Différences entre les pages « Mini station météo (qualité de l'air) » et « Guitare électrique Arduino »

 
 
Ligne 1 : Ligne 1 :
 
{{Tuto Details
 
{{Tuto Details
 
|Licences=Attribution (CC-BY)
 
|Licences=Attribution (CC-BY)
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|Description=Création d'une station météo capable d'analyser la qualité de l'air.
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|Description=Guitarduino
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|Disciplines scientifiques=Arduino, Acoustics, Computing, Electricity
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Prototype réalisé dans le cadre du Hackathon Kit4kids 2019 par Denis Bernabeu, Lucas Dupor et Sylvain Charron
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|Difficulty=Expert
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|Disciplines scientifiques=Arduino, Computing, Electricity, Physics
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|Duration=3
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|Difficulty=Technical
 
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|Duration=4
 
 
|Duration-type=hour(s)
 
|Duration-type=hour(s)
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|Tags=capteurs, météo, météorologie, température, Air, humidité
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|Tags=Guitare, Arduino, Son
 
}}
 
}}
 
{{Introduction
 
{{Introduction
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|Introduction=Le but de ce tutoriel est d'assembler une station météo équipée pour afficher la température, l'humidité et la concentration en gaz nocifs.
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|Introduction=Créer une guitare électrique et autonome, à moindre coût, que les participants peuvent rapporter chez eux à la fin de l'activité.
  
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Cette station se veut simple d'utilisation et réalisable à bas coût.
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Inspirée de l'instrument de musique appelé thérémine.
 
}}
 
}}
 
{{Materials
 
{{Materials
 
|ItemList={{ItemList
 
|ItemList={{ItemList
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|Item=Breadboard
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|Item=Carton
 
}}{{ItemList
 
}}{{ItemList
 
|Item=Carte arduino micro-controleur
 
|Item=Carte arduino micro-controleur
 
}}{{ItemList
 
}}{{ItemList
 
|Item=Logiciel Arduino
 
|Item=Logiciel Arduino
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}}{{ItemList
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|Item=Résistance
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}}{{ItemList
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|Item=Interrupteur à bascule
 
}}{{ItemList
 
}}{{ItemList
 
|Item=Fil électrique
 
|Item=Fil électrique
 
}}{{ItemList
 
}}{{ItemList
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|Item=Câble USB - micro-USB
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|Item=Potentiomètre
 
}}{{ItemList
 
}}{{ItemList
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|Item=Batterie 18650
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|Item=Chargeur-transformateur porte-batterie 18650
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}}{{ItemList
 
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|Item=Capteur de température
 
 
}}{{ItemList}}
 
}}{{ItemList}}
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|Tuto_Attachments={{Tuto Attachments}}
 
 
}}
 
}}
 
{{Tuto Step
 
{{Tuto Step
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|Step_Title=Placer la carte sur la Breadboard
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|Step_Title=Découper la forme de la guitare
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|Step_Content=Après avoir soudé la carte à une embase à broches, la placer sur la Breadboard.
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|Step_Content=Dans du carton (ou autre matériel), dessiner la forme de l'instrument de musique. La découper.
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|Step_Picture_00=Mini_station_m_t_o__qualit__de_l_air__broche.jpg
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|Step_Picture_01=Mini_station_m_t_o_qualit_de_l_air_IMG_20191205_144405.jpg
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<br />
 
}}
 
}}
 
{{Tuto Step
 
{{Tuto Step
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|Step_Title=Connecter les capteurs à la carte
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|Step_Title=Préparer les fils
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|Step_Content=Une fois la carte placée sur la Breadboard, les 2 capteurs se connectent de la façon suivante (voir schéma).
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|Step_Content=Les différents éléments vont être branchés à la carte Arduino via des embouts femelles de câbles dupont.  
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<br />
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On peut préparer les câbles dès maintenant : sur des fils dupont, dénuder une des extrémités, en gardant une extrémité femelle.
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|Step_Picture_00=Captobox_IMG_20191204_152104_01.jpg
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|Step_Picture_00=Guitare__lectrique_Arduino_IMG_20191205_115649684.jpg
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|Step_Picture_01=Captobox_IMG_20191204_152320_01_01.jpg
 
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}}
 
}}
 
{{Tuto Step
 
{{Tuto Step
−
|Step_Title=Téléverser le code de la station météo
+
|Step_Title=Préparer le bloc d'alimentation
−
|Step_Content=Connecter la carte à l'ordinateur en utilisant un câble USB / micro USB.
+
|Step_Content=Avant de commencer, assurez-vous que la batterie est chargée ! 
  
