Monday, November 22, 2010

Four Wheel Drive Car Super Adddition V3

Four Wheel Drive Car Super Addition Version 3 has arrived.
Electrical Components:
- Two NXT Intelligent Bricks
- Five NXT Motors
- One PSP-Nx sensor from mindsensors
- Two NXT Light Sensors
- Two Lamps
- Wires

Physical Makeup Highlights:
- Four Wheel Drive
- Four Wheel Steering
- Four Wheel Independent Suspension
- Two Gear Transmission

That is distributed as follows. Three NXT Motors are connected to one Intelligent Brick, and they all work together to drive the input to the transmission. The transmission is operated by a fourth NXT Motor, driven by the commander NXT Intelligent Brick. That brick also controls the steering motor and the lamps, which are on front and serve as headlights. It is also connected to the PSP-Nx and should be connected to the two light sensors, which should serve as rear lights.

I think that there was slippage in the transmission when just a bit of pressure was applied to the car (it drove onto a rug). However, that was just its chassis without its bodywork, there will be more weight now that the bodywork is added. I was more worried about the eight tooth gear that the transmission-driving motors turn.

Nato

Wednesday, November 10, 2010

I really, really need to make a 4X4X2X2 Jeep V2 soon. I really, really need to make a four wheel drive car super addition V3 soon. There's so much I need to do and so little time. But, anyway,
I want to make an update of this project, 4X4X2X2 Jeep V2. I have a list of goals for aV2:

No Power Functions motors or batter box - two NXT Intelligent Bricks
Three NXT motors for the drive
Two NXT motors for independent from each other front and rear steering
One NXT motor for a two-gear transmission
Weight of the vehicle not resting on the driving axles (I'm sort of thinking turntables)
No lights this time...maybe.
Sensors - I'm thinking one ultrasonic, two touch, one PS2-NX, one Acell and one Compass. Which leaves me two ports left. Power Functions lights, maybe....that's not too bad of an idea.
Greenish-black color scheme
Autonomous or remote controlled modes
Faster and more powerful than its predecessor

I'm thinking bigger than before. 4X4X2X2 Jeep's chassis seems (through the pictures) absolutely tiny in relation to what it did.

Nato

Buggy NXT-Remote and Engine Gear-Up

I ran the buggy off of NXT-Remote in a few of the previous days. NXT-Remote is a great program that allows you to run a vehicle-like robot off of a Bluetooth connection with your computer. It worked pretty well for the buggy. Also, I geared up the fake "engine" so that the pistons turned faster. Just a quick update.

Nato

Thursday, November 4, 2010

"NXTIzed" Buggy

First of all, thanks to this project for the idea for the "NXTIzed" word...I think that it is very neat. I infer that it basically means that the construction you have is a Lego set with some of its moving parts motorized by NXT motors and controlled by a NXT Intelligent Brick. And that is what I did again here.....I tried to build something like the somewhat new Lego Technic set "Buggy," and then changed it to put NXT elements inside of it. I got the instructions for the set on the Lego website, and then tried to build a version of it, which was a challenging because I didn't have all of the right parts, especially parts that operated the front suspension and steering. I had to use an extensive construction of pieces, the inspiration for which I got from this project. However, it turned out all right, you can see it in the first picture. Then, I did with it what I built it for in the first place: I put the NXT inside of it. You can see the result in the second picture. Although the NXT Intelligent Brick may look a bit "raised up," I am rather happy with the result. One motor drives it, the other steers. You can see an overview of the drive and steering mechanisms in the third picture. The motor on the left in the picture turns the differential and the motor on the right in the picture goes into the 90-degree motion change that you can see (I am happy that there is no gear slippage when the front steering is not encountering much resistance, but there is some with resistance), which then ran down a central shaft to where it goes through more gears and eventually, to the rack and pinion steering system. The other side of the differential is connected to a mechanism (in the current buggy, I replaced the two darker gray knob gears to a larger and a smaller gear) which operates the pistons on the fake "engine" quite like in the original set. The original set had no differential, the "engine" was one stud lower and the gearing was different. The construction the rear differential is set up on moves up on down on the two motor's axles and a suspension piece about the same position it was in in the original set gives it a bit of back suspension. It also has independent front suspension as well as front wheel steering through the two front wheel setups.

Nato