Now we will set the Y axis belt tension.

To accurately and consistently set the Y belt tension, we will make the belt vibrate to make a sound (or note). We will then tune this sound (or note) to a particular frequency, just as you would when tuning a guitar (or other stringed instrument). To help us do this, we will use a smartphone application.

Download and install the Pano Tuner application (developed by Kaleloft LLC) on your smartphone.

Android Google Play link.

Apple Store link.

Launch the Pano Tuner app and place your smartphone under the heated bed. Make sure there is no noise in the room that could disrupt the measurement (like a ceiling fan).