├── LICENSE ├── Leaf Shutter.jpg ├── PCB board.jpg ├── README.md ├── Schematic.jpg ├── Servo Shutter.mp4 ├── Servo shutter STLs.zip ├── Servo shutter.jpg ├── Shutter flash sync.mp4 ├── shutter.ino └── shuttergerber.zip /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /Leaf Shutter.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hackaninstant/Servo-Shutter/ab3577f66c806189194c23d18fd870ad6752a82b/Leaf Shutter.jpg -------------------------------------------------------------------------------- /PCB board.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hackaninstant/Servo-Shutter/ab3577f66c806189194c23d18fd870ad6752a82b/PCB board.jpg -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Servo-Shutter 2 | A Servo operated 3D Printed Shutter for Arduino Nano 3 | 4 | This project was designed for a 3D printed servo operated leaf shutter and Arduino Nano. Being servo operated means the top shutter speed is limited to the speed of the servo motor. Since most 9g servos operate around 100ms, the shutter will be limited to around 1/10 second fully open. Faster speeds can be added, but the shutter won't open completely, which should work fine for smaller apertures. 5 | 6 | The schematic can be used for this and other arduino projects that use 3 pin sensors. The zip file contains gerber files for PCB production. 7 | 8 | An overview, assembly, and features are demonstrated on youtube: https://www.youtube.com/watch?v=IbccD1TD0Z8 9 | 10 | Features: 11 | 12 | - small footprint: will work with Nano Mega 168 boards 13 | - 4 button operation 14 | - optional rotary encoder capability 15 | - uses I2C 128x64 SSD1306 display 16 | - shutter speeds from 1/13 to 10 minutes (coded down to 1/20 but blades may not open fully) 17 | - cancelable self timer up to 255 seconds 18 | - built in servo adjustments for Shutter Open, Close, and relief angles, as well as servo delay 19 | - adjustable button repeat rate delay 20 | - X or M flash sync (electronic flash for now) 21 | - Operates on 6 volts (4AA) for the servo, and 7.4 volts for the arduino. The arduino will run with as little as 3 volts. 22 | 23 | Requirements: 24 | 25 | - 3D printed servo operated shutter from https://www.thingiverse.com/thing:6033871 (or available here) 26 | - Arduino Nano, 16K or 32K version 27 | - 4 momentary switches 28 | - I2C SSD1306 128x64 display 29 | - 9g servo 30 | - TLP 127 Opto isolator with 330 Ohm resistor (Optional for flash sync) 31 | - rotary encoder (optional) 32 | 33 | Configuration: 34 | 35 | Nano: 36 | - D3: Minus Switch 37 | - D4: Plus Switch 38 | - D5: Shutter Switch 39 | - D6: Menu Switch 40 | - D9: Servo data 41 | - D10: (optional) 330 Ohm resistor then to TLP127 Opto Isolator 42 | - A4: SDA on I2C SSD1306 43 | - A5: SCL on I2C SSD1306 44 | - 3.3V: VCC on I2C SSD1306 45 | - VIN: 7.5v (5 AA or 2 LiPo batteries) 46 | - GND: GND on I2C SSD1306, GND on servo, pin 3 on TLP127 47 | - D2: (optional) rotary encoder switch 48 | - D7: (optional) rotary encoder CLK 49 | - D8: (optional) rotary encoder DT 50 | 51 | SSD1306 OLED display: 52 | - SDA: A4 on Nano 53 | - SCL: A5 on Nano 54 | - GND: GND on Nano 55 | - VCC: 3.3v on Nano 56 | 57 | Servo: 58 | - Data: D9 on Nano 59 | - VCC: 6-7 volts on separate battery from Nano 60 | - GND: GND on Nano 61 | 62 | TLP127 Opto Isolator (optional): 63 | - Pin 1 (Anode): 330 Ohm resistor, then to D10 64 | - Pin 3 (Cathode): GND 65 | - Pin 4 (Emiter): GND (outside barrel) on flash PC connection 66 | - Pin 6 (Collector): VCC (inside barrel) on flash PC connection 67 | 68 | Rotary Encoder (optional): 69 | - GND: GND on Nano 70 | - VCC: 5v on Nano 71 | - CLK: Pin D7 on Nano 72 | - DT: Pin D8 on Nano 73 | - SW: Pin 02 on Nano 74 | 75 | Separate power supplies for servo/arduino is the easiest way to deal with servo noise and the arduino. If you are successful in using a capacitor to reduce erratic arduino behaviour, please share that info here. (I tried a 330mF from servo VCC to gnd and it didn't help) 76 | 77 | This project uses the SSD1306ASCII.h library for the display since graphics aren't needed and the libraries are smaller. The code is easily configurable to different pin layouts and servo angle defaults and is documented for modification. The TLP127 was selected since it can handle 300v which some older electronic flashes use for flash sync. The TLP127 lets enough current through for an electronic flash, but would need an additional transistor to let enough current through for a flashbulb. 