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News 4 dof simulator?

Discussion in 'New users start here - FAQ' started by alexcc, Mar 2, 2016.

  1. momoclic

    momoclic Active Member

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    Très bien, je pense que ces dernier moteurs seront parfait et éviteront l'usage d'un ressort.
    Quelques remarques cependant,
    - Positionne les moteurs afin que les manivelles puissent toutes tourner sue 360° cela facilitera la mise au point et évitera de la casse.
    - Déplace le point pivot avant, du triangle rouge du dessin original de mon concept, le plus en avant possible sur la plateforme mobile, tu y gagneras en qualité de déplacement latéral.
    - Attention à la longueur (hauteur) du même pivot avant, si il est trop court tu risques des interférences entre le plateau et l'arrière du triangle.

    Okay, I think these latest engines will be perfect and avoid the use of a spring.
    Some remarks, however,
    - Position the engines so that all the cranks can rotate 360 ° sue this will facilitate this development and avoid breakage.
    - Moves the pivot point forward, the red triangle from my original concept drawing, far forward as possible on the mobile platform, you will gain there as lateral movement.
    - Attention to the length (height) of the front pivot even if it is too short you risk interference between the tray and the back of the triangle.
  2. alexcc

    alexcc New Member

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    Hello

    Thank you for your response, I'll take them into consideration.

    However for the moment, I had a little setback engines I chose are not available for Canada, so I tried contacted today to 2 new seller for equivalent engines.

    Do you know, all the same, vendors that books in Canada?

    Thank you, I will give you the latest updated news.

    Bonjour

    Merci pour vos réponse, je vais les prendre en considération.

    Cependant pour le moment, j'ai eu un petit contretemps les moteurs que j'avais choisi ne sont pas disponible pour le Canada, donc j'ai tenté de contacté 2 nouveau vendeur aujourd'hui pour des moteurs équivalents.

    Connaisez-vous, tout de même, des vendeurs qui livres au Canada?

    Merci je vous tien au courant des nouvelles.
  3. alexcc

    alexcc New Member

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    Did anyone ever buy on the site of alibaba?

    Est-ce que quelqu'un a déjà acheter sur le site d'alibaba?
  4. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    Yes a lot of guys here use the site Alibaba.
    • Agree Agree x 1
  5. alexcc

    alexcc New Member

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    Hello,

    I don't have a lot of time to put on my simulator but the engine problem is solved. Engines and power supply 24Vdc are commended.

    Meanwhile, I'll start working on the code for the Arduino and sabertooth 2x60A.

    Bonjour,

    Je n'ai pas eu beaucoup de temps pour mettre sur mon simulateur dernièrement mais bon le problème de moteur est réglé. Les moteurs et les bloques d'allimentation en 24Vdc sont commendés.

    En attendent la commande, je vais commencer à travailler sur le code pour l'arduino et le sabertooth 2x60A.
  6. alexcc

    alexcc New Member

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    Hello everyone,
    There is already a moment that I have not had time to work on building my simulator and at the same time to write about what form.

    I finally got all the pieces I ordered.

    Bonjour a tous,
    Il y a déjà un moment que je n'ai pas eu le temps de travailler sur la construction de mon simulateur et du même coup d'écrire sur ce form.

    J'ai finalement reçu tous les morceaux que j'avais commandé.

    20160609_235336.jpg 20160609_235401.jpg 20160609_211618.jpg

    Here are pictures of all the gear.

    Voici des photos de tout le matos.

    The assembly also started, here is a picture of supperior plate manufacturing, and another picture to show of what the show will look ascemblage.

    L'assemblage à également commencer, voici une photo de la plaque suppérieur en fabrication, ainsi qu'une autre photo pour montré de montré de quoi l'ascemblage aura l'air.


    20160609_211548.jpg 20160615_000325.jpg

    • Like Like x 1
  7. momoclic

    momoclic Active Member

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    Tu es bien parti pour avoir un super 4DOF.

    You're poised to have a great 4 DOF.
  8. alexcc

    alexcc New Member

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    Thank you
    I now begin to test the operation of sabertooths with 2 engines

    Merci
    Je commence actuellement à tester le fonctionnement des sabertooths avec 2 moteurs

    20160710_232929.jpg
    • Like Like x 1
  9. alexcc

    alexcc New Member

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    Hello everyone,
    I finished testing the sabertooth controllers and I think they understand their operation. Also, I finished to building a small pcb based on an Arduino Mega, which will link the computer and simulator. It will therefore remain me to make a little holder for potentiometers engines before they can test my code for Arduino.

    Bonjour à tous,
    J'ai fini de tester les controleurs sabertooth et je pense bien comprendre leur fonctionnement. J'ai également fini de construire le petit pcb basé sur un arduino mega qui fera le lien entre l'ordi et le simulateur. Il va donc me rester à fabriquer un petit support pour les potentiomêtres des moteurs avant de pouvoir tester mon code pour l'arduino.

    20160808_214526.jpg
  10. alexcc

    alexcc New Member

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    Hello everyone,
    I decided to invest in a 3D printer to set a supply problem in part. So after some adjustment here is a little editing to keep the pot and get feedback motors.

    Bonjour à tous,
    J'ai décidé d'investir dans une imprimente 3d afin de reglé un problème d'approvisionnement en pièce. Donc après quelque ajustement voici un petit montage pour tenir les pot et obtenir le feedback des moteurs.

