57 votes
Accepted

Can LEGO City Powered Up trains be automated?

I've been exploring this recently, and I wanted to share my experiences in the hopes that they are useful to others. There are a few ways this can be accomplished. Some are possible out of the box, ...
jncraton's user avatar
  • 40.3k
36 votes
Accepted

How does the motorized lighthouse rotate continuously without tangling the wire powering the light?

This required a clever design and one novel element. The power for the light comes from the very bottom of the model where a battery box is stowed inside the mountain: The wire leaves the mountain ...
jncraton's user avatar
  • 40.3k
32 votes
Accepted

How can I motorize the Hogwarts Express (76423)

There are number of ways to accomplish this. The locomotive traditionally provides the power for a train, so that is a natural place to start. Unfortunately, this locomotive is difficult to motorize ...
jncraton's user avatar
  • 40.3k
19 votes

Is there an API for the Duplo 10874 train set?

There is now official documentation for the Bluetooth protocol used by the Powered Up product line: https://github.com/LEGO/lego-ble-wireless-protocol-docs The community has created some tools to ...
jncraton's user avatar
  • 40.3k
16 votes
Accepted

Multiple Powered Up trains on 1 Bluetooth controller?

Each train needs the following two components: Hub Train motor I'll assume you purchased a second set of these to convert your 9V train with, since you're asking how to control both trains using the ...
LegoSonicBoy's user avatar
  • 2,988
15 votes
Accepted

What electronics are inside the LEGO Powered Up hub?

The bulk of the space inside the Powered Up hub is consumed by the housing for the 6 AAA batteries. A small portion of the top of the hub contains the main printed circuit board. Here's how it looks ...
jncraton's user avatar
  • 40.3k
13 votes
Accepted

Alternative to LEGO CONTROL+ app

There is an alternative app called BrickController 2. This open source software is available for both Android as well as iOS. This application is actively developed and its maintainer can be reached ...
Alex's user avatar
  • 23.2k
12 votes
Accepted

What is inside the LEGO Powered Up M motor?

Let's take a look. The first step to disassembling the motor is removing the small Philips screw on the bottom: Now there are a pair of gray tabs in the back white section that we need to release. I ...
jncraton's user avatar
  • 40.3k
12 votes
Accepted

What is inside the Technic Powered Up XL motor?

I was curious about this, and TLG was willing to provide me with one of these motors, so I opened it up. I was able to get the outer shell off by cutting down the 4 tabs on the outside. This motor ...
jncraton's user avatar
  • 40.3k
11 votes
Accepted

Where can I find documentation on the LEGO Wireless Protocol for Powered Up devices?

LEGO calls this communication protocol the "LEGO Wireless Protocol" (LWP). The documentation is publicly available at https://lego.github.io/lego-ble-wireless-protocol-docs/. There is also a GitHub ...
David Lechner's user avatar
10 votes
Accepted

Are there Powered Up compatible connectors available?

There do not appear to be any compatible connectors available currently. You can obviously splice cables from the official components, but that's expensive and makes those components unusable. I hope ...
jncraton's user avatar
  • 40.3k
10 votes

Options for powering Winter Holiday Train

If you want to “turn on and forget” you might want to look into obtaining a circle of old 9V track (metal rails produced by LEGO until 2007) and a power supply, plus a 9V train motor. It will not be ...
Phil B.'s user avatar
  • 16.9k
10 votes
Accepted

Difference between the "Simple Medium Linear Motor" (45303) and the "Medium Linear Motor" (88008) Powered Up motors

The main difference is that the 88008 Medium Linear Motor includes a rotation encoder with 1° resolution. Otherwise it weighs a bit more (34g vs 43g), is a bit slower (380 rpm vs 255 rpm) but also ...
zovits's user avatar
  • 16.2k
10 votes
Accepted

What's inside the non-Bluetooth Powered Up hub?

We can begin to explore this part by carefully removing the top cover to reveal the PCB: On the left, we can see a current-limiting thermistor (MF-MSMF075). On the right, we have a pair of Powered Up ...
jncraton's user avatar
  • 40.3k
9 votes
Accepted

What internal electronics does LEGO Boost use?

Here's what the main board in the Move Hub looks like from the top: And bottom: The Move Hub includes the following hardware: Motors The two built in motors are fairly standard DC motors. They ...
jncraton's user avatar
  • 40.3k
9 votes
Accepted

Is it possible to non-destructively open the SPIKE Prime smart hub?

