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8

YES! Philippe Hurbain (Philo) has put together a great and very detailed write-up on those and many other LEGO 9V electric motors. You can find it here: LEGO 9V Technic Motors compared characteristics Your current draw for that specific motor @ 9V is: No load: 65mA Loaded (3.6 N.cm): 310mA Loaded (6.0 N.cm): 480mA Stalled (11 N....


8

Well, I opened it up without much success, and took some pictures of the process: At first I tried pushing/prying the light grey tabs away from the dark gray "bottom", but those weren't budging So plan B: wedge it apart: It was opening, but I was also distorting the plastic in the process - perhaps if I had a hot air station or something, I could have ...


7

It's the main module from Record and Play (set 4095): This part was only included in this set released in 2003. The part contains several motors and some electronics that allow you to record motor movements and then play them back. Pressing the red button would let you record movements for a maximun of 20 seconds by adjusting the motors and the green ...


6

This can be done without a caster wheel as well: Start out with a three wheeled vehicle, with two wheels in the front and one smaller wheel with less traction than the front wheels in the back. All wheels need to be fixed. One of the front wheels is attached to the motor. This might need to have some gearing to get an appropriate speed. The other front ...


5

For a comprehensive enumeration and measurements on all motors, refer to Philo's excellent page on this topic: http://www.philohome.com/motors/motorcomp.htm There are some LEGO motors that are missing from this list since they predate the 9V era, like the 4.5V motor, or the 4.5V train motor, but these are probably only of interest if you already own them, ...


5

The 12v train motor uses 2-pole 3-slot technology. Because of thinner, but longer wire which results in a greater resistance and will create higher voltage, but lower current the current output isn't enough to drive on-train lights. Since the resistance of on-train lights is constant this will drag down the generated voltage as well.


5

This part is called Micro Scout with Dark Gray Base the white version on your photo comes from 9748-1: Droid Developer Kit


3

I haven't ever used Power Functions remote-control elements, so I can't give you a complete answer from experience, but here are two simple tests: Connect the battery box directly to each motor, leaving out the remote control receiver entirely. The motors should spin when the light on the battery box is lit, and the slide switch should allow reversing the ...


3

Theoretically, in terms of power (speed • torque), the XL Motor is faster than the L Motor and M Motor. The reason being, you can gear up the XL Motor 2:1 and have the following output: running torque of ~7 N.cm & rotational speed of ~290 RPM. However, a small amount of these measures will be lost due to friction and decreased efficiency (by transferring ...


2

The adapter itself is generally called a "Molex" adapter. The one you have pictured looks similar to their Mini-Latch style. I would recommend an adapter like this. The pin spacing should be the same even if it is not made specifically for that connector. The red wire connects to pin 1 and the black wire connects to pin 2. The yellow wire is for speed ...


2

As you can see in the picture below the friction has to do with driving the worm wheels via regular gears while pushing the unit by hand and yes, I guess the gear teeth on the wheel axles could be damaged because of the gear ratio.


2

The answer to the question you linked contains the answer you are looking for: To move in one direction, send a PWM signal (1200 Hz, 0 to 100% duty cycle) on C1 and keep C2 at GND level. As duty cycle varies, servo motor will move along 7 positions on one side. See this video. To move in the other direction and reach the 7 other positions, send PWM ...


2

Smoking breadboard connectors are never a good thing - so check your wiring to make sure all is connected well. Also, make sure that you have the GND of your powersource connected to the GND of the RPi, so that all voltages are relative to the same ground potential. Finally, I'm not sure if the Servo will work with 6.5V - it has been designed to work on 9V. ...


2

One motor and a caster wheel will give you two degrees of movement but will not be steerable. If you can build a differential, then drive two wheels with the motor. If you have limited gears, then drive one wheel, have an idler wheel and a caster or simple skid arrangement. You can get more interesting behaviour by having a bumpbot, that simply reverses ...


2

The motor used in Hobby Trains is the 9V train motor. This motor is externally identical to the new Power Functions train motor, so you should be able to replace one with the other. That said, the problem with Power Functions is that where in 9V it was enough to have the train motor mounted on the train, in PF you will also need to provide an IR receiver ...


1

The retail box does not show the usual "+Power Functions" decorations on it so I doubt there are official instructions. Time to get your build on.


1

The issue turned out to be a known problem with the battery terminals in the remotes. Certain batteries would not make enough contact with the positive terminals due to a plastic piece in front of them. I did the following to fix it: Removed the battery covers from the remotes. Removed all of the AAA batteries. Inserted a small flathead screwdriver behind ...


1

With some minor adjustments, you can try adding Lego Power Functions to your Technic parts. With the appropriate parts, you can motorize your wheels with motors then remote control them with the Infrared Sensor with remote control. It would be rather tight though as sets that can allow space for these functions will show the option for Power Functions on ...


1

As Phil notes, the PF train motor is exactly what you are looking for: You'll also need one of the PF battery boxes and an IR receiver. You will need to modify the trains themselves to house the extra components and make room for the wires. In response to your second question, 9V, RC, and PF train track is all functionally identical. The only significant ...


1

In the middle "thead" all of your motor blocks are "unlimited" or "stop". These blocks change the motor state and immediately continue to the next block. These are inside a loop that loops forever, so these blocks are running continuously in the loop. The motor blocks in the top thread may have an effect for a split second until the middle thread loops again ...


1

The C1 and C2 lines are either connected to the 9V power supply or grounded because they directly drive classic PF motors and are not just used to carry commands. The 9V and GND poles also need to be properly connected because the PF servo will draw power from those. To drive any LEGO Power Functions motor using a single-board computer (Pi / BeagleBone / ...



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