BIGTREETECH SKR 3 EZ Control Board 32bit New Upgrade Silent Board Support EZ2209/ EZ5160/ EZ2130 Stepper Driver Compatible TFT Series Touch Screen, DIY for Most FDM 3D Printer (with 5PCS EZ2209)

There is a lot to say about this board as I have been a BTT supporter for awhile with their SKR Mini e3 boards as well as their TFT screens. Since this was not as "plug and play" there were some learning curves, but nothing that was very difficult to figure out. Here are some of my highlights and lowlights from my experience with this boardPros:EZ Drivers:It's in the name. These are literally just plug in and they work. No more moving pins or plugging things in backwards. They go in one way and make driver installation completely fool proof. The TMC2209 drivers do allow for sensor less homing, but I chose not to enable that on this board and just use endstops and firmware limits for my bed size. They are completely silent so you don't have to worry about any noise coming from the printer which is as to be suspected with the TMC2209s. This board also has 5 independent drivers so you can run G34 Auto Align on your dual lead screws which is a gamechanger for leveling and accuracy.Fan Control:3 controllable fans on this board is a great option so you don't always have to have fans running when the printer is idle. All my fans are 24v so there was no need for me to utilize the different voltage but having that option is very welcome!Control Board:32-bit ARM Cortex-M7 board is almost overkill, but that's fine by me. For my needs, it will never have any issues and will process whatever, whenever I need it to.CONSFirmware:If you are not familiar with compiling your own firmware, you will not find precompiled versions for this board as readily available as you may think. I'm sure over time there will be plenty out there but if you are not comfortable creating your own firmware you may want to do a little research or be prepared to learn. This is not as plug and play as the SKR Mini E3 boards.Quality Control:I don't know where to put this one, but the first board I received was clearly a board that was returned by someone. There were no cables, no duck, and multiple drivers were loose in the box. At first, I thought that I had enough cables and ducks so it wasn't a big deal but after wiring the board up, it didn't work whatsoever. I triple checked the pinouts, did my diagnostics and got NOTHING. After going back and forth with customer service to no avail, I just returned it for a new board. The replacement worked perfectly wired the exact same way and it came with all the products I was expecting. Thankfully I bought this on Amazon and could return it. This was concerning since I bought this through BIGTREETECH's Amazon store but I guess they are sending out possibly returned product as new which is concerning.Overall, the board itself is GREAT and I would recommend it to anyone looking to get some additional features and possibly run Klipper, Sensorless Homing, or Dual Z Leads. I can overlook the initial product issue since it was taken care of, but I didn't like that returned product was being shipped for new orders. This needs to be resolved so the same thing doesn't happen in the future. I still am a BTT fan overall because the product speaks for itself at the end of the day!

I used this board as part of a general reconstruction of my Ender 5 Plus. I had no problems at all integrating it with the existing sensors, heaters, motors, etc., and configuring it to use Klipper firmware with the existing hardware also went perfectly smoothly. Highly recommended as an upgrade or for built-from-scratch printers!

I bet you knew that already. The SKR 2.0 is a direct replacement for the SKR 1.3 / 1.4 boards, with some added features. There are some reviews that rightfully aren't as flattering. In my opinion they refer to the version "A" boards that had problems with the stepper sticks being damaged in a certain configuration. The board I am reviewing here is the "B" board. Since I installed it, I had no undesired issues so far.I like the fact that there are now 3 controllable fan header. (Part cooling, extruder cooling and controller enclosure fan, in my case). A slightly beefier driver for the NEO LED's allows for direct hookup of probably 10 LED's. At least I had no issues with that number.I am using a P.I.N.D.A 2 probe, although I have yet to see significant improvements in bed leveling accuracy. The probe is connected to the Z end stop and the second thermistor input (TH1) and I performed a calibration / compensation. (takes a long time) I believe improvement is so minute that it really doesn't show. Perhaps, changing temperatures on the built surface during ABL will improve mesh data accuracy slightly. My guess is that the independent dual Z stepper control for gantry leveling has a say in that, too.It might just be me, but I think the communication between the TFT and the main board is faster. There used to be a pretty good delay when switching the NEO LED's during print. Now it is mitigated.I only vaporized one of the fan controlling transistors, but this was my own fault not triple checking the wiring against the carriage assembly. Unfortunately, I overlooked the pinched wire to the part fan cooling wiring and viola the transistor in question produced a familiar smell. I caught it soon enough and was lucky it only took this transistor into silicon heaven. These are actually high current (believe 4A peak) transistors in a SOT-23 case. Now I have 99 more transistors in my component box. After replacing the broken one, all is working fine again. Phew, I could have taken out the entire board with that mishap!All over the SKR 2 Version "B" board is performing better than the SKR 1.4 Turbo, thanks to the faster processor speed. I get impatient if I run into lacking hardware, the SKR 2 helps me to overcome my impatience.Satisfied with the purchase, thinking of getting another one.