78 | 79 | An optional rotary encoder can be included which allows faster navigation. 80 | 81 | To Operate: 82 | 83 | After powering up, the shutter will open for focusing/composing. Press the shutter button to close the shutter to ready it to pull the dark slide for exposure. 84 | 85 | Select the shutter speed by pressing the plus or minus buttons (or turning the rotary encoder). TIME is selected by navigating one less than 1/8. 86 | 87 | Press the shutter button to open the shutter for the specified time. If TIME is selected, press the shutter again to close. If self timer is specified, the timer will count down to 0 then open the shutter. If the shutter button is pressed during the countdown, the self timer will be cancelled and the shutter will not open. 88 | 89 | Press the menu button (or the switch on the rotary encoder) to select between the self timer, shutter adjust, and main screen. 90 | 91 | While in the self timer menu, the plus and minus buttons (or turning the rotary encoder) will modify the self timer value. Pressing the Shutter button will open the shutter for focusing/composing and/or close it to get it ready to shoot. 92 | 93 | While in the shutter adjust menu, pressing the shutter button will select between the options. Then, pressing the plus and minus buttons (or turning the rotary encoder) will modify the value of the option next to the asterisk: 94 | 1. Shutter Close is the angle of the servo with the shutter closed 95 | 2. Shutter Open is the angle of the servo with the shutter open 96 | 3. Shutter Relief is the angle the servo backs off after opening or closing the shutter. This is to prevent the servo from vibrating if the shutter is stiff 97 | 4. Button Delay is the value in milliseconds of how fast the buttons repeat if held down. This does not affect the rotary encoder. 98 | 5. Servo Delay is the value in milliseconds it takes to fully open the shutter. This value is subtracted from the shutter speed and used to calculate the flash sync, unless this value is higher than the shutter speed in milliseconds. 99 | 6. Flash Sync X is 0, meaning the flash will go off when the shutter is completely open. Flash Sync M is 20, which will be subtracted from the servo delay to fire the flash 20ms before the shutter is completely open. 100 | 101 | These fine adjustments enable you to tweak the servo settings without having to modify the code and upload it from a computer since it's difficult to perfectly install the servo at the exact angle, and the relief angle can help reduce strain on the servo if the shutter is stiff. 102 | 103 | All settings are saved to eeprom when changed, except for the self timer by design, since self timers usually reset on normal cameras when powered off. 104 | -------------------------------------------------------------------------------- /Schematic.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hackaninstant/Servo-Shutter/ab3577f66c806189194c23d18fd870ad6752a82b/Schematic.jpg -------------------------------------------------------------------------------- /Servo Shutter.mp4: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hackaninstant/Servo-Shutter/ab3577f66c806189194c23d18fd870ad6752a82b/Servo Shutter.mp4 -------------------------------------------------------------------------------- /Servo shutter STLs.zip: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hackaninstant/Servo-Shutter/ab3577f66c806189194c23d18fd870ad6752a82b/Servo shutter STLs.zip -------------------------------------------------------------------------------- /Servo shutter.