 +
''Remarque : Nous avons choisi de construire notre prototype avec un bloc batterie 18650, mais l'instrument fonctionne en 5V. Vous pouvez donc remplacer le bloc batterie par :''
  
−
Une fois cela fait, ouvrir le logiciel Arduino et télécharger la bibliothèque correspondant au capteur DHT 22 et compatible avec la carte Heltech : DHTesp.
+
*''un chargeur de téléphone''
 +
*''une batterie "power bank" pour téléphone''
 +
*''des piles en série (3 piles 1,5 V font parfaitement l'affaire)''
 +
*''...''<br />
  
 +
<br />
 +
|Step_Picture_00=Guitare__lectrique_Arduino_IMG_20191205_143727255_1_.jpg
 +
|Step_Picture_00_annotation={"version":"2.4.6","objects":[{"type":"image","version":"2.4.6","originX":"left","originY":"top","left":-277,"top":-128,"width":3968,"height":2976,"fill":"rgb(0,0,0)","stroke":null,"strokeWidth":0,"strokeDashArray":null,"strokeLineCap":"butt","strokeDashOffset":0,"strokeLineJoin":"miter","strokeMiterLimit":4,"scaleX":0.23,"scaleY":0.23,"angle":0,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","paintFirst":"fill","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"crossOrigin":"","cropX":0,"cropY":0,"src":"https://www.wikidebrouillard.org/images/e/e3/Guitare_lectrique_Arduino_IMG_20191205_143727255_1_.jpg","filters":[]}],"height":450.2384737678855,"width":600}
 +
}}
 +
{{Tuto Step
 +
|Step_Title=Préparer le manche de la guitare
 +
|Step_Content=Dans le manche de la guitare, tracer deux lignes espacées de 1 cm, dans le sens de la longueur.
  
−
Une fois cela fait, utiliser le code ci-dessus qui permet de récupérer les données envoyées par les capteurs et de les afficher sur l'écran de la carte :
 
  
−
/* Frankencode fait lors de la session KIT4Kids 2019 à Nantes (3,4 et 5 décembre) par Lucas Dupor, Sylvain Charron et Bernabeu Denis*/
+
Sur la 1ère ligne, faire une série de 2 trous espacés de 5 mm, tous les 2 cm  (voir photo). Au total, cela doit faire 12 trous.
  
−
#include <Arduino.h>
+
Insérer des morceaux de fil conducteur dans les trous. Souder les résistances entre chaque fil.  
  
−
#include <U8g2lib.h>
 
  
−
#include <DHTesp.h>;
+
Recouvrir la 2ème ligne de scotch cuivre sur toute la longueur.
 +
|Step_Picture_00=Guitare__lectrique_Arduino_IMG_20191205_133548790.jpg
 +
|Step_Picture_01=Guitare__lectrique_Arduino_IMG_20191205_133724381.jpg
 +
|Step_Picture_02=Guitare__lectrique_Arduino_IMG_20191205_133733793.jpg
 +
|Step_Picture_03=Guitare__lectrique_Arduino_IMG_20191205_112115205.jpg
 +
|Step_Picture_04=Guitare__lectrique_Arduino_IMG_20191205_112242530.jpg
 +
|Step_Picture_05=Guitare__lectrique_Arduino_IMG_20191205_111720033.jpg
 +
}}
 +
{{Tuto Step
 +
|Step_Title=Préparation du bottleneck
 +
|Step_Content=Enrouler un petit morceau de carton en forme de bague. Le recouvrir de scotch cuivre. Cet ustensile servira à faire contact entre les 2 lignes de fil conducteur le long du manche de la guitare.
 +
|Step_Picture_00=Guitare__lectrique_Arduino_IMG_20191205_143428241_1_.jpg
 +
|Step_Picture_00_annotation={"version":"2.4.6","objects":[{"type":"image","version":"2.4.6","originX":"left","originY":"top","left":-121,"top":-175,"width":2976,"height":3968,"fill":"rgb(0,0,0)","stroke":null,"strokeWidth":0,"strokeDashArray":null,"strokeLineCap":"butt","strokeDashOffset":0,"strokeLineJoin":"miter","strokeMiterLimit":4,"scaleX":0.3,"scaleY":0.3,"angle":0,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","paintFirst":"fill","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"crossOrigin":"","cropX":0,"cropY":0,"src":"https://www.wikidebrouillard.org/images/8/81/Guitare_lectrique_Arduino_IMG_20191205_143428241_1_.jpg","filters":[]}],"height":600,"width":600}
 +
}}
 +
{{Tuto Step
 +
|Step_Title=Préparer la sortie son
 +
|Step_Content=Le son sortira par le haut-parleur, mais il faut pouvoir moduler le volume grâce à un potentiomètre. Il faut donc les brancher en série, comme sur la photo.  
  
