1. Take a handsfree with volume control keys, like this one:

2. Open the PCB cover
3. Desolder one of the volume control push buttons
4. Solder a pair of wire to the pads on the PCB
5. solder the other head of the wires to the COM and NO contacts of the micro switch

Download the microswitch holder STL file from the files section and print it.

1. Download the microswitch holder STL file from the files section and print a few of them.
2. Insert an M3 nut in it.

This may need some force. I used a needle nose plier for it.

But be careful, if your microswitch is too big for the printed part, edit the part and print it again or sand the microswitch a bit.

You need to find which part of your printer will move with the printing head. For example, for me, it was the X-axis V-Slot.

It's the same with Ender 3, CR10, or any other 3D printer with a similar design.

Use the link below to download the files and see the installation instructions:

https://github.com/simonjamain/CustomTimelapseCuraPlugin

You need three coordinates for the X and Y axis before getting to the next step.

1. The position of the build plate that you want it to stop after each layer finished for taking the pictures, let's call it <bed stop>

2. The position of the print head TOUCHING the microswitch arm, let's call it <switch touch>

3. The position of the print head PRESSING the microswitch, let's call it <switch press>

Open the Cura with the costume time laps plugin installed, add the post-processing plugin and make the setting like mine:

In the GCODE for the first position, write this:

G0 X<switch touch> Y<bed stop> F9000 ; Go to position

And in the GCODE for the second position, write this:

G0 X<switch press> Y<bed stop> F4000 ; Press the button
G0 X<switch touch> Y<bed stop> F4000 ; Release the button

Replace the <switch touch> ,<bed stop>, and the <switch press> from coordinates from step 7

Save the G-Code and make your printer ready.