What do you need?
- Breadboard or proto board
- Generic Optoisolator, I’ve used an 4N35
- A Led
- A resistor
- Some wires
- Shrink tubes
- Soldering Iron and solder
- Tweezers and pliers
Once you’ve all the needed parts you have to assembly the board and connect everything together.
Here you’ve the scheme of the connection that I’ve made:
And this is how it looks like after it’s finished and protected with some shrink tube:
The pinout of the circuit is the following:
- WHITE: +12V
- BLUE: Opto Led Cathode
- BLACK: GND
- GREEN: Z-Endstop pin
Plan B: Buy a premade one
For a better result and a flawless installation I’ve also developed a pcb that is currently in production.
If you want one of this assembled or to solder by your self please send me an email through the contact from.
2 thoughts on “Simple Optoisolator Board Assembly – Step-By-Step Guide”
Hello for ender 3 that is 24v what is the layout of the pcb? What parts should I buy to make my own?
Hi, thank you for your comment and sorry for late reply but it was in the spam.
For 24V usage just double the value of R1 so from 2.2k to 4.4k.