Sensorless homing with tap. ru/r8qfnttr/install-xtream-ui-emre.

2 board with Klipper on pi 4 Enabled Sensorless homing on my Y-Axis. and a tap. stepper motor resistance so in the end it likely detected something was in the way in time to stop. At the same time, converted to sensorless homing on the X and Y . R is the action to take on detecting I've had this working before for X and Y so I'm wondering if there's a bug with using the probe:virtual_endstop with a tmc_2209_stepper_z:virtual_endstop in the probe section. 3 mainboard with TMC2209 stepper drivers and sensorless homing. TCM2130: from -64. S is the stall detection threshold which should be between -127 and +127. It was well packaged in a plain cardboard box. 6. cfg is not needed Be sure to check our Knowledge Base and in particular this and this post Describe your issue: I have Sensorless homing turned on with Voron tap, and Mar 21, 2023 · _____:: Install TMC 2209 on Manta M4P with Sensorless homing ::_____TMC 2209 driver is an ultra-quiet two-phase s DIAG(Sensorless Homing) of TMC Driver¶ As shown in the figure, plug the jumper cap when using the Sensorless Homing function, and leave it unplugged when it is not used. Once that happens, the stepper motor loses steps. Playlist for BTT Mantahttps: Dec 4, 2022 · Installing BigTreeTech's EEB36 v1. 1 F429 Version. So vcc, gnd, and signal. BTT Octopus v1. General Discussion. Jun 26, 2020 · X and Y homing works now and was working earlier. 3D printers have come a long way over the past several years, but the process of bed leveling remains a pain point. 0b1 on a Duet 3 Mini5+. I wasn't able to reset the triggered status. History. As StallGuard2 needs a certain velocity to work (as set by TCOOLTHRS), make sure that the start point is far enough away from the hard stop to provide the distance required for the acceleration phase. Jun 18, 2024 · The S, H and R values will probably need tweaking for your system. 4R I am trying t make sensorless homing. On the coloured pin out document for octopus pro i found out what i guess is diagpin Nov 12, 2023 · Homing with StallGuard2 The homing of a linear drive requires moving the motor into the direction of a hard stop. It is a good idea to create a macro to home the axis and immediately move the carriage away from the end of the rail. When homing x and y the aboslut x and Y on the toolhead klipper screen gives -150 for just a moment, and then 300. # E3 v2. I've been happy with Chaotic Labs variant of Tap thus far. On the second try only one axis (delta-printer) did home. M8P v2 Sensorless Homing Initial Startup & Tuning. The hotend fan is connected to the E1 heater output (P2_04) DarekNorway • 02/05/2021 at 17:32 • 0 Comments. See a high resolution photo here. # WARNING. Reduce your homing_speed to 25. Modifiy your printer. Sensorless homing and stall detection is functional for all TMC2209’s, TMC2226’s and TMC5160’s and is supported on the BTT Octopus v1. cfg. 5 HC0. Klipper configuration for Voron 2. Instead, the carriage on the axis is moved into the mechanical limit making the stepper motor lose steps. I implemented the homing_override like stated in the documentation for sensorless homing but I can't get Tap to home z in the middle of the build plate. Let’s take a look at the different ways the so while sensorless homing works 99. Feb 16, 2019 · As a test I tried the "default" homing without [homing_override] but this showed the same result. Sep 24, 2018 · FHeilmann commented on Sep 25, 2018. 1 TMC2209 UART with Sensorless homing. 0 on the SKR 1. 000 4. As always the Duet wiki pages provide a lot of information that may also be of help. 2. Use this command to set the bump sensitivity for the X, Y, and Z stepper drivers. I am assuming it is the interaction with the BTT TMC5160 Pro drivers (SPI Mode) as i have read that the sensorless homing pin prevents the endstops triggering. I tried cranking the sensitivity all the way up to 255 but it still wouldn't stop at all. V2 Question. Sensorless homing only works at certain minimum speeds and requires a well tuned SGT value, which drifts with temperature changes in the driver. Jun 18, 2024 · Overview. See User manaul: Stall detection and sensorless homing for details. Install a 3DFused X/Z axis Linear rail kit (single piece X gantry, X axis Nov 8, 2023 · Today we will enable sensorless homing on our core XY printer using Klipper. 1 on a Voron 2. What i did - merged configs and updated to new (todays) bugfix and now Z-axis homing does not work anymore. 