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Physical mute button for Zoom using an ATTiny85/Digispark and the Micronucleus bootloader to allow programming with the Arduino IDE - PC Version
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| /* | |
| Thanks to Elliotmade for the inspiration on this project | |
| https://elliotmade.com/2020/04/23/physical-mute-button-for-zoom-meetings/ | |
| Refactored by HaxNobody to extend functionalty: | |
| https://gist.github.com/HaxNobody/7bde369d7a41348b8b91c1a4f358ea4a#file-zoommutebutton-ino | |
| This program will send USB HID keyboard presses to bring the Zoom window into | |
| the foreground and activate microphone and video functions. | |
| * A momentary press on button 1 will toggle mute on or off. | |
| * Press and hold button 1 to activate PTT (Push-to-Talk) functionality. | |
| * Press and hold button 1 to close zoom | |
| */ | |
| #include <DigiKeyboard.h> // Library for sending keystrokes as an HID device over USB | |
| #include <OneButton.h> // Library for button input functions | |
| #define LedBreatheSpeed 12 // Speed of LED breathing animation in BPM | |
| #define LedMinBrightness 5 // Minimum brightness value | |
| #define MOD_CMD_LEFT 0x00000008 | |
| #define MOD_LEFTSHIFT 0xe1 | |
| OneButton button1( | |
| 0, // Pin Number | |
| true, // Input is active LOW | |
| true // Enable internal pull-up resistor | |
| ); | |
| OneButton button2( | |
| 2, // Pin Number | |
| true, // Input is active LOW | |
| true // Enable internal pull-up resistor | |
| ); | |
| void setup() { | |
| button1.attachClick(button1click); // Set up button 1 for Zoom mute toggle function | |
| button1.attachLongPressStart(button1longPressStart); // Set up button 1 for Zoom temporary unmute function | |
| button1.attachLongPressStop(button1longPressStop); // Set up button 1 for Zoom temporary unmute release function | |
| button1.setPressTicks(1000); // Reduce long-press delay for button 1 to make temporary unmute more responsive | |
| DigiKeyboard.delay(50); // Delay before entering loop | |
| pinMode(1, OUTPUT); // Initialize LED pin | |
| } | |
| void loop() { | |
| DigiKeyboard.update(); // Maintain USB communication | |
| button1.tick(); // Check status of buttons in a continuous loop | |
| button2.tick(); | |
| } | |
| // This function will be called when button 1 is pressed for more than 50ms and less than 300ms. | |
| void button1click() { | |
| DigiKeyboard.sendKeyStroke(0); // Clear any current key presses | |
| DigiKeyboard.sendKeyStroke(0, MOD_SHIFT_LEFT | MOD_CONTROL_LEFT | MOD_ALT_LEFT); // Bring Zoom into foreground | |
| DigiKeyboard.delay(50); // Give Zoom a chance to get into the foreground | |
| DigiKeyboard.sendKeyStroke(KEY_A, MOD_ALT_LEFT); // Toggle mute on or off in Zoom | |
| } | |
| // This function will be called when button 1 is pressed and held down for more than 300ms. | |
| void button1longPressStart() { | |
| DigiKeyboard.sendKeyStroke(0); // Clear any current key presses | |
| DigiKeyboard.sendKeyStroke(0, MOD_SHIFT_LEFT | MOD_CONTROL_LEFT | MOD_ALT_LEFT); | |
| DigiKeyboard.delay(50); | |
| DigiKeyboard.sendKeyStroke(KEY_Q, MOD_ALT_LEFT); | |
| DigiKeyboard.delay(50); | |
| DigiKeyboard.sendKeyStroke(KEY_ENTER); | |
| } | |
| // This function will be called when button 1 is released after being held down. | |
| void button1longPressStop() { | |
| DigiKeyboard.delay(300); // Delay to prevent cutting off the speaker's last word | |
| DigiKeyboard.sendKeyPress(0); // Release space key to re-mute Zoom after temporary unmute | |
| } |
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