Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente | ||
wiki:projets:3p024:1819:projet4 [2019/03/20 10:59] mvacheron |
wiki:projets:3p024:1819:projet4 [2020/10/05 14:39] (Version actuelle) |
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Voici le matériel nécessaire pour concevoir les 3 Thérémines : | Voici le matériel nécessaire pour concevoir les 3 Thérémines : | ||
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- | 1 x Antenne | ||
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- | Détermine un signal en fonction de la position de la main. | ||
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- | 1 x CD4093 NAND IC | ||
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- | Oscillateur créer un signal triangulaire qui a besoin d' | ||
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- | 1 x MCP602 OpAmp | ||
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- | OpAmp permet d' | ||
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- | 2x 100pF Capacitor | ||
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- | 1x 1nF Capacitor | ||
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- | 1x 4.7µF Capacitor | ||
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- | 6x 10k Resistor | ||
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- | 1x 5.1k Resistor | ||
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- | 1x6.8k Resistor | ||
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- | 2x 10k Potentiometer | ||
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- | Régule le volume et la hauteur de l' | ||
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- | 1 x Speaker | ||
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<fs xx-large> | <fs xx-large> | ||
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1x Speaker | 1x Speaker | ||
- | Photoresistor Theremin | + | <fs xx-large> |
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- | Matériel | + | |
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- | Fonctionnalité | + | |
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+ | <fs xx-large> | ||
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+ | 1 x Antenne | ||
+ | |||
+ | Détermine un signal en fonction de la position de la main. | ||
+ | |||
+ | 1 x CD4093 NAND IC | ||
+ | |||
+ | Oscillateur créer un signal triangulaire qui a besoin d' | ||
+ | |||
+ | 1 x MCP602 OpAmp | ||
+ | |||
+ | OpAmp permet d' | ||
+ | |||
+ | 2x 100pF Capacitor | ||
+ | |||
+ | |||
+ | 1x 1nF Capacitor | ||
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+ | 1x 4.7µF Capacitor | ||
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+ | 6x 10k Resistor | ||
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+ | 1x 5.1k Resistor | ||
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+ | 1x6.8k Resistor | ||
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+ | 2x 10k Potentiometer | ||
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+ | Régule le volume et la hauteur de l' | ||
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+ | 1 x Speaker | ||
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===== Journal de bord: ===== | ===== Journal de bord: ===== | ||
- | * ** 23/ | + | |
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* Première réunion du groupe: choix du sujet et de l' | * Première réunion du groupe: choix du sujet et de l' | ||
* Recherche bibliographique et internet sur le théremine. | * Recherche bibliographique et internet sur le théremine. | ||
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Avancement du projet : | Avancement du projet : | ||
- | ** Semaine 3/02 ** : Début des manipulations pour la création du Thérémine Arduino, mais par manque de matériel la conception est reporté à la semaine prochaine. Besoin d’un speaker pour recevoir le son de l’arduino, | + | |
- | ** Semaine 11/02 ** : Liste de matériel envoyé au technicien. Nous continuons les manipulations. | + | |
[[https:// | [[https:// | ||
- | ** Semaine 18/02 **: Nous avons récupérer le matériel pour la conception du Thérémine Analogique. Nous allons d' | + | |
- | [[https:// | + | [[https:// |
+ | Voici une photo du montage du Thérémine Arduino (version Sonar) : | ||
+ | {{: | ||
- | ** Semaine 25/02 ** : Nous continuons les manipulations afin de concevoir le thérémine analogique. Cependant suite à des disfonctionnement on à changer le matériel (capacité, résistance, | + | |
[[https:// | [[https:// | ||
- | ** Semaine 03/03 ** : Nous avançons dans nos recherches de la théorie physique derrière le fonctionnement du Thérémine. Nous allons de plus perfectionner le montage du thérémine analog. | + | |
+ | Voici une photo du premier montage du Thérémine analog : | ||
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- | ** Semaine 11/03 ** : Nous continuons les manipulations pour le thérémine totalement analogique, nous bloquons sur le montage éléctronique de ce dernier. Pendant qu'une partie du groupe se charge de résoudre les problèmes de montage l' | + | |
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Nous avons l' | Nous avons l' | ||
- | ** Weekend 16-17/03 **: Suite à une consultation avec un Electronicien, | + | |
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+ | ** Semaine 02/04 **: Amélioration de la sensibilité de notre Thérémine analogique | ||
