CAN - Bus not working (stuff bit error)

[zmaier24]

Hello,

i am using a Pyboard v1.1 and i want to test the onboard CAN-Bus with an external transceiver SN65HVD230.
I tried to send a test-message to a Vector VN1640A device running with Canalyzer. But the transmission is not working, i always get "Stuff Errors" and i don't know why?

from pyb import CAN
can=CAN(2, CAN.NORMAL, baudrate=125000)
can.send('123',123)

Any ideas why, any proposals what i can try?

Many THX
Martin

[zmaier24]

I found a solution :
Just don't buy counterfeit modules from Aliexpress :)
https://de.aliexpress.com/item/4000338454761.html?spm=a2g0o.order_list.0.0.60b65c5fDllGW8&gatewayAdapt=glo2deu

I bought it now from berrybase, with those, everythings works as expected.
https://www.berrybase.at/sn65hvd230-can-board