Electrical components & wiring

Step 1 What do we need to plug?

Raspberry pi 4
sunon fan
Raspberry pi 4 sunon fan

We need to plug:

  • 12V devices:
    • Fan for filter and ventilation: need 12V and consume very few (≈0.3A) available in our shop here
    • LED: 1.2A available in our shop here
  • 5v devices:
    • Raspberry PI: need 5V and consume:
      • PI3 ≈ 0.4A
      • PI4 ≈ 0.9A
    • Screen for Raspberry: 7inch ≈0.55A


Step 2 Can we plug LED, fans, Raspberry PI on printer’s PSU ?

Printers manufacturers, as Prusa, define PSU specification for printer use, therefore printers manufacturers doesn’t recommend to connect additional device on printer PSU.

Step 3 12v power source:

12v power adapter is required and available on our shop here.

You can choose:

  • 3A power adapter if you want to plug only LED or/and fan.
  • 5A power adapter if you want to plug also Rapsberry PI

12V Plug is also available on our shop.


Step 4 12v wiring solutions:

Depending of your needs you can connect different components:

  • Fan/filter only
  • Led + Fan/filter
  • Led + Fan/filter with temperature control system

You can make your own wiring system following next steps, or find our wiring harness on our shop, to get everything plugged easily ! go to shop

Step 4.1 12v wiring for fan/filter:

For fan and filter, we recomment you to follow the HEPA & carbon assembly guide.

PWM motor controler:

Step 4.2 12v wiring for fan/filter with temperature control:

Please see first informations on step 4.1

For addding temperature control, please follow the temperature control assembly guide.

Step 4.3 12v wiring for fan/filter with temperature control and LED:

  • We developped a wiring harness using that schematics. For an easy connection of everything, without any tools ! You can find it on our shop here


  • Or to make your own, please see first informations on step 4.1 and 4.2
    For addding LED lights, please follow the LED lights assembly guide.


Step 5 Raspberry PI 5v converter:

Raspberry PI need 5V power connection.

We are working to design a dedicated solution for powering PI with high quality 5V converter.

Already available on the market power buck converter:

/!\ This adapater can generate “Low power” warning.

“Low power” warning can be caused by USB power cable. Please use high quality power cable.