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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 that 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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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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NXT Eye – Ear |
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 programme 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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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 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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Lego NXT/RCX Shoot Out |
Thieves just are entering a house across the street and try to steel a
car from the garage. Three gang members are walking along the street watching
for the police to come. Your job is to shoot al thieves down, within 3 minutes,
with your Rubber Bullet Police Weapon! This is my first Lego Mindstorms NXT creation [October 2006]. Since
Legacy Sensor Blocks were not yet supported, I used the old RCX to translate
the Rotation Sensor Signals to Touch Sensor signalling for the NXT. The RCX
is communicating with the NXT using the “Motor Brake” function in the RCX.
Build with 2 old type Rotation Sensors, 1 RCX 2.0, 2 Converter Cables, 1
Mindstorms NXT and 2 NXT Motors. |
some |
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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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NXT TriBot Double Vision |
This TriBot uses two light sensors to decide which way to go. When an
obstacle is detected by the Ultrasonic sensor or by touching the bumper, the
TriBot senses the light intensity from the left and right corner. The most
enlightened corner is the direction the TriBot will choose. This results in
an interesting natural route selection. |
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MINDSTORMS RCX |
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Lego Game |
Inspired by BBC’s ROBOT WARS this 1,2Kg Robot attacks its offender by
shooting the pilot out of his chair with the Puncher (15 punches per minute)
and Cyber Cannon (4 shots in 6 seconds). IR-Controlled. Automatic defend and
attack functions triggered by the touch sensitive bumper. Equipped with 1x
RCX, 3 Touch Sensors, a Rotation Sensor and 3x 9V Geared Motor. |
some |
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Cash Sorter |
This Cash Sorter shows you how much money you have! Put all your coins
at once in the red basket (right) and see how Lego Mindstorms is calculating
the total value of your cash, up to 99,99 Euro. Two motors, one touch sensor,
two light sensors and a RCX are enough to determine eight different coin
sizes and add their value on the RCX Display. |
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Disc Shooter |
See Ultimate Builders Set for instructions. Here you’ll find modified
RCX 2.0 LSC-code that enables the shooter to: - Keep on shooting during refill on the fly, |
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M.E.R. |
Nasa
Mars Exploration Rover – proto type. A |
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Pneumatic Hand |
Fully automated electric/pneumatic system with Humanoid Hand. The robotic
hand has under actuated fingers powered by pneumatic cylinders. Able to catch
a bottle of beer from the table, fill your glass and hand the filled glass of
beer over to you! Arm length 110cm, weight 3,7Kilograms. Automatically grabs objects to
500gram when detected in the hand and puts them somewhere else from 0..90° to the left or
right, at 0..50cm height. v2 is equipped with 2x RCX-Module (in Master/Slave
relation using IR-Messaging), 2x rotation sensor, 1x touch sensor, 2x light
sensor (for object detection in hand), 5x 9V Geared Motor, 4x pneumatic cylinder, 2x mini pump, 2x
large pump, Fiber optic flex cable. Use of Mindstorms Remote Control
recommended. |
Zipped |
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Police Dog |
Looks around and starts moving. Looking for suspicious objects in
every dark corner of your room. When he gets stuck, he walks out of the dark,
into the brightness, and starts his search in another dark place. Nose and
moustache are touch sensitive to react on obstacles. |
Yes |
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The CLAW |
Powerful Robotic Hand with self adaptive fingers. Each finger has its
own 9V Geared Motor, wired in a serial-parallel configuration to balance the
finger power and lower the motor currents. The arm contains two motors to
give the hand the natural freedom it requires. The RCX module keeps track of
the hand position. |
Yes |
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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! 
