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Questions tagged [power-functions]

A category of powered LEGO products which offer direct and remote control of action bricks.

3
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2answers
39 views

Need advice re Power Functions

My 11-year old son wants to add power to his creations but neither of us know quite how to start this new adventure. He doesn't have any Technic or Mindstorms sets. Looking through sets online, it ...
-2
votes
1answer
86 views

Has Anyone Ever Reprinted a LEGO Powered Up Connector With A 3D Printer?

Has anyone ever reprinted a LEGO Powered Up connector with a 3D printer? Currently, I'm using a modified SATA adapter for some LED lights on my train.
0
votes
2answers
102 views

Third power functions train runs backwards, why?

We have the passenger train and freight train, both run from a single controller - one through the red and one through the blue side. At Christmas we got the holiday train, and with the power ...
5
votes
1answer
192 views

Problem with running two XL motors motors

We are trying to run our Grand Prix racing car on remote control and would like to use two XL motors for the wheels. One motor on its own works fine, but when connected together the motors stop ...
5
votes
1answer
214 views

How to power up MOC-0308, based on Technic 8297?

I have built the following MOC, with details here and here. It is pretty complete, although I would have tried some servo motor for steering. But after I've finished it, I've got into trouble: ...
4
votes
1answer
120 views

Drive motor via Power Functions IR with own power source

I want to see if it is possible to drive a Power Functions motor both with variable speed and forward/reverse with my own power source. I am planning to use my own power source, an IR receiver and a ...
3
votes
1answer
235 views

Eneloop NiMh batteries not powering 42030 loader

Is it because the batteries are only 1.2V? It works fine with Duracell alkaline batteries.
4
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2answers
111 views

Is there on/off function on the 8879 IR Speed Remote Control?

Just got 8879 IR Speed Remote Control yesterday. Does it have an on/off switch? We don't see one.
1
vote
1answer
90 views

Has Anyone Motorized Ocean Explorer Set #42064?

Me gustaría saber si tiene alguien monitorizado motorized el LEGO Technic - Explorador oceánico 42064 y si es así si alguien podría pasarme las instrucciones? Muchas gracias! Google Text Translated: ...
2
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1answer
1k views

Adding Power Functions to LEGO Mack Anthem Truck (42078)

Does anyone have experience adding Power Functions to set #42078 LEGO Mack Anthem truck? It’s a Technic set, but only features manually actuated functions. I have seen it motorized on YouTube, ...
4
votes
1answer
391 views

Using the unregulated motor block and conversion cable to light LEDs

I have the following setup: It consists out of An EV3 brick A nxt to 9v conversion cable (https://www.bricklink.com/v2/catalog/catalogitem.page?P=x1676) A 20 cm 9v to Power Functions conversion ...
4
votes
1answer
116 views

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

Based on the answer here it seems that resistors are used to detect what is plugged in with LEGO Power Functions 2.0. So which resistor values (or ranges) apply to which motors or other devices? Are ...
2
votes
1answer
201 views

Confused about power functions motors 8883 and 8293

Is the motor that comes with the Technic power functions motor set (8293) and the stand alone motor 8883 the same? We have just built the LEGO Creator 10261 roller coaster set and it specifies a 8883 ...
3
votes
1answer
55 views

Is it expected that LEGO will produce small (S or XS) PF motors?

The existing LEGO PF motors are the M, L, and XL, making builders suspect that the S and even the XS names were left out and reserved intentionally for later designs. However, the M motor was released ...
3
votes
2answers
70 views

XL motor and M motor on IR receiver = same output?

I am really puzzled by my small car build with balloon tires (55976). I tried swapping between an XL and an M (PF) motor, both geared down (up?) to about the same torque (I tested by how sleep a slope ...
3
votes
1answer
781 views

What is the correct input voltage for the 9v Lego train speed regulator?

I wanted to buy a transformer for the speed regulator, so based on this image, I bought a transformer with 12V DC output. It works. However, discussing this with a fellow AFOL, he pointed out that ...
0
votes
1answer
50 views

How much do the PF XL motors help speed in the 4x4 crawler?

