I have been enjoying 3D printing for a few years now. I picked up an Ender 3 Pro and I was off to the races. As I came to learn, the build plates/beds on entry level printers tend to be, well, not as perfectly level as one would like. I spent tons of time leveling and leveling again, only to have prints, especially larger prints have adhesion issues leading to countless failures and frustrations. I had done some reading on the BLTouch ("BLT") and thought that automatic mesh bed leveling was something that might help. I ordered a 4.2.7 main board and a BLT for a huge upgrade all around! Side note: The 4.2.7 seems unavailable from Skophy at the moment, but it was genuine, functional, and now all I can hear from my printer is the fans, no more WHIRR WHIR WHIRRRRRRRRRRRR from across the house. If you're looking to do the same upgrade, know that you will have to do some work. Creality has yet to release a plug and play firmware for the 4.2.7 board w/ v1.3.1 BLT WITHOUT a riser board/modification. Some people run two of the wires from the BLT to where the z-stop plugs in (when you remove the z-stop switch), older boards require a riser board that adds in a spot to wire in the BLT. I figured, if the new 4.2.7 board has a dedicated 5-pin plug for the BLT's 5-pin plug why not use it? I ended up learning how to compile my own Marlin firmware (which I'm liking much more than Creality's stock firmware), don't worry too much, thanks to the incredible community maintaining and improving Marlin on GitHub, it's really as easy as finding your correct base firmware, and methodically going through the code to change the parameters to match your needs and printer. SUPPORT STORY: After fighting with and troubleshooting every aspect of the new setup, I had determined that I had a bad BLT unit, it was failing auto-homing, and failing at random intervals during mesh bed leveling. Skophy got me a replacement unit, and after swapping it over I've been printing constantly, with WONDERFUL results. I'm now able to use my entire bed, and the printer is much quieter, and my prints are coming out nicer than ever before. I'd recommend to buy your parts from the seller "Skophy", I got genuine parts and fantastic support. I'll be looking to them for other upgrades in the future! The picture shows the order of wires in the 5-pin plug that worked for me. There seems to be some incorrectly wired units from possibly non-genuine sources out there that can burn out components. Be careful, do your research, and you'll be just fine!

After a couple hours of trouble shooting, research, and tuning, this thing works great. In order to possibly save others some time and hassle I figured I would write a review which hopefully some might actually find helpful instead of simply stating it works great, you need this firmware from an unspecified place, or simply stating the product is garbage because all things 3D printer wise should be plug in and done. I installed the sensor to an Ender 3 v2 with a stock v4.2.2 board. First I installed the hardware using the correct mount for the printer of course. The rest is straight forward on the v4.2.2 board and I would assume it would be on the v4.2.7 board as well. First remove the existing z axis limit switch from the printer then unplug it from the main board. Next plug in the supplied BLTouch wiring harness as described in the included instructions. The plug is located next to the LCD plug on these board revisions. Now as far as firmware goes... I use only Creality boards on my Creality printers. If you are using a third party board your experiences with finding the correct firmware may differ. Guess it depends on if the 3rd party maker compiled firmware supporting a BLTouch or not or if you have the knowhow to compile your own. For me using Creality boards it was as simple as following the instructions and downloading the latest firmware from the OFFICIAL CREALITY WEBSITE for the specific board compiled for with BLTouch support while ignoring all other "recommendation" in these reviews as well as elsewhere. I did read one review stating the display needed to be flashed as well however I did not have to flash the display. I only had to flash the board by simply downloading the correct firmware for the board revision in question and extracting the .bin file for this hardware found in the Creality Ender 3 V2 v4.2.2 firmware .zip archive named "Marlin2.0.1 BLtouch Non-adapter board firmware" to a blank SD card then booting up the printer with the SD card in it. Setup... Setup took a bit more time then I expect due to some tail chasing trying to solve an issue which if I only read the actual BLTouch manual I would have had fixed in a much shorter time which I will cover later in this review. However, setting up the next printer should take about as long as manually leveling a bed and much much easier with most of the time being spent waiting for things to rehome between adjustments. I don't know why people posting reviews here found it so hard to adjust the z offset finding themselves spending hours doing so being it involves simply spinning and pressing a dial until its right. My issue... I did have an issue after installation on my Ender 3 V2. After beginning a print occasionally while either homing or leveling the BLTouch would lower to sense the bed then begin flashing red stating "STOP called because of BLTouch error - restart with M999" this was the majority of the time spent setting up my first printer. Troubleshooting the issue led to making sure the wiring harness for the BLTouch did not come to close to any stepper motors or other sources of electrical interference as well as checking wiring connections. These all looked good on my end but should be checked anyways. The issue for me turned out to be a simple fix. ADJUST THE SCREW AT THE TOP OF THE BLTOUCH. The metal collar wrapped around the top of the plunger can be positioned higher or lower on different plungers and simply adjusting the screw on top of the BLTouch either up or down positioning the metal collar properly in the magnetic field solved the issue. I know RTFM for the BLTouch not just the supplied kit documentation... In closing... As with anything related to 3D printers going into anything expecting it to work perfectly out of the box you will have a bad time. If you are patient and read not only the manual written explaining only how to install the hardware but also the actual BLTouch documentation you will find yourself quite pleased with the results.