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hackaninstant/Servo-Shutter/ab3577f66c806189194c23d18fd870ad6752a82b/Servo shutter.jpg -------------------------------------------------------------------------------- /Shutter flash sync.mp4: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hackaninstant/Servo-Shutter/ab3577f66c806189194c23d18fd870ad6752a82b/Shutter flash sync.mp4 -------------------------------------------------------------------------------- /shutter.ino: -------------------------------------------------------------------------------- 1 | #include 2 | #include "SSD1306Ascii.h" 3 | #include "SSD1306AsciiWire.h" 4 | #include 5 | #include 6 | #define I2C_ADDRESS 0x3C 7 | 8 | // Define proper RST_PIN if required. 9 | #define RST_PIN -1 10 | 11 | SSD1306AsciiWire oled; 12 | 13 | // Create a new servo object: 14 | Servo myservo; 15 | 16 | // Output pins: 17 | #define servoPin 9 // for servo 18 | #define FlashSyncPin 10 // for flash sync opto isolator 19 | 20 | // Input pins: 21 | #define PlusButtonPin 3 // Plus button pin 22 | #define MinusButtonPin 4 // Minus button pin 23 | #define ShutterButtonPin 5 // shutter button pin 24 | #define MenuButtonPin 6 // menu button pin 25 | #define rotButtonPin 2 // rotary encoder switch 26 | #define rotCLKPin 7 // rotary encoder clock 27 | #define rotDTPin 8 // rotary encoder DT pin 28 | 29 | boolean PlusButtonState; // "+" button state 30 | boolean MinusButtonState; // "-" button state 31 | boolean ShutterButtonState; // Metering button state 32 | boolean MenuButtonState; // menu button state 33 | 34 | boolean mainscreen = true; // indicates which screen displayed 35 | boolean selftimermenu = false; // indicates self timer menu active 36 | boolean adjustmenu = false; // indicates settings menu active 37 | 38 | // EEPROM for memory recording 39 | #define ShutterSpeedAddr 1 40 | #define ShutterOpenAddr 2 41 | #define ShutterCloseAddr 3 42 | #define ShutterReliefAddr 4 43 | #define ButtonDelayAddr 5 44 | #define ServoDelayAddr 6 45 | #define FlashSyncAddr 7 46 | 47 | // default values if running for the first time 48 | #define defaultShutterOpen 68 // shutter open angle 49 | #define defaultShutterClose 0 // shutter close angle 50 | #define defaultShutterRelief 4 // angle that servo backs off after opening/closing 51 | #define defaultButtonDelay 200 // button repeat delay 52 | #define defaultShutterSpeedIndex 10 // default shutter speed 53 | #define defaultServoDelay 100 // time it takes to completely open shutter 54 | #define defaultFlashSync 0 // 0 = X, 20 = M, amount to subtract from ServoDelay for flash syne 55 | #define MaxShutterIndex 49 // matches number of items in spvalues 56 | 57 | // load values from EEPROM 58 | uint8_t ShutterSpeedIndex = EEPROM.read(ShutterSpeedAddr); 59 | uint8_t ShutterOpen = EEPROM.read(ShutterOpenAddr); 60 | uint8_t ShutterClose = EEPROM.read(ShutterCloseAddr); 61 | uint8_t ShutterRelief = EEPROM.read(ShutterReliefAddr); 62 | uint8_t buttondelay = EEPROM.read(ButtonDelayAddr); 63 | uint8_t ServoDelay = EEPROM.read(ServoDelayAddr); 64 | uint8_t FlashSync = EEPROM.read(FlashSyncAddr); 65 | 66 | int ShutterState = 0; // closed 67 | int selftimer = 0; // self time in seconds 68 | int adjustmenuitem = 1; // selected adjust menu item 69 | float voltage = 0; // for storing voltage of battery 70 | 71 | int rotcounter = 0; // counter for rotary enocoder 72 | int currentStateCLK; // for rotary encoder 73 | int lastStateCLK; // for rotary encoder 74 | unsigned long lastButtonPress = 0; // for rotary encoder 75 | int btnState; // for rotary encoder 76 | boolean rotaryencoder = false; // for rotary encoder 77 | 78 | // Shutter speed values in seconds. 700 = TIME setting. If you add/delete, modify MaxShutterIndex 79 | // shutter speeds faster than the servo speed will not open the shutter completely 80 | float spvalues[] = {.05, .067, .08, .1, .125, .150, .200, .250, .300, .400, .500, .600, .800, 1.000, 1.250, 1.500, 2.000, 2.500, 3.000, 4.000, 5.000, 6.000, 7.000, 8.000, 9, 10, 11, 12, 13, 14, 15.00, 20.00, 25.00, 30.00, 35.00, 40.00, 45.00, 60.00, 90.00, 120.0, 150.0, 180.0, 240.0, 300.0, 360.0, 420.0, 480.0, 540.0, 600.0, 700}; 81 | 82 | // Store settings 83 | void SaveSettings() { 84 | EEPROM.write(ShutterSpeedAddr, ShutterSpeedIndex); 85 | EEPROM.write(ShutterOpenAddr, ShutterOpen); 86 | EEPROM.write(ShutterCloseAddr, ShutterClose); 87 | EEPROM.write(ShutterReliefAddr, ShutterRelief); 88 | EEPROM.write(ButtonDelayAddr, buttondelay); 89 | EEPROM.write(ServoDelayAddr, ServoDelay); 