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bondus / KlipperToolboard

A 3D printer tool head controller board
GNU General Public License v3.0
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Endstop inputs #12

Closed shavrin777 closed 3 years ago

shavrin777 commented 3 years ago

Is it possible to add solder jumpers on the endstop inputs to disable pull-up resistors and RC filters so that these pins can be used as normal GPIOs? For example this can be used to connect servos or BLTouch. image

bondus commented 3 years ago

You can use the debug connector pins (SWDIN/SWDCLK and in some cases BOOT1) as GPIOs, they only have pull down resistors. There are two small pads on the back as well connected to PB10/PB11. Servos and BLTouch requires 5V to run, so you would need a separate DCDC to supply them.