    20160928_161133.jpg 20161005_232104.jpg 20161005_232208.jpg
    • Like Like x 3
  11. Nick Moxley

    Nick Moxley Well-Known Member

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    Those gears dont appear to have a very good tooth contact. You will surely see slop and in turn a very annoying wobble in the feedback. Imo that needs to be addressed.
  12. alexcc

    alexcc New Member

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    It is true that there is a small game in the tooth pitch but it is not as large as the voice on the pictures.

    Thank you for the comment.

    Il est vrai qu'il y a un petit jeu dans le pas des dents mais il n'est pas aussi grand qu'on le voix sur les photos.

    Merci de la remarque.
  13. Nick Moxley

    Nick Moxley Well-Known Member

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    ANY small tick of play or movement will be Very noticeable, there's a reason a lot of us run Direct feedback off the motor.

    Also your prints appear to have a lot of extra oozing/stringing going on, What printer did you get and what slicing program are you using ?
  14. alexcc

    alexcc New Member

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    I use Anet a8 which is a replica of the pursa i3. The software to control the 3d printer is Cura. I did notice that my print quality can a poor, I still work to tune the printer, but it is complex.

    I thought of using a direct feedback at first, but saw the resolution of the pot vs that of the motor I change my mind for fear of losing too much precision.

    J'utilise l'Anet a8 qui est une réplique de la pursa i3. Le logiciel pour controler l'imprimente est Cura. J'ai effectivement remarqué que ma qualité d'impression laisse un peut à désirer, je travaille encore à qualibrer l'imprimente, mais cela reste complexe.

    J'ai pensé d'utiliser un feedback directe au début, mais vu la résolution du pot versus celle du moteur j'ai changer d'idée de peur de perdre trop de précision.
  15. Nick Moxley

    Nick Moxley Well-Known Member

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    "saw the resolution of the pot" meaning what exactly ?


    So You took a low resolution pot and added some gears with play in them, all you've done is make the problem worse imo.


    Direct feedback is the Most accurate you can get. Quality Hall sensor pot is Highly suggested (15$ a pop)
  16. alexcc

    alexcc New Member

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    What I meant was that the pot works on almost 360 degrees and the engine will run until maximum 180 degrees.

    Ce que j'ai voulu dire c'est que le pot fonctionne sur presque 360 degrés mais le moteur ne fonctionnera jusqu'a maximum 180 degrés.
  17. Nick Moxley

    Nick Moxley Well-Known Member

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  18. alexcc

    alexcc New Member

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    Thank you I did not know that there are pots that only works on 180 degrees

    Merci je ne savais pas qu'il existait des pots qui fonctionne seulement sur 180 degrés
  19. alexcc

    alexcc New Member

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    Hello everyone,
    To change the wrong place, I try to communicate between Simtools and Arduino and I still galleyv :(. I think the port is configured and send for the moment that the value "<Axis 1>" I do not understand that is the number that is sent to the Arduino module. I feel that value not linear or I do not interpret it in the right base (binary, decimal, hexadecimal).

    See the printed screen of simtool of the bottom and a part of the Arduino code.

    P.S. values send to the Arduino is read thanks to an LCD display.

    Bonjour a tous,
    Afin de changer le mal de place, j'ai tenter de faire communiquer Simtools avec mon arduino et je galère encore :(. Je crois que le port est bien configuré et j'envoie pour l'instant que la valeur "<Axis 1>" mais je ne comprend pas que représente le chiffre qui est envoyé au module arduino. J'ai l'impression que valeur ne pas linéaire ou que je ne l'interprète pas sur la bonne base (binaire, décimal, hexa).

    Voir les imprimes écrants de simtool au bas ainsi qu'une partie du code arduino.

    P.S. les valeurs envoyer a l'arduino est lut grace à un afficheur lcd.

    Simtool - Axis Assigments.jpg Simtool - Axis Limiting.jpg Simtool - Interface Settings.jpg Simtool - Output.jpg


    //Variable de l'afficheur
    int lcdRSpin = 11;
    int lcdEpin = 10;
    int lcd4pin = 4;
    int lcd5pin = 5;
    int lcd6pin = 6;
    int lcd7pin = 7;

    //Inicialise l'afficheur lcd
    LiquidCrystal lcd(lcdRSpin, lcdEpin, lcd4pin, lcd5pin, lcd6pin, lcd7pin);

    void setup()
    {
    //Vitesse de communication
    Serial.begin(9600);



    lcd.begin(16, 2);
    }

    void loop()
    {

    if (Serial.available())
    {
    data[datacount] = Serial.read();
    datacount++;

    if(datacount > 2)
    {
    datacount = 0;

    lcd.setCursor(0,0);
    lcd.print(data[0]);
    lcd.setCursor(0,1);
    lcd.print(data[1]);
    }
    }
    }
  20. alexcc

    alexcc New Member

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    Hello,
    Here are the updates about my simulator.

    First of all, I had to relocate my arduino card in a new box, because I had interference.

    I also had to modify some parts, mistake of design, but the whole begins to take shape. ; -)

    P.S. the "<Axis1>" value in the Game Engine software sends only 8bits and not 16 as I thought, so it's a number from 0 to 255 or the number 127 means the middle position.


    Bonjour,
    Voici les mises à jour à propos de mon symulateur.

    Tout d'abord, j'ai du relocaliser ma carte arduino dans un nouveau boitié, car j'avais des interférences.

    J'ai du aussi modifier quelque pièces, erreur de conception, mais le tout commence à prendre forme. ; - )

    P.S. la valeur "<Axis1>" dans le logiciel Game Engine envoie seulement 8bits et non pas 16 comme je le pensais, donc il sajit d'un nombre de 0 à 255 ou le nombre 127 signifie la position médiane.

    20161127_165538.jpg 20161127_164616.jpg