Questions tagged [power-functions]

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

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7
votes
1answer
330 views

Does a LEGO Technic Power Functions L Motor work with a v1 receiver?

Does a LEGO Technic Power Functions L Motor work with a v1 receiver? I really want to know it, because then I know what motor I should buy.
6
votes
0answers
108 views

LEGO or LEGO-compatible control for SG90 servo?

Is there a way to control three-wire servo (for example the SG90 servo or other common models) by LEGO Power Functions or CaDA power function?
3
votes
1answer
90 views

Can I control PF M-motor with PF train controller?

Can I control Power Functions M-motor from 8293 set with remote control from 60051 train set? It seems from the picture, that the sockets fit into each other. So if I have the train set, and want to ...
4
votes
1answer
53 views

Can I use the EV3 IR Sensor with a power functions remote?

In other words, I want to control my Lego Mindstorms EV3 robot with my Lego Power Functions remotes. The EV3 has an IR sensor, and the PF remotes are IR Remotes, but will they work together?
6
votes
1answer
84 views

Fix Power Functions cable near connector (L motor)

We have a broken cable on the power functions L motor. I've fixed an M-motor before in the engine, but this time the cut is near the connector. Unlike the M-motor, this connector doesn't have the ...
4
votes
1answer
190 views

Battery Box 8881 not providing enough power

I bought a used 8881 battery box. It doesn't appear to work with anything. When I test it with a multimeter, I only get a voltage reading of ~0.5V. I tested each of the batteries, they each come out ~...
4
votes
3answers
200 views

Will non-Lego remote controls work with Lego IR receivers?

I bought a KAZI model of a Chinese bullet train CRH400F a month back and want to use a remote control. I bought an IR receiver and remote control, but the other IR receiver is lost in the post. So I'm ...
-3
votes
1answer
106 views

How long does it take a M-motor to go 1 googol rotations?

How long would it take a Power Functions M-motor to turn 1 googol times? I have tried figuring it out with a calculator but I was confused.
3
votes
1answer
152 views

Does LEGO sell a DC relay for Power Functions?

I’d like to use a signal from a (5V) littleBits circuit to control some (9V) Power Functions motors. Does LEGO sell or recommend a DC relay to facilitate this sort of thing? If the answer is no, I’d ...
0
votes
1answer
147 views

Using Power functions to teach robotics

I am a robotics engineer and I would like to introduce and teach my girlfriend to robotics. I would like to first get her the material for the first project. I would love to build a small Lego car ...
4
votes
2answers
180 views

Does remote control 8879 work for winter holiday train?

Can anyone tell me if the remote control 8879 will actually stop and start the 10254 Winter Holiday Train set?
0
votes
1answer
521 views

Can the Hogwarts Express train be motorised? [closed]

Can a Power Functions motor be fitted into the LEGO "Hogwarts Express" train? I have a spare motor and battery box and would like to fit them into this train.
2
votes
2answers
274 views

Can Power Functions components work with the RCX?

I don't have the RCX, and neither do I have any PF stuff, but as they both have wire connectors which are almost identical, I'm thinking that they can both work together and are compatible. Is this ...
2
votes
1answer
291 views

PF: One battery block, one IR receiver, two motors on same port

I have a heavy train with Power Functions. Now I want to use two train motors on the single loco. But as I understand, this is not possible with original LEGO parts? Do I need something like a three-...
4
votes
1answer
4k views

LEGO Powered Up substitution for Power Functions Motor Set 8293

We have a Volvo EW160E, for which the product description says Upgrade with the 8293 LEGO Power Functions motor set (not supplied) for a fully motorised boom and working lights. Well, looks like ...
2
votes
1answer
116 views

Does Power Functions 88002 fit a gray-era train and run on gray-era tracks?

