Hi, I’m building a Voron that came with a BTT Octopus. I will make it Canbus + umbilical. There’s something that’s unclear to me… I read somewhere (Reddit ?) that Klipper doesn’t support Canbus if the Pi and the MCU are communicating over UART (USB only)… I see no reason for such a limitation. Be…

As far as I understand it, there is no code for passing CAN packets to another controller (usually a toolhead controller) using anything other than USB. I’m not sure about your reluctance for using USB; the Raspberry Pi (which you seem to be using) has a built in hub - you just run a standard USB A…

@YaaJ the STM32 UART can not communicate at CAN bus speed (1 Mb) and as I understand the USB & CAN bus ports can be enabled at the same time but the UART and CAN bus cannot.

Thanks for the answer. Now I understand. Meanwhile, I found some mini hubs that are splitters ( 1 port → 2 ports) reasons for prefering UART : wiring is cleaner (IMHO) USB adds hardware and software layers I use USB for other purposes, and the Pi is limited to 4 ports : consider this : a touch s…

Can I ask why do you want to get a hub? The hub built into the Raspberry Pi has four USB ports. Normally it isn’t necessary to place a hub between a Raspberry Pi and a controller, like the Octopus. @NAPCAL the STM32 UART should run comfortably at 3MBps in normal operation and up to 9MBps when usi…

Cross posting ! Was editing my answer…

[image] Feature Request! UART to Can bridge mode for STMGOB1 boards Features Hi Is it possible for the Klipper Devs to add a UART to Can Bridge config for STMGOB1 boards? I used to use UART between my PI and SKRminie3v3 until I added an EBB42 canbus toolhead to my printer…

LDO Voron 2.4 / Canbus

General Discussion

NAPCAL September 16, 2023, 9:50am 7

Topic		Replies	Views
Feature Request! UART to Can bridge mode for STMGOB1 boards Features	6	725	June 5, 2023
[Feature Request] Support MKS SKIPR board (canbus port not working via uart PI to MCU) Features	5	1677	May 6, 2023
Experimental "USB to CANbus bridge" mode Developers	61	23394	April 16, 2023
Voron 2.4 r2 CAN bus not working General Discussion	7	965	April 3, 2024
What are the possible RPi/MCU communication General Discussion	2	445	December 4, 2022

LDO Voron 2.4 / Canbus

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