2 canbus board with the OptoTap V2, and I'm hoping you guys can help me with the TAP sensor wiring. V2. I've gone through the sensorless setup instructions with a Something about sensorless homing leaves me a little leery of it. # To override settings from this file, you can copy and paste the relevant # sections into your printer. But make sure to unpower the printer first! sensorless-homing. But whatever X_STALL_SENSITIVITY I set doesn't change anything (Homing appear to happen straight away without any movement (But it does move back and forward 5mm thanks to my bump Aside from that, if you see a problem other than the sensor less homing, it would be great to receive additional help for that. Basically, the controller is intentionally crashing the carriage against the frame and waiting to see the power demand from the stepper spike, then using that spike as the homing sensor. 1 toolhead. The toolhead bed has load sensors (that's how it can auto-calibrate a perfect first layer among other things) and the axis use sensorless homing i. Jan 8, 2023 · Overview. 8 degree motors and 400 for 0. Voron 2. 0, Voron Tap, CPAP cooling, sensorless homing and filament cutting on my Voron Trident. Searched the code in the printer config file but found nothign containing -10. You do not need to add sensorless homing macros, I built them in. Best guess, the one time it worked, it had hit the side at something slower than the homing speed, but faster than the original homing Feb 12, 2023 · Cut my belts on the short side, but they fit. . From what I understand sensorless homing detects increased current load when the steppers experience increased effort when the bed or print head reaches the end of the axis, sets this as 0 and moves on. 2 uses sensorless homing and therefore this port is not connected in the build. Playlist for BTT Mantahttps://youtube. Sensorless homing requires drivers like the TMC2209 and a compatible mainboard which can relay the sensing of the stall back to the marlin firmware. 4 Playlist:https://youtube. Find the line of Gcode starting with M914. If you want to use sensorless homing on Z and run the nozzle into the bed then yes, the X and Y probe offsets would be 0. R is the action to take on detecting a stall. i prefer less wires and think the risk is manageable if you are adverse to situations where homing might fail then microswitches are more robust. I built a custom Core XY machine and using TMC 2226 drivers with the sensorless homing feature. 99% of the time i generally dont kick it off without at least watchy xy and z home before walking away. Nothing helped. # tune this once it's working. NOTE: If you select this function, you cannot use external ENDSTOP！！！ Connection with RGB color Lights¶ Connection with BLtouch¶ Connection with Proximity switch¶ Connection with Proximity switch, Select the type of proximity switch as PNP or NPN by Feb 24, 2019 · I've noticed that having a non-zero homing_retract_dist setting on an axis (such as the default 5mm) makes homing susceptible to still triggered errors like: "Endstop x still triggered after retract". Thank you. Value Ranges: TMC2208: from 0. Not really, with bump homing disabled on Z (a must for sensorless mode) and sensitivity set right, the motor will not lose a step. 2 - Sensorless homing. Y axis sensorless homing does not work, but the x axis works fine. • • Edited. on my 2. V0. The BLTouch is connected to the 'SERVOS' and 'Probe' ports on the motherboard, rather than the Z-Stop connector. Blame. 2 board. Y axis - Sensorless (TMC2209 Stepper Motor Driver Virtual Endstop) Z axis - Inductive Probe. 00:00 Introduction01:29 Hardware07:19 Firmware Setup14:02 Calibration23:44 Impro Sep 23, 2022 · Many people successfully use sensorless homing on corexy with Klipper. Nov 24, 2022 · This is a simple tutorial on how to install the TMC2209 with sensorless homing on Klipper with Fluidd. Funssor 1pcs Voron 2. 1 cant get sensorless homing to work. On the EBB36/40, there is a 5 wire endstop connector, with labelled pins +5V, GND, PB6, PB5, and PB7. That is a little different. 