Use sensorless homing in your own projects!

In this video, I’ll show you how to set up sensorless homing using a TMC2209 stepper driver — no mechanical limit switches required! Perfect for 3D printers, CNC machines, robotics, and other DIY electronics projects. I’ll guide you through the wiring, Arduino code, and how to tune StallGuard for accurate, reliable homing. Whether you’re building a CoreXY, a custom motion control system, or just want to learn more about stepper motor drivers, this is a great place to start. Let’s build smarter!

List of items used in this project and where to find them:

■ Waveshare RP2040-Zero: https://geni.us/Waveshare-RP2040Zero

■ Mini560 DC-DC Buck Converter 5v: https://geni.us/Mini560

■ BIGTREETECH TMC2209 V1.3: https://geni.us/TMC2209

vMomentary Button: https://geni.us/6x6TactileButton

■ 1k Resistor: https://geni.us/Ufa2s

■ Sliding Switch: https://geni.us/SlideSwitchSPDT

■ Screw Terminal PCB Mount 5mm pitch: https://geni.us/PCBScrewTerminals

■ Headers and Pins: https://geni.us/HeadersAndPins

■ 3D Printer Filament: https://www.3djake.uk

■ Some M3x8 bolts: https://geni.us/NutsAndBolts

■ 12v Power Supply (2 amp+): https://geni.us/12VPowerSupply2A

The V3 PCB has been updated to also include a 35v 100uF Low ESR Capacitor (under the stepper driver) and a Diode (1N5819) to prevent the USB port from trying to power the stepper driver.

■ Andrea's Code: https://github.com/AndreaFavero71/stepper_sensorless_homing

■ MicroPython 1.24.1: https://micropython.org/download/PIMORONI_TINY2040/

■ Thonny Python IDE: https://thonny.org

Get Kit of parts from Etsy to build your own: https://diymachines.etsy.com/uk/listing/4326334730/sensorless-homing-electronics-kit

■ Projects PCB: https://www.pcbway.com/project/shareproject/Sensorless_Homing_in_Python_RP2040_TMC2209_dae5adca.html

INSTAGRAM: https://www.instagram.com/diy_machines

FACEBOOK: https://www.facebook.com/diymachines/

ETSY: https://www.etsy.com/uk/shop/DIYMachines

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List of camera and lighting equipment I use:

Sony A7 III: https://geni.us/Sony-Alpha7-III

Tamron 28-75mm F2.8 RXD A036SF Lens for Sony-FE : https://geni.us/TamronRXD-28-75mm

Aputure Amaran HR672C: https://geni.us/AputureAmaranHR672C

Aputure MC: https://geni.us/FAPGL

RØDE VideoMic Pro+: https://geni.us/RodeVideoMic-ProPlus

Philips Hue Lightstrip Plus: https://geni.us/PhilipsHue-LightStrip

Disclaimer:

This video is shared for demonstration purposes only.