This Processing sketch controls the playback of a Quicktime movie using serial data. To use it, send a serial value from 0 – 255. The movie position will be set based on that value. 0 = beginning of movie, 255 = end of movie. It doesn’t matter what’s sending the serial data, as long as the value is between 0 and 255.\n<\/p>\n
<\/p>\n
\n\/* \n Serial Movie controller \n Language: Processing\n \n Reads a value from 0 - 255 from the serial port. Then uses that \n value to control playback of a quicktime movie.\n \n by Tom Igoe\n Created 8 Oct. 2006\n Modified:\n \n *\/\n\n\nimport processing.serial.*;\nimport processing.video.*;\n\nSerial myPort; \/\/ The serial port\nint sensorValue; \/\/ value of the byte received\n\nMovie myMovie; \/\/ variable to store an instance of the movie library\nfloat movieDuration; \/\/ duration of the movie you're using\n\n\nvoid setup() {\n \/\/ set the window size:\n size(200,200);\n\n \/\/ List all the available serial ports\n println(Serial.list());\n\n \/\/ I know that the first port in the serial list on my mac\n \/\/ is always my Arduino module, so I open Serial.list()[0].\n \/\/ Change the 0 to the appropriate number of the serial port\n \/\/ that your microcontroller is attached to.\n myPort = new Serial(this, Serial.list()[0], 9600);\n\n \/\/ set the framerate for this sketch:\n framerate(30);\n\n \/\/ fill in your own movie here. Place it in a folder called \"Data\"\n \/\/ inside your sketch folder:\n myMovie = new Movie(this, \"station.mov\");\n myMovie.loop();\n \/\/ get the movie duration:\n movieDuration = myMovie.duration();\n}\n\nvoid draw() {\n background(0);\n\n \/\/ if there's a movie to read, read it:\n if(myMovie.available()) {\n myMovie.read();\n }\n\n \/\/ calculate the movie position based on the value from the sensor.\n \/\/ the sensor value can range from 0 - 255, so dividing the sensorValue\n \/\/ by 255 and multiplying by the duration always gives some fraction of\n \/\/ the total movie duration:\n float moviePosition = ((float)sensorValue \/ (float)255) * movieDuration;\n\n \/\/ jump to the calculated movie position:\n myMovie.jump(moviePosition); \n\n \/\/ draw the movie:\n image(myMovie, 0, 0);\n}\n\n\n\/\/ serialEvent method is run automatically by the Processing applet\n\/\/ whenever the buffer reaches the byte value set in the bufferUntil() \n\/\/ method in the setup():\n\nvoid serialEvent(Serial myPort) { \n \/\/ read the serial buffer:\n sensorValue = myPort.read();\n} \n<\/pre>\nHere’s a simple Wiring\/Arduino program to send data to this Processing program. Attach a potentiometer or other analog sensoe to analog input 0:\n<\/p>\n
\nvoid setup() {\n \/\/ open the serial port at 9600 bits per second:\n Serial.begin(9600);\n}\n\nvoid loop() {\n \/\/ read the potentiometer, reduce the range to 0 - 255 by dividing by 4:\n int analogValue = analogIn(0) \/4;\n\n \/\/ send the value out the serial port:\n Serial.print(analogValue, BYTE);\n \n \/\/ delay 10 milliseconds so the analog to digital converter settles:\n delay(10);\n}\n<\/pre>\n","protected":false},"excerpt":{"rendered":"by Tom Igoe Created 8 Oct. 2006 Modified: *\/ import processing.serial.*; import processing.video.*; Serial myPort; \/\/ The serial port int sensorValue; \/\/ value of the byte received Movie myMovie; \/\/ variable to store an instance of the movie library float movieDuration; \/\/ duration of the movie you’re using void setup() { \/\/ set the window size: size(200,200); \/\/ List all the available serial ports println(Serial.list()); \/\/ I know that the first port in the serial list on my mac \/\/ is always my Arduino module, so I open Serial.list()[0]…. Place it in a folder called “Data” \/\/ inside your sketch folder: myMovie = new Movie(this, “station.mov”); myMovie.loop(); \/\/ get the movie duration: movieDuration = myMovie.duration(); } void draw() { background(0); \/\/ if there’s a movie to read, read it: if(myMovie.available()) { myMovie.read(); } \/\/ calculate the movie position based on the value from the sensor.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,7],"tags":[],"class_list":["post-20","post","type-post","status-publish","format-standard","hentry","category-arduinowiring","category-Processing"],"_links":{"self":[{"href":"https:\/\/www.tigoe.com\/pcomp\/code\/wp-json\/wp\/v2\/posts\/20","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tigoe.com\/pcomp\/code\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tigoe.com\/pcomp\/code\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tigoe.com\/pcomp\/code\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tigoe.com\/pcomp\/code\/wp-json\/wp\/v2\/comments?post=20"}],"version-history":[{"count":0,"href":"https:\/\/www.tigoe.com\/pcomp\/code\/wp-json\/wp\/v2\/posts\/20\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tigoe.com\/pcomp\/code\/wp-json\/wp\/v2\/media?parent=20"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tigoe.com\/pcomp\/code\/wp-json\/wp\/v2\/categories?post=20"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tigoe.com\/pcomp\/code\/wp-json\/wp\/v2\/tags?post=20"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}