I just wanted to activate even Sensorless Homing ... Did you change anything in the example before uploading? The driver_SGT value describes the threshhold when the driver reports a stall. … They are already standard for use with SPI. However, it works the same with all other axes (that require an end stop). Change your homing files' structures. I'm about to change my set for a MKS Rumba + .. * This will let you control at which load the value will read 0. 0 1023 979 But Sensorless Homing can not enable .. I can also change the sensitivity. I tested it with Marlin versions 1.1.8, bugfix-1.1.x and bugfix-2.0.x. The TMC2130 provides an integrated motor driver solution for 3D-Printing, Cameras, Scanners and other automated equipment applications. One strange thing I noticed in the bugfix-1.1.x branch is that the direction of rotation of the motor is changed if I use negative value. I suggest you first try to get the example working. Without touching anything else on the firmware configuration, only the sensitivity of the sensorless homing. Put the carriage somewhere in the middle of the X axis. If you want to add sensor-less homing to your cr-10 and have the tmc2130 … I havent tried stall detection yet though. Further, sensorless homing might not be accurate enough for you printer. 0 1023 979 Let’s try the first sensorless homing now. But either no luck. I am only going to detail the steps necessary to make the TMC2209 work without sensorless homing, i won’t do a full tutorial on each option that might be required to make your specific machine work. I didn't need to do anything but I did change STALL_VALUE to 10 so that I could see coolStep working properly. .. Now that the stepper driver is configured, let’s make sure that Klipper can communicate with the TMC2130 by sending the following extended G-Code command to the printer: This command tells Klipper to read a few registers via SPI from the TMC2130. Depends which TMC2130 sou have. Will the TMC2130 … 0 1023 979 The higher the value, the later it triggers stall detection. 0 1023 979 It is advised to have a look in the datasheet of your specific TMCs. If you have a CoreXY machine, you can configure one stepper driver for X and the other for Y homing as you would on a cartesian printer. Also I noticed that you said it would go the wrong way with negative values, that to me points to an issue where if you use the diag pins to the endstops but don’t declare sensorless homing in the firmware it will sometimes do that on homing moves. The value is not reflected in the M112 command nor the initial echo out when i connect to the board. See my demo video with the RAMPS - I'm only using one TMC2130 on that board, on X. I tried again to open the StallGuard example, just changed the SPI pins to hit my Y-axis pins on my Ramps (see attached). Congratulations! @teemuatlut Any value I put in STALL_VALUE does not affect the behavior at all. Sensorless homing works best at medium motor speeds. Values have to be in between -64 (most sensitive) and 64 (least sensitive). Finally change pins according to our connection on board. The configuration however is simailar to the other TMCs with StallGuard: The above snippet configures a TMC2130 for the stepper on the X axis. This version is sold on Aliexpress: https://en.aliexpress.com/item/4X-MKS-TMC2130-V1-1-To-Stepstick-Stepper-Motor-Driver-de-Fun-o-SPI-with-Dissipador/32850172695.html?spm= a2g0s.9042311.0.0.38b2b90a7GC1In. And it is not surprising, since they … SKR V1.4 Turbo with TMC2130 in SPI mode with sensorless homing I have just received my new board (upgrade for Ender 3 Pro) and can't find info regarding connection of the supplied loom. As long as the Diag1 pin is connected to X-min endstop pin on the board (and Y) it should work. The examples should not work directly without having to change anything? This feature is so sensitive that it can actually take the place of traditional endstops. in front of the pin name. I have a SKR 1.3 with TMC2130’s and dual endstops on Y and Z and sensorless homing on all axis. 0 1023 979. There you can also find more details on limitations of this setup. Everything works great, Stealthchop, SpreadCycle, Interpolation .. The homing_retract_dist setting should be set to zero to disable the second homing move as a second pass is not needed, and attempts to do so are error prone. to your account. I did not find any instruction on this .. Just saying that Home is always done using spreadCycle .. ATTENTION: This guide only mentions the mandatory parameters and the ones needed to set up sensorless homing. Beim Board handelt es sich um ein Ramps 1.4 Board mit der aktuellsten Bugfixversion 1.1.x Für das sensorless homing habe ich auf der x und y Achse dbg1 vom tmc2130 … Values have to be in between -64 (most sensitive) and 64 (least sensitive). Change limit switches pins, … I have now updated the Arduino lib from the TMC2130 to version 2.4.3 and also had the same behavior. Attention!! That supports all you need for tmc drivers and works stable. Not sure if this would be the right place, but I am currently looking at upgrading the tmc2208 drivers I am currently using with a SKR 1.3 board