cb1 questions
@blacksmithforlife hey dude, I’m trying to get my CB1 and pi4b adaptor set up, once I’ve flashed it with a klipper image can I remove the SD card? Also is there anyway to get the DSI port working for a screen?
27 Replies
other-emeraldOP•2y ago
What I’ve currently read is the DSI port only works with the cm4
once I’ve flashed it with a klipper image can I remove the SD cardNot unless you have flashed it using the eMMC.
Also is there anyway to get the DSI port working for a screen?look at the
/system.cfg I believe you need to add different overlays depending on what screen you are usingother-emeraldOP•2y ago
Is the eMMC built in on all CB1s?
no, depends on which CB1 you got
honestly though, eMMC is faster but for ease of use I would go SD card
other-emeraldOP•2y ago
Thanks for answering my questions, looks like I need to get or find another micro sd somewhere
https://www.amazon.com/gp/product/B06XWN9Q99/ is my go to choice for pretty cheap but good quality
I believe @miklschmidt likes sandisk? https://www.amazon.com/Sandisk-MicroSDHC-V30-32GB-Extreme/dp/B01LRW8FWY
he does
other-emeraldOP•2y ago
I have a legit question now, how do I get these GPIO pins working? I want GPIO pin 26 to control a fan, I’ve tried gpio26, PC15 and GPIO79 from some look up table and none of those work
@blacksmithforlife please see above if your awake
Look up the CB1 documentation, i don't own one
Also be careful with hooking up a fan to the gpio's, you don't want much current flowing through them, or you'll fry it.
other-emeraldOP•2y ago
It’s a cpap fan. I have done my best to research the documentation and followed the steps but I must be doing something wrong. I know black smith is pretty familiar with the cb1 so thought I would ask. I’ll try reading through the ratOS printer.cfg and moonraker.conf and see if I can piece it together
why in the world would you hookup a cpap fan to your CB1?
other-emeraldOP•2y ago
For print cooling?
Use your control board
don't hookup stuff to your CB1
other-emeraldOP•2y ago
It needs pwm control
Yes?
I'm sorry but i need a whole lot more context to help you i think
You must've gotten the idea to get a CPAP fan from somewhere? Does that someone not tell you how to use it?
There's a reason we swear by 4028's
Not only because they perform better 😄
other-emeraldOP•2y ago
There’s instructions on how to set it up with a raspberry pi, but not a cb1
Can you link them?
I need to know what we're dealing with
other-emeraldOP•2y ago
other-emeraldOP•2y ago
This is the wiring diagram. The blue board is the cpap fan speed controller
other-emeraldOP•2y ago
GitHub
[HOWTO] 40-pin GPIO & ADLX345 on CB1 · bigtreetech CB1 · Discussion...
Hello, I started this new thread in order to regroup all the info and made them are easier to source. 40-pin connector / GPIO As somebody already discovered, the CB1 uses a custom IO pinout for the...
other-emeraldOP•2y ago
This is the documentation I’ve tried following to get the GPIO ports to work
this is super silly. Just hook up that pin to a control board GPIO.
Use the negative terminal of the part cooling fan pin for example
then do:
(i'm expecting the controller to want a 25khz pwm input, look up the datasheet and modify cycle_time accordingly)
other-emeraldOP•2y ago
Yea I have the cycle time in the cfg
Good, then just fix your wiring and you should be good to go
other-emeraldOP•2y ago
Ok, because a part cooling fan is pwm controlled anyway
Makes sense
Every single gpio on your control board can be pwm controlled
Your control board is meant to control these things
Oh btw i'd recommed removing the voltage jumper on that fan port, just in case. It shouldn't actually matter, but better safe than sorry.
Sorry, been dealing with a sick kid, but yeah as Mikel said use your control board and not the cb1