BIGTREETECH EBB SB2209 CAN V1.0 for Voron Stealthburner UART Mode Support Klipper with 100K NTC B3950 + 30-Pin Ribbon Wire Kit

I use this board on a stealth burner for a Voron 2.4. As long as you follow instructions and are careful with the fan board (Make sure not to let it short against either the fan or the extruder fasteners in the stealth burner these are great boards. The fan board is in a very tight space, and you need to make sure that if the fan has mylar stickers you insulate it appropriately. I used some black electrical tape and some Kapton tape to make sure it doesn't have a problem. Also check the back of the board and make sure any soldered leads are not too long or sharp. If need be trim and file very carefully. When putting the front on the stealth burner make sure the pins correctly aligned. Look up Esoterical's guide and it will go pretty easy (This is painful experience speaking). It really beats running all those constantly breaking wires through the drag chains. I also used the separate can bus interface board. If you have problems, check for shorts. They are insidious.

Quality can hotend interface

Main Connector failed a month in, just outside of return window, fuse holder loose fit. The thermistor connector on this is tiny. The main connector has no reliable locking mech, and the fuse holder can happily loose your fuse. I've got it back running again, after re-soldering the connector, expanding the pins on the 24V a bit for a tight fit, strapping and hot gluing the connector in, made it through one print, the next was an almost instant fail. Fuse in it's connector on the backside started to bounce around in it's connector. Dab of hotglue on that too and maybe it'll hold up? I appreciate the products, but I also want to see improvements that bring more reliable products. These toolheads, in some cases being "whipped" around, we need connectors that can handle the trauma these parts are subjected to.

Now I only have to worry about 4 wires breaking from repetitive stress instead of 20! Software/firmare was a challenge to set up (fortunately there are lots of guides online and in videos), but seems rock-solid once you do. I do have the same complaint many do - the tiny connectors on the PCB are so small they are both a pain and a potential point of failure. For the 2-wire thermistor connector, I soldered wires to it and put a microfit connector on the other end. More reliable and MUCH easier to access when I want to change printheads.