This was supposed to be a Z probe sensor mounted directly on the Platform, before you add your hot end, in order to calibrate your delta X, Y and Z Offset and also Radius.

You need:

• some switches between 3-6 is up to you. You can find on banggood some small switches here or long switches here
• some soldering equipment and skill
• and a printer of course to print this.

All the switches will be connected in parallel so when anyone is pressed, the ZProbe is triggered.

Note: Didn't finish the setup yet will update with picture and video when ready.

RepRap

Rostock mini

Doesn't Matter

Doesn't Matter

0.4 nozzle, 0.2 layer height

25%

I used ABS, since I saw it makes a better precision part, but is shouldn't matter that much

I duplicated the platform file, removed what was not needed.
Measured a switch and placed it on the platform as a hollow space.
Also I made sure there were hollow corners so I can put wire through that.
I also added some room for the wire on the back, since that will be bolted to the platform.

I will see if there are problems with the current design and I might add some space in the next iteration on the same face with the micro switch for a m3 nut.

Just added the v2 with the hex space, and cleaned up the unneeded carriage.scad.

I added a new version that merged it directly into the platform. you might not want to be a separate thing, but be part of your delta platform.

Note/TODO:
It can be created some sort of ring that can be attached to trigger the switches.
Maybe the holder of the extruder/hotend can have some sort of trigger mechanism.