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NXT 4WD with Operational Dashboard |
One NXT module is the Remote Control Gun. The other NXT module is
build in the booth of the car. When you are driving the Car the Dashboard in
the Control Gun is really working. The Car has the same dashboard,
synchronised via the Bluetooth connection which is used for controlling the
Car also.
Main features: ·
Highly Flexible Suspension with two turn tables
inside Chassis. ·
Ultra Sonic distance check with: Ø Automatic Distance
Control (ADC) Ø Emergency Braking
Assistance (as part of ADC) Ø Collision Prevention
Assistance (CPA) ·
4WD with 2 XL-Motors on 1 NXT-Output port for High
Power. But be careful! The power is higher than the strength of the gearing
when putting the car to extreme tests… as you can see at your right hand. ·
Automatic Front and Tail Lights ·
Automatic Steering direction Set-Up (added in v1.1
software). The front wheels will search the centre-position automatically. ·
Speed measurement at Rear Axle ·
Full Functional Dashboard with indicators for Motor
Power, Speed, Gear Box position, Fuel (Car Battery) and Distance control. ·
Programmed in NXC for NXT 1.0 with Firmware Version
1.04 in CAR and v1.07 in RC-Module ·
Automatic Bluetooth communication setup. Using NXC
System Calls in RC Module. See the NXC Source Code for more details on this. ·
Synchronous Program Start-up (Car software is
starting automatically) ·
Compressed (packaged) data transfer of 8 variables
between RC-Module and Car to allow highly responsive car movements and
accurate readings on both dashboards. Remote NXT: ·
Sensor 1 = Touch, for Braking and Forward /
Reverse gear ·
Sensor 2 = RCX-Rotation, for light weight
proportional speed control. ·
Sensor 3 = RCX-Rotation, for light weight
proportional steering. Car NXT: ·
Sensor 1 = RCX-Rotation, for speed measurement on
rear axle.. ·
Sensor 2 = Ultra Sonic, for distance checking.. ·
Output A = NXT-Motor for steering. ·
Output B = 2 XL-Motors (Front & Rear axle
with differential) ·
Output C = Front- and Tail lights on/off. |
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NXT Test Car With BT-Control |
This car has the basic Lego NXT Technology as used with the NXT 4WD
Off Roader with Bluetooth Remote Control Gun. Especially made available for
those who like to test-drive with the Dash Board in the Gun without making
such a complex Off-Road car.
< Full Function Dash Board > In contradiction to the final Off-Roader Car this Test Car has: ·
Light weight! So build for
high speed in stead of much power. ·
No 4 wheel drive, but rear
only. ·
One NXT Motor on the
rear-axle instead of 2 XL motors ·
Speed measurement with
Tacho Meter in NXT Motor (No extra RCX Rotation Sensor) ·
Direct steering (no gear
rack steering). ·
Ultra Sonic Sensor
pointing in steering direction. Since this car is fairly speedy the Ultra
Sonic distance check in the actual driving direction comes in very handy
here, providing: ·
Automatic Distance Control
(ADC) ·
Emergency Braking
Assistance (as part of ADC) ·
Collision Prevention
Assistance (CPA)
·
Sensor 1 = Touch, for Braking and Forward /
Reverse gear ·
Sensor 2 = RCX-Rotation, for light weight
proportional speed control. ·
Sensor 3 = RCX-Rotation, for light weight
proportional steering. Car NXT: ·
Sensor 2 = Ultra Sonic, for distance checking. ·
Output A = NXT-Motor for steering. ·
Output B = NXT-Motor for driving. ·
Output C = Front- and Tail lights on/off. (Not
mounted here) |
Not yet |
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NXT Eye – Ear Battle |
How do you respond fastest? Using your Eyes or Ears? Try this Lego
Mindstorms NXT Single Brick Project for a start! And discover how much faster
you react on one of the two! This programme is made with NXT-G. It measures response times in
milliseconds and keeps track of the fastest times for both Eyes and Ears. If
you try to cheat you will have to wait a little longer before the action
comes! See if your parents can beat you! Guess not… During development of this small program it appeared that the LCD
display causes a response delay by itself. So this programme corrects the LCD
delay by subtracting the LCD delay from the Player Response Time. The audible
.rso file play causes no (measurable) delay as the selected sound starts with
a high volume wave at once… NOTE: This NXT-G programme uses a
Custom Block “DisplayBig4” to display the Large Digits on the NXT Screen. You
will have to download this Block, download the corresponding “Ric-files”, and
put them in your NXT-G Programming environment on your PC first. The Large
Digit Software in NXT-G is using the NXT-Mini-Blocks form Lego.com. You will
need these as well. At the right-hand side you’ll see the links for this
stuff. Take a look on the Dutch page
(at the bottom) if you want to see where I have installed those files on my
computer. For those who do not use NXT-G there is an Executable .rxe file
available as well. |
n/a |
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PIMPED 8297 Lego Off Roader |
Yes, you will recognise this model as the Lego Technic 8297 Off Road
car. But this is not a normal 8297. It is thoroughly PIMPED! This car has: - a complete new roof with Spoiler, Air
Inlets, Antennas and Six Rally Lights - Widened windscreen - Protective Side Bars and extra Bull Bar at
the front - Exhaust pipes - A turning steering wheel in a restyled
dashboard - Metallic look with Black details instead
of grey - Transparent motor block - Two Infrared Sensors in the roof - Two extra motors for remote driving &
steering |
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NXT SAFE The Ultimate Lego Safe |
v Large Digit display
(using Custom Digits, and MyNumOut routine) v Outside dimensions
38x38x38cm, creating 30 Litres of
internal storage space v Internal vertical
safety bars prevent stone walls to be disassembled v Automatic un-Locking
/ Locking of the vault (Motorized lock) v Automatic opening and
closing door (Motorized door) v Automatic burglar
alarm (using HiTechnic Acceleration
Sensor) v Variable un-locking
code, set by user during locking. v Note:
If you start the software for the 1st time, the lock in the door
must be pulled inside the door completely… (left-hand state) After that the
lock position is automatically stored in a file every time again, to overcome
power-off situations. |
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X-Treme Off Roader Direct Drive Infrared Controlled |
Each rear wheel has a build-in Power
Function XL Motor (# 8882).