90 | EEPROM.write(FlashSyncAddr, FlashSync); 91 | } 92 | 93 | // read button state 94 | void readButtons() { 95 | PlusButtonState = digitalRead(PlusButtonPin); 96 | MinusButtonState = digitalRead(MinusButtonPin); 97 | ShutterButtonState = digitalRead(ShutterButtonPin); 98 | MenuButtonState = digitalRead(MenuButtonPin); 99 | } 100 | 101 | // figure out what to do with button presses 102 | void menu() { 103 | 104 | // Menu button is pressed, cycle through menus: 105 | if(MenuButtonState == 0) { 106 | if(mainscreen) { 107 | showtimermenu(); 108 | } else if(selftimermenu) { 109 | showadjustmenu(); 110 | } else { 111 | refresh(); 112 | delay(buttondelay); 113 | } 114 | } 115 | 116 | // self timer menu active: 117 | if(selftimermenu) { 118 | if(PlusButtonState == 0) { 119 | selftimer++; // increase self timer by 2 seconds 120 | selftimer++; 121 | } else if (MinusButtonState == 0) { 122 | if (selftimer > 0) { 123 | selftimer--; // decrease self timer by 2 seconds 124 | selftimer--; 125 | } 126 | } 127 | if(PlusButtonState == 0 || MinusButtonState == 0) { 128 | showtimervalue(); // show changes in self timer 129 | } 130 | } 131 | 132 | // on main screen and a plus or minus button is pressed: 133 | if (mainscreen) { 134 | if(PlusButtonState == 0) { 135 | if(ShutterSpeedIndex >= MaxShutterIndex) { 136 | ShutterSpeedIndex = 0; 137 | } else { 138 | ShutterSpeedIndex++; // Increase shutter speed time 139 | } 140 | refreshShutter(); // redisplay shutter speed 141 | SaveSettings(); 142 | } 143 | if(MinusButtonState == 0) { 144 | if(ShutterSpeedIndex == 0) { 145 | ShutterSpeedIndex = MaxShutterIndex; 146 | } else { 147 | ShutterSpeedIndex--; // decrease shutter speed time 148 | } 149 | refreshShutter(); // display shutter speed 150 | SaveSettings(); 151 | } 152 | } 153 | 154 | 155 | float shutterdelay = spvalues[1]; 156 | shutterdelay = shutterdelay * 1000; // time in milliseconds 157 | 158 | // Switch...Case statements to handle menu item adjustments -EHM 5.11.23 159 | // First check for adjustmenu & PlusButtonState states. 160 | // var adjustmenu must exist 161 | // int PlusButtonState 0 or 1 162 | if(adjustmenu && PlusButtonState == 0) { // plus button pressed 163 | // Now Switch check on adjustmenuitem 164 | // int adjustmenuitem 1-6 165 | switch(adjustmenuitem) { 166 | case(1): // Servo angle for open shutter 167 | ShutterOpen++; 168 | clearadjustitem(1); // erase value on screen for open angle 169 | oled.print(ShutterOpen); // display new value for open angle 170 | break; // done 171 | case(2): // Servo angle for close shutter 172 | ShutterClose++; 173 | clearadjustitem(2); 174 | oled.print(ShutterClose); 175 | break; 176 | case(3): // servo relief angle 177 | ShutterRelief++; 178 | clearadjustitem(3); 179 | oled.print(ShutterRelief); 180 | break; 181 | case(4): // button delay in milliseconds 182 | buttondelay = buttondelay + 10; 183 | clearadjustitem(4); 184 | oled.print(buttondelay); 185 | break; 186 | case(5): // servo delay (time it takes to fully open shutter) 187 | ServoDelay++; 188 | clearadjustitem(5); 189 | oled.print(ServoDelay); 190 | break; 191 | 192 | case(6): // flash sync X or M 193 | clearadjustitem(6); 194 | if (FlashSync == 0) { 195 | FlashSync = 20; 196 | oled.print(F("M")); 197 | } else { 198 | FlashSync = 0; 199 | oled.print(F("X")); 200 | break; 201 | } 202 | } 203 | } else if(adjustmenu && MinusButtonState == 0) { // minus button pressed 204 | // Now Switch check on adjustmenuitem 205 | // int adjustmenuitem 1-6 206 | switch(adjustmenuitem) { 207 | case(1): 208 | ShutterOpen--; 209 | clearadjustitem(1); 210 | oled.print(ShutterOpen); 211 | break; 212 | case(2): 213 | ShutterClose--; 214 | clearadjustitem(2); 215 | oled.print(ShutterClose); 216 | break; 217 | case(3): 218 | ShutterRelief--; 219 | clearadjustitem(3); 220 | oled.print(ShutterRelief); 221 | break; 222 | case(4): 223 | buttondelay = buttondelay - 10; 224 | clearadjustitem(4); 225 | oled.print(buttondelay); 226 | break; 227 | case(5): 228 | if(ServoDelay > 0) { 229 | ServoDelay--; 230 | clearadjustitem(5); 231 | oled.print(ServoDelay); 232 | break; 233 | } 234 | 235 | case(6): 236 | clearadjustitem(6); 237 | if (FlashSync == 0) { 238 | FlashSync = 20; 239 | oled.print(F("M")); 240 | } else { 241 | FlashSync = 0; 242 | oled.print(F("X")); 243 | break; 244 | } 245 | } 246 | } 247 | } 248 | // clear and get ready to display adjust value 249 | void clearadjustitem(int adjust) { // erase adjust parameter on screen 250 | oled.setCursor(94, adjust + 1); 251 | oled.print(F(" ")); // display spaces 252 | oled.setCursor(94, adjust + 1); // reset the cursor to print the value 253 | SaveSettings(); // save settings 254 | if(!rotaryencoder){ // if the buttons were used 255 | delay(buttondelay); // wait for button delay time for repeat rate 256 | } 257 | rotaryencoder = false; // reset flag 258 | } 259 | 260 | // display self timer menu 261 | void showtimermenu() { 262 | mainscreen = false; 263 | selftimermenu = true; 264 | adjustmenu = false; 265 | oled.clear(); 266 | printdivider(1); 267 | oled.setCursor(10, 0); 268 | oled.print(F("Self Timer:")); 269 | showtimervalue(); 270 | } 271 | 272 | void showtimervalue() { // show self timer value 273 | oled.set2X(); 274 | oled.setCursor(25, 3); 275 | oled.print(F(" ")); // clear line 276 | oled.setCursor(25, 3); 277 | if(selftimer == 0) { // self timer not active 278 | oled.print(F("OFF")); 279 | } else { 280 | oled.print(selftimer); // show self timer value 281 | oled.print(F(" sec")); // in seconds 282 | } 283 | if(!rotaryencoder){ 284 | delay(buttondelay); // button repeat rate 285 | } 286 | rotaryencoder = false; 287 | } 288 | // display shutter adjust menu 289 | void showadjustmenu() { // settings menu 290 | mainscreen = false; 291 | selftimermenu = false; 292 | adjustmenu = true; 293 | oled.clear(); 294 | printdivider(1); 295 | oled.setCursor(10, 0); 296 | oled.print(F("Shutter Adjust:")); 297 | oled.set1X(); 298 | oled.setCursor(22, 2); // characters are 6 pixels wide including space 299 | oled.print(F("Open Angle: ")); // display the 5 adjustable items 300 | oled.print(ShutterOpen); 301 | oled.setCursor(16, 3); 302 | oled.print(F("Close Angle: ")); 303 | oled.print(ShutterClose); 304 | oled.setCursor(10, 4); // make the titles justified right 305 | oled.print(F("Relief Angle: ")); 306 | oled.print(ShutterRelief); 307 | oled.setCursor(10, 5); 308 | oled.print(F("Button Delay: ")); 309 | oled.print(buttondelay); 310 | oled.setCursor(16, 6); 311 | oled.print(F("Servo Delay: ")); 312 | oled.print(ServoDelay); 313 | oled.setCursor(22, 7); 314 | oled.print(F("Flash Sync: ")); 315 | if(FlashSync == 0) { 316 | oled.print(F("X")); 317 | } else { 318 | oled.print(F("M")); 319 | } 320 | oled.setCursor(0, adjustmenuitem + 1); // display an asterisk beside the selected item 321 | oled.print(F("*")); 322 | if(!rotaryencoder){ 323 | delay(buttondelay); 324 | } 325 | rotaryencoder = false; 326 | } 327 | 328 | void printdivider(int row) { // prints a divider 329 | oled.set1X(); 330 | oled.setCursor(0, row); 331 | int count = 1; 332 | while (count < 23) { // 22 characters wide 333 | oled.print(F("-")); // choose your divider character... 334 | count++; 335 | } 336 | } 337 | 338 | // Display main screen 339 | void refresh() { 340 | mainscreen = true; 341 | selftimermenu = false; 342 | adjustmenu = false; 343 | 344 | // Start main display 345 | oled.clear(); 346 | oled.set1X(); 347 | oled.setCursor(0, 0); 348 | oled.print(F("Shutter Control |")); 349 | oled.setCursor(105, 0); 350 | oled.print(voltage, 1); 351 | oled.print(F("v")); 352 | printdivider(1); 353 | oled.set1X(); 354 | oled.setCursor(40, 2); 355 | oled.print(F("|")); 356 | oled.setCursor(40, 3); 357 | oled.print(F("|")); 358 | oled.setCursor(0, 2); 359 | oled.print(F("Shutter")); 360 | oled.setCursor(0, 3); 361 | oled.print(F("Speed")); 362 | refreshShutter(); 363 | showshutterstate(0); // shutter is closed and ready 364 | 365 | if(selftimer > 0) { // display self timer value if any 366 | oled.setCursor(40, 4); 367 | oled.print(F("|")); 368 | oled.setCursor(40, 5); 369 | oled.print(F("|")); 370 | oled.setCursor(0, 4); 371 | oled.print(F("Self")); 372 | oled.setCursor(0, 5); 373 | oled.print(F("Timer")); 374 | oled.set2X(); 375 | oled.setCursor(50, 4); 376 | oled.print(selftimer); 377 | oled.print(F(" sec")); 378 | } 379 | delay(buttondelay); 380 | } 381 | 382 | void