+ | ** Semaine 08/04 **: Nous avançons respectivement sur chaque partie du compte rendu. Maxence commence la rédaction sur le Thérémine digital (Arduino), Daria sur le Thérémine analogique, Yenni sur l' | ||
+ | ** Semaine 15/04 ** Nous continuons chacun à écrire le compte rendu, en échangeant régulièrement notre avancé et le contenu ajouté au compte rendu. | ||
===== Diagramme de Gantt: ===== | ===== Diagramme de Gantt: ===== | ||
{{: | {{: | ||
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What resulted will be described here in detail, because it is our belief tht the solution to our problems were physically interesting in and of themselves to be presented. | What resulted will be described here in detail, because it is our belief tht the solution to our problems were physically interesting in and of themselves to be presented. | ||
- | **<fs medium> | + | |
We must have spent a total of 4 hours assembling and reassembling the following electronics circuit: | We must have spent a total of 4 hours assembling and reassembling the following electronics circuit: | ||
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Scratching our heads and cutting our losses after a few failed attempts, we consulted the electronic technician. | Scratching our heads and cutting our losses after a few failed attempts, we consulted the electronic technician. | ||
- | ** Technician' | + | |
Here I would simply like to include the two emails I received from the technician, including some schematics. | Here I would simply like to include the two emails I received from the technician, including some schematics. | ||
He was astonished to discover that we did not test our circuit beforehand with a simulator, as it was more intricate than the two that came before. | He was astonished to discover that we did not test our circuit beforehand with a simulator, as it was more intricate than the two that came before. | ||
During our time together, I received a crash course in LT Spice from him, a free simulator software to test circuits before attempting to mount them. | During our time together, I received a crash course in LT Spice from him, a free simulator software to test circuits before attempting to mount them. | ||
- | **//Email No.1// | + | |
Ben oui parce que avec des pf cela fait une fréquence extrêmement rapide donc inaudible. Comment as tu la fréquence d’oscillation ? | Ben oui parce que avec des pf cela fait une fréquence extrêmement rapide donc inaudible. Comment as tu la fréquence d’oscillation ? | ||
Avec 100nf et 1000 ohms on a presque 5 khz, a comparer avec le la 440 hz, c’est Maria Callas qui chante ? | Avec 100nf et 1000 ohms on a presque 5 khz, a comparer avec le la 440 hz, c’est Maria Callas qui chante ? | ||
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What had to be done now, was to find the right balance between capacitance and resistor, that would put us within an audible range (respecting the shmidt-trigger) | What had to be done now, was to find the right balance between capacitance and resistor, that would put us within an audible range (respecting the shmidt-trigger) | ||
- | **// | + | |
Before, we hadn't really consulted any data sheets of our components. | Before, we hadn't really consulted any data sheets of our components. | ||
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- | **// | + | |
The final schematic that our simulation assured us would work: | The final schematic that our simulation assured us would work: | ||
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{{: | {{: | ||
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+ | Having generated a sound, we wondered how we could improve the frequency shifts of our rudimentary instrument. | ||
+ | One idea was to increase the surface area of the capacitance, | ||
+ | The object we devised for such a procedure involved an aluminum sheet spread out thin over an area. Two of these seperated by a layer of film creates " | ||
+ | {{: | ||
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+ | The result was that the frequency had dropped by 500 Hz to about 1200 Hz, as seen in the picture below. | ||
+ | {{: | ||
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+ | When Yenni squeezed the antenna, the frequency shot up to about 7000 Hz. | ||
+ | {{: | ||
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+ | When I placed my hand onto the sheet of aluminum, the frequency shot up to 12 000 Hz. | ||
+ | {{: | ||
+ | {{: | ||
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+ | By adding our bodies capacities, we've nearly doubled the frequency! | ||
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+ | So what about all the frequencies in between? As demosntrated in this video below, by varying hte proximity of our hand to the aluminum sheet (without touching it this time!), we managed to acheive different frequencies. | ||
+ | {{ : | ||
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+ | We're approaching the actual theorem! | ||
===== Bibliographie: | ===== Bibliographie: | ||
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Arduino Thérémine : https:// | Arduino Thérémine : https:// | ||
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