{"id":775,"date":"2015-02-20T12:41:05","date_gmt":"2015-02-20T01:41:05","guid":{"rendered":"http:\/\/bandetech.com\/blog\/?page_id=775"},"modified":"2015-03-25T17:10:36","modified_gmt":"2015-03-25T06:10:36","slug":"remote-shutter-release-arduino-code","status":"publish","type":"page","link":"https:\/\/bandetech.com\/blog\/remote-shutter-release-arduino-code\/","title":{"rendered":"Remote shutter release — Arduino code"},"content":{"rendered":"

The Arduino code and schematic for the Remote camera shutter release<\/a> project is included here.<\/p>\n

This is written for use on a MicroView, which includes a 64 x 48 pixel OLED display. Comments are included in the code and the schematic is below, but for the most part you’ll have to work out what’s going on for yourself (or leave a comment below, and I’ll get back to you).<\/p>\n

\"\"<\/a><\/p>\n

This project shows\u00a0a flagrant disregard for debouncing switch input, but it works and saved me the effort of being rigorous about it. Variable range checking isn’t high on the list of things to do either. My apologies if either offends you, but pragmatism wins. \ud83d\ude09<\/p>\n

\r\n\r\n#include <7segment.h>\r\n#include <font5x7.h>\r\n#include <font8x16.h>\r\n#include <fontlargenumber.h>\r\n#include <MicroView.h>\r\n#include <Servo.h>\r\n\r\n#define servoPIN 6\r\n#define buttonPIN 2\r\n#define potPIN A1\r\n\r\n\/*\r\nUse uView to remotely activate camera shutter, via servo arm\r\n\r\n- On first boot, read switch pin, if held down, enable Interval mode\r\n- Setup: read Analog pot, adjust to set autofocus rotation for Neutral, Half press & Full\r\n- Enter loop to wait for click & then activate position1, then position2\r\n\r\nv0.6\r\nv0.65 corrected variable type for maxIdleTime (was int)\r\n*\/\r\n\r\nServo myservo; \/\/ create servo object\r\n\r\nboolean snap = false, interval = false;\r\nint pNeutral, pFocus, pShutter, vr1, count=0;\r\nunsigned long milliVar, snapTime, wiggleTime;\r\nconst unsigned long maxIdleTime = 60000; \/\/ millis between keepAlive presses\r\n\r\nvoid setup() {\r\nmyservo.attach(servoPIN);\r\nmyservo.write(90); \/\/ set servo to mid position\r\npinMode(buttonPIN, INPUT_PULLUP);\r\npinMode(potPIN, INPUT);\r\n\r\nuView.begin(); \/\/ begin MicroView\r\nuView.clear(ALL); \/\/ erase hardware memory inside the OLED controller\r\nuView.display(); \/\/ display the content in the buffer memory, by default it is the uView logo\r\ndelay(1000);\r\n\r\nfor (int i=0; i<10; i++) { \/\/ loop a few times, checking to see if button has been held down at boot\r\nif (!digitalRead(buttonPIN)) { \/\/ pin is active LOW\r\ninterval = true; \/\/ if button was down, activate interval timer mode\r\nbreak;\r\n}\r\ndelay(10);\r\n}\r\nif (interval) { \/\/ interval mode?\r\nmyservo.write(80); \/\/ wiggle servo to acknowledge\r\ndelay(100);\r\nmyservo.write(100);\r\ndelay(100);\r\nmyservo.write(80);\r\ndelay(100);\r\nmyservo.write(100);\r\ndelay(100);\r\nuView.clear(PAGE); \/\/ write message confirming interval mode\r\nuView.setFontType(0); \/\/ use 1 for 8x16 font, 0 for 5x7\r\nuView.setCursor(8,13);\r\nuView.print("Interval");\r\nuView.setCursor(20,23);\r\nuView.print("mode");\r\nuView.setCursor(11,33);\r\nuView.print("enabled");\r\nuView.display();\r\ndelay(2000);\r\n}\r\n\r\n\/\/ calibration process, part 1 - set position where camera button not active\r\nuView.clear(PAGE);\r\nuView.setFontType(0); \/\/ use 1 for 8x16 font, 0 for 5x7\r\nuView.setCursor(1,1); \/\/ drop to lower half of display\r\nuView.print("Calibrate");\r\nuView.line(0,9,56,9);\r\nuView.setCursor(1,12);\r\nuView.print("Set zero");\r\nuView.setCursor(1,20);\r\nuView.print("position,");\r\nuView.setCursor(1,28);\r\nuView.print("then press");\r\nuView.setCursor(1,36);\r\nuView.print("button.");\r\nuView.display(); \/\/ display the content in the buffer memory, by default it is the uView logo\r\npNeutral = readServo(); \/\/ neutral is the last position of the servo before click\r\ndelay(1000);\r\n\r\n\/\/ calibration process, part 2 - set position where camera button half pressed\r\nuView.clear(PAGE);\r\nuView.setFontType(0); \/\/ use 1 for 8x16 font, 0 for 5x7\r\nuView.setCursor(1,1); \/\/ drop to lower half of display\r\nuView.print("Calibrate");\r\nuView.line(0,9,56,9);\r\nuView.setCursor(1,12);\r\nuView.print("Set 1st");\r\nuView.setCursor(1,20);\r\nuView.print("position,");\r\nuView.setCursor(1,28);\r\nuView.print("then press");\r\nuView.setCursor(1,36);\r\nuView.print("button.");\r\nuView.display();\r\npFocus = readServo(); \/\/ focus active is the last position of the servo before click\r\ndelay(1000);\r\n\r\n\/\/ calibration process, part 3 - set position where camera button fully pressed\r\nuView.clear(PAGE);\r\nuView.setFontType(0); \/\/ use 1 for 8x16 font, 0 for 5x7\r\nuView.setCursor(1,1); \/\/ drop to lower half of display\r\nuView.print("Calibrate");\r\nuView.line(0,9,56,9);\r\nuView.setCursor(1,12);\r\nuView.print("Set 2nd");\r\nuView.setCursor(1,20);\r\nuView.print("position,");\r\nuView.setCursor(1,28);\r\nuView.print("then press");\r\nuView.setCursor(1,36);\r\nuView.print("button.");\r\nuView.display();\r\npShutter = readServo(); \/\/ save the last position of the servo before click\r\ndelay(1000);\r\n\r\nmyservo.write(pNeutral); \/\/ back to neutral\r\nattachInterrupt(0,pushButton,FALLING); \/\/ start interrupt handler for switch input\r\n\r\n\/\/ Interval mode?\r\nif (interval) { doInterval(); }\r\n\r\n\/\/ Ready to go. Display message, set timer\r\nsnapTime = millis();\r\nuView.clear(PAGE);\r\nuView.setFontType(1);\r\nuView.setCursor(9,2);\r\nuView.print("Ready");\r\nuView.line(8,17,54,17);\r\nuView.display(); \/\/ display the content in the buffer memory, by default it is the uView logo\r\nwiggleTime = millis() + maxIdleTime;\r\n\r\n} \/\/ end setup\r\n\r\nvoid loop() {\r\n\r\nmilliVar = millis();\r\n\r\nuView.setFontType(0); \/\/ use 1 for 8x16 font, 0 for 5x7\r\nuView.setCursor(9,20);\r\nuView.print("n="); \/\/ display count of images taken\r\nuView.print(count);\r\nuView.setCursor(9,30);\r\nuView.print("t="); \/\/ display time since last shutter press\r\nuView.print((milliVar-snapTime)\/1000);\r\nuView.print(" ");\r\nuView.display(); \/\/ display the content in the buffer memory, by default it is the uView logo\r\n\r\nif(snap) { \/\/ Button interrupt been called?\r\ntakePic(); \/\/ take photo\r\ncount++; \/\/ increment counter\r\nsnap = false; \/\/ reset interrupt\r\nmilliVar = millis();\r\nwiggleTime = milliVar + maxIdleTime; \/\/ run keepAlive motion again in maxIdleTime millis\r\n}\r\n\r\nif(milliVar > wiggleTime) { \/\/ half press button every maxIdleTime millis to keep camera awake\r\ndelay(50);\r\nmyservo.write(pFocus);\r\ndelay(500);\r\nmyservo.write(pNeutral);\r\nwiggleTime = milliVar + maxIdleTime; \/\/ run keepAlive motion again in maxIdleTime millis\r\n}\r\ndelay(250); \/\/ just to slow the loop down a bit\r\n\r\n} \/\/ end of main loop\r\n\r\n\/\/ Interrupt Service Routine for remote shutter button\r\nvoid pushButton() {\r\nsnap = true;\r\n} \/\/ end pushbutton\r\n\r\n\/\/ Move servo to pFocus, delay, then pShutter, delay, then back to pNeutral\r\nvoid takePic() {\r\ndelay(50);\r\nmyservo.write(pFocus);\r\ndelay(1000);\r\nmyservo.write(pShutter);\r\ndelay(750);\r\nmyservo.write(pNeutral);\r\nsnapTime = millis();\r\n} \/\/ end takePic\r\n\r\n\/\/ Move servo around, based on analogue input from pot.