caycee Posted March 12, 2022 Share Posted March 12, 2022 Controlling my printer from Octoprint or bare G-codes my Z-speed is just fine as set in my Marlin firmware. But if I try to move Z from my TFT35 knob any greater than 1mm at a time, the Z-motor stalls out from going WAY too fast. I'm thinking it might be the same speed as is set for my X and Y axis. Note the speed needed for Z is 10x less! #define DEFAULT_MAX_FEEDRATE { 6000, 6000, 600, 300 } How can I change that? Firmware for the TFT? Some Marlin setting I've missed? Other? Quote Link to comment Share on other sites More sharing options...
BTT Tony Posted March 15, 2022 Share Posted March 15, 2022 Hi, Please set as attachment Quote Link to comment Share on other sites More sharing options...
caycee Posted March 16, 2022 Author Share Posted March 16, 2022 Unfortunately, changing the Z value in that set does nothing. I'm using TMC2208 stepper drivers, and changing the Z-value from its original value of 1066.67 (3mm * 16microsteps * 200 steps/rev for my old stepper drivers) up to 20000 and down to 200 and it made no change in the behavior at all. Not even for the Z-position. (It still goes 100 mm for a 100 mm input.) Quote Link to comment Share on other sites More sharing options...
BTT Tony Posted March 18, 2022 Share Posted March 18, 2022 Hi, The Z axis cannot be moved, please send m122 to test the drive status. and provide pictures Quote Link to comment Share on other sites More sharing options...
caycee Posted March 20, 2022 Author Share Posted March 20, 2022 This was active during a stalled movement of the Z axis using the knob to do Z +/- at 1mm resolution. It stalled due to too many 1mm increments in a row. (likely about 3). A normal G1 Znnn movement on my machine must have F650 or less, otherwise stall. debug.txt Quote Link to comment Share on other sites More sharing options...
caycee Posted March 27, 2022 Author Share Posted March 27, 2022 Did that help? Do I need to compile with more debug enabled? Quote Link to comment Share on other sites More sharing options...
BTT Tony Posted March 30, 2022 Share Posted March 30, 2022 Hi， all axis indicate ok, The z axis suppose to work fine. You can also put another good driver to check if the z axis move fine. Quote Link to comment Share on other sites More sharing options...
caycee Posted May 7, 2022 Author Share Posted May 7, 2022 Ok, revisiting this I downloaded the TFT Firmware and found these: #define SPEED_Z_SLOW 500 // Default: 500 #define SPEED_Z_NORMAL 1000 // Default: 1000 #define SPEED_Z_FAST 2000 // Default: 2000 The only one which WON'T stall my Z motor is the slow one. The other two will just sit and scream... I'll have to recompile and burn my TFT FW. That ought to take care of it... Quote Link to comment Share on other sites More sharing options...
Administrators BIQU info Posted May 9, 2022 Administrators Share Posted May 9, 2022 If you have any product issues, please submit a request and we will arrange for an engineer to communicate with you as soon as possible. Click on the top navigation "Submit a request" or Please clickhttps://support.biqu3d.com/hc/en-us/requests/new Quote Link to comment Share on other sites More sharing options...
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