🎶 Complete Guide to Input Shaping (Resonance Compensation) on Voron 2.4 with Duet 3 + Toolboard + TAP

If you're running a Voron 2.4 with Duet 3 and a Toolboard and want to tune Input Shaping (resonance compensation) using the onboard accelerometer, here's a step-by-step process to get perfect print quality at high speeds! 🚀

✅ What is Input Shaping?

Input Shaping helps:

• Eliminate ringing/ghosting on print walls.
• Compensate for mechanical resonances in belts, motors, and the frame.
• Increase speed and acceleration while keeping quality.

🛠 Requirements:

• Voron 2.4 with Duet 3 6HC/Toolboard combo.
• Toolboard-mounted accelerometer (configured as shown below).
• Latest RepRapFirmware (3.5+ recommended).

✅ Step 1: Make Sure Accelerometer is Set Up

Your config.g should include:

Test connection:

✔️ Should respond: Accelerometer on board 121, SPI channel 0

✅ Step 2: Run Resonance Test Macros

I created two simple macros for you:

These move the toolhead to the center of the bed and run an accelerometer capture. You can download them here.

✅ Step 3: Download and Analyze Data

After each test:

1. Go to DWC (Duet Web Control).
2. Look under Jobs — download .csv file.
3. Analyze file at: https://accelerometer.jyers.dev/ or use Duet Python tools.

✅ Step 4: Set Input Shaping (M593)

Based on analysis (you'll get a graph of resonances):

• Example:
  • Resonance peak found around 45Hz.
  • Set shaper:
    gcode

     

    M593 P"mzv" F45 S0.1


Add this line to config.g.

✅ Step 5: Test and Adjust

Run test print (e.g., speed tower) to check:

• Straight walls.
• No ringing/ghosting.
• Adjust F value (frequency) in M593 as needed and re-test.

✅ Example config.g Line After Tuning:

⚙️ Bonus Tips:

• Once tuned, you can increase accelerations safely:
  gcode

   

  M201 X8000 Y8000 Z350 E2000 ; Example accelerations

• You can also explore other shapers (like ei3, zvdd) if needed.

🔗 Download Pre-Made Macros Here:

👉 Download input_shaping_macros.zip