3 mainboard with TMC2209 stepper drivers and sensorless homing into a DIY 3D printer, in this Apr 27, 2023 · Basic Information: Printer Model: Voron 2. How can I do that? Configuration: [homing_override] axes: xyz gcode: {% set home_all = 'X' not in params and 'Y' not in params and 'Z' not in params %} Navigate to Configuration --> Advanced Settings --> TCM Drivers --> Sensorless Homing and raise the value for the axis that needs it. Fysetc playlis Sensorless homing function¶ The jump caps are connected to corresponding axis as show. If it crashes when reaching 0, add 10 to the value Mar 23, 2024 · This is such a fascinating design; I truly think it will be the future of TAP. 9 degree motors. Julio February 7, 2023, 8:39am 4. Re: Marlin 2. Driver Voltage Selection¶ Install the Core Board via BTB Connection¶ M8P+CM4: Pay attention to the direction, as shown below. The DIAG pin has been cut off the Z axis' TMC2209 to allow for homing using the BLTouch. Pasting your printer. 000 10. when the current reaches a certain threshold is means that the stepper has reached an obstacle (the end of the axis). I have followed the voron manual, but still have issues. MPX Wiki @2020-2024 Apr 27, 2024 · Homing works in hot and cold state (when hot bed 110, nozzle 240, chamber temp about 50C ) BUT When I start a print, it heats as expected and when it comes to start the print it fails with: "Move out of range: -0. # STM32F103 with a "28KiB bootloader" and USB communication. 0 = no action (default), 1 = just report it, 2 = pause Saved searches Use saved searches to filter your results more quickly The default configurations are made to work with sensorless homing, and are largely preconfigured. the big upgrades I have been working on so far are: Installing a new BTT SKR Mini E3 V3 to replace the CR 4. 4 3d printer board. When you are homing, for some reason it triggers too early, then you run the risk of crashing your toolhead into the bed causing damage. To use this config, the firmware should be compiled for the. Everything runs fine together without endstop switches. On the SKR this is done through the two additional DIAG pins the TMC2209 step sticks and the 2 addtional pins on the SKR board. My X-endstop broke, so figured why not use the sensorless homing feature I have. Sensorless homing is a Klipper feature where it moves the carriage and bed until they hit the frame of the printer. Please help. 4 with ebb toolhead, octopus v1. The stepper driver senses the lost steps and indicates this to the controlling MCU (Klipper) by toggling a pin. I have printed it and am impressed with how well it works! However, I noticed that there is an interference with the belt clips before the end of MGN12C carri Setting Up and Calibrating Sensorless XY Homing . The Klipper project has a page with documentation and recommendations on getting it working. H is typically 200 for 1. 4 300 mm with BTT Octopus, BTT SB2240, Voron Tap, sensorless homing. Homing of X is done by moving the carriage in only the x direction (both the “x+y” and “x-y” steppers move). There were also situations where the endstops was triggered to early and crashed the head into the bed - or next to the Z endstop. I used Mellow CAN for the toolhead and Octopus bridge mode for the controller. 4 Turbo w/ TMC2209 sensorless homing not working on y axis. 000 figures. 000]" Followed by an abort. e. cfg and change it there. #1. com/playlist?list SKR mini E3 V1. The 14pin umbilical cable can be plugged in at the very end of the printer build. They work as intended and reliable. Aug 31, 2022 · General Discussion. log (7. Registered: 6 years ago. 57 lines (43 loc) · 1. Find the number after the axis you're trying to tune. The stepper driver senses those lost steps which Klipper can then use to know that it has hit the end of the axis. Other than that, it works the same way as a limit switch. However, I would highly discourage you from trying to use sensorless homing on Z. So sensorless homing dont work, it dont sense when is on end of course. +63. When using the TMC2130 / TMC2209 / TMC2660 / TMC5160 drivers, the StallGuard feature makes it possible to set up sensorless homing on the X and Y axes for CoreXY machines. 1 and U2C v1. driver_SGTHRS: 120 # tune this once it's working. 0 + Raspberry Pi4 8GB + Octoprint + Octopi + Klipper. Also, Mar 16, 2021 · Is your feature request related to a problem? Please describe. com/playlist? Dec 14, 2022 · I'm using an EBB36 V1. - LeonRein/siegfried_config Jan 19, 2023 · Sensorless homing is an alternative method that a 3D printer can utilize to home the axes, where the position information comes from the stepper motor losing steps as a result of the physical boundaries of the axis being reached instead of endstops supplying this information. Barely. SKR mini E3 v2. Its my firsttime doing the setup/config with klipper/fluidd and the printer has not been running with this board before. The main benefit is less parts that can break, but the stepper drivers are more expensive. 