BIGTREETECH Manta E3EZ + CB1 V2.2 + 5Pcs EZ2209 Kit Support Running Klipper Firmware Silent Control Board Kit for Ender-3 V2, Ender-3 Pro, Ender-3, BIQU B1 3D Printers

I have an Ender 3 V2, and I bought this for 2 reasons.1. I switched from Marlin to Klipper, which required a Raspberry Pi. However, the Pi4 is unstable and would regularly reset.2. I added a second Z-Axis motor, but it could not be separately controlled. I needed something with 5 independent motor drivers.This has served both these purposes perfectly.The power supply was designed around the power issues associated with the Pi4, and it is quite stable.For dual Z-Axis control, do not use the Z1/Z2 outputs directly. They are both connected to the same driver. In my case, one motor is on Z1, but the other motor is on E1 (Second extruder). In printer.cfg, you just have to add a second stepper [stepper_z1] and use the control pins from the [extruder1] section.Then you will want to add a [z_tilt] section. This will allow Klipper to adjust each Z axis motor to level out the gantry. Separate drivers for each Z motor is also much quieter.The CB1 is pretty good, too. It's comparable in power to a Raspberry Pi 3. BTT's OS image worked without issue. If you are going to use WiFi, remember to connect the WiFi antenna. The module doesn't get reception on its own. And if you have extra motor heatsinks, they are actually perfect for cooling the SOC.As far as value: This is actually the least expensive combination I have been able to find. In many cases, the compute module alone is comparable in price to this entire combo. Prices fluctuate, though, so make this comparison for yourself. This product is not perfect (see the Cons section), but it is about the best you can get at this price point. As far as I'm concerned, if you connect this to an Ender 3, you will have the ability to max it out. If you should need anything more, you'll probably want to get an entirely new printer.Pros:- Great power stability- Great value- 5 motor drivers- Tons of connectivity expansion. Neopixel header, BLTouch header, several fans, accelerometer etc.- CB1 has prebuilt images for Klipper, and the E3EZ has pre-built, annotated config files.- It comes with connectors and pins for assembling connectors as needed. This was MUCH appreciated.Cons:- I hear it has issues with the Ender 3 enclosure. The OS SD card interferes with the side of the case, and applying too much force could strip the SD card slot off completely. I have an external enclosure, so this didn't affect me. But keep it in mind if you are trying to fit it into an ender 3.- Some of the end stop connectors have latches that keep them from fitting onto this board. I simply had to snip them off.Improvements:- It would be awesome if they added support for 12v fans on >12v systems. Perhaps a 12v power stage, or an external fan power input with a jumper. This would open a lot of doors for upgrades- They should probably provide configs and clarify in the overview that you can use something like E1 as a second Z axis driver. That was a selling point for me, but I had to look deeper to see if I could do it.

I got this to replace my SKR E3 Mini V3 that got fried in a power surge. Well, got it all wired up, flashed the CB1, and when I went to find the IP address of the CB1, it wasn’t there, I had done everything right, but it wasn’t showing up. My advice, if you have WiFi 6, use an Ethernet cable

Looks great but it's a dead brick. No power from DC input. So sad. Now the horrible experience of tryn to make things right

Doesn't really fit in the ender 3 as said with it smashing the wires against the metal cross piece.

Klipper host (RPi clone), MCU, and CAN bus controller, all in one. Take your printer to the next level with this board and declutter your electronics enclosure at the same time. Do note, this board is designed specifically to fit an Ender 3. Not a V2, or any other variant. Expect to have to modify your enclosure if you use it in anything other than an original Ender 3. That said, it's worth it. I needed to remove the screen and cut down a screen mounting post in my Ender 5 Plus to get it to fit, even though it uses the same mounting hole layout.