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davidelivio94

Tmc 2208 V3.0 Anycubic I3 Mega

by davidelivio94 Jun 22, 2019
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Hey, thank you for documentation!
I'm wondering just switching the motor direction worked...
The pin order of the original drivers are: 1B, 1A, 2A, 2B
And the pin order of TMC2208 V3.0: 2B, 1B, 1A, 2A
So it doesn't match at all... Did you modified the connector?

OK, now I got it:
In the original motor driver, the chip designer are speaking of coil 1 and 2 / pin A and B
On the other hand, the chip designer of TMC2208 defined it as following: coil A and B / pin 1 and 2
Source: https://www.trinamic.com/fileadmin/assets/Support/Appnotes/AN045-How_to_replace_Allegro_A4988_with_TMC2208_01.pdf

Meanwile I also did the modification and everything worked perfect. Thank you!

;-) Did you change the connectors or the firmware?!

Firmware: Marlin-Ai3M-v1.4.6-TMC2208.hex

Good decision!

Hi, I have the same thoughts right now and i´m a little irritated. I already changed my Mega with V2.1 and used the firmware by davidramiro and this worked. But now i want to change on my Chiron as well and there is no firmware available for the V3.0 I think...?!

the silly of the tmc2208 and this one,
to reverse the sense of the engines you can download the original anycubic firmiware from here https://github.com/ANYCUBIC-3D

open with arduino and go to edit in the Configuration.h

define INVERT_X_DIR true

define INVERT_Y_DIR true

define INVERT_Z_DIR true

from true to false

And that's it

watch a tutorial on how to use arduino, however I don't have a chirion in order to test myself

Thank you and what about the extruder?

// @section extruder

// For direct drive extruder v9 set to true, for geared extruder set to false.

define INVERT_E0_DIR true

define INVERT_E1_DIR false/

for TMC2xxx the Vref is RMS = Imotor x 0.71
for Anycubic mega i3, the motor is 1.5A
1.5 x 0.71 = 1.06
Vref = 1.06V

thank you very much for the advice, I was looking for just that, you were very helpful, I will try