Is the Power Functions Train Motor (set 88002) the right height for a gray-era train (set 7745)? Does the Power Functions Train Motor run OK on gray-era tracks?
2
votes
2answers
830 views

Fixing a not working Power Functions L motor

Four of my PF L motors don't work. How could I make them work again? I didn't find any information about L motors, only M and XL.
3
votes
1answer
63 views

Power Function IR Remote always emitting after putting batteries

My PF IR remote led indication light is constantly on after I put in new batteries. It stay on without me touching anything. A quick check with my phone camera showed that the IR emitter is emitting. ...
2
votes
1answer
83 views

How to prevent PF M-motor from springing back

I'm currently building a car with a simple 2-speed remote controlled synchronized transmission, shifted by a PF M-motor. Everything is fine except for one thing, the transmission driving ring is ...
2
votes
1answer
302 views

Problem-shooting on 8070 "Super Car" with Power Functions

I have recently bought a used Lego Technic car (8070 Supercar). It was not fully built, and from the instructions I learned that it was fully built except for approximately the last 10 steps. I ...
6
votes
1answer
925 views

What is the quietest LEGO motor?

What is the quietest LEGO motor? I am trying to make a sort of LEGO dolly for filming videos, but the motors emit a lot of sound. I noticed the train motor is quieter than the other motors I have, but ...
1
vote
1answer
66 views

Can a v1 PF reciever power an XL motor and servo?

I have a v1 PF receiver but don't want to pay $35 for a v2 receiver and I was wondering if a v1 receiver can power a single XL/L motor and a servo.
2
votes
0answers
74 views

Makeblock and LEGO PF cable synthesis

My 10yo son and I have ventured into the realm of taking our LEGO hobby up a notch with robotics. We have built the makeblock mbot and adapted LEGO bricks and want to incorporate the Power Functions ...
1
vote
2answers
193 views

Is there any easy, documented or official way to replace pullback mechanism with Motor Set 8293

There are many Technic cars with a pullback mechanism, like 42059, 42073 or 42072. Is there any systematic, easy, documented or official way to replace the pullback mechanism with the LEGO Technic ...
5
votes
2answers
2k views

What is a good third party battery box and receiver?

I got the LEGO 4x4 crawler for my birthday and I love it. But there is one slight thing which I hate: it has terrible range when using it outside. I know there is BuWizz which is a third party ...
4
votes
2answers
2k views

Advice on Power Functions for an 11-year-old?

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 ...
-1
votes
1answer
422 views

Can you print a LEGO Powered Up connector with a 3D printer?

Has anyone ever printed a LEGO Powered Up connector with a 3D printer? Currently, I'm using a modified SATA adapter for some LED lights on my train.
2
votes
2answers
8k 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, ...
2
votes
1answer
238 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: ...
5
votes
1answer
456 views

Are there any difference between the Power Functions 88003 and 99499 L motors?

I am planning to attempt a couple of RC MOCs and was looking up the power functions L motor on BL and found that there are actually 2 types of the L motor, namely the "88003 Power Functions L Motor" ...
6
votes
1answer
647 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 ...
3
votes
1answer
111 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
1answer
510 views

Confused about Power Functions M-motor 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 ...
0
votes
1answer
70 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.
3
votes
2answers
218 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 ...
1
vote
2answers
453 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 ...
12
votes
1answer
15k 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 ...
7
votes
2answers
164 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
votes
1answer
963 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
2answers
545 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 ...
1
vote
1answer
1k 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 ...
4
votes
3answers
983 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 # ...
3
votes
2answers
1k views

Can I convert my train 9V 4563 to the Power Functions motor?

The motor of my locomotive is dead. I have two choices : repurchase it or buy a Power Functions replacement. It is possible of customize my train 4563 to use the Power Functions motor? If yes, what ...
4
votes
1answer
3k views

What is the best solution to power up two 5292 buggy motors?

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
555 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. ...
2
votes
3answers
665 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 ...
0
votes
0answers
495 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 ...
9
votes
1answer
3k 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?
1
vote
1answer
515 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 ...
3
votes
1answer
123 views

Augment LEGO City Mobile Command Center 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?