Ender-3 V2 CR Touch Firmware: A Comprehensive Review and Comparison

How to Download and Install CR Touch Firmware on Ender 3 V2

If you have an Ender 3 V2 printer, you might have heard of CR Touch, an automatic bed leveling sensor that can make your printing experience easier and more enjoyable. But how do you install CR Touch on your printer? And how do you update the firmware to make it work properly?

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In this article, we will show you how to download and install CR Touch firmware on Ender 3 V2 in five simple steps. We will also explain what firmware is, why it is important to update it, and what benefits CR Touch can bring to your Ender 3 V2.

Step 1: Check your mainboard version and firmware version

The first thing you need to do before installing CR Touch firmware on Ender 3 V2 is to check your mainboard version and firmware version. This is because different mainboard versions require different firmware files, and you need to make sure you have the latest firmware version for your printer.

To check your mainboard version, you need to open up the electronics case at the bottom of your printer. To do this, remove the one screw on top of the case and the three screws at the bottom. Be careful not to damage any wires or components inside. Then, look at the mainboard and find the version number printed on it. It should be either 4.2.2 or 4.2.7.

To check your firmware version, you need to look at the printer's screen. Navigate to the Info screen using the dial knob, and you will see the current firmware version number displayed at the bottom right corner. It should start with "Ender-3 V2" followed by some numbers.

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Step 2: Download the compatible firmware file from Creality or another source

Once you know your mainboard version and firmware version, you can download the compatible firmware file for your printer. You can get it from Creality's official website or from another source that provides custom firmware for Ender 3 V2.

To download from Creality's website, go to and select the firmware file that matches your mainboard version and CR Touch model. For example, if you have a mainboard version 4.2.2 and a CR Touch without an adapter board, you should download "GD-Ender-3HW4.2.2SW2.0 CR Touch Firmware.zip". If you have a different mainboard version or CR Touch model, choose the corresponding file. Then, click on the download button and save the file to your computer.

To download from another source, you can search online for custom firmware for Ender 3 V2 with CR Touch support. Some popular sources are Marlin Firmware, TH3D Unified Firmware, and Smith3D Firmware. Make sure you read the instructions and reviews carefully before downloading and installing any custom firmware, as they may have different features and settings than the official firmware.

After downloading the firmware file, you need to unzip it and copy it to a MicroSD card. The MicroSD card should be formatted to FAT32 and have at least 8GB of storage space. The firmware file should be named "firmware.bin" and placed in the root directory of the card. Do not rename or modify the file in any way.

Step 3: Insert the MicroSD card into the printer and flash the firmware

Now that you have the firmware file ready on your MicroSD card, you can insert it into the printer and flash the firmware. This means that you will overwrite the existing firmware on your mainboard with the new one.

Before inserting or removing the MicroSD card, make sure you switch off and unplug the printer from the power source. This is to prevent any damage or corruption to the mainboard or the card. Then, locate the MicroSD card slot on the mainboard, which is usually next to the USB port. Insert the card into the slot with the metal contacts facing down.

After inserting the card, plug in and turn on the printer. You will see a blue LED light flashing on the mainboard, indicating that the firmware update is in progress. Wait for about 10 seconds until the light stops flashing and turns solid. This means that the firmware update is complete and successful. You can check the new firmware version on the printer's screen by going to the Info screen again.

Step 4: Calibrate the CR Touch sensor and set the Z offset

After flashing the firmware, you need to calibrate the CR Touch sensor and set the Z offset. This is to ensure that the sensor can accurately measure the distance between the nozzle and the bed, and adjust it accordingly for optimal print quality.

To calibrate the CR Touch sensor, you need to use the printer's menu to perform some commands. First, go to Prepare > Auto Home and wait for the printer to home all axes. Then, go to Prepare > Level > Leveling and wait for the printer to probe nine points on the bed. Finally, go to Control > Store Settings and save your settings.

