Ive posted about a couple findings already. ( Please publish some technical drawings ) @Atom Suggested to make a new Thread to keep the Technicaldrawing Threat cleaner. So i’ve opened up the Controller today and had a look at its two boards. There is a total of 2 CAN transceivers. Each is singleend…

Just saw your Post. I can get you the IDs which report when the Homing Endstops are hit (not usefull as the Printer is not behavign as i expected, maybe sourcecode digging will show why) Each linear module is controlled with a “EN,DIR,STEP” signal which is coming in via the cable. There is a Level…

I see the CanModule.cpp code seems to poll limits with FUNC_REPORT_LIMIT on line 339? If that’s relevant at all, I don’t have a debugger hooked up at the moment. Thanks for the tips, I’ll keep poking along and let you know if I find anything useful as well.

Btw, if you have a pair of 2.54mm pins laying around, the Smaller Datapins are spaced perfectly for them to be stuffed in. Just be Carefull not to break anything :smiley: Check the first Post in this thread, you see the “cable” there which i am using.

I do have a bunch of those laying around…Hmm, great tip. I also have male crimp JST pins, maybe I just make a ribbon cable with small pins that stick in the end. [image]

Just did a Boot to 3D Calibration CAN sniff. https://pastebin.com/p0Pka2gz all the Data is in Hex IDs 0-20 are Marlin specific and only set to 0 at Homing start. 0x16 looks like a Info request or a Heartbeat as its regular 500ms intervalls 0x615 Probe 3D module 0x616 is the Filament sensor (wh…

Hi there, I’ve been able to get the logs when starting up and get the reported IDs vs Functions for the 3 toolheads. Here you have what the FW says ( I’ve added the comment function myself :wink: ): 3DPRINT Module Basic MacID:25863 FuncID:8 // FUNC_SET_FAN Basic MacID:25863 FuncID:9 // FUNC…

I’ll just tag on the corresponding code from the firmware to that. Helps parse the module ID from the MACID, if nothing else. I’m excited for the Snapmaker Air Conditioner… // FuncID defines typedef enum { FUNC_REPORT_LIMIT , // 0 FUNC_REPORT_PROBE , // 1 FUNC_REPORT_CUT …

Using @Franky ’s help, I thought I would throw my complete startup dump on here, so we can compare the different in MACID and functions, etc. This is with the 3DP tool. start echo:PowerUp Marlin SM2-3.2.2 echo:Compiled: Aug 31 2020 echo: Last Updated: 2020-8-22 | Author: Snapmaker Team echo:Compil…

Its been quite a while. After getting shown how to unlock the Controller and add custom Firmware driectly without going throught Luban as a Upload preperation, i managed to add my custom M-Command which is able so send out CAN messages (just standart frames for now). Having the SN side “working” i …

Awesome work! Following this post to learn more. Going to tear down the SM2 laser module soon.

Poking around in CAN Bus

Snapmaker 2.0 (3-in-1)

xchrisd February 17, 2021, 2:56pm 18

You have to follow the thread here, if you want

Topic		Replies	Views
Custom Extension Module Snapmaker 2.0 (3-in-1)	63	7607	December 9, 2023
Please publish some technical drawings Snapmaker 2.0 (3-in-1)	24	3873	January 19, 2021
Flashing the controler? Snapmaker 2.0 (3-in-1)	49	4252	December 25, 2022
DIY Emergency Stop Button Snapmaker 2.0 (3-in-1)	53	6387	January 20, 2023
3D touch probe connected to can bus Snapmaker 2.0 (3-in-1)	15	2440	August 11, 2022

Poking around in CAN Bus

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