LED Stripe Holder for Creality Ender 3 (Pro)

This mount doesn't need any material to be mounted. It can be attached to the rails of the Creality Ender 3 (Pro.

The LED-Strip control is done by Octoprint in my case.

The Print:

Version 1

• 15cm in length

• was initially to short for my LED-strips

Version 2

• same design as before

• now 20cm long

It's printed in PLA - but other materials will also work. Just take care, that the strip is not getting to hot and melting the mount itself. 

The Build:

Parts:

• 1x Buck-Converter 24V -  12V (depending on the LED-Strip)

• 1x LED-Strip in the right length

• 1x 10A Relais (depending on the LED-Strip)

In case a different LED-Strip is used, the current rating from the relais could also differ.

Wiring:

• 24V Supply must be connected to the input of the Buck-Converter

• Output of the Buck-Converter must be connected to the 10A Relais

• Output 10 Relay must be connected to the LED-Strip

Config:

To configure everything, the easiest way is through the ~/.octoprint/config.yaml. Make sure nothing is printing and the printer is turned off or in idle.

Add the following code to the config.yaml. If the section systemis not existent, add it to the root. The pin numbers must be adjusted if it's not GPIO 2.

system:
actions:
- action: printer_on
command: pinctrl set 2 op dh
name: Printer ON
- action: printer_off
command: pinctrl set 2 op dl
confirm: This will power off your printer.
name: Printer OFF

After that, restart octoprint with the following command: sudo systemctl restart octoprint.service. 

Now check the Octoprint-GUI, if the buttons are available:

The button naming can be anything you like and will be shown as set in the config file.