−
#ifdef U8X8_HAVE_HW_SPI
 
  
−
#include <SPI.h>
+
Le haut -parleur est préparé en soudant, à chaque sortie, un fil dupont dont l'extrémité femelle est libre. Sur une de ces extrémités, brancher une des fiches extérieures du potentiomètre. Sur la fiche du milieu, brancher un fil dupont femelle-femelle.
 +
|Step_Picture_00=Guitare__lectrique_Arduino_IMG_20191205_121437523.jpg
 +
}}
 +
{{Tuto Step
 +
|Step_Title=Brancher les différents éléments à la carte Arduino
 +
|Step_Content=Brancher les différents éléments comme sur le schéma.  
  
−
#endif
 
  
−
#ifdef U8X8_HAVE_HW_I2C
+
Bloc d'alimentation :
  
−
#include <Wire.h>
+
*pôle - (GND) à une fiche - (GND) de la carte Arduino
 +
*pôle + du bloc d'alimentation relié à une fiche 5V de la carte Arduino
  
−
#endif
+
Ensemble haut-parleur + potentiomètre :
  
−
DHTesp dht;
+
*extrémité libre du haut-parleur relié à une fiche GND de la carte Arduino
 +
*fiche du milieu du potentiomètre : fiche D9 de la carte Arduino
  
−
U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ 16, /* clock=*/ 5, /* data=*/ 4);
+
Série de résistance :
  
−
int analog_pin=A0;
+
*extrémité 1 relié à la masse (GND de la batterie ou de la carte Arduino)
 +
*extrémité 2 relié au pôle + (de la batterie ou de la carte Arduino
  
−
void setup(void) {
+
Résistance supplémentaire (pour éviter que le son grésille)
  
−
Serial.begin(9600);
+
*pôle - relié à la masse (GND de la batterie ou de la carte Arduino)
 +
*pôle + relié au fil de cuivre du manche de la guitare et à la fiche A0 de la carte Arduino
  
−
  u8g2.begin(); // Initialise l'écran
+
Potentiomètre
  
−
  dht.setup(12, DHTesp::DHT22); // Connection DHT senseur à la GPIO 12 (sortie 12)
+
*fiche du milieu reliée à la fiche A1 de la carte Arduino
−
 
+
*fiches des extrémités reliés à la masse et à un pôle + (de la batterie ou fiche 5V de la carte Arduino)
  
−
}
+
Ajouter un interrupteur dans le circuit.
−
 
+
|Step_Picture_00=Guitare__lectrique_Arduino_Guitarduino_sch_ma.jpg
−
void loop(void) {
+
}}
−
 
+
{{Tuto Step
−
 
+
|Step_Title=Programmer la carte Arduino
−
int tempy; // variable lié aux gaz
+
|Step_Content=Dans le logiciel Arduino, copier-coller le code suivant : Vérifier que tout est bien branché et tester le montage en allumant le bloc d'alimentation.
−
 
 
−
tempy=analogRead(analog_pin);
 
−
 
 
−
Serial.print("Température : "); //faire apparaitre dans le moniteur série les valeurs de température et d'humidité
 
−
 
 
−
Serial.println(dht.getTemperature());
 
−
 
 
−
Serial.print("Humidité : ");
 
−
 
 
−
Serial.println(dht.getHumidity());
 
