Would this configuration work on my 1LC toolhead pcb?

[Oddstag]

Hey team, I was wondering how I can get the most out of the 1LC I have coming in the mail. Currently I have both my x and y (hall effect) endstops on a single pcb (voron hall effect pcb). I also have the voron cnc tap. The endstops share a 5v pin on the pcb. The tap also uses 5v. I was wondering if I could do the following?

Voron Tap Sensor: IO_0 - io0.in, +5v, GND
X Hall Effect Endstop: IO_2 - io2.in, +5v, GND
Y Hall Effect Endstop: IO_1 - io2.in

With the endstops sharing the the same 5v and GND from IO_2.

My understanding is that IO_1 is tolerant of 3.3v so would wiring a 5v powered sensor to io1.in be bad news? Should I instead look to IO_3's io3.in instead as the input point for the Y end stop?

Thanks and happy holidays all.

[droftarts]

@Oddstag See the table here: https://docs.duet3d.com/Duet3D_hardware/Duet_3_family/Duet_3_Toolboard_1LC#pin-names
io0.in, io2.in and io3.in are all 30V tolerant, so can generally take any input. io1.in is 3.3V tolerant, and you risk damaging the board MCU if you exceed this voltage. So yes, wiring 5V to it would be bad news.

Ian

[Oddstag]

@droftarts

Brilliant, thanks for the response. One last question if I may. IO_3 is composed of through holes by default, correct? Are any headers included in the packaging that fit one of its arrangements? Or is the expectation that sensors be directly soldered to the board here? Is there a recommended way to make items ‘pluggable’ here?

[dc42]

@Oddstag IO3 is intended to be used as a docking sensor by fitting either a microswitch or either of two different types of optical sensor. Those are what the pads are designed to fit. You may find that a 2-pin header will fit two of the pads.

[Oddstag]

@dc42

Good to know! Thanks a bunch.