I think the high accuracy positional feedback means establishing a home position by stalling against a mechanical step. After that all moves would be incremental ...not absolute ...from there. Basical

I thought I had read somewhere that you need to cut the "CLK" pin off of the Trinamics 5160 module (as I understand it, that pin allows sourcing the clock used by the 5160 externally) and grounding it

First let me say that the onstep work and the stm32 blue pill work is very much appreciated. I just received the blue pill kit and I am in the process of adding a DEC axis to old classic GEM from Edmu

https://www.geckodrive.com/support/step-motor-basics/motor-power.html If you not familiar with this resource, gecko drives support section has a multi part tutorial on stepper motors. I highly recomme

I am really interested in the topic of how to cost effectively implement the high mechanical reduction that is available via a worm gear. Let me describe an architecture that I have started to experim

Is anyone actively pursuing tangent arm based tracking? It would seem to me that, while rotary high precision components such as worm gears and very high resolution rotary encoders are expensive, high

I second the interest in both your friction drive (materials for wheels, how you establish contact force, etc.) and your tangent mount design (dealing with tangent error, drive screw, etc.).

I can’t help but think there is an architecture for a tracking mount for stacked astrophotography that combines steppers with some degree of clogged pulley reduction to do the go to step to get the ob

I am confused by your statement...seems like you may be fine with your existing motors....given they have enough torque...electrically they seem to be fine??

Please bear with me...I have not fully studied all the email correspondence on problems with driving the stepper motors. If it has not already been emphasized, the quickest way to destroy a stepper dr

I am not aware of a standard color coding for stepper wires but i would recommend that you consider that blue to green showing open is because they go to separate coils...possibly blue/red is one coil

Probably missed something in the emails but what is "tucked-style" motor? TIA Virus-free. www.avast.com

This from the Avalon site: Indeed, transmission based on 4 steps reduction, give tracking errors that could be bigger than the other traditional mounts on the same price range but the absence of peaks

Have anyone studied the performance of the planetary spur geared stepper motors sourced from China? I know they cite some number of arc minutes error max...has someone actually measured one? Many desi

Not to be a downer, but I am going to guess they are in the hundreds of dollars/per. I seem to recall there is a company called Bayside?? that makes very high quality geared drives. While low backlash

Dave, Thanks for the detailed reply. I checked out the wiki on PEC as you suggested. Maybe you can indulge a couple more questions: If I understand correctly, the correction is typically (virtually al

I need to think about your discussion on the mechanically related issues for what might be called total error correction. My simple thought experiment is that some reference location on the drive is a

You may want to read: https://www.eetimes.com/burned-out-flash-trips-up-older-teslas/# regarding problems with flash memory. Someone please correct me if I am wrong but flash memory such as SD cards h

Using gravitational bias to “lean” against the gear lash sounds very good. The subject of backlash comes up frequently in small hobby cnc machine discussions. The $$ approach for linear systems is bal

I found some pushbutton switches that I purchased for building an SHC and thought others might be interested. Note: they are not surface mount and they may not/won't fit the stock design without some