−
 
 
−
u8g2.clearBuffer();  // Nettoyage de la mémoire interne
 
−
 
 
−
u8g2.setFont(u8g2_font_ncenB08_tr); // Choix d'une police d'écriture
 
−
 
 
−
u8g2.setCursor(10, 15);
 
−
 
 
−
u8g2.print("Temperature : ");
 
−
 
 
−
u8g2.println(dht.getTemperature()); // Affichage de la valeur de température
 
−
 
 
−
u8g2.setCursor(10, 25);
 
−
 
 
−
u8g2.print("Humidity:");  // remarque : c'est en anglais car le caractère "é" ne veut pas s'afficher
 
−
 
 
−
u8g2.println(dht.getHumidity()); // Affichage de la valeur d'humidité
 
−
 
 
−
u8g2.println("%");
 
−
 
 
−
u8g2.sendBuffer();  // Transfert de la mémoire interne à l'écran
 
−
 
 
−
delay(4000); 
 
−
 
 
−
if(tempy>512)  // début d'une boucle "si" pour savoir si le capteur détecte trop de gaz dangereux
 
−
 
 
−
{
 
−
 
 
−
u8g2.clearBuffer();          // Nettoyage de la mémoire interne
 
−
 
 
−
  u8g2.setFont(u8g2_font_ncenB08_tr); // Choix d'une police d'écriture
 
−
 
 
−
  u8g2.drawStr(0,10,"Alerte Danger!");  // Ecriture dans la mémoire interne
 
−
 
 
−
  u8g2.setCursor(0, 25);
 
−
 
 
−
  u8g2.print(tempy);          // affichage de la valeur de gaz
 
−
 
 
−
  u8g2.sendBuffer();          // Transfert de la mémoire interne à l'écran
 
−
 
 
−
  delay(3000); 
 
−
 
 
−
delay(1000);
 
−
 
 
−
}
 
−
 
 
−
else
 
−
 
 
−
{
 
−
 
 
−
u8g2.clearBuffer();       
 
−
 
 
−
  u8g2.setFont(u8g2_font_ncenB08_tr);
 
−
 
 
−
  u8g2.drawStr(0,10,"Sans danger!");
 
−
 
 
−
  u8g2.setCursor(0, 25);
 
−
 
 
−
  u8g2.print(tempy);
 
−
 
 
−
  u8g2.sendBuffer();         
 
−
 
 
−
  delay(3000); 
 
−
 
 
−
}
 
−
   
 
−
 
 
−
}
 
−
 
 
−
 
 
−
Pour une utilisation plus complète de la carte Heltech, se reporter au schéma suivant qui explique plus en détails le rôle des différents PINS :
 
−
 
 
−
https://user-images.githubusercontent.com/3751318/37211768-50f5be2c-23ad-11e8-9385-416477cd0312.png
 
−
|Step_Picture_00=Mini_station_m_t_o__qualit__de_l_air__IMG_20191205_144009.jpg
 
−
|Step_Picture_01=Mini_station_m_t_o__qualit__de_l_air__37211768-50f5be2c-23ad-11e8-9385-416477cd0312.png
 
−
|Step_Picture_01_annotation={"version":"2.4.6","objects":[{"type":"image","version":"2.4.6","originX":"left","originY":"top","left":0,"top":0,"width":1000,"height":549,"fill":"rgb(0,0,0)","stroke":null,"strokeWidth":0,"strokeDashArray":null,"strokeLineCap":"butt","strokeDashOffset":0,"strokeLineJoin":"miter","strokeMiterLimit":4,"scaleX":0.6,"scaleY":0.6,"angle":0,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","paintFirst":"fill","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"crossOrigin":"","cropX":0,"cropY":0,"src":"https://www.wikidebrouillard.org/images/e/e4/Mini_station_m_t_o_qualit_de_l_air_37211768-50f5be2c-23ad-11e8-9385-416477cd0312.png","filters":[]},{"type":"textbox","version":"2.4.6","originX":"center","originY":"center","left":131.34,"top":292.01,"width":285.75,"height":48.82,"fill":"#FF0000","stroke":"#FF0000","strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeDashOffset":0,"strokeLineJoin":"miter","strokeMiterLimit":4,"scaleX":0.89,"scaleY":0.89,"angle":0,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","paintFirst":"fill","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"text":"Schéma des branchements de la carte Heltech","fontSize":20,"fontWeight":"normal","fontFamily":"sans-serif","fontStyle":"normal","lineHeight":1.16,"underline":false,"overline":false,"linethrough":false,"textAlign":"left","textBackgroundColor":"","charSpacing":0,"minWidth":20,"styles":{} }],"height":329,"width":600}
 
