Index

Why Digital Measurements?

As of January 2026, we have changed the front-end electronics of our load cell printhead to now take digital measurements of the force applied to the hotend. This change has allowed us to take much more precise measurements of the bed during the z-tilt adjustment and bed-mesh calibration.

Do I need to Upgrade?

Starting March 2026, new HS-Pro machines will incorporate the new digital load cell probing method and will not need to be upgraded. If you received your machine prior to March 2026, then your machine is likely utilizing the older style of probing.

Due to the change in electronics, there is a corresponding change in the printhead PCB. Below is a depiction of the Old (left) and New (right) printhead PCBs. The old design has far more electronic components in the bottom left area, whereas the new design has just a few components.

If your machine has the old design, the new design is available on our webstore for a minimal price to encourage upgrading. Order here: Parts and Hardware- Pantheon

Non-Digital (Old)

Open

Digital (New)

Open

What Version of Printhead do you have?

The printhead itself has also been iterated upon since the HS-Pro was first released in May 2025. Below is an image of the three versions currently in circulation where version “2” depicted below is the most up to date. Version “1” is functionally the same as version “2” but needs a different PCB support.

If you have a version “0” printhead, please reach out to us at support@pantheondesign.com for a printhead swap, we are actively removing this version from circulation.

Open

Printhead PCB Carrier

When you receive your upgrade kit for the Printhead, you will be shipped two printed carriers. Verify which version of printhead you have and use the corresponding carrier:

Open

Installation Instructions

Parts Required

Purchase Link: HS-Pro Printhead Digital Load Cell

• Rev 2.0 Printhead PCB (Digital)

• Version “1” or “2” Printed PCB Carrier

• Fasteners

  • 3x M3x22mm Black Oxide Socket Head Screw

  • 1x M3x10mm Stainless Socket Head Screw with lock-washer

Tools Required

• 3.0mm hex bit or key

• 2.5mm hex bit or key

• 2.0mm hex bit or key

• Loctite 242 or 243

Procedure

• Remove the filament in the printhead

• Turn off the machine

• Unplug the printhead’s main connector at the top

• Remove the printhead by loosening the two M4 screws securing it to the gantry

• Unplug all the electrical components on the printhead (blue arrows in image below)

• Loosen the screws securing the PCB in the following order:

  • 5 → 4 → 1 → 2 → 3

  • You may need to counter-torque the opposing screws of 4 and 5 from the other side of the fans

• Remove the old style PCB

Open

• The old (left) and new (right) style PCB carrier is shown below:

Open

• Remove the old style of PCB carrier by removing screws 1, 2, 3 and potentially 4 in the image below, screw 3 fastens the two printed halves together for additional support:

Open

• Install the new PCB carrier, refer to the section above to be sure to use the correct carrier.

  • Loctite all screws

  • Be sure to feed the wires through the window.

• Place the new PCB on the carrier and install the screws in the following order:

  • 5 → 4 → 1 → 2 → 3

  • Place the M3 lock-washer on screw 2

  • You may need to counter-torque the opposing screws of 4 and 5 from the other side of the fans

  • Loctite all screws

Open

• Plug in all the electrical components on the printhead (blue arrows in image below)

  • Be sure to plug the “Part” and “Cold” fans correctly since they have the same connector. The fan directly under the PCB is the “Cold” fan that cools the heat-break.

• Install the printhead onto the machine by tightening the two M4 screws.

• Plug in the printhead’s main connector

• Turn on the machine

• Open up the web-console and navigate to the “MACHINE” tab

• Open up your “features.yml” file that manages the configuration of your machine.

• In the “hardware” section, edit the following line to tell your machine of the recent hardware change:

• Click the “Save and Restart” button on the top right after editing the “features.yml” and you’ll be prompted to generate your printer.cfg file. This is when all the corresponding printer.cfg configuration changes will be made to match the new PCB.

Open

• The web-console will restart and the machine should be ready to go.