Questions tagged [power-functions]
A category of powered LEGO products which offer direct and remote control of action bricks.
137
questions
1
vote
1
answer
104
views
I want to get started making GBC modules. Which powered bricks standard to choose in 2023?
There seem to be two competing standards for powered LEGO modules in 2023.
Power Functions
Powered Up
I have read that Power Functions may be retired soon, but can easily work in a standalone ...
- 135
4
votes
1
answer
138
views
Wobble problem with the PF L motor
So I got my hands on a used 42095 LEGO Technic set that I wanted for a long time. After disassembling it and testing PF for the first time, I have noticed that one of the motors is extremely wobbly, ...
- 71
6
votes
2
answers
108
views
How to run Power Functions LEDs from a 12v supply?
I am considering building a train that uses a 12v motor from the 1980s and Power Functions LED lighting. For this to work it would be necessary to run the Power Functions LED set from one of the 12v ...
- 403
4
votes
1
answer
227
views
Is there a Good Replacement M Motor?
I teach robotics with technic parts and M motors. The motors I have bought on Ebay burn out quickly and fit axles poorly (either too tight or too loose). It is difficult to teach when students' motors ...
- 41
0
votes
0
answers
119
views
Motor stalls and starts smoking after roughly 5 seconds
I have done everything that I was supposed to (with the setup), and when I press the button to supply power to the motor, it stalls (sometimes), and when it does spin, I can see a small puff of white ...
- 1
5
votes
0
answers
145
views
IR remote 8879 - cannot control speed of the motor
I got the 7938 train set for my kid.
I hook up the battery to the receiver and try the IR remote 8879 with it.
The motor starts running/spinning, but I can not control the speed with the orange "...
- 51
1
vote
0
answers
100
views
Power from single XL-Motor to both rear and front axles [closed]
I have a single XL motor and I would like to make my small car a 4WD one.
Currently, it is just front-wheel drive.
Any good instructions on transmitting power to rear wheels as well?
- 111
6
votes
0
answers
267
views
Fix Lego M Motor - The hooks aren't budging
I have a Lego M motor that is broken. I'm following the instructions here to try to fix it but the little tabs that hold the plastic frame together just won't budge no matter how hard I'm pushing them ...
- 1,119
8
votes
1
answer
336
views
Motor problems in 60051
The motor in my High Speed Passenger Train set (60051) has stopped working properly. I just put brand new batteries in and it acts just like if they were worn. Moreover, the little brown capacitor ...
- 181
8
votes
1
answer
420
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.
7
votes
1
answer
543
views
How do I build this robot car?
I want to start using more LEGO Technic, but I'm not sure what the best way is to buy the parts without breaking the bank.
I'd really like to make a robot like the ones shown in this video.
Making ...
- 203
6
votes
1
answer
256
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?
- 61
3
votes
1
answer
109
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 ...
- 245
4
votes
1
answer
164
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?
7
votes
1
answer
527
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 ...
- 243
4
votes
1
answer
234
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 ~...
- 181
4
votes
3
answers
624
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 ...
- 49
-2
votes
1
answer
131
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.
- 69
4
votes
1
answer
284
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 ...
- 450
0
votes
1
answer
155
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
2
answers
426
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?
- 41
0
votes
1
answer
692
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.
- 31
2
votes
2
answers
540
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 ...
- 2,112
2
votes
1
answer
480
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-...
- 123
5
votes
1
answer
7k
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 ...
- 151
2
votes
1
answer
137
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?
- 123
2
votes
2
answers
2k
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
1
answer
132
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. ...
- 31
2
votes
1
answer
93
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 ...
- 965
2
votes
1
answer
353
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 ...
- 163
6
votes
1
answer
2k
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 ...
- 965
1
vote
1
answer
83
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.
- 965
2
votes
0
answers
102
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 ...
- 121
2
votes
2
answers
275
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 ...
- 440
5
votes
2
answers
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 ...
- 53
6
votes
2
answers
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 ...
- 61
-1
votes
2
answers
637
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.
- 11
2
votes
2
answers
9k
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, ...
- 95
2
votes
1
answer
292
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:
...
- 21
5
votes
1
answer
596
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" ...
- 51
6
votes
1
answer
852
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 ...
- 5,235
3
votes
1
answer
125
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 ...
- 999
3
votes
1
answer
572
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
1
answer
75
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.
- 51
3
votes
2
answers
233
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 ...
- 31
1
vote
2
answers
699
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 ...
- 23
12
votes
1
answer
16k
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 ...
- 13.3k
7
votes
2
answers
185
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? ...
- 173
4
votes
1
answer
1k
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 ...
- 10.9k
4
votes
2
answers
665
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 ...
- 1,409