imurvai

There are another IR emitter harwares from the IRDroid guys: http://www.irdroid.com/irdroid-usb-ir-transceiver/ This is an USB IR emitter but I don't really know how hard would it be to fit it to an android phone. Obviously the phone's USB should support USB OTG but this is quite common nowadays. http://www.irdroid.com/irdroid-wifi-version-3-0/ This one however is using WIFI, so the IR emitter could be decoupled from the phone and should be working out of the box. I haven't tried these two though.

Hi, I started developing such an app for my android phone. Actually I managed to communicate with the PF receiver, even the servo is working OK proportionally. I also created my own transmitter using 2 leds and a 3.5 jack plug. The only drawback is that it only works within 30-40cm. This is a significant limitation for a remote controller so I temporarily gave up this development. Anyway there has been already such an app in the play store: https://play.google.com/store/apps/details?id=com.designame.droidpf But I didn't manage to get it working :) I also tried this hardware to amplify the audio out with no luck: http://www.irdroid.com/ For some reason the signal was not recognized by the PF receiver coming out from this amplified device. I also gave a try to this one: http://www.dx.com/p/lx-b3503-bluetooth-v3-0-wireless-audio-receiver-black-171089#.U613gPmSz08 I wanted to put it next to the PF receiver with my audio-to-IR converter to be able to control the Lego using bluetooth but unfortunatelly no signal was coming from this transmitter. The headphone is working ok, but the IR converter is not. I assume there must be some protection in it avoiding the converter to work. Maybe if I have some time I'll continue the research... :)

Hi Efferman, As I can see you're using only one gear reduction on the steering. I always have problems setting the gears to be able to drive straight. So normally I have to add an additional gear reduction to compensate the first one. Don't you have similar problems with this steering layout?

"I have too much time for Lego, so I'm getting bored of it..."

Well, if you turn it by 90 degrees then you do nothing to solve it :) You need to turn it by 360/12 left or right (depends on the orientation). If possible leave a 1 stud hole on the steering axle to be able to slide the 12T to and you can adjust the steering rack after putting together the whole steering mechanism. The best would be the ability to calibrate the servo somehow. It would solve problems when the gearing ratio should be changed.

Hmm, your mod made me wanna build it :)

2: 2 4: 2 9: 2 14: 2 22: 2

I was thinking about it too. The main problem is the L motor is one stud longer than the M motor so the back of the body would need some redesigning. And you're right, most probably less gearing-down would be enough using the L motors.

I just came across another solution for devices without built in IR transmitter: http://www.irdroid.com/ It's a bit more complex but certainly doesn't harm the audio out and should be compatible with the other app (DroidPF).

I found this one recently: http://www.designa.me/DroidPF/home.html I also tried to make the IR transmitter according to the instructions but my first attempt failed :)

Ok, I just uploaded the lxf to brickshelf: http://www.brickshelf.com/gallery/imurvai/bobcat/bobcat.lxf Some comments regarding to the lxf: - The LAs are not connected but I think it is straightforward how to link them - There are some items next to the vehicle, actually I wasn't able to connect them, for some reason the LDD didn't allow me to do that. - Maybe there are some missing pins :) - Apart from the issues above I think one can easily build it.

Yes, it was my concern too, but it turned out it works really well. Hahh, that's cool :) Anyway I almost finished with the LDD file. Where do you think I can upload it?

No, one motor drives the two wheels on the left and another motor drives the two wheels on the right. You can see it on this pic:

Thanks for your replies. - I didn't measure how much it can lift exactly. Maybe half a kilogram or so. - Yesterday I started making the lxf in the LDD but it'll take a while to finish since I have very limited time nowadays (family...) In the worst case I'll take detailed photos on the vehicle when taking apart.

Hi Guys, Let me show you my newest MOC, a skid steer loader (or compact loader): Features: - All wheel drive with 2 PF M motors - Arms: 1 PF M motor, 2 big LAs - Bucket: 1 PF M motor, 2 mini LAs More picture can be found on my BrickShelf page: http://www.brickshel...ry.cgi?f=534051 And a short video on it:

Hi, I like this model very much and decided to motorize it again but this time with hiding the battery box and the IR receiver in the body. Only the driving and the steering are motorized now. Here is the result: http://www.brickshelf.com/gallery/imurvai/42000PartialRCMod/dsc_0964.jpg http://www.brickshelf.com/gallery/imurvai/42000PartialRCMod/dsc_0969.jpg http://www.brickshelf.com/gallery/imurvai/42000PartialRCMod/dsc_0973.jpg http://www.brickshelf.com/gallery/imurvai/42000PartialRCMod/dsc_0974.jpg http://www.brickshelf.com/gallery/imurvai/42000PartialRCMod/dsc_0966.jpg And a short video on it:

Hi, Here is my new 9395 full RC mod. The main goal was to keep the original look besides the functionality. Steering: PF servo Propulsion: PF M motor Winch: PF M motor Lever: PF M motor

If you are building according to the official instructions then the answer is no. The motor only operates the little pump or the winch on the front of the vehicle or the turntable at the back.

Hi, In my 42000 RC mod the axle of the CV-joint very often slips off the bevel gear of the differential. Did you experience such bad behavior? I'm thinking of replacing it with the normal universal joint. Anyway it looks cool in full black :)

Hi everyone, This is my Lego 42000 Grand Prix Racer full RC mod Features: - 2 L motor for driving the rear wheels - 1 servo motor steering with working steering wheel - 1 M motor for wing adjustment - 1 M motor for opening the engine cover http://www.brickshelf.com/gallery/imurvai/GrandPrixRacerRCMod/img_20130325_211618.jpg sorry, I accidentally post the previous one only with one picture. so, here are some more: http://www.brickshelf.com/gallery/imurvai/GrandPrixRacerRCMod/img_20130325_211802.jpg http://www.brickshelf.com/gallery/imurvai/GrandPrixRacerRCMod/img_20130325_211651.jpg and a short video:

The the one hand the original front suspension didn't allow me to build a 4 wheel drive car and I didn't manage to drive the front wheels using the independent suspension anyhow. On the other hand the original rear suspension wasn't able to move sideways, I mean the two rear wheels could only move with each other at the same time and I wanted to change it to a "real" suspension. Using the ball joints was a kind of convenient choise.

Hi all, This is my 8081 Extreme Cruiser MOC. I built it without having the original set so that's why there are some differences on the car's body comparing to the original one. Features: - full suspension - 4 wheel drive - 1 PF L motor for driving - 1 PF servo motor for steering