{"id":4172,"date":"2021-05-18T08:39:00","date_gmt":"2021-05-18T08:39:00","guid":{"rendered":"https:\/\/blogs.etsii.urjc.es\/dseytr\/?p=4172"},"modified":"2021-05-18T08:40:47","modified_gmt":"2021-05-18T08:40:47","slug":"zacarias-el-oso-espia","status":"publish","type":"post","link":"https:\/\/blogs.etsii.urjc.es\/dseytr\/zacarias-el-oso-espia\/","title":{"rendered":"Zacar\u00edas el Oso Esp\u00eda"},"content":{"rendered":"\n<p class=\"has-huge-font-size\">INTRODUCCI\u00d3N<\/p>\n\n\n\n<p>Somos el grupo 2 formado por Enrique Albaladejo Herrero, Daniel Borreguero Albitos y Jes\u00fas del Remedio Garc\u00eda Fructuoso. Este proyecto originalmente fue concebido como \u201c<em>Almost spy glassesinator\u201d, <\/em>unas gafas esp\u00eda que recogieran video y sonido, y lo almacenasen en una tarjeta SD, pero, debido a complicaciones, detalladas m\u00e1s abajo en el documento en la secci\u00f3n de \u201cProblemas y Soluciones encontradas\u201d, el proyecto fue reimaginado como \u201c<em>Zacar\u00edas el oso esp\u00eda\u201d <\/em>un osito de peluche que en funci\u00f3n de la luz ambiente recoja video a trav\u00e9s de la c\u00e1mara que tiene en el ojo y lo muestre por pantalla a trav\u00e9s del serial.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"video-container\"><iframe loading=\"lazy\" title=\"Zacar\u00edas el Oso Esp\u00eda - Proyecto SEyTR URJC - Grupo 2\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/1T15Mou5t_o?feature=oembed&#038;wmode=opaque\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><figcaption>Video del proyecto<\/figcaption><\/figure>\n\n\n\n<p class=\"has-huge-font-size\">FUNCIONAMIENTO<\/p>\n\n\n\n<p>Cuando hay un nivel de luz superior a 10 empieza a mandar los fotogramas al serial, cuando la luz baja por debajo de 10 se detiene.<\/p>\n\n\n\n<p class=\"has-huge-font-size\">IMPLEMENTACI\u00d3N HARDWARE<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Conexiones OV7670 a Arduino Nano 33 BLE<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; 3.3 conectado a 3.3<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; GND conectado a GND<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; SIOC conectado a A5<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; SIOD conectado a A4<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; VSYNC conectado a 8<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; HREF conectado a A1<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; XCLK conectado a 9<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; PCLK conectado a A0<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; D7 conectado a 4<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; D6 conectado a 6<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; D5 conectado a 5<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; D4 conectado a 3<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; D3 conectado a 2<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; D2 conectado a RX<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; D1 conectado a TX<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8211; D0 conectado a 10<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Conexiones LDR<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">      &#8211;&nbsp; Conectado al pin de 5v<br>      &#8211;&nbsp; Conectado a A7<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Resistencia 100k\u03a9<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">      &#8211;&nbsp; Conectado a GND<br>      &#8211;&nbsp; Conectado a A7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blogs.etsii.urjc.es\/wp-content\/uploads\/sites\/8\/2021\/05\/imagen_2021-05-18_100014.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"592\" src=\"https:\/\/blogs.etsii.urjc.es\/wp-content\/uploads\/sites\/8\/2021\/05\/imagen_2021-05-18_100014-1024x592.png\" alt=\"\" class=\"wp-image-4173\" srcset=\"https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2021\/05\/imagen_2021-05-18_100014-1024x592.png 1024w, https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2021\/05\/imagen_2021-05-18_100014-300x174.png 300w, https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2021\/05\/imagen_2021-05-18_100014-768x444.png 768w, https:\/\/blogs.etsii.urjc.es\/dseytr\/wp-content\/uploads\/sites\/8\/2021\/05\/imagen_2021-05-18_100014.png 1374w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p class=\"has-huge-font-size\">COSTE DE MATERIALES<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>COMPONENTE<\/strong><\/td><td><strong>UNIDADES<\/strong><\/td><td><strong>COSTE\/UNIDAD (\u20ac)<\/strong><\/td><\/tr><tr><td>C\u00e1mara OV7670<\/td><td>1<\/td><td>7.01<\/td><\/tr><tr><td>Cables Arduino (M-H)<\/td><td>1 Pack de 20 uds<\/td><td>3<\/td><\/tr><tr><td>Arduino Nano 33 BLE<\/td><td>1<\/td><td>24<\/td><\/tr><tr><td>Oso de peluche (Zacar\u00edas)<\/td><td>1<\/td><td>9.60<\/td><\/tr><tr><td>TOTAL<\/td><td><\/td><td>43.61<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-huge-font-size\">PROBLEMAS Y SOLUCIONES ENCONTRADOS<\/p>\n\n\n\n<p><strong>Problema 1.