No, but the damage can be limited and is not externally visible. I don't know the technical name, but each of the 4 corners are held in place with these fasteners: Using a tool of the same diameter (...
David Lechner's user avatar
9 votes
Accepted

How to dump the micropython filesystem from the SPIKE Prime (and Mindstorms v4)?

Using rshell I've managed dump the micropython filesystem of my hub after updating it to v1.0.03.0034-c3879ab. rshell connect serial /dev/ttyACM0 115200 rsync -a /pyboard ~/spikefw Note: These ...
gpdaniels's user avatar
  • 398
9 votes

Is there any difference in the power, wheel, and track technology between 2018 trains and 2022 trains?

Most of essential bits are the same and used in all 4 sets: Train motor Straight track Track switch Driving wheels attached to motor The only difference is in wheel used for cars. Instead of using ...
Alex's user avatar
  • 23.2k
9 votes
Accepted

Lego colors that the powered up color sensors can detect

Official Sources The LEGO Shop page for the Color & Distance Sensor (88007) says: Detect 6 colors and objects within 5 to 10 cm range with this robot toy accessory for kids. Since this one is ...
David Lechner's user avatar
8 votes

Is there an API for the Duplo 10874 train set?

Official docs: https://lego.github.io/lego-ble-wireless-protocol-docs/ https://github.com/LEGO/lego-ble-wireless-protocol-docs Discussion: https://www.eurobricks.com/forum/index.php?/forums/topic/...
handle's user avatar
  • 181
8 votes

60197 Passenger Train control problem

I thought I’d update you on the situation for anyone else in a similar position. I got in touch with Lego via email, it took a while for them to get back due to the COVID-19 pandemic, which is totally ...
Tim Forsyth's user avatar
8 votes
Accepted

How deep can the axle go in the Powered Up L motor?

That is only 1 stud deep. So an axle of 5L always sticks out 4 studs
Joost's user avatar
  • 8,023
8 votes
Accepted

Is the LEGO train motor 88011 waterproof?

LEGO's electric or electronic parts are usually not waterproof, with a small subset that was explicitly designed for such use in a few nautical-themed sets between 2004 and 2007. These motors feature ...
zovits's user avatar
  • 16.2k
7 votes

Hacking the Bluetooth motor in the motorized LEGO® DC Super Heroes 76112 App-Controlled Batmobile

There's a node.js library that can connect to the Move Hub and control attached peripherals: https://github.com/nathankellenicki/node-poweredup This should allow you to write scripts and programs ...
jncraton's user avatar
  • 40.3k
7 votes
Accepted

Can the Powered Up app be used to directly control the Boost Move Hub?

As of the Powered Up app version 3.0, this is possible. Old answer: As of August 2018, this is not possible. However, TLG has stated that they plan to add more compatibility to the Powered Up system,...
jncraton's user avatar
  • 40.3k
7 votes

Are there additional motors and/or sensors that can be used to extend LEGO Boost?

I've tried attaching one of the Powered up motors from the batmobile set (76112) This motor looks identical to me as the WeDo motor (although brickset and bricklink don't list them as identical at the ...
Michael Verschaeve's user avatar
7 votes
Accepted

Which resistor value is used for which motor in Power Functions 2.0?

M Motor (Powered Up/WeDo 2.0) The M motor has a 2.2kΩ resistor between pins 5 and 6. Pin 6 is connected directly to pin 3. LED Lights I don't own any lights yet, but according to this post, they ...
jncraton's user avatar
  • 40.3k
7 votes

Are there Powered Up compatible connectors available?

Appears you can purchase them on AliExpress, here's some of the vendors I found: here here here "10Pcs/lot Programming Series Robots Model Building Blocks Education Steam Connector Cabe Parts For ...
Geordie's user avatar
  • 171
7 votes

Can LEGO City Powered Up trains be automated?

If you don't want to touch the original hardware, you can replace the smartphone with something else like an ESP32. https://github.com/corneliusmunz/legoino This would require some programming ...
Bart's user avatar
  • 71
6 votes
Accepted

Has anyone tried putting the Powered Up system in the Christmas train?

Haven't done the 10254 yet with powered up, but have converted several other trains... The train motors have the exact same dimensions and the powered-up smart hub has the same dimensions as the ...
Michael Verschaeve's user avatar

Only top scored, non community-wiki answers of a minimum length are eligible