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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
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
  • 16.6k
8 votes

Arduino-izing LEGO Technic - ideas for a car / vehicle to choose

I'd be tempted to use the Batmobile (76112) design: Basically, you have independent motors for the left and right wheels. This allows you to steer quickly and easily without the fuss of a traditional ...
jncraton's user avatar
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7 votes
Accepted

My 9398 crawler going in reverse way

From the power functions FAQ: Why does my Power Functions model drive backward when I want it to run forward? You can change the direction your model runs by flipping the small black switches ...
Michael Verschaeve's user avatar
7 votes
Accepted

Can I use two remote-controlled LEGO Tracked Racers 42065 simultaneously?

Yes, LEGO's Power Function IR elements have 4 different channels you can switch between with an orange slider on the receivers and remotes, so you can run up to 4 at a time.
Alexander O'Mara's user avatar
6 votes
Accepted

Running Power Functions Train Without IR Receiver/Remote

There is a fairly easy and cheap way to do this since you don't want real variable speed control. As you noted, connecting the AAA battery box directly to the PF train motor technically works, but the ...
jncraton's user avatar
  • 40.6k
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
Accepted

What LEGO Power Functions parts do I need to make an RC car?

Your assumptions appear to be mostly correct. Just for clarity, these are the minimum parts required: A battery box A motor for driving A motor for steering (unless you want to try a steer-on-reverse ...
jncraton's user avatar
  • 40.6k
6 votes

Alternative to LEGO CONTROL+ app

There is a free app called buwizz. It is a great alternative that gives more freedom, and works on Android.
André's user avatar
  • 61
6 votes

How to Motorise 42111 Dom's Charger Technic

There are several such MOCs in existence around the Internet: https://rebrickable.com/mocs/MOC-42193/Porlock/fully-rc-lego-technic-doms-dodge-charger-model-42111-with-fast-buggy-motor-lights-and-some-...
zovits's user avatar
  • 16.6k
6 votes

Motorized Excavator (8043) set alternatives

I'm afraid there is no other excavator in LEGO Technic line like 8043. It is quite unique in that it has both driving and its functions motorized. Which is why it keeps its value even on second hand ...
Alex's user avatar
  • 23.2k
5 votes

Lego® Train 60051 alternate IR remote

There are some limited options for third-party remote control add-ons but Lego doesn't license or endorse them and they're not (as far as I know) made with improved accessibility in mind. However, it ...
Mr. Shiny and New 安宇's user avatar
5 votes
Accepted

Why is the LEGO IR Receiver V2 not widely produced? Or are they?

No, the V2 receiver isn't available in any new products. It's only available in the sets you mentioned. The most likely reason it's not available in new products is that the production cost would be ...
Michael Verschaeve's user avatar
5 votes
Accepted

LEGO Submarine waterproofing functional parts (e.g. motors, RC receivers)

The method they used to secure the battery/controller was to wrap it in a sealed plastic bag, something similar to this could be done for the motors. It would be more difficult since you would need a ...
Josh King's user avatar
  • 1,911
5 votes
Accepted

Can several users control one Powered Up train using different devices?

As far as I know, this is not possible using the current stock firmware. The battery box can only pair with one device. The UI on the battery box is a single button, and for simplicity the device is ...
jncraton's user avatar
  • 40.6k
5 votes
Accepted

Arduino-izing LEGO Technic - ideas for a car / vehicle to choose

If I were you, I'd try to use a car chassis as simple as possible. This would achieve multiple goals: By using a vehicle with the least amount of complexity you can keep the price low. By avoiding ...
zovits's user avatar
  • 16.6k
5 votes
Accepted

Why doesn't my LEGO Micropython remote control program work?

You can get community support for Pybricks at https://github.com/pybricks/support. ir.buttons(1) returns a list of pressed buttons, so in this particular program if ir.buttons(1) == Button.BEACON: ...
David Lechner's user avatar
5 votes
Accepted

EV3 with 6 motors

On Powered Up hubs like SPIKE Prime, all ports are the same and can be used with motors or sensors. That means you can use 6 motors and no sensors if you need to on SPIKE Prime. On EV3, ports A-D are ...
David Lechner's user avatar
5 votes

Why is my powered up system allowing only 1 speed, & only with the remote button held down?

What you are describing is bang-bang mode. If the hub isn't connected to a smart-device running the powered-up app and the connected motor isn't a train motor, it's how a powered up hub connected with ...
Michael Verschaeve's user avatar
4 votes
Accepted

Why remote controls are seldom used in Technic sets?

Many Technic sets are small and wouldn't fit motors or need remote controls. Beyond that it is an extra expense which they need to leave out to make things available at various price points. In some ...
chicks's user avatar
  • 5,275
4 votes

Running Power Functions Train Without IR Receiver/Remote

LEGO train motors get powered using a 9V cable. Philo (who also visits this site) has an excellent site with all the features and characteristics about the PowerFunctions motor system, which includes ...
Phil B.'s user avatar
  • 16.9k
4 votes

What is this silver and transparent green electronic piece for / from

This is a Spybotics Module from set 3809-1 Technojaw T55.
Phil B.'s user avatar
  • 16.9k
4 votes

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

I designed some WeDo 2.0 models that can drive and steer using just one motor. This one uses a system of gears to alternately drive the left or right wheel of a differential drive robot, depending on ...
Daniele Benedettelli's user avatar
4 votes
Accepted

Turn on LEGO Mindstorms robot remotely

I know for a fact (from reading the EV3 schematics), the only way to turn on an EV3 is by pressing the center button. Here are some ideas to work around this issue: Create another robot that presses ...
David Lechner's user avatar
4 votes

What is the function of this device? What kit? Black remote with 5 buttons and 3 AAA batteries?

It's a Spybotics remote from 2002. It came in 4 sets, and works with the receiver in those sets. I found this page which talks a bit about them.
Alexander O'Mara's user avatar
4 votes

Can I use two remote-controlled LEGO Tracked Racers 42065 simultaneously?

Another friend in our LUG uses 4 models at a time. Two for each of her sons, one for their uncle and one for herself... She redid the models in splendid new color schemes:
Michael Verschaeve's user avatar
4 votes

How to create a "return to steering system" without using LEGO Power Functions for Technic Cars?

I won't be able to provide a complete solution for your motorization. In the past, when Power Functions system was introduced servo motor wasn't available at first and later was rather expensive. I've ...
Alex's user avatar
  • 23.2k
3 votes

Can anyone identify this dark grey remote control and receiver with yellow and orange buttons?

Bionicle manas set 8539. Top part from your foto. Bottom one.
zg0's user avatar
  • 271
3 votes

Problem with the range for controlling Sunset Cruiser 8676

I had a 8378-1: Red Beast RC (which is practically the same hardware aside from running on a different frequency) that developed a similar problem shortly after I got it. One day the receiver only ...
Alexander O'Mara's user avatar
3 votes
Accepted

Two separate functions of 5282 RC remote?

With only using existing non-modified LEGO parts a mechanical solution with a servo motor, two polarization switches and cluch gears is thinkable, but this is all really cumbersome... It's a bit ...
Michael Verschaeve's user avatar

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