refreshShutter(){ // display just shutter speed 383 | float T = spvalues[ShutterSpeedIndex]; // get shutter speed from array 384 | uint8_t Tdisplay = 0; // Flag for shutter speed display style (fractional, seconds, minutes) 385 | double Tfr = 0; // value for shutter speed fraction 386 | float Tmin = 0; // shutter speed in minutes, if over 60 seconds 387 | if (T >= 60 && T <= 600) { 388 | Tdisplay = 0; // Exposure is in minutes 389 | Tmin = T / 60; 390 | 391 | } else if (T < 60 && T >= 0.6) { // speed in seconds 392 | Tdisplay = 2; // Exposure in in seconds 393 | 394 | } else if (T < 0.6 && T > .01) { // speed in fractions 395 | Tdisplay = 1; // Display is in fractional form 396 | Tfr = round(1 / T); 397 | } else if ( T = 700) { 398 | Tdisplay = 3; // Exposure is TIME 399 | } 400 | oled.set2X(); 401 | oled.setCursor(50, 2); 402 | oled.print(F(" ")); // clear old shutter speed 403 | oled.setCursor(50, 2); // reset cursor 404 | if (Tdisplay == 0) { // display shutter speed 405 | oled.print(Tmin, 1); // in minutes 406 | oled.print(F("m")); 407 | } 408 | if (Tdisplay == 1) { // or in fractions 409 | if (T > 0) { 410 | oled.print(F("1/")); 411 | oled.print(Tfr, 0); 412 | } 413 | } 414 | if (Tdisplay == 2) { // or in seconds 415 | oled.print(T, 1); 416 | oled.print(F("s")); 417 | } 418 | if (Tdisplay == 3) { // or TIME 419 | oled.print(("TIME")); 420 | } 421 | if(!rotaryencoder){ // if a button is being used, delay 422 | delay(buttondelay); 423 | } 424 | rotaryencoder = false; // clear rotary encoder use flag 425 | } 426 | 427 | // display shutter state on bottom line 428 | void showshutterstate(int expose) { 429 | printdivider(6); 430 | oled.setCursor(0, 7); 431 | oled.print(F("State: ")); 432 | if(ShutterState == 0) { // 0 is shutter closed and ready to shoot 433 | oled.print(F("CLOSED--READY ")); 434 | } else { 435 | oled.print(F("OPEN--")); // if the shutter is open... 436 | if(expose == 1) { 437 | oled.print(F("EXPOSING")); // 1 = shutter open for exposure 438 | } else { 439 | oled.print(F("FOCUS ")); // any other number is shutter is open for focusing 440 | } 441 | } 442 | if(expose == 2) { // 2 is shutter is closed, but self time counting down 443 | oled.setCursor(0, 7); 444 | oled.print(F("State: COUNTING DOWN ")); 445 | } 446 | if(expose == 3) { // 3 is shutter is open for focusing 447 | oled.setCursor(0, 7); 448 | oled.print(F("State: FOCUS ")); 449 | } 450 | } 451 | 452 | boolean useselftimer(int stimer) { // self timer routine, sends back an abort flag if shutter is pressed 453 | boolean abort = false; 454 | if(stimer > 0) { 455 | showshutterstate(2); // display timer is counting down status 456 | oled.set2X(); 457 | while(stimer > 0) { // stimer in seconds 458 | int countdown = 100; // for counting down 1 second 459 | oled.setCursor(0, 4); 460 | oled.print(F(" ")); // clear self timer value row 461 | oled.setCursor(0, 4); 462 | oled.print(stimer); // display self timer value 463 | while(countdown > 0) { 464 | if(stimer > 9) { 465 | oled.print(stimer % 10); // display 10s column, then remainder if over 10 seconds 466 | } else { 467 | oled.print(stimer); 468 | } 469 | countdown = countdown - 10; // reduce counter by 1/10 470 | delay(100); // wait 1/10 second 471 | readButtons(); // read button state 472 | if(ShutterButtonState == 0) { // if the shutter button is pressed 473 | abort = true; // flag abort 474 | countdown = 0; // stop countdown 475 | stimer=0; // stop self timer 476 | } 477 | } 478 | stimer--; // reduce timer by 1 second 479 | } 480 | oled.setCursor(0, 4); 481 | oled.print(F("0000000000")); // last count 482 | } 483 | return(abort); // return the abort flag 484 | } 485 | 486 | void setup() { 487 | pinMode(PlusButtonPin, INPUT_PULLUP); // setup buttons to pins 488 | pinMode(MinusButtonPin, INPUT_PULLUP); 489 | pinMode(ShutterButtonPin, INPUT_PULLUP); 490 | pinMode(MenuButtonPin, INPUT_PULLUP); 491 | pinMode(FlashSyncPin, OUTPUT); // setup flash sync output to opto isolator 492 | pinMode(rotCLKPin, INPUT); // setup rotary encoder 493 | pinMode(rotDTPin, INPUT); 494 | pinMode(rotButtonPin, INPUT_PULLUP); // setup rotary encoder switch 495 | 496 | lastStateCLK = digitalRead(rotCLKPin); // read last state of CLK