 
}}
 
}}
 
{{Tuto Step
 
{{Tuto Step
−
|Step_Title=Préparer l'alimentation de la station météo
+
|Step_Title=Mettre en place dans la boîte
−
|Step_Content=La station fonctionne au moyen d'une batterie 18650 que l'on installe sur un support.
+
|Step_Content=Mettre en place tous les éléments sur la forme en carton, coller les éléments mis en place et refermer la guitare !
  
−
 
+
<br />
−
Connecter la sortie 5 Volts de ce support à la borne 5V de la carte Heltech sur la Breadboard.
+
|Step_Picture_00=Guitare_lectrique_Arduino_IMG_20191205_153744596.jpg
−
 
+
|Step_Picture_01=Guitare_lectrique_Arduino_IMG_20191205_153749681.jpg
−
 
 
−
Remarque : on peut également utiliser d'autres batteries
 
−
|Step_Picture_00=Mini_station_m_t_o__qualit__de_l_air__IMG_20191205_093858.jpg
 
−
|Step_Picture_01=Mini_station_m_t_o__qualit__de_l_air__IMG_20191205_151722.jpg
 
−
|Step_Picture_02=Mini_station_m_t_o__qualit__de_l_air__IMG_20191205_152000.jpg
 
−
|Step_Picture_02_annotation={"version":"2.4.6","objects":[{"type":"image","version":"2.4.6","originX":"left","originY":"top","left":0,"top":0,"width":4608,"height":3456,"fill":"rgb(0,0,0)","stroke":null,"strokeWidth":0,"strokeDashArray":null,"strokeLineCap":"butt","strokeDashOffset":0,"strokeLineJoin":"miter","strokeMiterLimit":4,"scaleX":0.13,"scaleY":0.13,"angle":0,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","paintFirst":"fill","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"crossOrigin":"","cropX":0,"cropY":0,"src":"https://www.wikidebrouillard.org/images/3/36/Mini_station_m_t_o_qualit_de_l_air_IMG_20191205_152000.jpg","filters":[]},{"type":"textbox","version":"2.4.6","originX":"center","originY":"center","left":220.31,"top":120,"width":310.37,"height":22.6,"fill":"#000000","stroke":"#000000","strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeDashOffset":0,"strokeLineJoin":"miter","strokeMiterLimit":4,"scaleX":1,"scaleY":1,"angle":0,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","paintFirst":"fill","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"text":"Alternative : batterie LIPO","fontSize":20,"fontWeight":"normal","fontFamily":"sans-serif","fontStyle":"normal","lineHeight":1.16,"underline":false,"overline":false,"linethrough":false,"textAlign":"left","textBackgroundColor":"","charSpacing":0,"minWidth":20,"styles":{} }],"height":450,"width":600}
 
 
}}
 
}}
 
{{Tuto Step
 
{{Tuto Step
−
|Step_Title=Construire le boîtier de la station météo
+
|Step_Title=S'amuser et améliorer
−
|Step_Content=Le plus simple est d'opter pour une boîte en carton parallélépipédique.
+
|Step_Content=Vous pouvez désormais customiser votre instrument, lui ajouter des composants, etc...
−
 
 
−
 
 
−
Avec le matériel décrit sur cette page, les dimensions étaient celles décrites sur la photo du patron.
 
 
}}
 
}}
 
{{Notes
 
{{Notes
−
|Observations=La station permet d'afficher
+
|Observations=Lorsqu'on déplace le bottleneck le long du manche de la guitare, on obtient des sons différents.
 
}}
 
}}
 
{{Tuto Status
 
{{Tuto Status
 
|Complete=Draft
 
|Complete=Draft
 
}}
 
}}

Version du 5 décembre 2019 à 16:45

Guitarduino

Auteur avatarGwen72 | Dernière modification 26/06/2020 par Ben

Pas encore d'image

Difficulté
Expert
Durée
3 heure(s)
Disciplines scientifiques
Arduino, Acoustique, Informatique, Electricité
Guitarduino
Difficulté
Expert
Durée
3 heure(s)
Disciplines scientifiques
Arduino, Acoustique, Informatique, Electricité
<languages />
Licence : Attribution (CC-BY)

Introduction

Créer une guitare électrique et autonome, à moindre coût, que les participants peuvent rapporter chez eux à la fin de l'activité.