<\/strong> La c\u00e1mara no era compatible con la placa Arduino UNO.<\/p>\n\n\n\n<p>Decidimos comprar la placa Arduino Nano 33 BLE.<\/p>\n\n\n\n<p><strong>Problema 2<\/strong>. La c\u00e1mara ocupaba muchos pines por lo que hubo que hacer un replanteamiento de la pr\u00e1ctica.<\/p>\n\n\n\n<p>Al final optamos por cambiar el proyecto de unas gafas esp\u00edas a un oso esp\u00eda.<\/p>\n\n\n\n<p><strong>Problema 3<\/strong>. El lector SD (DFPlayer) era \u00fanicamente de lectura y no de escritura.<\/p>\n\n\n\n<p>Comprar el SPI Reader SD para poder escribir en una tarjeta SD.<\/p>\n\n\n\n<p><strong>Problema 4<\/strong>. Los sensores de sonido pens\u00e1bamos que eran micr\u00f3fonos, pero no lo eran y no pod\u00edamos grabar sonido claro con ellos. Solo produc\u00edamos ruido ligeramente parecido al sonido de entrada.<\/p>\n\n\n\n<p>Decidimos descartar la idea de grabar el sonido.<\/p>\n\n\n\n<p><strong>Problema 5<\/strong>. No conseguimos guardar las im\u00e1genes en la SD a trav\u00e9s del SPI Reader SD, no encontramos el motivo ya que ni siquiera creaba carpetas con los c\u00f3digos de ejemplo de la librer\u00eda, adem\u00e1s fallaba con distintas tarjetas SD, por lo que, supusimos que el propio lector no funcionaba correctamente.<\/p>\n\n\n\n<p>Para solventar esto, intentamos pasar las im\u00e1genes al pc a trav\u00e9s del Bluetooth de la placa de arduino, ya que la Nano 33 BLE lo tiene incorporado.<\/p>\n\n\n\n<p><strong>Problema 6.<\/strong> No encontramos la forma de hacer el traspaso mediante Bluetooth, ya que todos los tutoriales que encontramos explicaban como hacer otras cosas, o usaban componentes externos de Bluetooth que utilizan librer\u00edas distintas. Al final decidimos pasar las im\u00e1genes al PC por cable.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-huge-font-size\">C\u00d3DIGO ARDUINO IDE<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;Arduino_OV767X.h&gt;\n\nint luz = 7;\nint bytesPerFrame;\nbyte data&#091;320 * 240 * 2]; \n\nvoid setup() {\n  Serial.begin(115200);\n  while (!Serial);\n\n  if (!Camera.begin(QVGA, RGB565, 5)) {\n    Serial.println(\"Failed to initialize camera!\");\n    while (1);\n  }\n\n  bytesPerFrame = Camera.width() * Camera.height() * Camera.bytesPerPixel();\n\n}\n\nvoid loop() {\n  Camera.readFrame(data);\n  if (analogRead(luz)&gt;10){\n    Serial.write(data, bytesPerFrame);\n  }\n}<\/code><\/pre>\n\n\n\n<p class=\"has-huge-font-size\">C\u00d3DIGO EN PROCESSING<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import processing.serial.*;\nimport java.nio.ByteBuffer;\nimport java.nio.ByteOrder;\n\nSerial myPort;\n\nfinal int cameraWidth = 320;\nfinal int cameraHeight = 240;\nfinal int cameraBytesPerPixel = 2;\nfinal int bytesPerFrame = cameraWidth * cameraHeight * cameraBytesPerPixel;\nPImage myImage;\nbyte&#091;] frameBuffer = new byte&#091;bytesPerFrame];\n\nvoid setup(){\n  size(320, 240);\n  myPort = new Serial(this, \"COM5\", 9600);\n  myPort.buffer(bytesPerFrame);  \n  myImage = createImage(cameraWidth, cameraHeight, RGB);\n}\n\nvoid draw(){\n  image(myImage, 0, 0);\n}\n\nvoid serialEvent(Serial myPort) {\n  myPort.readBytes(frameBuffer);\n\n  ByteBuffer bb = ByteBuffer.wrap(frameBuffer);\n  bb.order(ByteOrder.BIG_ENDIAN);\n\n  int i = 0;\n\n  while (bb.hasRemaining()) {\n    short p = bb.getShort();\n \n    int r = ((p &gt;&gt; 11) &amp; 0x1f) &lt;&lt; 3;\n    int g = ((p &gt;&gt; 5) &amp; 0x3f) &lt;&lt; 2;\n    int b = ((p &gt;&gt; 0) &amp; 0x1f) &lt;&lt; 3;\n\n    myImage .pixels&#091;i++] = color(r, g, b);\n  }\n myImage .updatePixels();\n\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>INTRODUCCI\u00d3N Somos el grupo 2 formado por Enrique Albaladejo Herrero, Daniel Borreguero Albitos y Jes\u00fas del Remedio Garc\u00eda Fructuoso. Este proyecto originalmente fue concebido como \u201cAlmost spy glassesinator\u201d, unas gafas esp\u00eda que recogieran video&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":4185,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4172","post","type-post","status-publish","format-standard","has-post-thumbnail","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>Zacar\u00edas el Oso Esp\u00eda - Proyectos con Arduino.<\/title>\n<meta name=\"description\" content=\"Zacar\u00edas es un osito de peluche que en funci\u00f3n de la luz ambiente recoge video a trav\u00e9s de la c\u00e1mara que tiene en el ojo y lo muestre por pantalla.\" \/>\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\/zacarias-el-oso-espia\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Zacar\u00edas el Oso Esp\u00eda - 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