As the owner of a business that thrives on the precision and innovation of jewelry making, 3D design, wax carving, and more, I constantly seek technologies that push the boundaries of what's possible. The integration of the Creality BLTouch V3.1 Auto Bed Leveling Sensor Kit into my suite of tools has been nothing short of revolutionary. Compatible with a range of Creality 3D printers, this kit has significantly enhanced the quality and reliability of my 3D printed components. Here’s how the BLTouch has become an indispensable asset in my creative and production processes. **Seamless Integration and Installation:** Adapting new technology into an established workflow can often be daunting. However, the BLTouch kit was designed with ease of integration in mind. Its compatibility with the Ender series and a straightforward installation process meant that incorporating this auto-leveling sensor into my 3D printers was hassle-free, allowing me to focus on creativity rather than technical hurdles. **Unmatched Precision:** The cornerstone of my business is the ability to produce detailed, precise components for jewelry, prototypes, and custom pieces. The BLTouch has elevated the precision of my 3D printing operations to new heights. By ensuring the print bed is perfectly leveled before each print, it has eradicated the trial and error that previously plagued my printing processes, resulting in consistently high-quality prints. **Versatility Across Projects:** Whether I'm working on intricate jewelry designs, detailed prototypes for lost wax casting, or custom components for sand casting, the BLTouch has proven its worth. Its ability to adapt to various printing requirements and materials has made it a versatile tool that supports a wide range of projects, enhancing both the scope and scale of what my business can offer. **Time and Material Efficiency:** Before integrating the BLTouch, manual bed leveling was not only time-consuming but also prone to inaccuracies, leading to wasted materials and extended project timelines. The sensor's precision has dramatically reduced print failures, saving both time and materials. This efficiency has not only improved project turnaround times but also contributed to a more sustainable operation. **Reliability and Support:** One of my initial concerns with integrating new technology is the reliability and availability of support. Creality’s reputation for quality and customer service quickly alleviated these concerns. The BLTouch has performed reliably, and on the few occasions I've needed assistance, support was readily available, ensuring minimal downtime and uninterrupted creativity. **Final Thoughts:** The Creality BLTouch V3.1 Auto Bed Leveling Sensor Kit has been a transformative addition to my business, propelling my 3D printing capabilities into a new era of precision and efficiency. It exemplifies the type of technology that can truly revolutionize a creative operation, offering reliability, precision, and ease of use. For any professional in the fields of jewelry making, 3D design, and beyond, I highly recommend the BLTouch as an investment in the future of your craft. It’s not just a tool; it’s a partner in the pursuit of perfection.

This quick upgrade has made printing SO easy. High quality and no more having to run the bed level routine after every few prints. After you update the firmware from Marlin, there will be a level bed function. I have one note: When the instructions say "Z-Axis", they actually me the Probe Z-Axis. I spent 3 hours fiddling before I figured that out. Also, there is a formula to calculate the offset. I did that, but, in the end I just set it to 1.30 and moved it by 0.5 increments until it barely provided resistance to a sheet of paper (like the manual leveling). Since then, I have adjusted it twice in 2 weeks of constant printing. This upgrade makes my Ender Pro 3 seem like a new printer!

I added this to an Ender 3 v2. Physical installation is a breeze - I didn't even need to remove the cooling shroud. The 'hardest' part is routing the touch cable down to the control board - I opted to push it through the existing cable loom which is a nuisance but that doesn't reflect on the kit itself. Also: don't forget to remove the Z-limit switch! Once installed, installing the firmware was a challenge. I used the link in the install guide but that just led to the machine beeping at me. I tried some others I found elsewhere to no avail. After wasting an hour and digging around in forums I ultimately found one that did work, selected the levelling routine and it worked fine, so minus one mark for vague instructions and firmware grief. The levelling calibration takes a few minutes and once started there's no input needed from user; it's fast enough to run at the start of every print. After levelling and making the small changes in Cura (my slicer of choice) I printed a test print and it worked great. I had recently manually levelled the bed so that might have helped, but overall a cheap upgrade that should eliminate the worst part of owning and using a 3d printer - no more bed levelling!

Things in 3d printing are not quite yet fully plug and play. Had to reverse the wires, that took a bit of fiddling. Once figured out, and the firmware setup, bed levelling can be speeded up a whole bunch with very good repeatability. Remove the z- wire and connection. Split the wires into two sets: black and white one set, the other 3 is set two. Black and white need to be stripped and crimped to female jht-xh pins. The z- endstop plug is 3 pin, you're only using two pins here. Wire colors here: Blue: z- pin, closest to the outside of the board. Red: z- pin, middle of the 3 pins. To the bltouch plug, the wires are (from your left to right) yellow, black, white.

Click to play video Bought this and installed pretty easy, I have a tech background so install on ender 3v2 was easy, got it up and running. Thought it was pretty good, then after about a week of use, now it will hardly ever work. It will pass self test on power up, but when you try to home, it will extend the probe a few times but never move down and eventually just stay blue with probe extended and will not move the z axis down at all. This will happen intermittently, first time, I tried everything it could be and then just randomly it started working again. then 2 days later same thing, now it doesn't work at all 95% of tries, but it will occasionally work long enough to do a auto level once. But since it needs to work for the z limit as well, you can't ever do a print anymore. I cannot find a way to contact seller except to leave this review, I will be trying to return the defective item I guess I will have to use Amazons return and maybe look at some other type of ABL. I have read others that say they setup and never had any other problems, not sure if mine is just defective wiring harness or something that makes it work once in awhile, but this is certainly not saving me any time with leveling and has actually cost me days of printing time which makes me lose far more money than I spent on the device. :(