Inspirée de l'instrument de musique appelé thérémine.
Carton
Item-Carton plaque-carton-alveolaire PDT02369.jpg
Le terme carton désigne certains types de papiers généralement caractérisés par une rigidité, une épaisseur et/ou un grammage relativement élevés ; cependant, la distinction peut être faite en fonction des caractéristiques et de l’emploi. Par exemple, certains matériaux cannelés légers sont considérés comme des cartons alors que les feuilles de papier buvard ou certains supports artistiques à fort grammage sont considérés comme des papiers.
Carte arduino micro-controleur
Item-Carte arduino micro-controleur 250px-ArduinoUno R3 Front 450px.jpg
Pour accéder aux fiches qui présentent des montage aller dans la catégorie:arduino.

Un super outil pour la bidouille électro-technique !

Arduino est un circuit imprimé qualifié de libre et open-source (les plans sont consultables et tout le monde peut fabriquer une copie exacte de l'Arduino, contrairement à la plupart des objets manufacturés de notre environnement comme les machines à laver, les téléphones, les ordinateurs). Seuls le nom et le logo sont réservés.

Sur Arduino se trouve un microcontrôleur (calculateur) qui peut être programmé pour analyser et produire des signaux électriques.

En gros, on y branche des capteurs, le programme de l'Arduino traite les informations données par le capteur et déclenche des actions (comme allumer ou éteindre, augmenter, diminuer...).

Il peut être utilisé pour effectuer des tâches très diverses comme la charge de batteries, la domotique (le contrôle des appareils domestiques (éclairage, chauffage...), le pilotage d'un robot, etc.

Arduino peut être utilisé pour construire des objets interactifs indépendants (prototypage rapide), ou bien peut être connecté à un ordinateur pour communiquer avec ses logiciels. Plusieurs versions

Il existe plusieurs versions de l'Arduino officiel, plus des versions réalisées par d'autres constructeurs.

Sur wikidébrouillard, nous utiliserons en général l'Arduino Uno.
Logiciel Arduino
Item-Logiciel Arduino logicielArduino.png
C'est le logiciel libre développé pour accompagner et programmer la carte Arduino
Résistance
Item-résistance 10kresistance.jpg
Une résistance est un composant électronique ou électrique dont la principale caractéristique est d'opposer une plus ou moins grande résistance (mesurée en ohms) à la circulation du courant électrique.
Interrupteur à bascule
Item-interrupteur à bascule interrupteur.jpg
Pour ouvrir ou fermer un circuit électrique.
Fil électrique
Item-Fil électrique 179px-Stranded lamp wire.jpg
Un fil électrique : est le composant électro technique servant au transport de l'électricité, afin de transmettre de l'énergie et de l'information. Il est constitué d'un matériau conducteur, mono-brin ou multi-brin, souvent entouré d'une enveloppe isolante (plastique, Téflon...). L'intérieur du fil électrique est appelée « âme » du fil.
Potentiomètre
Item-Potentiomètre Potentiome tre.jpg
Un potentiomètre est un type de résistance variable à trois bornes, dont une est reliée à un curseur se déplaçant sur une piste résistante terminée par les deux autres bornes.
Chargeur-transformateur porte-batterie 18650
Item-chargeur-transformateur porte-batterie 18650 ESP32-ESP32S-Pour-Wemos-Pour-Raspberry-Pi-18650-Batterie-Charge-bouclier-plaque-V3-micro-USB-Port.jpg 640x640.jpg
Ce composant multifonction est très pratique !

Étape 1 - Découper la forme de la guitare

Dans du carton (ou autre matériel), dessiner la forme de l'instrument de musique. La découper.


Étape 2 - Préparer les fils

Les différents éléments vont être branchés à la carte Arduino via des embouts femelles de câbles dupont.

On peut préparer les câbles dès maintenant : sur des fils dupont, dénuder une des extrémités, en gardant une extrémité femelle.

