Scott Schering
UNITED STATES OF AMERICA • + Follow
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Description
CANBUS Adapter for SKR Mini E3 V2 and V3
Project to create a plug in CAN board for the EXP1 socket on the SKR Mini E3 V2 and V3.
I did a proof of concept with a commercially available MCP21551 can transceiver board and jumpers ( pictured)
Knowing it works well in I moved on to designing a plug and play version that can plug directly into the EXP1 port on the SKR Mini.
Github Link to the SKR Mini E3 CANBUS guide
Wiring Diagram
Schematic and Layout
Schematic
SKR_CAN_sch.png
Sep 23,2022
5,514 views
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CANBUS Adapter for SKR Mini E3 V2 and V3
CANBUS Transceiver for the SKR Mini E3 V2 and V3 board. Plugs into the EXP1 port.
5514
1
4
Published: Sep 23,2022
Download Gerber file 10
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I should have my first batch of boards for testing here soon.. When I get one assembled I'll post an update of how it connects. The need for the 120 ohm termination resistor depends on your can bus configuration.
Okay thank your for your command, i want use "BTT EEBB42 Support CAN BUS Connector" that has 120ohm terminastion , i can Set to aktiv Mode oder deaktv with jumper....this is a exdruder side ...and dont know If i need other 120ohm on the skr Mini side ...that is my problem ...thank you for all information.
If you have it on the same bus with a EBB42 and it's jumpered you should be ok without the resistor. THis is assuming they are both being connected to a U2C and it's 120 ohm jumper is in place. Overall you want the bus to measure 60 ohms between can H and can L ( powered off ) Just want to say that SKR board is not going to act as a USB bridge.. you will need some kind of USB to can bridge like a U2C or a can hat on the pi. This just lets you link the SKR by can instead of USB.