May not have a bearing on your problem but on a different type of setup I solved a similar issue by replacing the stepper drivers. Gerry

Chad, Many thanks. Setting up a test on that now. Gerry

I cannot get Onstep to track properly and have encountered speeds more than twice expected tracking speeds. I wonder if you can suggest appropriate calculator and Config.h generator entries for my Dob

Chris, Solar tracking was selected and daylight saving was automatically rejected by Onstep. I did a timed one hour test this morning which suggests that the scope is tracking about 2.3 times faster t

Chris, Yes, I had done that previously and the app retained that data which I could select and upload getting "Success" as a response. Time is set by the Android phone. If that is the Ra and Dec then

HI, Got my my Onstep FYSTETC S6 V2 functioning, to a point. A few things are not right. 1. The system is reluctant to do initialisations in daytime and I usually kick start trials by manually orientin

Have you set the Boot 0 jumper?

Martin, My apologies. Double checking my original email I found a typo and I find I'm a decimal point out on my primary ratio. For simplicity I had rounded down a figure of 38.1:1 but foolishly typed

Excluding the NEMA gearing of 50:1, my final stage gearing is 380:1. After factoring in the motor's planetary gears, the total gearing is 1907:1! My optical tube weighs about 10 Kg. I wonder what sort

I should add the optical tube holds an 8 inch mirror. Gerry

When I bought my stepper motors for my Dobsonian conversion I assumed I would use the existing friction pad bearings and bought NEMA 17s with 50:1 planetary built-in gears. In the meantime I discovere

The FYSETC is a very useful board with lots of capacity for added features although it has given me a bit of trouble. Against that, let it be said I'm not exactly an electronics genius. Suffice it to

#dob

Hi, I'm attempting to configure Onstep for a Dobsonian ALTAZM mount and keep getting validation errors for the parameters relating to AXIS1-LIMIT-MIN and AXIS1-LIMIT-MAX. Here are the appropriate line

Chris, That was among the things I tried although I think I may have left the other TinyGPSPlus library files in place. I'll temporarily rename them and try your suggestion. Gerry

Despite once again downloading the TinyGPSPlus directory and expanding it in Arduino/Libraries, this remains an issue. It is all the more perplexing given that this is a setup I previously compiled su

Compilation is abandoned and I get this IDE error message when compiling Onstep. Any idea what the problem is? I suspect I'm missing a file somewhere. Gerry Arduino: 1.8.16 (Windows 10), Board: "3D pr

Good news! The new stepper motor drivers solved the non-reversing problem and I am now able to command the motors to turn in both directions. Gerry Byrne

Hi, Having just read Khalid's note in the VRef tuning section about the various types of LV8729 driver I find I have what appear to be two types (see photo). However both appear to have the same resis

John, Many thanks. I'll let you know how things progress. Gerry

John, I have tested the Axis One circuits and I am getting a short between pins 1 and 2, and 3 and 4 on the board. That translates to 1 and 3, and 2 and 4 on the motor, given the way I have wired the