I can't seem to find wiring diagrams anywhere, so I am asking here.
Which pins do I use to connect my Arduino Uno to my Bigtreetech board?
I am connecting the Arduino to use it as an ICSP programmer, so that you can flash the BigTreeTech board. I have a V3 board version.
First, make sure that you have flashed your Uno to be an ICSP programmer.
Then you just connect up the SPI pins of the two boards.
The pins on the Uno that you must use, are these, circled in yellow (you can ignore the red circles):
The pin out is as follows:
The pins on the BigTreeTech board are shown on the right hand edge/side of the board, half way down, where it says SPI1:
The SPI pins on the v3 version of the board are still in a similar location, but in a different order (along with 2 other pins, that can be ignored):
Connect these pins on the Uno, to the "like-for-like" pins on the BigTree - no crossing over of wires is required. So, connect:
On the V3 board ignore the additional NSS and 3.3V pins on the SPI1 connector
