12v Motor Switch MOC > 4D Brix

Recommended Posts

Hello All,

So I've finally got my act together and started building my layout however due to space the Lego 12v points are my only option as the 9V/PF switches take to much room. However an electronic pair will set you back around £90-£110 with all the switch boxes etc. So my challenge was can I do it cheaper?

The answer was Yes.

My first design (first image) was to use the Lego servo motor as it turns 90 degrees however these are around £20, then you'd need a Sbrick or another way to control it. It works but it looks bulky. 

So as I use Ncontrol from 4D Brix, I like the interface, click options and Tom is really helpful. So after a quick chat he wrote some code for me to limit the movement to 90 degrees and I purchased a Monorail Switch. It is very simple, looks neat and above all works. You have to purchase the quad motor control module but the beauty is that this will do four switches. So if you have 4 switches you save £30 on the second pair. So your first pair will cost you £80 but the next pair will only cost £50.

This is the cost

Lego 12 Volt Points Pair @ £100

My Second Design @ £80

  • Lego 12volt points not motor > £20
  • 2x 4D Brix Motors > £25
  • 4x 1 Meter Cables > £5
  • 4D Brix Quad Control > £30

The only downside is you lose the turning  symbol but I can see that in the software so it doesn't bother me.





Edited by emm

Share this post

Link to post
Share on other sites

Hi Andy,

That's a great solution. One thought is those 4DBrix monorail switch motors should also work well for Bricktracks points when they come out, due to the technic turntable design.

Also, pretty ironic personally, because this last week I've been working on the exact opposite solution, fitting original 12v switch motors (which I have plenty of going back years) to 4DBrix switch points. :laugh_hard:

Agreed, Tom is very helpful when it comes to discussing solutions.



Share this post

Link to post
Share on other sites


Great to see you got it up and running.  I like the way you mounted to the monorail servo motor, simple and efficient...

Thanks for sharing!

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

  • Recently Browsing   0 members

    No registered users viewing this page.