BIGTREETECHSKR 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)

Easy to setup and I was able to fin a lot of information about this board on github.

While I like the concept of the ez drivers, there is certainly room for improvement. They worked fine so no issues there but the drivers are so hard to get into the adapters you almost need a hammer. And what is up with the heatsinks? Again Its a great concept but not very well executed.As mentioned in another review they wrap around the driver board and are held by a screw. But they make almost no contact . I use a couple of fans directed at the drivers so hopefully it wont be an issue but seriously BTT. Thats the best you could come up with ?

These drivers worked perfectly in a very old board with the use of the adapters. After making sure I have the adapters in properly, it was easy to plug in the stepper drivers. I now have the ability to moderate voltage from software and have had zero issues with the drivers. Great product!

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!

At 1st, the board seemed fine, but even before anything other than the stepper drivers were added, it began to return a "TMC Connection" error for the TMC2209 drivers that came with it. I have no idea what is going on. I tried fresh firmware and different compile environments under Bigtree_SKR_2, but what worked no longer worked once in the board. Ultimately, I decided to try them in standalone mode, which means manually calibrating current per drive. This option worked, which only proves how faulty the board is, since it is supposed to support UART mode in the tmc2209.I've read enough reviews and support queries to know that the SKR 2 has a history of questionable functionality. Its inconsistency appears to be the norm. I am sorely tempted to look into some sort of lawsuit. How can Bigtree or anyone else continue to sell something so unreliable?Update:I got things working, but lost several stepper drivers, several were simply defective, skipping steps or randomly haulting, causing prints to fail or throwing the hotend out of alignment. I had the purchase more drivers to replace the defective ones sent with the board.