on rotary encoder 497 | 498 | Wire.begin(); 499 | myservo.attach(servoPin); // setup servo output 500 | oled.begin(&Adafruit128x64, I2C_ADDRESS); // setup oled address 501 | oled.setFont(Adafruit5x7); // setup oled font 502 | myservo.write(ShutterOpen); // open shutter for viewing, focusing 503 | delay(200); // wait 200ms 504 | myservo.write(ShutterOpen - ShutterRelief); // back off to relieve stress on servo 505 | ShutterState = 1; // shutter open 506 | 507 | // load defaults if first time running 508 | if (ShutterSpeedIndex > MaxShutterIndex) { 509 | ShutterSpeedIndex = defaultShutterSpeedIndex; 510 | } 511 | if (ShutterOpen > 200) { 512 | ShutterOpen = defaultShutterOpen; 513 | } 514 | if (ShutterClose > 90) { 515 | ShutterClose = defaultShutterClose; 516 | }if (ShutterRelief > 20) { 517 | ShutterRelief = defaultShutterRelief; 518 | }if (buttondelay > 250) { 519 | buttondelay = defaultButtonDelay; 520 | } 521 | if (ServoDelay > 250) { 522 | ServoDelay = defaultServoDelay; 523 | } 524 | if (FlashSync > 20) { 525 | FlashSync = defaultFlashSync; 526 | } 527 | 528 | // get voltage 529 | const long InternalReferenceVoltage = 1056L; // Adjust this value to your boards specific internal BG voltage x1000 530 | ADMUX = (0 << REFS1) | (1 << REFS0) | (0 << ADLAR) | (1 << MUX3) | (1 << MUX2) | (1 << MUX1) | (0 << MUX0); 531 | delay(100); // Let mux settle a little to get a more stable A/D conversion 532 | ADCSRA |= _BV( ADSC ); 533 | while ( ( (ADCSRA & (1 << ADSC)) != 0 ) ); 534 | voltage = (((InternalReferenceVoltage * 1024L) / ADC) + 5L) / 10L; // calculates for straight line value 535 | voltage = voltage/100; 536 | 537 | refresh(); // display main screen 538 | } 539 | 540 | void loop() { 541 | 542 | readButtons(); // get button state 543 | 544 | currentStateCLK = digitalRead(rotCLKPin); // read current state of rotary encoder 545 | if(lastStateCLK == LOW && currentStateCLK == HIGH){ 546 | rotaryencoder = true; 547 | if(digitalRead(rotDTPin) == HIGH ){ 548 | MinusButtonState = 0; // translate it to button state 549 | } else { 550 | PlusButtonState = 0; 551 | } 552 | } 553 | lastStateCLK = currentStateCLK; // wait until next event from encoder 554 | 555 | btnState = digitalRead(rotButtonPin); // read rotary encoder button 556 | if (btnState == LOW){ 557 | if (millis() - lastButtonPress > 50){ 558 | MenuButtonState = 0; // translate encoder switcht to menu push 559 | } 560 | lastButtonPress = millis(); 561 | } 562 | 563 | menu(); // do stuff with button press 564 | 565 | // shutter button pressed during self timer menu and the shutter is closed 566 | if(!ShutterButtonState && selftimermenu && ShutterState == 0) { 567 | myservo.write(ShutterOpen); // open the shutter for focus, viewing 568 | while (!ShutterButtonState) { // as long as the shutter button is pressed... 569 | delay(100); // wait another 100 ms 570 | readButtons(); // then read the buttons again 571 | } 572 | delay(200); // wait until shutter opens 573 | myservo.write(ShutterOpen - ShutterRelief); 574 | ShutterState = 1; 575 | showshutterstate(3); // open shutter for focus 576 | } 577 | 578 | // shutter button pressed during adjust menu 579 | if(!ShutterButtonState && adjustmenu) { 580 | while (!ShutterButtonState) { // wait until Shutter button is released 581 | delay(100); 582 | readButtons(); // try reading the buttons again 583 | } 584 | oled.setCursor(0, adjustmenuitem + 1); 585 | oled.print(F(" ")); // clear adjust option item 586 | adjustmenuitem++; // go to next adjust menu item 587 | if(adjustmenuitem > 6) { // cycle back to first item 588 | adjustmenuitem = 1; 589 | } 590 | oled.setCursor(0, adjustmenuitem + 1); 591 | oled.print(F("*")); // Item selection indicator 592 | } 593 | 594 | // Main routine: shutter button pressed 595 | if(!ShutterButtonState) { 596 | boolean abort = false; // setup self timer abort variable 597 | if(ShutterState == 1) { // If the shutter is open, close it 598 | myservo.write(ShutterClose); 599 | delay(200); // wait .2 sec 600 | myservo.write(ShutterClose + ShutterRelief); // relieve servo stress 601 | ShutterState = 0; // 0 = closed 602 | showshutterstate(ShutterState); // indicate on status line on oLED 603 | } else { // If