and am trying to decide between the TMC2209 and TMC2130 to support sensorless homing… Question. On some TM… The … Activating sensorless homing is pretty straightforward but, if you want to get stallguard information on the z axis, it requires to plug the Bl-Touch in the Z max pin instead of the Z min. At this point, your axis should be able to home based on the stall detection of the TMC2130. You can use this instead of a physical end stop pin by changing the endstop_pin of the corresponding axis: The name of the virtual end stop pin is derived from the name of the TMC2130 section. * M914 X/Y/Z to live tune the setting */ #define SENSORLESS_HOMING // TMC2130 only pins_RAMPS.h. ... /** * TMC2130… TMC2130_TCOOLTHRS sets the speed above which StallGuard (= your homing signal) will be enabled (BUT: high TCOOLTHRS value = low speed). I bought these for not having been able to enable the sensorless homing in the old as well. * You can control the rotation speed with. i.e. If you wish you to use another axis, you need to change the pin definitions accordingly, along with the step port (PORTF as default) and pin bit position (0 as default). Marlin). If Watterott you have to close the SPI solder Bridge in order have them in standalone. The output does not change when I put load on the motors. To … Same here, why did you close it @boelle? There are many other options to configure on a TMC2130, make sure to take a look at config reference for all the available options. I suppose it would be possible that your particular motors need a negative threshold value and that somehow is bugged. Hey everyone, I somehow … The driver_SGT value describes the threshhold when the driver reports a stall. Please open a new issue for related bugs. Have a question about this project? For very slow speeds (less than 10 RPM) the motor does not generate significant back EMF and the TMC cannot reliably detect motor stalls. Further, at very high speeds, the back EMF of the motor approaches the supply voltage of the motor, so the TMC cannot detect stalls anymore. The text was updated successfully, but these errors were encountered: Hi, I run my steppers at STALL_VALUE 1. If you think that it bumps too hard into the mechanical limit, try to decrease the value by 1 or 2. Home the X axis by sending the following G-Code command to Klipper and observe the outcome: If the axis stopped early (first outcome), the stepper driver detected a motor stall even though there was none. Steppers work fine under Marlin, direction and all. actually i didn't care about it in the first place but it was important. I just tried it with a FYSETC v1.1 driver and the example does work for sure. I already used a TMC2130 before I bought it without being SPI and had to make the modifications to make it work with SPI (I followed the tips of topics here). We’ll occasionally send you account related emails. Will these settings overheat the driver? This will also set pin DIAG1 high. … Which is used is determined by which driver pin is connected to the MCU pin. The examples also don't work. Are you sure you're not hitting #10629 (comment) ? The diag1_pin of the TMC2130 is configured as open-collector pin. I'll try to put just 1 to test. But the TMC drivers are working perfectly on the printer, I already printed several parts with them .. But any value I put in STALL_VALUE does not affect anything. You can now proceed with the next axis of your printer. That's interesting... From my own experience with the latest bugfix versions of Marlin and Tmc2130 I would try your config first with the proven 1.1.8 version. The Led is lit all the time. Sign in You signed in with another tab or window. * A higher STALL_VALUE will make the reading less sensitive and. MKS Gen-L v1.0 & TMC2130 Drivers Wiring for SPI and Sensor-less Homing X_ Dia g n o stics Y_ Dia g n o stics X_ CS Y_ CS Z _ CS S D O S C K S D I S S GND D6 3 D4 0 D4 2 D6 5 5 V D5 9 D6 4 D4 4 D6 6 D4 9 … Homing a delta printer sensorless is not advisable due to missing accuracy. There are three possible outcomes of this experiment: If the third outcome happens to you, disable the stepper (by cutting the power or issuing a M112 emergency stop). Which Firmware are you on? * a lower STALL_VALUE will make it more sensitive. Where do I need to change the PORTF and the pin position? ... there two more things we need to enable and those are the automatic current tuning and the sensorless homing… MAX FEED-RATE and ACCELERATIONS should be reduced in order to not to lose steps and avoid layer shifting. Sensorless homing: Configuring tmc2130 sensorless homing. The motor only locks the shaft and does not turn to either side. The symptoms seem similar enough, though if it works on earlier Marlin versions, then it's something different. But do you have any tips on what could be wrong and I can not enable the Sensorless homing in Marlin? If your axis did not stop (third outcome), the stepper driver was not able to detect the stall, because the load on the motor still seemed reasonable to the driver. If you go higher than 8 it will be less likely to trigger. Will I have any of these problems with the configuration I have set