I'm wanting an answer if anyone has swapped the PF L motors in the 4x4 crawler to PF XL motors and if this increases the speed or not.
5
votes
1answer
945 views

How to build an automatic Lego train system?

I was wondering if anybody has ever tried using the IRLink NXT sensor to make an automated train system and if so, what kind of setup did you have to make it all work? I have been working on a train ...
5
votes
1answer
194 views

How can I improve my rackless steering design?

I am trying to build a vehicle with a sturdy steering mechanism powered by the servo motor. When I was a kid I did this all the time with a rack and pinion design, but now I don't have any of the rack ...
0
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0answers
214 views

Power function LED Lights for 42077 Rally Car

Do I need to add anything else to the power function list for the 42077 Rally Car to add the LED lights?
11
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1answer
5k views

How can I motorize 42077 Technic Rally Car with LEGO Power Functions?

The new 42077 Technic Rally Car set looks really nice, and even has a built-in steering system which can be controlled by a gear on the top. There's also a fair bit of extra room inside, is there a ...
14
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4answers
30k views

What advanced railroad features are possible with the Lego PF train sets?

I recently got my first train set, the Constitution Chase, and it has sparked my imagination for building train layouts. My 3-year-old son has a small collection of wooden trains and we enjoy building ...
7
votes
2answers
125 views

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

I want to buy two sets of the LEGO Tracked Racer 42065 so that my children can play together. I can't tell if they would be able to use the racers simultaneously. Are the IR receivers multi-channel? ...
4
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3answers
319 views

Looking for ideas to make wire connectors compatible with Lego Functions

I like to make custom battery packs for Lego Power Functions. Is there any simple way to make wire connectors? The only option that comes to my mind is to buy LEGO Power Functions Extension Wire # ...
2
votes
2answers
317 views

Can I convert my train 9V 4563 to the power function motor?

The motor of my locomotive is dead. I have two choices : repurchase it or buy a power function. It is possible of customize my train 4563 to use the power function motor ? If yes, what set to buy ? (...
10
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1answer
5k views

What IR Codes are the Power Function remotes sending to the receiver?

The PF IR Speed Remote Control (the train one) is "7 speeds" but as I turn the dial to make it go faster it's hard to tell what speed it's at. I wonder if I could setup my programmable remote so that ...
4
votes
2answers
94 views

What about Power Functions motor, S size?

LEGO Power Functions has motors in M, L and XL sizes. Usually, if someone uses this size designations, the smallest one is S. It would make sense to have them named S, M and L if there were meant to ...
0
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1answer
490 views

Power Function Converter Cable for LEGO MINDSTORMS

This is a follow up to this question: How to use Power Functions with Mindstorms EV3? The question was asked in 2013 (5 years ago). Fast forward to 2018, the product that was suggested in the answer ...
3
votes
1answer
512 views

What is the best solution to power up two 5292 buggies?

I have two buggy motors, 5292 like this: I see powering each separately and using two IR receivers soon triggers the receivers' protections and the motors are stopped. My aim is not speed, I see ...
3
votes
1answer
285 views

How should I get started with LEGO trains?

I'd like to get started with LEGO Train. I understand the PF system is The Way, and the tracks are generally mutually compatible, but the exact interplay of trains & power components eludes me. ...
12
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1answer
3k views

What are the electrical properties of electric LEGO systems?

Several electric LEGO systems exist: LEGO Trains LEGO Technic Power Functions (PF) LEGO Mindstorms (in several versions) ...? How do these systems differ in electrical properties and which systems ...
2
votes
3answers
308 views

Bucket Wheel Excavator not powering up?

I just finished to assemble the Bucket Wheel Excavator (42055) set, I inserted new batteries in the battery box and tried to power it up. The led on the battery box blinks for a millisecond almost ...
6
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3answers
2k views

Does the LEGO “Power Functions Extension Wire” (8886) work in both directions between old 9V and new Power Functions devices?