000 175. However I'm not sure if this is the way to do it, but homing Y works with this setup. I have made the following discovery. X axis - Microswitch Endstop. Aug 30, 2023 · I spent all afternoon trying to get the X and Y working for sensorless homing and it seems like I got it to work with SGTHRS values of 75 and 65 respectively for both X and Y however, after the TAP wire was installed and some of the configs for TAP were done, my X and Y sensorless homing no longer seems to work. Jul 6, 2021 · This is a brief tutorial on how to connect on BTT Octopus v1. 1 klippy. Mar 30, 2023 · Reduce your run_current when homing to 0. You'll need to modify the endstop_pin values for [stepper_x] and [stepper_y], by adding a pullup ^, moving the current value into the relevant TMC blocks, and updating the endstop_pins to use the virtual_endstop as described in the following sections. 1 playlist link:https://youtube. Once you’ve done that, test the sensorless homing for the X & Y axis separately and determine the best driver_sgthrs by running the axis homing twice until it works reliably both times. Hello, my name is Daniel, welcome to the CrossLink channel. DO NOT EDIT THIS FILE. In this video, I show you how to configure Marlin 2. Save configuration after you're done. x and earlier, instead of 'Switch', you will have the option to select either 'Active high (NC - Normally Closed)' or 'Active low (N0 - Normally Open)' switch types. com/playlis Aug 7, 2022 · General Discussion. Remove any jumpers not shown in the photo. Common recommendation is between 68 and 75 or even higher. In this video, I show you how to install the Bigtreetech SKR 1. May 21, 2021 · This is a brief tutorial on how to install TMC2209 UART with Sensor less homing on a MKS sGen L v2. 1. Unboxing Mellow CNC Tap. It isn’t recommended to use TMC sensorless homing for Z-endstop, also to that, it isn’t recommended to set this value to zero. log klippy. As always the Duet wiki pages provide a lot of information that may G28 P -> Tap (P for Probe) G28 E -> Endstop (E for Endstop) The homing override calls some macros which should work for sensorless homing and normal sensor homing. log file. Said screw it and built the TAP kit (thus the super glue, and mostly because it provided a little extra belt length margin) and got it attached before calling it a night. In addition, make sure the Y_DIAG jumper is installed on the SKR. The bed does not stop moving along the y axis when homing. See here for setting your klipper configuration for sensorless homing. Set your driver_sgthrs to 64. They will destroy the couplers before they skip. After two weeks of fighting around with sensorless homing, it bugged me so much that I switched back to using the traditional microswitch endstops. Hey all, I have been in the process of waiting on some cool parts and making upgrades to my Ender 3 V2 printer. Moving forward, we will be examining sensorless homing in greater Sensorless homing is when the motor stalls at the end of it's travel. 0. Ender 3 SKR 1. Sorry. I am trying to make senosrless homing work. You have to remove [safe_z_home] if defined in your config [homing_override] is included in the Auto Member. I have tmc2208s and use microswitch endstops. when I use the default homing speeds such as 50x60, 50x60 axises bump at the e Jan 27, 2020 · For the first time sensorless homing worked,but. Print these immediately¶ May 29, 2020 · Marlin 2. You need the axis to hit the gantry with only a tap instead of ramming into it. My machine is mostly standard with a stealthburner toolhead and it uses tap. Dec 26, 2021 · Sensorless homing test on RatOS (Mainsail skin). I wanted to show how to setup Klipper Sensorless Homing configuration for the TMC 5160 Pro drivers on BTT Manta M8P for my Custom 3D Printer. 0 3d printer board. printer. 000 [0. I have the diag pins connected on the first 2 diag pins. Inside is a Mellow Newsletter that highlights their products, a handy ruler, Opto-Tap 5-24V and the CNC Tap assembly. SKR 1. 