Lego 42209 full remote control with PoweredUp

[grum64]

I’m amazed you managed to cram so much into something of this size. Very impressive.

[MarGo]

The list of parts needed would help the most. I mean all parts needed that are not included in the original set. Can you list those?

[Appie]

Took a while to do it, but I finished the Stud.io file for my PoweredUp modded 42209: https://www.dropbox.com/scl/fi/21n7a9za4qd1z113nrhur/42209-Complete.io?rlkey=v34usx3elijzz6bj532gskd3z&st=sznimknd&dl=0

The front is 95% identical to the set. Main difference is that I added my mod for the boom. The RC mod works with the original boom, but you will have to adjust bucket tilt and boom while going up and down like you would with the set. That's not an issue with the movement mod. I decided to have the file show some sub builds to make it easier to build it from just the file (since instructions might never happen ) and a completed model for reference besides it.

Another thing for reference is the wiring, it's tightly packed, so I hope these photos help:

 

The 2 wires closest to the wheel are the L-motor wires. One goes to the top of the hub and 1 at the bottom. And obviously the same for the M-motors:

 

L-motor wires need to be tucked away like this to not touch any gears and then route them towards the rear under the L-motors and above the M-motors:

 

The tile above the gears from the M-motors is to protect the wires

Placing the wires like this will avoid them touching the tyres even when the pendular axle is tilted.

Or you can just have them hang at the top over the hood (L-motors) at the rear as a quick method. Your call 

 

If anybody decides to build it: enjoy 

Edited December 31, 2025 by Appie

[2GodBDGlory]

Nice work, that looks very compact!