A shortcut keyboard for designers

sketch

#define KEY_LEFT_CTRL 0x01
#define KEY_LEFT_SHIFT 0x02
#define KEY_LEFT_ALT 0x04uint8_t buf[8] = {
 0 }; /* Keyboard report buffer */#define PIN_COPY 7
#define PIN_CUT 5
#define PIN_PASTE 6
#define PIN_EYEDROP 4
#define PIN_LOCK 3
#define PIN_SAVE 2int state = 1;void setup()
{
 Serial.begin(9600);pinMode(PIN_COPY, INPUT);
 pinMode(PIN_CUT, INPUT);
 pinMode(PIN_PASTE, INPUT);
 pinMode(PIN_EYEDROP, INPUT);
 pinMode(PIN_LOCK, INPUT);
 pinMode(PIN_SAVE, INPUT); // Enable internal pull-ups
 digitalWrite(PIN_COPY, 1);
 digitalWrite(PIN_CUT, 1);
 digitalWrite(PIN_PASTE, 1);
 digitalWrite(PIN_EYEDROP, 1);
 digitalWrite(PIN_SAVE, 1);
 digitalWrite(PIN_LOCK, 1);delay(200);
}void loop()
{
 state = digitalRead(PIN_CUT);
 if (state != 1) {
 buf[0] = KEY_LEFT_CTRL; // Ctrl
 buf[2] = 27; // Letter X
 // buf[2] = 123; // Cut key: Less portable
 Serial.write(buf, 8); // Ssend keypress
 releaseKey();
 }state = digitalRead(PIN_COPY);
 if (state != 1) {
 buf[0] = KEY_LEFT_CTRL; // Ctrl
 buf[2] = 6; // Letter C
 // buf[2] = 124; // Copy key: Less portable
 Serial.write(buf, 8); // Send keypress
 releaseKey();
 }state = digitalRead(PIN_PASTE);
 if (state != 1) {
 buf[0] = KEY_LEFT_CTRL; // Ctrl
 buf[2] = 25; // Letter V
 // buf[2] = 125; // Paste key: Less portable
 Serial.write(buf, 8); // Send keypress
 releaseKey();
 }state = digitalRead(PIN_EYEDROP);
 if (state != 1) {
 buf[0] = 0; // Empty Buffer[0]
 buf[2] = 0x0C; // Letter I
 Serial.write(buf, 8); // Send keypress
 releaseKey();
 }state = digitalRead(PIN_SAVE);
 if (state != 1) {
 buf[0] = KEY_LEFT_CTRL + KEY_LEFT_SHIFT + KEY_LEFT_ALT;
 buf[2] = 0x16; //S Key
 Serial.write(buf, 8); // Send keypress
 releaseKey();
 }state = digitalRead(PIN_LOCK);
 if (state != 1) {
 buf[0] = KEY_LEFT_CTRL;
 buf[2] = 0x1F; // 2 Key
 Serial.write(buf, 8); // Send keypress
 releaseKey();
 }
}void releaseKey()
{
 buf[0] = 0;
 buf[2] = 0;
 Serial.write(buf, 8); // Release key
 delay(500);
}