BTT's great documentation on this board: https://github.com/bigtreetech/BIGTREETECH-OCTOPUS-V1.0
Sample AliExpress listing for this board:
https://www.aliexpress.com/item/1005002611654405.html
Features I didn't mention (trying to keep video short):
diag pin jumpers, to allow for sensorless homing
RGB LED header
microSD card
automotive fuses
really great labeling on back/silkscreen labels
