technical

f you just told him that the first place then people like me don't say stuf i did No worries; just to clarify, I wasn't being sarcastic here. To me, motorizing the model without anyone's directions was the most fun. If instructions had been available, I wouldn't have used them. Not as fun. So really do hope Jay engineers a solution on his/her own and has as much fun doing it as I did! ? Much greater feeling of accomplishment.

I never made instructions or digital models of what I did. I'm not holding anything back or being unhelpful. I simply don't have the information, and have disassembled the model completely to build other stuff. I never keep anything assembled. Don't throw shame on me for that.

Instructions do not exist. Have fun figuring it out :)

Very cool, Tadzik! Nice work. Can you show us more detail? What's inside? Very cool DennyK! A dumpster hauler! Great mechanism. Now all you need is remote control, and perhaps motorize the vehicle movement!

For the 42078 B-model Mack LR garbage truck, I've installed Power Functions control for driving, turning, operating the dumpster fork, and opening the rear door. It can pick up, dump, and return the dumpster by remote control. I also added rear suspension, headlights, and countless other small improvements. It's a handsome model and a lot of fun to play with. I think this type of model embodies the best of Technics -- it has many functions you can actually play with. Motorizing it makes it so much better! Along with the RC functions, I made subtle changes to the design and improved color matching. I changed the grille and headlights. The headlights are now clear bricks (3065) so PF LEDs can shine through them. The turn signals also illuminate. I added this deflector on the top of the cab with spare 42078 parts. Many Mack LR configurations include this. The compactor body detaches cleanly from the chassis with 5 pins. Visible here are 3 of the 4 PF motors on the model. The "engine" in the cab does operate by motor as well by linkage to the drive train. This is a tight spot. Both the main drive and fork drive assemblies collide here. The gap on the right is for the steering motor wire. The red pin helps hold the box on. The battery box slides in. Looking into the ceiling of the compactor box, visible are the PF receivers and M motor driving the rear gate. Rear gate drive assembly. The suspension operates. You can see there is some pre-load to the shock absorbers because the box is so heavy. Authentic City of Madison, Wisconsin badge on the door. Authentic City of Madison, Wisconsin badge on the door. A shout-out to Bricks & Minifigs, where I bought this set used. B&M also provided the screenprinted city logos.

Ladies and gentlemen, I present LEGO Typing Machine Mk. III. This a follow up to typing machines I built 5-6 years ago. It types my name. 100% LEGO. A dog interrupts.

LEGO truly brings the world together!

Until there are private security contractor minifigs, this will have to do.

I run the EV3 software on Win8 i5 laptop and it's okay until the programs start getting long. Then it can be unbearably unresponsive. It was better for me when I break up the program into several My Blocks

Power Functions brought me in, Mindstorms EV3 keeps me.

Today I ordered $90 worth of batteries and charger for my EV3. I went through 70 AA batteries in 2 months, so it's time to put a stop to that waste.

Whaaaaat! This is the best and most intricate detail I've seen on this forum so far. I'm quite familiar with this car and have worked on Audi 5 cyl in S4 and 5000; the engine bay is anatomically correct and you've even got the cylinders at a slant. How long did it take to build this?

Thanks everyone! The eBay listing was wrong.

I bought this blue item advertised as "Mini Pump Double Valve" on eBay http://www.ebay.com/itm/301854575416 It does not seem like a pump to me. It works like an actuated piston. Is the blue cylinder supposed to be a pump?

Correct

It'd better have a firefighter's pole!

Hi all. Here's a brief video of the EV3 floor roving robot I've been working on for the past few days. It's pretty crude but can go a long time without getting stuck. It makes use of one distance scanner in three positions by using a clutched IR sensor, has two bumper sensors that are padded by shock absorbing springs to reduce impact on the touch sensors. Behind the bumper is mounted a color sensor on the front that is used to measure near distance and ambient light. It appears to flash because it's rapidly switching between measuring these two things, With this sensor it can detect objects near to the ground that the main sensor peers over, and also back out of shadows so it doesn't get under furniture. Working on the software has been the long part as there is much debugging to do and each test run can take a long time depending on what I'm trying to improve. It makes decisions based on distances to its surroundings on three sides, so if it senses it's coming up on something in front of it, or a bumper strike is detected, it will choose to turn left or right depending on which direction is more open.

Haha, yes, I've owned many of those engines. My current car is an FG2 Civic, K20 2 liter with a big supercharger on it. Finished up this project over the summer. Hit 340whp, now I've got traction problems and need more tires :-) I'll post up some photos here soon.

33 year old IT manager here. Engaged, no children (ever). I also build and race fast Japanese compact cars.

Well why doesn't someone fix this problem? Everyone is telling me this has already been discussed and look at all these other complaints but there is no solution. Admin: fix the time. It is not impossible.

What's the solution? Not immediately clear from that post

The time on the site is incorrect even though my time zone is correct in the settings. The time on the site is one hour fast. Anyone else have this problem?

I made a scanner from the printer I made earlier. I drew a test page and also scanned a print I made on the same frame from when it was a printer... re-digitized. It uses the color sensor. The digitized image is saved to the EV3 memory where I can download it on the computer as shown in the last image below. It's pretty crude but it's a good proof-of-concept I could improve on. Anybody else done this?