In this model the IR-Receiver for the Left Wheel is internally
modified. The wire to pin #2 is
exchanged with the one to pin #3.
This causes the motor to turn in the opposite direction. Set both receivers onto the same channel (1 to 4) and off you go! |
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Lego NXT Lap Timer |
This lap timer measures your race track records in hundreds of
seconds. Each race track has its own light sensor… The red light of each
sensor reflects on the wall in the middle of the road. When a car passes the
NXT detects a reduced reflection and will display the Lap Time of the passing
car. Each player has his own timer. When you break the overall track record
you hear the Trumpets “Tatatataaa” celebrating your victory. The software is written in Not eXactly C. I used the same principle
for displaying large numbers as with the Slot Machine which was written in
NXT-G, so I had to write a NXC routine for those large numbers again. See
“NXC MyNumOut” and also download the Large Digits. Tip! For those who do not have a NXC
Compiler installed, they can use the executable .rxe file and place it
directly onto the NXT Module… Tip! Don’t forget the large digit
.ric files, otherwise you will see nothing. Tip! The wall in the middle must
touch the road surface to avoid light peeking from one side to the other. If
there is an opening between the two sensors then one passing car will
influence the light in the other sensor as well, causing erroneous lap times. |
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Marble Play ground |
For the kids, around 7 years old. This 80 centimetres high marble play
ground has two runways carrying the marbles back to floor level. First you
put the marbles on top by hand. The second run starts when the marble
elevator throws the marbles on top of the second runway. The thread is
created using the parts of the Bull Dozer set 8275 (year 2007). The thread is
powered by one older type 9v Geared motor. Can you manage the marbles just as
fast as the machine does? Try it yourself! |
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Lego NXT Slot Machine |
This Casino Slot Machine (Fruit Machine) accepts real credits. The display
shows how many credits you have gathered. One spin costs 10 credits. Press
the Yellow
Button
and it starts the machine rolling. Now just wait until it stops. The Red Buttons can hold the
selected reels for you, for one turn. A winning fruit combination will
instantly be paid back to the player, not in credits but in cash!. The
returned money (or Poker Chips) is dropped in the basket below.
This slot machine contains two Lego Mindstorms NXT modules,
communicating through Bluetooth channels #0 and #1. NXT-2 is handling all
player activities. It has 3 motors for the reels and 4 touch sensors (RCX
type) for the player buttons. NXT-1 is the master of the credits, the
cashier. It accepts the coins or chips, keeps them in the safe, passes the
credit value of the coins or chips to NXT-2 (channel #0) and immediately
starts paying the Price Money when a WINNING COMBINATION has emerged. It has
3 motors for handling the cash and light sensors for detecting the coins or
chips.
At the left: the players display showing your Credits and the Reel
Hold status. At the right: the hidden cashier status information, showing the
actual cash, the real profit (of the owner of the Slot Machine, not the
player) and more! The display routines requires home made RIC files, to be downloaded
from this website. Special thanks to Andreas Dreier for his perfect nxtRICedit utility! The Large Digit Software in NXT-G is using the
NXT-Mini-Blocks form Lego.com. You will need these as well. |
Requires unofficial parts in
your LDraw library |
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CASH UNIT inside NXT Slot Machine |
The Slot Machines comes in two versions. The version type depends on the
inside Cash Handling Module. The Cash Unit handles Euro Coins: Building tip: Use a rubber band to hold the coin shafts against the “coin shaker”. |
Requires unofficial parts in
your LDraw library |
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POKER CHIP UNIT inside NXT Slot Machine |
The Chip inlet at the front of the Slot Machine is of course a bit
larger than in the Euro Coin version, but the machine is very much the same.
See the MLCad file or Guide in PDF format for the construction differences. Building tip: Use a small rubber band to keep the Chip-Pay-Out-Detection pins (RCX
Rotation Sensor) close to the Chip Dispense openings. |
Requires unofficial parts in
your LDraw library |
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You
might change the sizing of the cash containers (two square shafts) and the
dispenser opening if you want to use an alternate currency. The building instructions
are based on the Euro Coin sizes. On request I programmed a NXT-1 SW version
to handle $10c and $25c coins! 
