Jump to content
Ultimaker Community of 3D Printing Experts
june

Enclosure Fan - How to Hook Up Relay

Recommended Posts

I have an Ultimaker 3. I have a relay that can be triggered with 5-12V to control a 120V outlet, into which I've plugged my exhaust fan.

 

I've got the Enclosure Fan plugin loaded in Cura, and now I'm trying to learn where to pull a low voltage trigger signal from. Any ideas?

Share this post


Link to post
Share on other sites

It seems that you need to configure the G-Code to switch a pin in the plugins config:

 

https://github.com/Pheneeny/CuraPlugin-EnclosureFan/blob/master/EnclosureFan.py

 

In Marlin firmware you can use M42 to switch a board pin.

 

I don’t own a UM3, but I think that the UM2.1.4 board is still used for motion control.

so you can check the circuit for a pin to use here

https://raw.githubusercontent.com/Ultimaker/Ultimaker2/master/1091_Main_board_v2.1.1_(x1)/Main Board V2.1.1.pdf

 

For example use header Exp3 and Pin PB7. Find the position on the board drawing in the same PDF.

 

Then look up the arduino pin mapping for the PIN number to use for the M42 command.

The Ultimaker board is essentially a nicer Arduino Mega 2560.

 

https://www.arduino.cc/en/Hacking/PinMapping2560

 

PB7 is pin #13.

 

So try M42 P13 S255 for on and M42 P13 S0 for off.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Our picks

    • Taking Advantage of DfAM
      This is a statement that’s often made about AM/3DP. I'll focus on the way DfAM can take advantage of some of the unique capabilities that AM and 3DP have to offer. I personally think that the use of AM/3DP for light-weighting is one of it’s most exciting possibilities and one that could play a key part in the sustainability of design and manufacturing in the future.
        • Like
      • 3 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!