{"id":9536,"date":"2025-12-19T20:02:47","date_gmt":"2025-12-19T19:02:47","guid":{"rendered":"https:\/\/blogs.etsii.urjc.es\/dseytr\/?p=9536"},"modified":"2025-12-19T20:02:48","modified_gmt":"2025-12-19T19:02:48","slug":"detector-de-metales-grupo-14","status":"publish","type":"post","link":"https:\/\/blogs.etsii.urjc.es\/dseytr\/detector-de-metales-grupo-14\/","title":{"rendered":"DETECTOR DE METALES &#8211; Grupo 14"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Introducci\u00f3n<\/h2>\n\n\n\n<p class=\"has-medium-font-size\">El proyecto del grupo 14 consiste en un detector de metales casero realizado con la placa Arduino. El funcionamiento se basa en la ley de inducci\u00f3n de Faraday, un cambio en el campo magn\u00e9tico creado por una corriente el\u00e9ctrica induce una fuerza electromotriz, bas\u00e1ndose en esta ley, la bobina del detector de metales detectar\u00e1 un cambio en la inductancia que registrar\u00e1 el Arduino.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Presupuesto<\/h2>\n\n\n\n<p class=\"has-medium-font-size\">Para construir este detector de metales se necesitan pocos componentes electr\u00f3nicos. A continuaci\u00f3n se muestra una tabla orientativa del precio y materiales que se han de usar, el precio puede variar seg\u00fan tienda, calidad, pa\u00eds&#8230;<\/p>\n\n\n\n<figure class=\"wp-block-table alignwide\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">Pieza<\/td><td class=\"has-text-align-center\" data-align=\"center\">Cantidad<\/td><td class=\"has-text-align-center\" data-align=\"center\">Precio (en euros)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Placa Elegoo Uno R3<\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">15<strong>\u20ac<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Tupperware<\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">2<strong>\u20ac<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Brida<\/td><td class=\"has-text-align-center\" data-align=\"center\">3<\/td><td class=\"has-text-align-center\" data-align=\"center\">0,45<strong>\u20ac<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Cable de cobre<\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">3,99<strong>\u20ac<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Transistor 2N2222<\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">0,08<strong>\u20ac<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Led<\/td><td class=\"has-text-align-center\" data-align=\"center\">3<\/td><td class=\"has-text-align-center\" data-align=\"center\">0,18<strong>\u20ac<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Bater\u00eda portatil<\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">19,99<strong>\u20ac<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Zumbador (Buzzer)<\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">0,50<strong>\u20ac<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Capacitor cer\u00e1mico 104<\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">0,10<strong>\u20ac<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Resistencia<\/td><td class=\"has-text-align-center\" data-align=\"center\">6<\/td><td class=\"has-text-align-center\" data-align=\"center\">0,60<strong>\u20ac<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Palo selfie<\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">5<strong>\u20ac<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Varios (Cables, material adicional&#8230;)<\/td><td class=\"has-text-align-center\" data-align=\"center\">Variable<\/td><td class=\"has-text-align-center\" data-align=\"center\">Variable<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\">Total 47,89<strong>\u20ac<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Diagrama del circuito<\/h2>\n\n\n\n<p class=\"has-medium-font-size\">Se incluye un diagrama del circuito para su entendimiento y su implementaci\u00f3n, adem\u00e1s se presenta un ejemplo de c\u00f3mo podr\u00eda quedar el circuito de la forma m\u00e1s compacta posible.<\/p>\n\n\n\n<figure class=\"wp-block-image alignwide size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"725\" height=\"444\" src=\"https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-31.png\" alt=\"\" class=\"wp-image-9728\" srcset=\"https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-31.png 725w, https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-31-300x184.png 300w\" sizes=\"auto, (max-width: 725px) 100vw, 725px\" \/><figcaption class=\"wp-element-caption\">Diagramas principales de la circuiter\u00eda<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image alignwide size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"434\" src=\"https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-32-1024x434.png\" alt=\"\" class=\"wp-image-9729\" title=\"Spectacular Jarv (1).png\" srcset=\"https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-32-1024x434.png 1024w, https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-32-300x127.png 300w, https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-32-768x326.png 768w, https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-32-1536x651.png 1536w, https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-32.png 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Diagrama de Hardware<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image alignwide