the shutter is closed 604 | abort = useselftimer(selftimer); // go to self timer routine and count down 605 | if (!abort) { // if self timer hasn't been aborted 606 | float shutterdelay = spvalues[ShutterSpeedIndex]; // get shutter speed in seconds 607 | int shutterseq = 1; // normal flash sync shutter operation (default) 608 | if (shutterdelay > 600){ // if shutter speed is greater than max (10 min) 609 | shutterseq = 4; // TIME, no flash 610 | } else if (shutterdelay > 1 && shutterdelay < 700) { // if shutter speed is slower than 1 second 611 | shutterseq = 2; // shutter sequence with servo relief 612 | } 613 | shutterdelay = shutterdelay * 1000; // convert time in milliseconds 614 | if (shutterdelay > ServoDelay){ // if shutter speed is slower than servo delay 615 | shutterdelay = shutterdelay - ServoDelay; // subtract flashsync time from total 616 | } else { 617 | shutterseq = 3; // shutter speed faster than servo delay: fire the flash after shutter delay 618 | } 619 | ShutterState = 1; // show shutter open 620 | showshutterstate(ShutterState); 621 | // these case statements make shutter operations redundant between cases. Since shutter timing is critical, each shutter sequence is done in its own case, to avoid conditionals and possible delays during shutter operation 622 | switch(shutterseq){ // choose shutter operation based on shutterseq 623 | case(1): // normal shutter operation 624 | myservo.write(ShutterOpen); // open shutter 625 | delay(ServoDelay - FlashSync); // wait until flash sync delay 626 | digitalWrite(FlashSyncPin, HIGH); // activate opto isolator for flash 627 | delay(FlashSync); // delay the rest of the time to add up to ServoDelay 628 | delay(shutterdelay); // keep shutter open for rest of time 629 | digitalWrite(FlashSyncPin, LOW); // turn off flash sync 630 | break; // done 631 | case(2): // shutter longer than 1 second 632 | myservo.write(ShutterOpen); // open shutter 633 | delay(ServoDelay - FlashSync); // wait until blades are open 634 | digitalWrite(FlashSyncPin, HIGH); // activate opto isolator for flash 635 | delay(FlashSync); // wait until the rest of the flash sync time 636 | delay(50); // and an additional 50ms for good measure for flash 637 | digitalWrite(FlashSyncPin, LOW); // turn off flash 638 | myservo.write(ShutterOpen - ShutterRelief); // relieve stress on servo 639 | delay(shutterdelay - 50); // keep shutter open the rest of the duration 640 | break; // done 641 | case(3): // shutter speed faster than servo delay (for high shutter speeds where blades don't completely open) 642 | myservo.write(ShutterOpen); // open shutter 643 | delay(shutterdelay); // wait for duration of shutter time 644 | digitalWrite(FlashSyncPin, HIGH); // fire flash 645 | break; // done 646 | case(4): // TIME 647 | myservo.write(ShutterOpen); // open shutter 648 | delay(200); // wait 200 ms 649 | myservo.write(ShutterOpen - ShutterRelief); // relieve stress on servo 650 | delay(100); // wait 100ms 651 | readButtons(); // clear button state 652 | while(ShutterButtonState) { // as long as shutter button isn't pressed, keep open 653 | readButtons(); // wait here until shutter button pressed. 654 | } 655 | break; // done 656 | } // finished with shutter sequence 657 | myservo.write(ShutterClose); // close shutter 658 | digitalWrite(FlashSyncPin, LOW); // turn off flash 659 | delay(200); // wait 200ms 660 | myservo.write(ShutterClose + ShutterRelief); // relieve stress on shutter 661 | ShutterState=0; // shutter closed 662 | showshutterstate(ShutterState); // show shutter on status line 663 | } 664 | // wait until shutter button is released 665 | while (!ShutterButtonState) { // as long as the shutter button is pressed... 666 | delay(100); // wait another 100 ms 667 | readButtons(); // then read the buttons again 668 | } 669 | 670 | refresh(); // refresh the display 671 | } 672 | } 673 | } 674 | -------------------------------------------------------------------------------- /shuttergerber.zip: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hackaninstant/Servo-Shutter/ab3577f66c806189194c23d18fd870ad6752a82b/shuttergerber.zip --------------------------------------------------------------------------------