Khalid, Thanks for pointing out the instructable in your post. It is looking like the boards I transplanted need the 1.5K resistor discussed in the instructable. It looks like the blue pill I received

I would also like to know more about the "defect" that was referenced by Robotdyn on the F303 chip. The one Blue pill board that I did the swap on (described in a previous post) seems fully functional

For no clear reason I am getting a brief message on my SHC (Teensy based) during power up just prior to the main SHC display coming on. The warning is "WARNING Coordinates Observing Site.." The SHC se

Just completed and tested the chip transplant (raw F303 integrated circuit purchased from ebay via China (received in about one month)...removed chip from 32STM blue pill and replaced it with the F303

I have been thinking about the focuser functionality for a while. What I did is to add a momentary contact switch mounted close to the focuser. This switch, when pressed, disables the focuser motor dr

I have been tracking the availability of the unmounted F303 chips on Mouser. I ordered a few in November...at that time delivery was in early February. Just checked and now the delivery is listed as i

4.21f looks like it did the trick! Pending more testing, the tracking rate looks correct and the guide rates look correct. Also feeling better about my sanity. Thanks for everyone, especially Khalid a

I did some investigation of the behavior pre and post TMC mode switch change. When the RA is tracking way too way (post TMC switch change), I scoped the waveform on the RA axis. I was wondering if the

Are you concerned about having active (read: giving off heat) electronics in the scope tube? I am not sure it is on much concern but I would guess heat (electronics, driving the motors) would generate

Khalid, I don't have these drivers on hand but I am deep enough in to look into ordering some. I would also want to look into what changes are needed on the circuit board. Stay tuned....

Khalid, Thanks for your help. I just went through the process of testing a number of 4.x versions with my system...in sort of a binary search, backing my way from 4.16 which worked to the present vers

I think I may know what the problem relates to. Specifically, the AXISn_DRIVER_MICROSTEPS_GOTO setting. When I was having the rapid track problem with 4.21d, I had the: AXIS1_DRIVER_MICROSTEPS set to

Martin Bonfiore <marsbonfire0@...> 1:06 PM (3 hours ago) to me I recently upgraded from 3.16 Release to Master 4.21d, primarily to get the spiral search feature. At one point I believed I got it

For some unknown reason I am not getting the needs >= 4.7 message and spiral is working. I have no clue why since It went from fail to working without changing anything. I am starting to question my s

The wifi had not been reflashed to the latest version...so I just completed that and sorry to say, I am having the same problem i.e. Android is reporting the spiral search needs 4.7 or later. To troub

Ohhhhhhh....no I did not reflash the WiFi board. Didn't think of it as possibly connected (no pun) to the problem....will do this morning. Totally expect it is the root cause of the problem. Thanks!

Finally got hold of an Android tablet to control Onstep...very nice! I noticed the "spiral search" selection, but when I try to invoke it, I get a "requires Onstep v4.7 or later". I had just installed

A possible approach is friction clutches set with enough friction to slip during normal motor driven operation but less than what will cause damage to the gears/drivetrain. Clutch friction material ca

I had an interesting thought this morning regarding the need for the 10K series resistor. Note: strictly conjecture. As I read the STM32 literature, they mention that the GPIO pins can be set with int

I would appreciate it if you could measure the voltage (on a powered, problem board) across either your 10K resistor or the 100K when powered and the programming jumper set to the nominal 3.3V positio