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Powering TMC2208 with external 24V PSU

Posted by Kespa

Kespa

Powering TMC2208 with external 24V PSU
August 28, 2018 07:33AM

Registered: 5 years ago
Posts: 3

Hello all,

I use a RAMPS 1.4 + Arduino MEGA. I have 2 power supply in my setup 12V and 24V (for the heatbed).
I would like to power my TMC2208 drivers with 24V.

Is it possible to remove the VMOT and GND pins (the ones connected to the RAMPS) of the TMC2208 drivers and to solder directly +24V and GND of the 24V power supply on these pins ?

Thank you

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Dust

Re: Powering TMC2208 with external 24V PSU
August 28, 2018 08:42AM

Admin
Registered: 13 years ago
Posts: 7,001

Yes, most just put the pins in the driver facing up vs down

but you should also have caps across the vmot/gnd pins to smooth out power spikes, as the ones on the ramps arent being used if you do this.

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Kespa

Re: Powering TMC2208 with external 24V PSU
August 28, 2018 04:35PM

Registered: 5 years ago
Posts: 3

Thanks for your answer!

Yes, you're right for capacitors. What do you recommend? 100uF 50V?