Mindstorm:Alpha Rex

Posted by Aftuz On 5/18/2010 11:03:00 PM 22 comments

It's the 4th and the last challenges from Lego which is the humanoid type;Alpha Rex.

Well,maybe it's the coolest sample from Lego (and the most boast of from Lego). its also disappointing me with a lot of flaw part.Not to mention that Alpha Rex just dragging it legs to walk.Well,as I said before,it just samples and we must learn to accept it.If you've dissatisfaction with it,use your creativity and go make it yourself.That's what the Lego want actually.

Difficulty levels::bright-star::bright-star::bright-star:  Read more,:-)





To make a complete Alpha Rex,it require 4 parts to build it (Legs,Arms,Head and Sensors).But don't worry.Once you finished the legs and arms,it'll be no sweat to make the head and sensors.

The first problem I had is,the hand not move smoothly.To encounter that make sure you make the A motor power is 60%.Don't make the motor power to high or you'll break the gear or the worst : motor.



Got problem how to connect the A move blog to the sequence beam(a white stick with a hole)?

I got stuck with it for hours and maybe its so easy as the Lego  doesn't write it in the instruction
To Lego-I'm not smart enough to figure it out myself:angry:

Just press the SHIFT button and while hold it,click the left mouse and drag it to connect the sequence beam.


Before running the program,make sure you make the right hand(with color sensor equipped) pointed forward.The best one is to make the bar (stick or whatever) that attached to the left hand pointing to you (270").Turn the black gear on the right side of its back to change it.

Maybe you noticed Alfa Rex is steering a little to the left while walking before asking the green ball.

This caused by the C move block to make the Alpha Rex walk.

Note:The C motor move first to different the C motor (left foot) and B motor (right motor) position.It'll make the walking motion when the "CB move block" in action



But don't be annoy with it.It'll steer to the right back after you give the right ball.With this,it'll look like walking on the straight line.











Ok,here how it should work,according to the test guide instruction:
1:Before running the program,the Alpha Rex's hands should be closed and pointed forward.Put your hand in front of the Alpha Rex and it should start walking.


Ok,could you make the Alpha Rex's hands closed and pointed forward?I couldn't make it and wasting  time finding the mistake.Then,I realize something from the video.

    





See?The right hand obviously open when pointing forward.:angry:

Ok.ok..next.Alpha Rex should be walking when appointing your hand in front of it.Then,stop,and ask the green ball.If you give the right ball it;ll start "dance".

Actually instead of dancing,it'll walking forward.Look the program back.It'll never dance.







Well,enjoy my Alpha Rex fashion show smile rvmp






          

Despite it flaws,love Alpha Rex  and before I "kill" him to make another projects,I'll teach him a "real dance" .Don't worry,Alpha Rexsmile rvmp

P/s: If you got any question or opinions to share,leave it a the comment section.smile rvmp


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22 Response for the "Mindstorm:Alpha Rex"

  1. rizputra7 says:

    hebat2...agak2 boleh main bola tak?

  2. Aftuz says:

    haha..boleh kot.

  3. Anonymous says:

    Hi
    thanks very much for this great post!
    One question for you - I'm just a beginner with the Mindstorm. I'm trying to build the Alpha Rex, but it seems to require some pieces that I don't have in the box (these missing pieces are not in the user guide pictures either). Could that be possible? Did you have any missing pieces? For example, if you have the Build-AlphaRex.pdf the piece on page 32 isn't there. On page 37, the 2 long pieces (length 12) - I only have one of those in my box. It's very frustrating!

    thanks

  4. Aftuz says:

    Hi.Thanks for reading it.
    There are 2 kind of Mindstorms kits..NXT2.0 8547 and 8527.Maybe you have the Mindstorms 8547 kits.The 8547 only have one rode that size 12.

    The pdf files is referring to the AlphaRex2 which is using the NXT Mindstorms 8527 parts so that explained why you've thought there's "missing parts"

    You should refer to the instruction guide in the Mindstorm software.That's the Alpha Rex which is using the Mindstorms 8547 parts.Gud luck! :D

  5. Anonymous says:

    Thanks for the reply! Yes, I do have 8547, so that explains why the PDF was wrong. I'll take another look on the software CD, I didn't spot the instruction guide the first time.

    Thanks so much!!

  6. Anonymous says:

    Hello,
    Ref : Alpha Rex 8547
    Very very interesting post providing lot of usefull details that help to succeed. Congratulations.
    I am newbee with 8547 and has read first the manual and build the suggested primary constructions.
    Maybe I am wrong, but I can't find the software to download for running/walking the Alpha Rex?
    Thanks so much for all your inputs. Rgds

  7. Aftuz says:

    U must install the software first which is included in the given cd.You can find the instruction to program it on the right side of the software.

  8. Anonymous says:

    Dear Aftuz,
    You are right!!!! For any irrational reason, I was locked/focused on the HW setup in the menu and missed the SW section.
    Thank you again for efficient help.
    Rgds.

  9. Anonymous says:

    how do you make Alpha Rex 8547 turn?
    why is he veering to the right?

  10. Anonymous says:

    i accidentally deleted a sound file. any idea how to retrieve it?

  11. Aftuz says:

    how do you make Alpha Rex 8547 turn?
    I've not make it turn yet,but I think its almost impossible or very hard to do it.try make only one of the leg move forward.

    why is he veering to the right?
    left leg moving faster than the right.Maybe you need to slower the pace.
    In programming make sure you start with the left leg and end with the right or opposite of it.so same leg not moving twice when looping.

    i accidentally deleted a sound file. any idea how to retrieve it?
    find it in given cd or
    reinstall the software can do the job

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  16. drica says:

    thank you for the SHIFT tip! I was also stuck there!
    congratulations on the post!!!

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  22. Anonymous says:

    Hey, I-m having a problem with alfa rex arm, it doesn't move and it makes a high piched sound. I checked to see if it was the wires, but it isn't.
    What do I do?

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