapmaker A350 is back in service. Removing the chip: First, some Flux. [20201019_200409] Now a proper amount of hot air to release …

I think that all my linear module are without heatpad and one just broke up, what can I look for for an IC replacement?

The housing inside would need to be removed and cut to make room for it.

It does. The blue thermal heat pad sits on the IC chip and makes contact here on the inside of the rail housing. [20201029_080503] Like I said above, it would need to be cut to make room for a heat sink and some testing done to make sure it doesn’t interfere with the rail’s function.

Has some one replaced the original TB67S109AFTG 50V/4A stepper motor driver with a trinamic one? I would use a KINGPRINT TMC5160 steppermotor StepStick wit 40V max 4,4A becase of the same ampere rating and the 24V only power suply of the SM2.

Hello Geared I wouldn’t do it, becase the heat sink use air for the heat removal, there is no fan in the Rail module and the air volume is very smal. I think Snapmakers idea was to use the hole aluminium of the rail to tansfer the heat from the stepper motor driver IC to the outside. I think it is b…

The use of a tmc5160 isn’t as easy as swapping the chip, it would require a whole new PCB design. Which is something I am working on. As far as the heat sink goes, the original is just a flat plate. Any heat would need to radiate back across the chip to dissipate into the rail mount. Not ideal. Wit…

The exchange of the motor driver to a TMC one is never easy, but Trinamic has a modul called SilentStepStick ( https://www.trinamic.com/support/eval-kits/details/silentstepstick/ ) how was build for ohter 3D printer. I want to adapted this board of the TMC 5160, Version 1.2, freely available on the ma…

I have looked into the 5160 and it’s not suitable for this application. The 5160 stepper resolution is set by the controler, the original chip the step is set by making a combination of pins high or low on the rail board itself.

While I completely agree with you, in a pinch if I was forced to use that chip, it looks like the standalone mode could be as few as /8 microsteps. The main controller can comfortably run at a pulse count that would equal around 20mm/s at that microstep setting. If there was a huge desire to use tha…

Well as you mention CAN :smiley: I think someone has to keep the autority on direction and such. waht ive seen, the step size can be varried, usualy, tell the “local” controller to switch step size, move to encoder pos for a rapid, then switch back to the stpper commands by the main controller? I …

Update: Rail module repair = SUCCESS!

Snapmaker 2.0 (3-in-1)

brent113 November 10, 2020, 8:33pm 25

That one I presume?

Seems like a super vanilla cheap stepper.

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Snapmaker 2.0 stepper motor drivers, noise and upgrade Snapmaker 2.0 (3-in-1)	37	6052	July 30, 2021
Circuit diagram linear module? or why my linear module is broken Snapmaker 2.0 (3-in-1)	37	3401	November 7, 2020
Digging deeper... A work in progress Snapmaker 2.0 (3-in-1)	8	1037	October 19, 2020
Flashing the controler? Snapmaker 2.0 (3-in-1)	49	4036	December 25, 2022
Anyone have Technical Data? Snapmaker 2.0 (3-in-1)	7	3070	August 4, 2020

Update: Rail module repair = SUCCESS!

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