hey everyone, my setup: 6 x TMC2130 drivers, on a Carthesian Reprap with Dual X carriage. The Mainboard is custom but based on atmega2560 The problem/ Question: How do i get sensorless homing for X2 working? what I tried: to be sure the problem is not Hardware based, i changed the Pinout so that X1 is X2 and vice versa it is always "firmware X2" and not hardware related that X2 does not react on a Physical barrier. as on dual X carriage X2 is always Homing bevor X1 is homing, i also wired up a microswitch to fake a endsop X2 "x-max" and than X1 Homes and there sensorless homing is working. mit head hurts on this: X2 is homing to 1 X1 is homing to -1 so diag1 is conected to X-min (X1) and X-max (X2) is that correct? how can i further troubleshoot? do you have any cloue, or does someone know this should work? Bonus Quest:: Diag1 is HIGH ~3.8V as "open" and LOW ~0V on closed, is it possible to Change that behavior, or (more importend) the timeing how long it is LOW (as i do hav supression caps 10uF) on my endstops and theoretical they could supress a to short LOW .. i want an osciloscope for ehrrr christmas.. who tells my wife? https://reprap.org/forum/read.php?415,832206,832206#msg-832206 Fri, 11 Sep 2026 21:34:40 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?415,832206,835162#msg-835162 https://reprap.org/forum/read.php?415,832206,835162#msg-835162 datesheet Firmware - Marlin Mon, 01 Oct 2018 11:37:02 -0400 https://reprap.org/forum/read.php?415,832206,832206#msg-832206 https://reprap.org/forum/read.php?415,832206,832206#msg-832206
my setup: 6 x TMC2130 drivers, on a Carthesian Reprap with Dual X carriage.
The Mainboard is custom but based on atmega2560

The problem/ Question: How do i get sensorless homing for X2 working?

what I tried: to be sure the problem is not Hardware based, i changed the Pinout so that X1 is X2 and vice versa
it is always "firmware X2" and not hardware related that X2 does not react on a Physical barrier.
as on dual X carriage X2 is always Homing bevor X1 is homing, i also wired up a microswitch to fake a endsop X2 "x-max" and than X1 Homes and there sensorless homing is working.

mit head hurts on this: X2 is homing to 1 X1 is homing to -1 so diag1 is conected to X-min (X1) and X-max (X2) is that correct? how can i further troubleshoot? do you have any cloue, or does someone know this should work?

Bonus Quest::
Diag1 is HIGH ~3.8V as "open" and LOW ~0V on closed, is it possible to Change that behavior, or (more importend) the timeing how long it is LOW (as i do hav supression caps 10uF) on my endstops and theoretical they could supress a to short LOW .. i want an osciloscope for ehrrr christmas.. who tells my wife?]]> kabelfrikkler Firmware - Marlin Mon, 27 Aug 2018 17:35:46 -0400