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bigtreetech / SKR-3

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Documentation vs real reading hardware SKR 3 EZ #49

Open livius2 opened 1 year ago

livius2 commented 1 year ago

Hi

according to https://github.com/bigtreetech/SKR-3/blob/master/Hardware%20(SKR%203%20EZ)/BIGTREETECH%20SKR%203%20EZ%20V1.0-SCH.pdf

Endstop X, Y, Z, E0Det, E1Det have internal pullup resistors 10K. But when i measure by multimeter https://github.com/bigtreetech/SKR-3/blob/master/Hardware%20(SKR%203%20EZ)/BIGTREETECH%20SKR%203%20EZ%20V1.0-PIN.pdf only E0Det and E1Det have 3V3 on pin PC2 and PA0. But PC0, PC1, PC3 are not 3V3.

What is the real design?

PS. i use recent Marlin software on it.

Schmudus commented 1 year ago

Hello everybody,

I have also this great board, working in my retreaded Anycubic Mega X. Board is great. I learned that it is very sensitive with wrong wiring the fan connectors. I unfortunately wrecked the first board :-( Anyway, now its running but its running only at 400 MHz. Also the first board was only at 400 MHz. Is anybody have the same? Anyone know how the get the board to the promised 480/530 MHz? Thanks and have a nice week Schmudus Screenshot 2023-08-27 210154

EDIT: Okay, found it. It's because Klipper doesn't support more than 400 MHz.