BIGTREETECHCB1 V2.2 Core Control Board, 1GB RAM, 100M Ethernet + 100M WiFi, Support HDMI, Compatible with Raspberry Pi 4, Pi4B Adapter, Manta M8P/ M4P Motherboard to Run Klipper Firmware

works as expected from a btt product.

I love this setup it’s working perfectly for running klipper and was super easy to setup following the detailed instructions that were provided. You can find a lot of cases on line for this combo.

Manual clearly states how to get the usb ports working with a cm4.If you do not read the manual, and follow the instructions, they wont work.The USB ports on the cm4 are disabled by default.

my whole ender max neo runs off BTT so I decided to change the raspberry cm4 to the BTT cb1 ecmm. So you would think all bigtreetech products would work together, So I waist the time switching out my raspi cm4 to this board and programming it just to find out you can't use the DSI connection for your screen.. and they don't mention that any where in the description or manual you just have to wait time googling and researching on your own to find out. So the board is in the mail back to amazon..

Used them for a james web telescope model.

Update :First board I received was likely not DOA. I received the replacement board, and it wouldn't power up either. On a lark, I decided to try a USBA - USBC cable, and it powered on (though I'm receiving undervoltage errors because of this, even though I'm using a 2.1 amp power brick). Because this limitation is not listed anywhere, I'm not sure I'll be keeping this board. Updated my 1 star review to three, because while the board does work with the CM4, the lack of power from USBA power bricks is a big drawback...Board is DOA - first BTT item I've purchased with this issue.Took a CM4 (1GB/16GB eMMC) I've got in a Waveshare CM4-IO-BASE-A, which is working perfectly (MainsailOS installed), and transplanted it to the Pi4B board. No power / LEDs, no video output, nothing. Went through the exchange process to see if I just had bad luck and got a defective board. Will update this review once the replacement arrives and I test to see if I have the same results.

Big fan - worked well on my ender 3

Wow! I have no idea how wifi connection is too bad. Wifi connection is lost every two minutes although my labtop keep maintainingthe connection. Fiudd keep trying to reconnect.I checked the antenna, attached a fan, and replaced another one but still the connection is too bad.

I got a CB1 for my Manta E3EZ. I also got the CB1 heat sync. It's working VERY nicely in my Ender 3 Pro. I'd previously used Klipper with a Pi 2 B which couldn't really keep up and gave me grief. The CB1 is a good fit for this application. My CPU temp is around 49C which I could improve if I rigged some active cooling near it. The 4 CPU threads seem way more than I need for Klipper (etc) which is perfect as there's room to grow. 1GB of memory seems tiny lately, but I seem to not need 1GB for this application, so, why pay for more? I'm a fan. The top competitor board in my mind is the Orange Pi Compute Module which has a very similar price, but some nice additional features that I don't need. I'm happy with this Biqu/BTT option as it was intended to be used with the other hardware that I'm using it with and everything got working with damn near zero thought on my part.

Needed this for setting up some Raspberry Pi CM4s for 3d printers and it did the job.

RPis are expensive and hard to get so I put a Manta E3EZ in my Ender 3 Max and this board in the Manta, so far no issues, wifi works with no disconnects. It's been worth it so far.

Easy to get setup with Klipper and is running stable. Keep in mind you cannot use a Pi screen with the CB1. You need either a hdmi screen or the spi.

When it worked, it was fine, i had no issues with it, came home from work the CB1 and The Manta it was plugged into where totally dead.. nothing.