Here is the LEGO "LEGO® Power Functions Extension Wire" (8886): We can see that the left connector can connect to old 9V electric bricks or wires and the right connector can be plugged to the new ...
32
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6answers
21k views

What are the best options for building a LEGO RC car?

I would like to build a remote controlled car. And if someone already has a good solution for that I would be glad to try it. It's been a while since I had the time and material to build some LEGO ...
0
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0answers
154 views

How can I combine multiple PF XL Motors [duplicate]

I have built an enormous and heavy Lego RC tank, driven by 2 XL Motors, connected to a subtractor, one motor is for steering, the other is for propulsion. Despite having already geared down the motors ...
8
votes
2answers
3k views

Battery for Trains

For those who have tried, which one is a better option: Rechargeable Battery Box and Transformer/Charger 10VDC ($50 + $25) or AAA Battery Box and a lot of AAA batteries ($13 + ?) Obviously $75 is ...
8
votes
1answer
2k views

Can 10153 9V train motor be powered by the Power Functions Battery pack?

I am currently making the switch to Power Functions with my Lego Train collection and am wondering if I can power the old 9v motors that I used with the metal rails, with a battery box from the power ...
8
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1answer
2k views

Power Functions battery box and receiver limits

What combination of motor/Receiver/battery boxes are possible/supported? example: 2x XL motors, 1x M Motor, 1 light using 1 receiver and 1 battery box.
7
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2answers
1k views

9V Battery instead of PF Battery Box

I want to use the PF Light Unit in a small MOC. The battery box contains six 1.5V batteries and is too large. How can I use a regular 9V block battery to power the lights (and possibly other 9V ...
1
vote
1answer
288 views

Lego Technic 42048 with Lego 8293

I have seen a YouTube Video that claims the motorization of Lego Technic 42048 using Lego 8293. However, the Lego support site does not state such compatibility. I am not able to get my hands on a ...
8
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1answer
577 views

Why are there 4 wires leading to the Power Functions LEGO train motor?

Does anyone know what the wires do? If the Power Functions train motors are simple DC only 2 wires would be needed or is it more complex than that?
3
votes
1answer
69 views

Augment Lego 60139 with power functions Lego 8293?

I have the Lego 60139 set for my child. If I buy Lego 8293, will I be able to motorize the truck in 60139 set?
7
votes
3answers
2k views

Running Power Functions Train Without IR Receiver/Remote

I recently bought 10254 Winter Holiday Train and wanted to get it running around the provided circle of track. I was wondering if there is any way to do this without incorporating the IR receiver and ...
6
votes
2answers
4k views

Is the LEGO BOOST kit compatible with EV3 or PowerFunctions motors and sensors?

I'm curious if I can use my existing EV3 and/or PowerFunctions motors to extend the functionality of my LEGO BOOST set. Is this possible?
4
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1answer
101 views

What sets are these electrical parts from

I have been searching for a long time but I am struggling to find the origin for these parts. I think they are possibly Power Functions IR remotes & battery packs...? Thanks for any help.
4
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1answer
2k views

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

Basically, there are 2 different major versions of the LEGO IR Receiver, the unmarked V1 and the labeled V2. I've also read somewhere there was also a small hardware upgrade to the V1 Receiver at some ...
6
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1answer
121 views

54950c01 vs 59510c01

What is the difference between these two battery boxes, 54950c01: and 59510c01: except for the on/off button? Which electrical connectors are compatible with each of those? Is there a counterpart ...
8
votes
3answers
2k views

How to power “Power Functions” devices from an electric wall plug?

In this video showing an example of Great Ball Contraption, we can see (at 1:35) that some trains powers are used to power Power Functions motors: That must be more convenient than having to ...
12
votes
1answer
228 views

Are there any benefits to using PF motors instead of EV3 ones?

Can someone explain to me the key differences between PF motors and EV3 ones? I understand that EV3 motors are 'regulated', presumably meaning that you can control their rotational speed depending on ...
7
votes
2answers
2k views

Custom Power Functions plug design

I'm considering the possibility of making my own Power Functions-compatible sockets for a project. I'm designing a module board for a single-board-computer with motor drivers and would like to encase ...