size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-4-edited.jpeg\" alt=\"\" class=\"wp-image-9731\" title=\"WhatsApp Image 2025-12-14 at 19.29.55 (1).jpeg\" srcset=\"https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-4-edited.jpeg 1920w, https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-4-edited-300x169.jpeg 300w, https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-4-edited-1024x576.jpeg 1024w, https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-4-edited-768x432.jpeg 768w, https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/image-4-edited-1536x864.jpeg 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><figcaption class=\"wp-element-caption\">Hardware implementado<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00f3digo<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ Configuraci\u00f3n de Pines\nconst int pulsePin = 8;   \nconst int readPin = A0;    \nconst int ledLow = 3;      \/\/ LED Verde\nconst int ledMed = 4;      \/\/ LED Amarillo\nconst int ledHigh = 5;     \/\/ LED Rojo\nconst int buzzerPin = 6;   \/\/ Zumbador\n\n\/\/ VARIABLES DE AJUSTE\nint baseline = 0;          \n\n\/\/ SENSIBILIDAD\nint sensitivity = 200;      \n\n\/\/ M\u00c1XIMO\nint maxDetection = 600;     \n\nvoid setup() {\n  pinMode(pulsePin, OUTPUT);\n  pinMode(ledLow, OUTPUT);\n  pinMode(ledMed, OUTPUT);\n  pinMode(ledHigh, OUTPUT);\n  pinMode(buzzerPin, OUTPUT);\n  \n  Serial.begin(9600);\n  \n  \/\/ Calibraci\u00f3n\n  \n  digitalWrite(ledLow, HIGH); delay(100);\n  digitalWrite(ledMed, HIGH); delay(100);\n  digitalWrite(ledHigh, HIGH); delay(100);\n  resetLeds();\n\n  while(baseline &lt; 15000){\n    digitalWrite(ledLow, HIGH);\n    digitalWrite(ledHigh, HIGH); delay(500);\n    resetLeds();\n    digitalWrite(ledMed, HIGH); delay(500);\n    resetLeds();\n\n    long total = 0;\n    for(int i=0; i&lt;500; i++) {\n      total += measureCoil();\n      delay(2);\n    }\n\n    baseline = total \/ 500;\n  }\n\n  tone(buzzerPin, 2000, 100);\n  delay(100);\n  \n}\n\nvoid loop() {\n  int currentVal = measureCoil();\n  int diff = abs(currentVal - baseline);\n  \n  resetLeds();\n  \n  \n  \/\/ VERDE: Detecci\u00f3n Inicial\n  if (diff &gt; sensitivity) {\n    digitalWrite(ledLow, HIGH);\n  }\n  \n  \/\/ AMARILLO: Detecci\u00f3n Media\n  if (diff &gt; sensitivity + 40) {    \n    digitalWrite(ledMed, HIGH);     \n  }\n  \n  \/\/ ROJO: Detecci\u00f3n Muy Cercana\n  if (diff &gt; sensitivity + 100) {    \n    digitalWrite(ledHigh, HIGH);    \n  }\n\n  \/\/ SONIDO\n  if (diff &gt; sensitivity + 20) { \n    int toneFreq = map(diff, sensitivity, maxDetection, 500, 2000);\n    toneFreq = constrain(toneFreq, 500, 2000); \n    tone(buzzerPin, toneFreq);\n  } else {\n    noTone(buzzerPin); \n  }\n  \n  delay(10); \n}\n\n\/\/ FUNCI\u00d3N DE LECTURA \nint measureCoil() {\n  int measurement = 0;\n  \n  for(int i = 0; i &lt; 15; i++) {\n    digitalWrite(pulsePin, HIGH); \n    delayMicroseconds(150);       \n    digitalWrite(pulsePin, LOW);  \n    \n    delayMicroseconds(8);        \n    \n    measurement += analogRead(readPin); \n  }\n  return measurement; \n}\n\nvoid resetLeds() {\n  digitalWrite(ledLow, LOW);\n  digitalWrite(ledMed, LOW);\n  digitalWrite(ledHigh, LOW);\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Ejemplo de funcionamiento<\/h2>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"850\" style=\"aspect-ratio: 474 \/ 850;\" width=\"474\" controls src=\"https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2025\/12\/8mb.video-nO3-feqADurU.mp4\"><\/video><figcaption class=\"wp-element-caption\">Funcionamiento del detector<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Comentarios adicionales<\/h2>\n\n\n\n<p class=\"has-medium-font-size\">Debido a los limitados recursos con los que se contaba para la realizaci\u00f3n de este proyecto, se present\u00f3 un problema pr\u00e1cticamente imposible de solucionar. En el c\u00f3digo el valor baseline debe oscilar 15000 como m\u00ednimo y 15250 como m\u00e1ximo, pero debido a que el baseline se calcula cada vez que se enciende el detector haciendo mediciones, como la bobina es de cobre, esta se calienta y se excita el\u00e9ctricamente, haciendo que ese valor calculado se salga del rango v\u00e1lido, imposibilitado el uso del detector. Una soluci\u00f3n ser\u00eda implementar alg\u00fan mecanismo que permita enfriar y mantener a una temperatura ideal la bobina de cobre, para que nunca se calcule un baseline fuera del rango.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introducci\u00f3n El proyecto del grupo 14 consiste en un detector de metales casero realizado con la placa Arduino. El funcionamiento se basa en la ley de inducci\u00f3n de Faraday, un cambio en el campo&#46;&#46;&#46;<\/p>\n","protected":false},"author":311,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9536","post","type-post","status-publish","format-standard","hentry","category-proyectos"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>DETECTOR DE METALES - Grupo 14 - Proyectos con Arduino.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.etsii.urjc.es\/dseytr\/detector-de-metales-grupo-14\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DETECTOR DE METALES - Grupo 14 - Proyectos con Arduino.\" \/>\n<meta property=\"og:description\" content=\"Introducci\u00f3n El proyecto del grupo 14 consiste en un detector de metales casero realizado con la placa Arduino. 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