Hey guys, I was looking on the forum for something similar to my problem, but I didn't find anything that helped. My problem is that I get the serial number for my printer, but it still won't connect to Mainsail and keep saying "mcu unable to connect"... What could it be?
Thanks for your help!
#mcu 'mcu': Unable to connect - Ender 3 - SKR Mini e3 v3
frail glen
vital rivetBOT
Ahoi @frail glen!
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barren latch
please fix your tags, Mainsail has nothing to do with this
Also send your make menuconfig settings
frail glen
please fix your tags, Mainsail has nothing to do with this
Sorry, what would be the most appropriate Tag for this?
barren latch
You sent the klipper log. The screenshot you sent says klipper error
I guess you get the point which tag should be correct ^^
frail glen
I guess you get the point which tag should be correct ^^
Lol tnx
Theese are my settings... something wrong here?
barren latch
How is your board connected to your pi?
frail glen
**Ahoi <@274262242848145409>!**
Welcome to the Mainsail support-forum!
There is ...
I know I have some converters but I think if I get the serial, it means I have a good connection, right?
barren latch
It just means that there is a connection, not a good connection....
The error you have is normally due to wrong firmware on the board. It indicates that the board is not flashed. In your case it could also be corrupted signals
Never use that many adapters
How is your board even powered?
I thought the screen connector doesn't fit on the skr mini e3 v3
frail glen
What do you mean by saying how my board is powered on? I replaced the board with a mini e3 v3 and a TFT35 screen. I've printed with that setup a few times. I decided to use Klipper with my Raspberry but I haven't been able to print.
I changed the firmware from Marlin to Klipper on the mini e3 and I know the screen is not compatible and indeed the screen says it cannot find any printer.
barren latch
What do you mean by saying how my board is powered on? I replaced the board with...
I meant the pi
frail glen
I meant the pi
Oh, the TFT screen has a USB port and I have a connector that only is for power not for data
barren latch
Ah ok, then just try to connect the board with less connectors.
On a pi0.2 the best way would be the gpio pins, but you don't have them...
frail glen
Ah ok, then just try to connect the board with less connectors.
Do you think my problem is with my adapters?
barren latch
Yes, those could lead to some corrupted signal, like mentioned here: #1391288069008789625 message
I don't think that Klipper does any error correction and I'm pretty sure it doesn't retransmit data. So if your signal is just a bit corrupted it could lead to the error, as Klipper won't get a proper response
frail glen
What if I fix my connections and still have the same problem?
barren latch
Then we have to dig a little bit deeper with sudo dmesg, or you would have to ask on the Klipper Discord.
frail glen
Yep, it's the connection 😑
barren latch
So if there are no further questions, please close this post
That warning can be quickly fixed with our config btw:
https://github.com/mainsail-crew/Mainsail-config