Nxt Program Alpha Rex

Posted on 09.02.2019by admin

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How To Program Alpha Rex

Holdon.nbc demonstrates a simple wait loop which substitutes for the NXT firmware's missing wait opcode. NXTcmps.nbc and cmpstrac.nbc (written by Nitin Patil) demonstrate reading data from the new compass sensor. Motormux.nbc is a sample program (also written by ) that shows how to use the motor multiplexer from mindsensors.com. • - This zip contains LASM, NQC, and NBC versions of a MIDI conversion. It also contains compiled versions of these programs. The.rcx can be downloaded to an RCX brick and the.rxe can be downloaded to the NXT brick.

• Turn the light to blue. • Spin motors C and B backward this time.

10 Responses to “LEGO Mindstorms NXT Alpha Rex building instructions / plan” By Miriam Heppell on Apr 5, 2012 Reply. Thanks for posting this blog on Lego Mindstorms Alpha Rex, really helped frustrated 12 year old son and we printed a copy. How to Make a LEGO Mindstorms NXT Alpha Rex Avoid Objects. Programming the LEGO Mindstorms NXT robots is a fairly simple project, which uses a visual style. If you have made a robot before, you likely have some experience working with the programming language. To program your Mindstorms Alpha Rex, you will need to. Program the humanoid robot Alpha Rex. Building instructions They have 3 big mindstorm sets the NXT 1.0 the NXT 2.0 and the EV3 MINDSTORM Below is a picture of lego mindstorm 2.0/Alpha rex.

NXT 1.0 Projects by Program Complexity If you want to learn more about programming using the NXT-G programming system, then you can open and study the programs for these projects after building and using the project. You will see examples of several of the NXT-G programming techniques in action including Loops, Switches, Data Wires, Sequence.

Here’s the Alpha Rex in action.

• - This zip contains an extremely cool space invaders game. It is written by Arno van der Vegt (avandervegt@##NOSPAM##home.nl).

If you set the loop to infinite, the robot will walk forward indefinitely and turn when it sees obstacles. You can also set it to perform this only a few times.

• - This zip contains a short but very cool program written by which draws a series of lines on the NXT screen. It demonstrates using arrays as well as using the compile-time function evaluator with PI, sin, and cos. • - This zip contains a really great program written for the NXT Alpha Rex robot. David Wallace (dww.roboticsDELETETHIS@gmail.com) is the author. This code demonstrates many important NBC programming techniques including multi-threading, using preprocessor macros, using subroutines, controlling motors, reading various sensors, and displaying graphics on the NXT screen. It's an awesome program! • - This zip contains a library of useful routines for NBC written by Joe Kinsella.

This makes it so that the robot will randomly turn left or right when it detects an obstacle. Place the entire program inside a loop. If you set the loop to infinite, the robot will walk forward indefinitely and turn when it sees obstacles. You can also set it to perform this only a few times.

Then, the Robogator waits until an object is within a certain distance from its 'eyes.' Once it 'sees' an object, it lunges a couple of times and then 'runs,' alternating each leg. The jaws are also programmed to detect a nearby object and then begin snapping, which will continue until the object moves away. Screenshot of LEGO Mindstorms NXT 2.0 software by Wally Bahny for TechRepublic •. LEGO Mindstorms: Color Sorter code This is a large segment of the Color Sorter version 1 code. In this code, motor C (the one powering the holding area) is turned to make a ball fall under the Color sensor. Depending on the color, the bins are rotated (motor B) until the appropriate bin is underneath the output chute, at which time the ball is dropped.

Build the LEGO Mindstorms Alpha Rex model according to the directions. The directions for the model are listed under References. Connect the LEGO NXT brick to your computer using the Bluetooth or included USB cable. Run the NXT programming software. Program three subroutines, one for walking forward, one for turning left, and one for turning right. To walk, use move blocks to program one leg to move and the motor on the back to tilt in the direction of the opposite leg.

• Turn the light to blue. • Spin motors C and B backward this time. • Spin motors C and B in such a way that makes the model turn right. Screenshot of LEGO Mindstorms NXT 2.0 software by Wally Bahny for TechRepublic •. LEGO Mindstorms NXT 2.0: Programming the Robogator This slide contains most of the programming for the Robogator. Here you can see two independent programming paths: one for the legs and one for the jaws. The legs are programmed to start in their 'normal position' by rotating until they find it, if necessary.

