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Author Topic: Those who are using TMC2100s  (Read 105 times)

NathanC

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Those who are using TMC2100s
« on: October 17, 2018, 19:18:35 »

I am interested in knowing people's opinion(s) of the good and bad of switching over to the TMC2100 drivers. I'm mostly interested in quieting down my motors, as I am happy with the way the everything else works. What settings have you settled with (as far as stealthChop and/or spreadCycle) and their related pin configurations. I am currently running 0.9deg 1.8A steppers so it sounds like my resolution shouldn't suffer much and the TMCs will make up for their lack of current abilities.
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NathanC

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Re: Those who are using TMC2100s
« Reply #1 on: October 30, 2018, 20:11:12 »

The TMC2100s are installed. However, there is a horrible high-pitched whining sound throughout them being powered up. Anyone have this issue and have figured out how to solve it? Besides the squealing, the movements (both slew and tracking) are dead silent. I have not done a night of tracking yet so, can't comment on the real world action.
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NathanC

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Re: Those who are using TMC2100s
« Reply #2 on: November 02, 2018, 16:40:45 »

Seems my steppers just don't like spreadcycle. Changing vref did little to help. Since I installed all the cfg pins on the TMC2100s, without having looked at the code in AstroEQ or the datasheet for the TMC2100s, I just pulled the jumper pins to force the tracking into stealthchop. Slewing is still a bit whiny but tracking is now dead silent. At some point, I will probably just remove both cfg pins and see how the system works completely in stealthchop (plenty of torque in the custom gearing, I think). We'll see how that works since I can't program to save my life!
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telfish

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Re: Those who are using TMC2100s
« Reply #3 on: November 07, 2018, 01:19:48 »

I switched to them on two builds I use a ramps setup which is hard to configure with these drivers so I just leave all jumpers off. This gives me silent but slow slews.
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