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36 votes
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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
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32 votes
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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
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31 votes

How can I get my motor to line up with a linear actuator?

The axle is misaligned by half a stud, so an obvious approach to this problem is offset your motor by half a stud. The technique of offsetting bricks by half a stud is known as AZMEP (from the german &...
IvanSanchez's user avatar
  • 8,808
26 votes

If I were to make a LEGO fan how would I make it blow air on me?

A fan is just 1/4 of a drone, right? Check out this lego drone that actually flies, for inspiration. https://youtu.be/wUVvQk7XLd4 The blade part in question is 89509
Mr. Shiny and New 安宇's user avatar
23 votes
Accepted

What's inside the SPIKE Essential small angular motor?

As far as I know, this is the smallest motor LEGO has produced since the micro motor in 1993: This new angular motor is not quite that small, but it is smaller than every other motor currently in ...
jncraton's user avatar
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21 votes
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Did LEGO ever make motorised boats?

LEGO had a "Accessory Motor for Boats" included in small number of boats/sets but also released as Accessory Motor for Boats polybag (7099) add-on. Sets that included the motor in Orange are ...
Alex's user avatar
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17 votes

If I were to make a LEGO fan how would I make it blow air on me?

The easiest way to do this would be to use a motor with a high speed (or gear up a lower speed motor) and then attach one of the larger propeller elements to it. You can probably build a custom prop, ...
jncraton's user avatar
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12 votes
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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
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12 votes
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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
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12 votes

Did LEGO ever make motorised boats?

The Lego police boat (set 4010, from 1987) had a notch for fitting a motor on the bottom of the hull and it was referenced in its instructions: The instructions read, in several languages: In some ...
Rails Fan's user avatar
  • 121
10 votes
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Electric motors - what for beginning?

If you're interested in comparing motors regarding to torque and what they can deliver, I would recommend reading Philo's excellent motor comparison page which has a lot of detailed information, very ...
Joubarc's user avatar
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10 votes
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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
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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
8 votes

Is it possible to use 5 motors on an EV3 brick?

A sensor port can't directly output to a motor. The sensor drivers can't provide enough power to supply a motor. You have a couple options: Daisy-chain two EV3s together. The first can control the ...
MindS1's user avatar
  • 1,392
8 votes
Accepted

Compatibility between vintage (80s/90s) Technic and current parts (motors etc)

The motor you have linked is indeed quite old and as far as I know, not compatible with anything newer. Seeing that it works with simple DC current, it wouldn't be hard to construct a converter cable, ...
zovits's user avatar
  • 16.5k
8 votes
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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
  • 8,043
8 votes
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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
  • 16.5k
7 votes

How do I connect two models to one PF motor?

As an addition to Ambo100's very nicely detailed answer, I'd like to add one more option: If either of the two things you are powering might suffer from friction (or perhaps a child holding it still), ...
Phil B.'s user avatar
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7 votes

How can a Mindstorms robot lift something very heavy?

Pulleys and gears With a range of pulleys and gears you can build something capable of lifting as much as 100 kilos with LEGO parts, albeit at the risk of putting enormous amounts of stress on the ...
Ambo100's user avatar
  • 17.6k
7 votes
Accepted

How to get double the speed from 2 regulated EV3 motors?

By adding two motors together with gears, you have doubled the torque the motors provide. Power = torque x speed, so if you don't want the doubled power from the motors to go to the torque component ...
Phil B.'s user avatar
  • 16.9k
7 votes
Accepted

Can I still motorize Universal Building Set 8034 and other from that time with modern elements?

The length of the wire is another thing to be aware of. The wire attached to the motor in 8293 is only slightly more than 20 centimeters (might be a few centimeters more, I don't remember), you can ...
Henrik supports the community's user avatar
7 votes
Accepted

Confused about Power Functions M-motor 8883 and 8293

Yes, both items contain the same M-Motor part.
Alexander O'Mara'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
  • 40.6k
7 votes

How to make an exact 16 degree turn?

This is actually a surprisingly difficult task. If you search for similar questions over on the Robotics stack exchange, you will find very smart people who can't even get it right with thousand-...
MindS1's user avatar
  • 1,392
7 votes

I am building the LEGO 42131 D11 dozer and some of the parts are moving in reverse when testing

I had the same problem but turns out the app graphics are just wrong. Completed the build and it works perfectly fine.
Tom Wilson's user avatar
7 votes
Accepted

What is the best way to connect SPIKE prime angular motor to a wheel

TL;DR: Unless you do something quite extreme engineering, any coupling will do just fine and the motor will stall or the tire will slip before even a single axle gets to its limit. The pins have a ...
zovits's user avatar
  • 16.5k
6 votes

How to build a steerable remote-controlled vehicle with just 1 motor?

In WeDo 2.0 app "LEGO® Education WeDo 2.0" there is a complete project 12. Steer that is exactly about that When it drives forward it goes in straight line, when it drives backward it then turns to ...
Kamil Dziedzic's user avatar
6 votes

What is this 11x6 white and dark grey motorized LEGO piece with blue buttons and a transparent blue panel?

This part is called Micro Scout with Dark Gray Base the white version on your photo comes from 9748-1: Droid Developer Kit (pictures via Bricklink)
Syberion's user avatar
  • 12.6k
6 votes

How can an EV3 motor "remember" it's starting position?

The simplest way to "remember" a starting position is to make the starting position 0. You can do this using Rest in the Motor Rotation block (1). After your motors have moved (simulated by (2)), you ...
David Lechner's user avatar
6 votes

How do I connect two models to one PF motor?

Regardless of the models, you can always connect a single motor to one or more models by splitting the axle using (for example) angular wheels or bevel gears. I covered two ways of transmitting ...
Ambo100's user avatar
  • 17.6k

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