\r\nint readServo(){ \/\/ read from potentiometer, rotate servo in sync with pot. Return servo angle when button is pressed\r\nint angle;\r\n\r\nwhile(digitalRead(buttonPIN)) {\r\nvr1 = analogRead(potPIN);\r\nangle = map(vr1,0,1023,45,135); \/\/ mapping 45 degrees either side of the 90 degree position\r\nmyservo.write(angle);\r\ndelay(50);\r\n}\r\nreturn angle;\r\n} \/\/ end readServo\r\n\r\n\/\/ Interval timer mode -- setup, then run infinite loop\r\nvoid doInterval(){\r\nunsigned long snapTime, timeLeft;\r\nint sInt;\r\n\r\nuView.clear(PAGE);\r\nuView.setFontType(0); \/\/ use 1 for 8x16 font, 0 for 5x7\r\nuView.setCursor(1,1);\r\nuView.print("Timing");\r\nuView.line(0,9,38,9);\r\nuView.setCursor(1,12);\r\nuView.print("Set interval");\r\nuView.setCursor(1,20);\r\nuView.print("then press");\r\nuView.setCursor(1,28);\r\nuView.print("button.");\r\nuView.display(); \/\/ display the content in the buffer memory, by default it is the uView logo\r\n\r\nwhile(digitalRead(buttonPIN)) { \/\/ read pot and display delay time, save value when button pressed\r\nvr1 = analogRead(potPIN);\r\nsInt = map(vr1,5,1020,240,5); \/\/ mapping interval to between 5 and 240 seconds\r\nuView.setCursor(1,36);\r\nuView.print(sInt);\r\nuView.print("s ");\r\nuView.display(); \/\/ display the content in the buffer memory, by default it is the uView logo\r\ndelay(75);\r\n}\r\nsInt = sInt * 1000; \/\/ convert seconds to millis\r\ndelay(1000);\r\nuView.clear(PAGE);\r\nuView.setFontType(0); \/\/ use 1 for 8x16 font, 0 for 5x7\r\nuView.setCursor(8,2);\r\nuView.print("Interval");\r\nuView.line(7,11,57,11);\r\nuView.display(); \/\/ display the content in the buffer memory, by default it is the uView logo\r\n\r\nsnapTime = millis() + sInt;\r\nsnap = false; \/\/ just make sure the interrupt is cleared\r\n\/\/ set up complete -- begin interval mode\r\n\r\n\/\/ start interval photos, never exit this loop\r\nwhile (true) {\r\ntimeLeft = (snapTime - millis())\/1000;\r\n\r\nif (snap) { \/\/ if the button was pressed, and there's time to take a photo...\r\nif (timeLeft > 2) {\r\ntakePic();\r\ncount++;\r\n}\r\nsnap = false;\r\n}\r\n\r\nuView.setFontType(0); \/\/ use 1 for 8x16 font, 0 for 5x7\r\nuView.setCursor(9,20);\r\nuView.print("n=");\r\nuView.print(count);\r\nuView.setCursor(9,30);\r\nuView.print("t=");\r\nuView.print(timeLeft);\r\nuView.print(" ");\r\nuView.display(); \/\/\r\nif(timeLeft <= 0) {\r\ntakePic();\r\ncount++;\r\nsnapTime = millis() + sInt;\r\n}\r\ndelay(300);\r\n}\r\n\r\n} \/\/ doInterval\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
The Arduino code and schematic for the Remote camera shutter release project is included here. This is written for use on a MicroView, which includes a 64 x 48 pixel OLED display. Comments are included in the code and the … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":823,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-775","page","type-page","status-publish","has-post-thumbnail","hentry"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P8H2X3-cv","_links":{"self":[{"href":"https:\/\/bandetech.com\/blog\/wp-json\/wp\/v2\/pages\/775","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bandetech.com\/blog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/bandetech.com\/blog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/bandetech.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bandetech.com\/blog\/wp-json\/wp\/v2\/comments?post=775"}],"version-history":[{"count":15,"href":"https:\/\/bandetech.com\/blog\/wp-json\/wp\/v2\/pages\/775\/revisions"}],"predecessor-version":[{"id":841,"href":"https:\/\/bandetech.com\/blog\/wp-json\/wp\/v2\/pages\/775\/revisions\/841"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bandetech.com\/blog\/wp-json\/wp\/v2\/media\/823"}],"wp:attachment":[{"href":"https:\/\/bandetech.com\/blog\/wp-json\/wp\/v2\/media?parent=775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}