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bigtreetech / BIGTREETECH-SKR-mini-E3

BIGTREETECH SKR-mini-E3 motherboard is a ultra-quiet, low-power, high-quality 3D printing machine control board. It is launched by the 3D printing team of Shenzhen BIGTREE technology co., LTD. This board is specially tailored for Ender 3 printer, perfectly replacing the original Ender3 printer motherboard.
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more analog inputs (e3 v3) #739

Open FkYeahScience opened 1 year ago

FkYeahScience commented 1 year ago

Hello all,

I am trying to attach a hall sensor based filament diameter sensor to mi SKR mini e3 v3 running a voron v0.1.

https://www.klipper3d.org/Hall_Filament_Width_Sensor.html https://www.thingiverse.com/thing:4138933

Therefore I am looking for 2 free analog pins (0-5V DC input) on the board. So far I am using these, I assume "PA" is short for "pin analog" (?).

PA 0 - "TH0" - in use for hotend thermistor PA 1 - "Z-PROBE" - in use for servo (SideSwipe Z-Probe) PA 8 - "Neopixel1" - in use for Neopixel

Can anyone tell me which other pins could be usable for this? Trial and error does not seem to be a great alternative...

I would very much appreciate any input on this, even if it's just a link to the right extension board.

Thanks for reading!

radek8 commented 1 year ago

You can find the pin specification in the datasheet for the processor. Your board was manufactured with several types of processor.