Questions tagged [power-functions]

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

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2
votes
2answers
75 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
142 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-...
5
votes
1answer
1k 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 ...
3
votes
1answer
85 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
2answers
7k 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
91 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?
15
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2answers
976 views

Is it possible to add the power functions to Western Train Chase?

I recently got the Red Cargo Train and it's a great Lego set but a Cars themed train going around my Christmas tree would be even better. Has anyone gotten the power functions to work on the Western ...
-1
votes
1answer
298 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.
5
votes
1answer
469 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 ...
7
votes
1answer
174 views

AA Battery Packs 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 ...
4
votes
1answer
346 views

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

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: ...
3
votes
1answer
113 views

What sets are these electrical parts from, dark grey bases and remotes with orange and yellow buttons?

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.
3
votes
1answer
111 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?
1
vote
1answer
482 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
1k 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
2answers
800 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 ...
2
votes
3answers
536 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 ...
3
votes
1answer
421 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 ...
5
votes
1answer
294 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" ...
4
votes
2answers
947 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 ...
3
votes
1answer
225 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 ...
2
votes
1answer
60 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
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2answers
65 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.
12
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1answer
13k 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 ...
3
votes
1answer
48 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. ...
4
votes
2answers
409 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 ...
1
vote
1answer
43 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.
13
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3answers
13k views

Which is faster: M motor or XL motor?

I understand that the M motor has an adequate amount of speed, and the XL motor is best known for its torque. But is the XL motor really faster than the M motor? Or is it the other way around? I am ...
1
vote
0answers
52 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 ...
5
votes
2answers
659 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 ...
1
vote
2answers
114 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 ...
14
votes
1answer
5k views

Can I use a generic (non-Lego) transformer with a rechargable Power Functions battery?

I've recently ordered a LEGO® 8878 Rechargeable Battery Box: I was wondering if I really need to get the (rather expensive) LEGO® Power Functions Transformer or if I can substitute a (cheaper) ...
0
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2answers
258 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
377 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 ...
4
votes
1answer
140 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
286 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
votes
2answers
121 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.
2
votes
1answer
203 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: ...
4
votes
1answer
744 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
421 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
97 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
179 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
974 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
66 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.
15
votes
4answers
33k 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
155 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
3answers
764 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 # ...
10
votes
1answer
6k 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 ...
3
votes
2answers
381 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 ...