above? First try to get the stallGuard example working. Have a look at the datasheet of your specific TMC to avoid mistakes. I could not make the example work properly. The drivers work perfectly with Marlin, I'm printing with them. I have the latest version of Marlin 1.1.8. So you should test values like 1, 0 or even -10 or so. StallGuard capable TMCxxxx stepper driver, SPI / UART interface of the TMCxxxx wired to MCU (stand-alone mode does not work), DIAG1/DIAG pin of TMCxxxx connected to the MCU, The axis stops moving before hitting the mechanical limit or does not move at all, The axis homes correctly (which is unlikely at this point), The axis bumps into the mechanical limit and keeps moving while making horrible noise. Sensorless homing allows to home an axis without the need for a physical limit switch. Issue was not solved and the topic is closed ! If I push the shaft, the connected LED of the DIAG1 does not change, it remains off. Sensorless homing is simply having no physical sensors mounted on the printer. The example uses direct register manipulation. Each stepper driver constantly monitors the motor current that it is delivering … The TMC2130 and TMC516x drivers with SPI interface have a few more features, which can be used for motor current setting via software or sensorless homing when the driver is connected via SPI to the … The stepper driver senses the lost steps and indicates this to the controlling MCU (Klipper) by toggling a pin. This information can be used by Klipper as end stop for the axis. The engine just makes noise, it does not spin anywhere, even though I type "+" in Terminal. So not exclusevely but at least for the homeing process. I am setting the maximum to 1838.5 mA (that's Okay) and the motor RMS is 1.3 A (more than 1.2 A). LowRider CNC. Sorry about the code not parsing, I don't know why it only worked on the last section. 0 1023 979 This means, the stepper driver pulls the pin low to indicate a stalled motor (active low) and the pin must be inverted by adding a ! The homing thresholds seem to be hard-coded (and there is no G-Code command for … Start ... @lucassing i finally solved my own problem by soldering small tiny jumpers to enable sensor-less homing. The configuration however is simailar to the other TMCs with StallGuard: The above snippet configures a TMC2130 for the stepper on the X axis. @rodrigosclosa Have you tried reducing HOMING_FEEDRATE_XY? Just sayin', because, unfortunately, I couldn't find a solution either. And the output is the same as I sent above, same values ​​... You commented about my engines needing a positive signal .. My engines are simple Nema17, worked with the A4988 and worked first with the TMC2130 except for Sensorless Homing. The values can be any interger between -64 and 63. G-Codes: Information on commands supported by Klipper. To trigger stall detection at a higher load, increase the value of driver_SGT (for example from 0 to 5). But the sensorless homing I can not activate at all! The device has an integrated microstepping indexer, the sensorless stall detection technology StallGuard2™, the sensorless … Sorry for the delay, but I tested the example sketch with the X-axis. How can this be possible? The rest sounds ok to me. I only changed the Y_CS, the others are unchanged. this was designed to completely enclose the xaxis belt drive and is only useful for sensorless homing! Is already any solution that you forgot to post it? Does anyone know what could be wrong? I too am having kinda the same problem with the tmc2130. For Marlin, I have not been able to make it work either. In stealthchop sensoless homing won't work at all. Simple example of the library I have been able to perform, the motor turns from side to side normally. In order to have stealthchop in standalone enabled if the pins are … TMC2130_SG_HOMING is just a flag, so the specific value has no meaning except being different from 0. My Step Drivers are from a new version of Fystec that already comes with 0ohm resistors welded on the CFG4 and CFG5, and without the SPI resistor. A few prerequisites are needed to use sensorless homing: Be sure that your mechanical components are able to handle the load of the carriage bumping into the limit of the axis repeatedly. Further, you need a pull-up resistor on the connection. @teemuatlut How can I do that? Does it help? Update the port and bit position in the ISR as well. 0 1023 979 What does the serial output look like? 0 1023 979 Sensorless Homeing requires the the TMC2130 to be in spreadcycle Mode. I followed this guide too, but without success: http://marlinfw.org/docs/hardware/tmc_drivers.html. if I hold the spindle the diag pin goes high and the serial out gives me the same results. With the LR2, there are a couple things to watch out for before you ruin your CNC, as it’s not designed for sensorless homing (or homing … Developer Documentation. Lowrider 2, 5'x10', Dual Endstops, Sensorless Homing, SKR 1.3, TMC2130. Instead, the TMC2130 can be used as a sensor. @mbuc My HOMING_FEEDRATE_XY was 3000, very slow.. How it could affect the working of sensorless homing? Ok, now that you know what can happen, let’s try it out.