1 - TMC2209. Inside the product newsletter Handy ruler with useful features Octotap and wiring came packaged separately in a plastic box. Sensorless Homing¶ Sensorless homing allows to home an axis without the need for a physical limit switch. The jumpers used in the photo are green for illustrative purposes only. x sensorless probing and probes variables. I have the BTT TMC2209 steppers and have used them before for sensorless homing on X and Y so I know they work. BLTouch is 40 mm to the left and 2 mm below the nozzle when deployed. In OpenPnP, navigate to Machine Setup > Drivers > GcodeDriver > Setting: CONNECT_COMMAND. Jul 19, 2023 · This is a simple tutorial on how to setup TMC2209 with an endstop and sensorless homing on Manta M8P in Klipper using MainsailOS. This is not used as you can either use the TAP sensor on the X access; or use sensorless homing (still use the Y sensor board, but only for the temp sensing built into it, not the Y sensor itself-if using sensorless homing only). The Tap just looks like a virtual endstop to Klipper and doesn't interact with other endstops. Connect to your machine. Posts: 265. Chris Riley suggested lowering the bump or turning it off as it's a bit harsh. Jan 30, 2021 · This is a brief tutorial on how to install TMC2209 UART with Sensor less homing on a SKR v1. 5A. I want to use sensorless homing on my x and y. 94 KB. The closest I found was the crown cooler github but this did not support cutting and the cpap cooling was restricted so I started my own design. Sep 8, 2020 · For sensorless homing, the motors need to skip. May 27, 2024 · When using the TMC2130 / TMC2209 / TMC2660 / TMC5160 drivers, the StallGuard feature makes it possible to set up sensorless homing on the X and Y axes for CoreXY machines. Getting stall detection working can be tricky and sensorless homing will almost certainly require some tuning. Jan 19, 2024 · Sensorless Homing - BTT Octopus Pro - TMC5160. 4 w/Tap and Sensorless homing MCU / Printerboard: Octopusv1. A query_endstops showed that two of the three endstops stay triggered. Hi, im trying to config my Corexy with BTT octopus pro, tmc2226 for sensorless homing. Tobbie August 7, 2022, 1:39pm 1. Looks like sensorless only works on stealthchop (lowspeed), and my threshold was set to 100mm/s. Sensorless homing and stall detection is functional for all TMC2209’s, TMC2226’s and TMC5160’s and is supported on the Troodon V2 Printer. Guess I'll start with TAP and sensorless homing after all. 3 with TMC2209 and sensorless homing. 255. Check the Klipp Jan 2, 2023 · I use Tap and sensorless homing. Tip: This port has a wider sensitivity range than the duet version of RRF (which is -64 to +64). # This file contains common pin mappings for the BIGTREETECH SKR mini. This is a basic tutorial on how to configure the TMC2209 with sensorless homing on the SKR 3 board. Light. It can also be unplugged any time you need to perform maintenance on the toolhead. com/playlist?list=PLP-V This is a basic tutorial on how to setup TMC2209 with UART using sensorless homing and controller fan to cool steppers on a Fysetc Spider v1. You can start from "Finding the right StallGuard threshold". It is a good idea for the macro to pause at least 2 Jan 24, 2024 · Hello, I am getting so close, the X and Y axis seems to be homing fine but the Z keeps saying out of range 10. I've added the jumper wires from the DIAG pins to PC0 & PC1. TMC2209 reports back the current used by the stepper. cfg with the following code to enable sensorless homing：. 4 3D Printer Crydom D2425 (25A) SSR FYSETC Voron Tap Kit V1/V2OptoTap PCB with OPB Sensor Impressora 3D Printer Part for V2 Voron Trident MGN9 Rail Carriage 3D Printer Parts Hotend Heating Element 12V 24V 50W High Temperature Heating Tube 6*20mm MK8 E3dV6 Volcano Heater Cartridge The reason Voron doesn't use sensorless homing is because they use a pin for the z-endstop (not a concern if running TAP). Setting Up and Calibrating Sensorless XY Homing . Ensure that your sensitivity numbers are high enough that you do not damage the printer, but low enough that the machine Sensorless Homing¶ Sensorless homing allows to home an axis without the need for a physical limit switch. com/playlist?list=PLP-VDZmS6bFo6qyPS8MyBFKqepQHpjCE Sep 16, 2023 · Leonti September 16, 2023, 3:46am 1. View attachment 924. I bought my TMC2209s mainly because they make the printer so much quieter and not they enable sensorless homing. The X-STOP port is used for the V0. 