To set the Z offset, you need to use a piece of paper or a feeler gauge as a tool. First, go to Prepare > Move Axis > Z Axis and move the nozzle down until it touches the paper or gauge lightly. Then, go to Control > Motion > Z Offset and adjust it using the dial knob until it shows zero on the screen. Finally, go to Control > Store Settings and save your settings.

To test the CR Touch sensor and fine-tune the Z offset if needed, you can print a test pattern or a calibration cube. You can also use some slicer settings such as Z hop or babystepping to adjust the Z offset during printing.

Step 5: Enjoy the benefits of CR Touch on your Ender 3 V2

Congratulations! You have successfully installed CR Touch firmware on your Ender 3 V2. Now you can enjoy the benefits of CR Touch on your printer.

CR Touch can improve your print quality, reliability, and convenience by automatically leveling your bed before each print. This means that you don't have to worry about manual leveling or uneven bed surfaces anymore. You can also use different bed materials and print settings without affecting your print quality.

CR Touch can also work with different slicers and print settings, such as Cura, PrusaSlicer, Simplify3D, and OctoPrint. You can enable or disable CR Touch in your slicer settings, as well as customize some parameters such as probe points, probe speed, probe height, etc.

If you encounter any issues with CR Touch on your Ender 3 V2, such as false triggering, inaccurate readings, or poor adhesion, you can troubleshoot them by checking some common causes such as wiring connections, sensor position, nozzle cleanliness, bed temperature, etc.

Conclusion

In this article, we have shown you how to download and install CR Touch firmware on Ender 3 V2 in five simple steps. We have also explained what firmware is, why it is important to update it, and what benefits CR Touch can bring to your Ender 3 V2.

We hope that this article has been helpful and informative for you. If you have any questions or feedback, please feel free to leave a comment below. We would love to hear from you and help you with your 3D printing journey.

FAQs

Here are some frequently asked questions about CR Touch firmware on Ender 3 V2:

Q: What is the difference between CR Touch and BL Touch?

A: CR Touch and BL Touch are both automatic bed leveling sensors that use a metal probe to measure the distance between the nozzle and the bed. However, CR Touch is a product of Creality, while BL Touch is a product of Antclabs. CR Touch is designed to be compatible with Creality printers, while BL Touch can work with various printers. CR Touch also has some features that BL Touch does not have, such as a self-test function, a color-changing LED indicator, and a magnetic base.

Q: Do I need to install a bootloader or an adapter board to use CR Touch on Ender 3 V2?

A: No, you do not need to install a bootloader or an adapter board to use CR Touch on Ender 3 V2. The mainboard of Ender 3 V2 already has a bootloader installed, which allows you to flash the firmware using a MicroSD card. The mainboard also has a dedicated port for CR Touch, which eliminates the need for an adapter board. However, depending on your mainboard version and CR Touch model, you may need to use different wiring connections or firmware files.

Q: How do I know if my CR Touch sensor is working properly?

A: You can check if your CR Touch sensor is working properly by performing some tests. First, you can use the self-test function by pressing the button on the sensor for three seconds. The probe should extend and retract twice, and the LED should change colors from red to blue to green. Second, you can use the printer's menu to test the trigger signal by going to Control > Motion > Probe Z Offset. The screen should show "TRIGGERED" when the probe touches something, and "OPEN" when it does not. Third, you can print a test pattern or a calibration cube and check if the first layer is consistent and adheres well to the bed.

Q: How often do I need to update the firmware for CR Touch on Ender 3 V2?

A: You do not need to update the firmware for CR Touch on Ender 3 V2 unless there is a new version available that fixes some bugs or adds some features. You can check for new firmware versions on Creality's website or other sources periodically. However, if you change any hardware or software settings on your printer, such as installing a new nozzle, changing the bed material, or using a different slicer, you may need to recalibrate the CR Touch sensor and reset the Z offset.

Q: Where can I find more information and support for CR Touch on Ender 3 V2?

A: You can find more information and support for CR Touch on Ender 3 V2 from various sources online. Some of them are:

• The official Creality website:

• The official Creality forum:

• The official Creality YouTube channel:

• The official Creality Facebook group:

• The unofficial Reddit community:

• The unofficial Discord server:

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