Guitare lectrique Arduino IMG 20191205 115649684.jpg




Étape 3 - Préparer le bloc d'alimentation

Avant de commencer, assurez-vous que la batterie est chargée !

Remarque : Nous avons choisi de construire notre prototype avec un bloc batterie 18650, mais l'instrument fonctionne en 5V. Vous pouvez donc remplacer le bloc batterie par :

  • un chargeur de téléphone
  • une batterie "power bank" pour téléphone
  • des piles en série (3 piles 1,5 V font parfaitement l'affaire)
  • ...





Étape 4 - Préparer le manche de la guitare

Dans le manche de la guitare, tracer deux lignes espacées de 1 cm, dans le sens de la longueur.


Sur la 1ère ligne, faire une série de 2 trous espacés de 5 mm, tous les 2 cm (voir photo). Au total, cela doit faire 12 trous.

Insérer des morceaux de fil conducteur dans les trous. Souder les résistances entre chaque fil.


Recouvrir la 2ème ligne de scotch cuivre sur toute la longueur.

Guitare lectrique Arduino IMG 20191205 133548790.jpg
Guitare lectrique Arduino IMG 20191205 133724381.jpg
Guitare lectrique Arduino IMG 20191205 133733793.jpg
Guitare lectrique Arduino IMG 20191205 112115205.jpg
Guitare lectrique Arduino IMG 20191205 112242530.jpg
Guitare lectrique Arduino IMG 20191205 111720033.jpg

Étape 5 - Préparation du bottleneck

Enrouler un petit morceau de carton en forme de bague. Le recouvrir de scotch cuivre. Cet ustensile servira à faire contact entre les 2 lignes de fil conducteur le long du manche de la guitare.




Étape 6 - Préparer la sortie son

Le son sortira par le haut-parleur, mais il faut pouvoir moduler le volume grâce à un potentiomètre. Il faut donc les brancher en série, comme sur la photo.


Le haut -parleur est préparé en soudant, à chaque sortie, un fil dupont dont l'extrémité femelle est libre. Sur une de ces extrémités, brancher une des fiches extérieures du potentiomètre. Sur la fiche du milieu, brancher un fil dupont femelle-femelle.

Guitare lectrique Arduino IMG 20191205 121437523.jpg




Étape 7 - Brancher les différents éléments à la carte Arduino

Brancher les différents éléments comme sur le schéma.


Bloc d'alimentation :

  • pôle - (GND) à une fiche - (GND) de la carte Arduino
  • pôle + du bloc d'alimentation relié à une fiche 5V de la carte Arduino

Ensemble haut-parleur + potentiomètre :

  • extrémité libre du haut-parleur relié à une fiche GND de la carte Arduino
  • fiche du milieu du potentiomètre : fiche D9 de la carte Arduino

Série de résistance :

  • extrémité 1 relié à la masse (GND de la batterie ou de la carte Arduino)
  • extrémité 2 relié au pôle + (de la batterie ou de la carte Arduino

Résistance supplémentaire (pour éviter que le son grésille)

  • pôle - relié à la masse (GND de la batterie ou de la carte Arduino)
  • pôle + relié au fil de cuivre du manche de la guitare et à la fiche A0 de la carte Arduino

Potentiomètre

  • fiche du milieu reliée à la fiche A1 de la carte Arduino
  • fiches des extrémités reliés à la masse et à un pôle + (de la batterie ou fiche 5V de la carte Arduino)

Ajouter un interrupteur dans le circuit.

Guitare lectrique Arduino Guitarduino sch ma.jpg




Étape 8 - Programmer la carte Arduino

Dans le logiciel Arduino, copier-coller le code suivant : Vérifier que tout est bien branché et tester le montage en allumant le bloc d'alimentation.

Étape 9 - Mettre en place dans la boîte

Mettre en place tous les éléments sur la forme en carton, coller les éléments mis en place et refermer la guitare !


Guitare lectrique Arduino IMG 20191205 153744596.jpg
Guitare lectrique Arduino IMG 20191205 153749681.jpg



Étape 10 - S'amuser et améliorer

Vous pouvez désormais customiser votre instrument, lui ajouter des composants, etc...

Comment ça marche ?

Observations : que voit-on ?

Lorsqu'on déplace le bottleneck le long du manche de la guitare, on obtient des sons différents.


Dernière modification 26/06/2020 par user:Ben.

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