5. My thoughts exactly. Further, sensorless homing is only accurate within 1 full step, which, depending on your steps/mm can be somewhat significant. Jan 31, 2020 · @GadgetAngel of course my endstop will not trigger, couse' Im using sensorless homing! But when I home any axis, the stallguard dont stop the axis when hit the corner, my machine keeps pushing the axis through the corner even when gets stuck. I connected bltouch to board and Z-axis homing was working fine on earlier firmware version, i printed many small prints with it and i'm sure it was working as expected without any pins cut. 4. TMC 2209 drivers, E3D High Torque stepper motors, Big Tree Tech SKR Pro v1. ¶ The Raspberry Pi Sort by: Planetix. 0 for the SKR 1. Sensorless homing isn’t a good idea here. View attachment 926. Course, crash makes it sound a lot more violent than it actually is, but still, the idea that Feb 6, 2023 · No, the endstops are 3 wire boards (supplied with kit from ratrig) not just a microswitch. Install a jumper on the Y DIAG pin, this will enable sensorless homing on the Y axis (bed). Playlist for SKR 3:https://youtube. 4r2 with CW2 and Stealthburner. Sep 12, 2021 · After sensorless homing completes the carriage will be pressed against the end of the rail and the stepper will exert a force on the frame until the carriage is moved away. I tried restart, restart_firmware, powercycle, unplugging the diag1 pin. 5: 2231: January 7, 2024 Sensorless homing not working - BTT Octopus V1. Cannot retrieve latest commit at this time. Aug 30, 2021 · Donald Papp. I'm trying to set up sensorless homing for a SKR mini E3 V1. Apr 30, 2021 · This is a brief tutorial on how to setup the TMC2226 UART on the SKR 1. Consult your mainboard documentation and step Jun 18, 2024 · H is typically 200 for 1. Nov 13, 2022 · So I went sensorless homing as well. I confirmed all 4 z motors are moving in the correct direction as are my a/b motors. Almost there with my settings, I am now trying to find a “non macro” solution to this issue: I am using sensorless homing, so homing_retract_dist is not an option, now, when Homing XY or Homing All, I would like the X axis to move by 10-15mm after “hitting” the virtual endstop, to prevent him of flirting with the Z Dec 28, 2022 · Got the sensorless homing tuned in, and the new macros made for VT842Running RepRapFirmware 3. 000]. Hardware Configuration. Oct 11, 2023 · The following command sequence and homing diagram show an example of hard-stop homing to an index pulse using the new Hard Stop Homing command with a parameter of 1 (HS1): HA1100 HL1100 HA2100 HL2100 HA3100 HL3100 HV15 HV25 HV30. One Time Tips, You Can PayPal Me:https: Sensorless homing sensitivity is set using the M914 Gcode command. Code. If configuring for RRF 2. BTT SKR mini E3 V2. Regular endstops can be used with Z and a screw for adjustment. Although both steppers move when homing the X carriage, for code implementation reasons, only the “ [stepper_x]” tmc driver is used to sense the contact. As I'm on a CoreXY i connected the diag1 pin of the X and the Y dirver together to all four endstop pins (X+, X-, Y+, Y-), which worked fine with Marlin. 9 MB) Fill out above information and in all cases attach your klippy. These are based on the recommended sensorless homing macros by the Voron team. Our mission is to help 1 million people getting more successful with 3d printing and if you This feature is so sensitive that it can actually take the place of traditional endstops. 4 with octopus v1. Apr 23, 2023 · [homing_override] 轴： Z set_position_z： 0 gcode： G90 G0 Z15 F600 G28 X Y ## Z 限位开关的 XY 位置 ##通过后将X0和Y0更新为你的值（如X157、Y305） ## Z 轴限位位置定义 G0 X206 Y300 F3600 Jan 16, 2022 · Ohh! You are talking about Z-endstop. M8P+CB1: Pay attention to the direction, as Apr 23, 2023 · Update: I’d updated the homing speed to 100mm/s earlier because I saw the vorons homing at a pretty high rate. Voron Switchwire - Y-axis Sensorless Homing - TMC2209, G28. Aug 28, 2023 · TeamFDM. The next step is tuning the your sensorless homing setup, please read this guide. August 30, 2021. Jan 21, 2024. View attachment 925. October 23, 2019 01:45PM. 5 HO25000 HS1 In the example above, the search for the mechanical end-stop begins once the HS1 command is executed. For more information, check out Marlin's M914 documentation. As far as I understand the “sensorless homing” feature of TMC2209 drivers works like this: stepper moves towards 0 in X or Y direction. Apr 27, 2024 · I needed a hotend that supported the following: Phaetus Rapido UHF, Orbiter 2. You want your sensor to trigger with the tool head NOT hitting the bed. ac hx eu ij ep de il zh iw yt