Your Comprehensive Guide to Marlin PID Auto-Tune

If you’re using a 3D printer, you might have heard of the term “PID autotune” when it comes to tuning your printer’s temperature. This process helps ensure that your printer is running at the appropriate temperature, helping to optimize the quality of your prints. Marlin is a popular firmware for 3D printers, and it offers a PID autotune feature that allows you to fine-tune your printer easily.

In this guide, we’ll walk you through the steps you need to take to complete Marlin’s PID autotune process and ensure that your printer is running smoothly.

1. Enter Command

The first step is to open up your Marlin firmware and enter the command M303 E0 S200 C8. The E0 indicates the extruder you want to tune and the S200 indicates the temperature you want to stabilize. The C8 denotes the number of cycles you want the tuner to perform. You can adjust these values to match your printer’s specifications, but it’s best to start with these defaults while you’re learning.

2. Monitor the Temperature

As soon as you’ve entered the command, Marlin will start heating up your extruder. It’s important to keep an eye on the temperature readings throughout the process. As the temperature changes, Marlin will record the data and create a graph, which you’ll use to complete the tuning.

3. Fine-Tune the Settings

After Marlin completes running through the specified number of cycles, it will display a list of optimal PID values. These are the values that you should use to fine-tune your printer’s temperature settings. These values will be very close to the right settings, and you can try tweaking the settings to find the perfect combination. You can enter these values into your firmware directly or use the many online tools available to adjust them.

4. Save the PID Settings

Once you’ve adjusted the settings, it’s important to save them in your firmware. An easy approach is to open Configuration_adv.h and locate the PID settings. Replace the existing values with the optimal values that you found in Step 3 and save the file.

5. Test Your Printer

You’re now ready to test your printer’s temperature settings. Start by printing a calibration piece and check the results. If the print is not satisfactory, you can make a small adjustment to the PID settings and repeat the process.


PID tuning is a great way to optimize the temperature setting of your 3D printer. Marlin’s PID autotune process makes the whole thing very simple and straightforward. By following the above steps, you can get the perfect result for your printer in no time.

With these tips, we hope that you can optimize the temperature settings of your printer and enjoy high-quality prints without any trouble.

Tyler Woodward

Tyler Woodward

Hi, I'm Tyler! I'm a passionate writer and believer in the potential of 3D printing technology. With my background in engineering and design, I bring an exciting mix of creativity and technical expertise to my writing. In addition, I pride myself on staying up to date with the latest trends in the industry.

We will be happy to hear your thoughts

Leave a reply

3D Printing Fox