Us_interval.nbc demonstrates how to specify the frequency of ultra-sonic pings sent out by the US sensor. Us_1shot.nbc sets the US sensor into its 1-shot mode where it pings only on command and writes 8 distance values to its buffers. Ustest.nbc demonstrates reading various standard I2C sensor string values from the US sensor. • - This zip contains some sample programs which control a motor using the built-in tachometer.

Place a switch block on the end of the line. Program the block to randomly choose one of the two paths which it selects as an option. Place the left and right turn blocks on the two branches of the switch block.

This is repeated indefinitely until the user presses the gray button. Screenshot of LEGO Mindstorms NXT 2.0 software by Wally Bahny for TechRepublic •. LEGO Mindstorms NXT 2.0: Alpha Rex code This is a very small segment of code that sets up Alpha Rex's movement and reactions. In this segment, you can see the two sound tiles separated by a 0.5 second wait tile.

The 1,156 byte mtest.nbc is the hand-written NBC equivalent of mtest2.nbc. The 274 byte mtest.rxe is the compiled executable which is functionally equivalent to mtest2.rxe. Mtest.rxe was compiled using the NBC command line compiler and the mtest.nbc sourcecode. • - This zip contains 4 small sample programs that demonstrate communicating with the standard LEGO UltraSonic (US) sensor. Us_off.nbc shows how to turn off the ultra-sonic pinging that starts automatically each time you turn on the NXT.

NXT 1.0 Projects Fun Projects for your LEGO ® MINDSTORMS ® NXT! NXT 1.0 Projects by Category Fun and Games Music and Sound Cars and Vehicles Weapons Machines Sensor Systems Animals Get nxt programs.com on CD! NXT 1.0 Projects by Building Difficulty No Building Building Program (none) (none) Easy Building Building Program (none) Intermediate Building Building Program Advanced Building Building Program (none) (none) Expert Building Building Program NXT 1.0 Projects by Program Complexity If you want to learn more about programming using the NXT-G programming system, then you can open and study the programs for these projects after building and using the project. You will see examples of several of the NXT-G programming techniques in action including Loops, Switches, Data Wires, Sequence Beams, Logic/Range/Compare, Math, and Variables. The more complex programs use many or all of these, so start with the easy ones and work your way up.

This is where it says 'Green Please' and then waits for a ball to be placed in its hands. Depending on the color, Alpha Rex will either drop the ball where he stands (red, yellow, or blue) or walk forward several steps before dropping the ball (green).

• - This zip contains an extremely cool space invaders game. It is written by Arno van der Vegt (avandervegt@##NOSPAM##home.nl). • - This zip contains an RPGReader.sys replacement program written in NBC.

Best regards • By DonaldTinlin on thanks so much bro im a struggling high school student and im really grateful for these instructions helped my grade a ton • By Kathie on Thanks for risking life and limb to put poor old Alpha Rex up. I was wondering why I could not find his recipe.

That version drew frames at about 7 seconds per frame. This version draws about 10 times faster, although the speed depends heavily on the number of live cells on the screen. • - recently posted a very cool program which lets you play tic-tac-toe on your NXT.

Other files are custom blocks utilized by this main file. The software is provided as-is without any kind of warranty or responsibility. Feel free to use & modify:).

Michael (Australia) • By Sven on Vielen dank, war mir sehr hilfreich!! Best regards from Germany;)) Sven • By Rolf on Thanks for your work.

• - This zip contains a library of useful routines for NBC written by Joe Kinsella. They demonstrate useful techniques for multithreaded programming, subroutine parameter passing, accessing sensors, playing sounds, and controlling motors. • - This zip contains several sample programs for the NXT.

• - Back in early August, Takuya Matsubara posted a video on youTube of him playing a game sort of like tetris on an NXT. It's a really cool example of what you can do with NBC! • - This zip contains math.nbc which is a file you can #include in your own programs. The author is Tamas Sorosy. It defines some terrific math functions: SIN, COS, ASIN, ACOS, and SQRT.

*** DUE TO POPULAR DEMAND YOU CAN NOW DOWNLOAD THE SOFTWARE PROGRAM FOR THIS ROBOT. PLEASE SEE BELOW FOR DETAILS. *** This is sample of custom software I've made for Alpha Rex model.

The thing worth noticing is how it distincts between obstacle detection and end move gesture detection, as both are detected using ultrasonic sensor. The distinction is made basing on the distance - very short distance is interpreted as 'stop moving' gesture, longer distance as obstacle. Turning head during moving helps notice obstacles at angles. The 'hello' trick uses colour sensor. To download the software, please use this link: The main file is ArexWalker.rbt inside. Other files are custom blocks utilized by this main file. The software is provided as-is without any kind of warranty or responsibility.

