1/16+256int SpreadCycle NOTE: if there is no pull down resistor built into the Ramps/Gen board from pin1 to GND then you have to solder a jumper in.Ģ) De-solder four pins from stepstick "en+cfg1+cfg2+cfg3" NO JUMPER!! - This will put you in stealthChop with automatic power-down interpolated 256 microstep mode.
#MKS GEN 1.4 DUAL AXIS MOD#
Or you can use the more powerful 1/16 spreadCycle mode (TMC2100: CFG1=GND,ġ) Most likely ALL JUMPERS OFF NO OTHER MOD is best, but slightly noisy. StealthChop with automatic power-down (open/unconnected EN pin) If you have problems like step losses then you can use a higher current setting in This refers to the state of the pins of the TMC2100 chip!! Not how you set your jumpers!! TMC2100- same, yours may be different from mine.įor most cases the 1/16 stealthChop mode (TMC2100: CFG1=open, CFG2=open,ĬFG3=open) is suitable. Ramps/GEN 1.4 does NOT mean yours is the same as mine. Your milage may vary as I have no idea what hardware you have. I have to probe my RAMPS later on to be 100% sure but it appears with no jumpers in place these will run as 1/16 microstep with 1/256 interpolation in spreadCycle mode.
#MKS GEN 1.4 DUAL AXIS DRIVERS#
My best gleaning of the info at hand is for my alliexpress supplied RAMPS 1.4 and the FYSETC.COM white v1.2 TMC2100 drivers I just got. They dont say what you will end up with tho. Many of the suppliers recommend you pull all jumpers and setup that way. Some have a resistor on cfg pin one so when you pull the pin jumper it effectively shorts to gnd. Same as MKS GEN 1.4 (I have one of these as well)
There are ALSO several versions of RAMPS 1.4 shields out there. There are several versions of stepsticks built around the TMC2100 chip. After several days of reading I can see the problem. Still I am HUGELY impressed with the TMC2100Ĭheck if you have a pull down resistor on your controller and if you do trust me, just pull all the jumpers and set your Vrefīoy am I in the same boat. My printer is in pieces right now so I cant get real functional tests yet. Might be best to mix, TMC2100 X/Y and A4988 for Z/E might want to do something heavy for that axis if you need it. I am not sure they would perform well for a dual motor Z setup tho. Thats actually a few degrees cooler than the a4988 and DRV8825 with the same test. Temp, even without fan cooling my IR temp showed 35c on the heat sink after 20 min of motor on hold. The DRV8825 squeal constantly and I wish I did not waste money on them. I probed both my MKS Gen 1.4 and my Ramps 1.4 both of these I got from Aliexpress as well as all my steppers.ġ) Both of my boards do indeed have 100k pull down resistors that will pull cfg1 to gnd when all jumpers are off.Ģ) The TMC2100 is almost as strong as the a4988 for torque and DEAD SILENT in 1/16 spreadCycle mode and dead silent.ģ) there is no reason to go further. I was planning on going all out and de-soldering pins to test each of the modes. I tested them all with a 0.9v ref setting on a loose stepper motor and simply tested holding torque and spin torque by hand. Ok, tonight I got to play with the TMC2100 first hand and compare it to the A4988 and DRV8825 stepsticks I have.