I tried mimicking the original program while adding some of my own. In this case, the AlphaRex “talks” when starting up and stopping. It always walks forward until it encounters an obstacle in which case it will attempt to turn left/right or ask for a random (ball) color. I wanted to add some more routines to fine tune the Alpha Rex but I’m beginning to get errors while transferring the compiled program to the NXT brick even though there wasn’t any compilation error and I’m pretty sure I still have enough space in it. If you’re interested in giving my program a test-drive, you can download the zip file containing the source codes and sound files. You may need to free up some space in your NXT brick, the sound files are already around ~40KB. After compiling and running the program in your NXT brick, press the center button again to start/stop Alpha Rex.

• By petit on gros lu • By SSN on Hello Sean, thanx so much for posting the instructions for Alpha Rex for the 8547 kit. My son was disappointed too that the box did not come w/ those instr. You save us a lot of hunting & phone calling. 🙂 • By William on Hi Sean, Thanks so much for going through the effort to post up the instructions, you’ve made life easier for my ten-year old son and we greatly appreciate it. Wish there are more civic minded folks like you around, this world would be a much better place! Regards, William from Asia • By Michael on Thanks Sean, Using your instructions to build the Alpha Rex, as we speak. Thanks for your instructions!

• Wait a half second. • Spin the A motor, which is the firing mechanism.

The controls can be dragged into the design area. On the right are the existing four projects grouped by category, which can be expanded by the downloadable ones. This area contains the build and the programming instructions. The larger left pane at the bottom is where the programming tiles are configured, and the smaller right pane shows some rollover help.

The compiled.sys executable is ~2.5kb rather than ~14.3kb. The behavior of NXT Programs executing on the brick using this replacement is not exactly the same as when the original RPGReader.sys is used but it is very close. • - This zip contains a version of the classic life simulator written in NBC. I rewrote a version that was originally mentioned in the forums. That version drew frames at about 7 seconds per frame. This version draws about 10 times faster, although the speed depends heavily on the number of live cells on the screen. • - recently posted a very cool program which lets you play tic-tac-toe on your NXT.

Screenshot of LEGO Mindstorms NXT 2.0 software by Wally Bahny for TechRepublic •. LEGO Mindstorms NXT 2.0: Shooterbot, program phase three Finally, we program phase three. Each item below corresponds to a programming tile. • We add an infinite loop -- this will not stop until the dark gray button is pressed on the programming brick. • We tell Mindstorms to turn the green light on.

This zip contains a slightly tweaked version of his original sourcecode. I shortened the beep and made it a bit quieter. • - Back in early August, Takuya Matsubara posted a video on youTube of him playing a game sort of like tetris on an NXT. It's a really cool example of what you can do with NBC! • - This zip contains math.nbc which is a file you can #include in your own programs.

How To Program Alpha Rex

In this segment, you can see the two sound tiles separated by a 0.5 second wait tile. This is where it says 'Green Please' and then waits for a ball to be placed in its hands. Depending on the color, Alpha Rex will either drop the ball where he stands (red, yellow, or blue) or walk forward several steps before dropping the ball (green). Screenshot of LEGO Mindstorms NXT 2.0 software by Wally Bahny for TechRepublic.

Incredibly cool code. Definitely worth checking out.

• Wait a half second. • Spin the A motor, which is the firing mechanism. • Turn the light to blue. • Spin motors C and B backward this time.

Program the block to randomly choose one of the two paths which it selects as an option. Place the left and right turn blocks on the two branches of the switch block. This makes it so that the robot will randomly turn left or right when it detects an obstacle. Place the entire program inside a loop.

Us_1shot.nbc sets the US sensor into its 1-shot mode where it pings only on command and writes 8 distance values to its buffers. Ustest.nbc demonstrates reading various standard I2C sensor string values from the US sensor. • - This zip contains some sample programs which control a motor using the built-in tachometer.

On the left are the controls grouped by function. The controls can be dragged into the design area. On the right are the existing four projects grouped by category, which can be expanded by the downloadable ones. This area contains the build and the programming instructions. The larger left pane at the bottom is where the programming tiles are configured, and the smaller right pane shows some rollover help. There is also a Remote Control feature accessible from the menus at the top that allows control of a simple model, such as the Driving Base, via the arrow keys and space bar.