Atta Rehman
PAKISTAN • + Follow
Components
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PEC11H-4015F-S0016Bourns Inc.
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x 1 | |
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Pro Micro 5V/16MHz |
x 1 |
Tools, APP Software Used etc.
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KiCad 9.0 |
Description
PC volume knob
A physical knob to take control of volume on a PC.
Code
Code
C/C++
#include <HID-Project.h>
// EC11 pins
const int pinA = 2;
const int pinB = 3;
const int pinBtn = 4;
int lastStateA;
void setup() {
pinMode(pinA, INPUT_PULLUP);
pinMode(pinB, INPUT_PULLUP);
pinMode(pinBtn, INPUT_PULLUP);
lastStateA = digitalRead(pinA);
Consumer.begin(); // HID media control
}
void loop() {
// ---- ROTARY ----
int currentA = digitalRead(pinA);
if (currentA != lastStateA) {
if (digitalRead(pinB) != currentA) {
Consumer.write(MEDIA_VOLUME_UP);
} else {
Consumer.write(MEDIA_VOLUME_DOWN);
}
delay(2); // simple debounce
}
lastStateA = currentA;
// ---- BUTTON (MUTE) ----
if (digitalRead(pinBtn) == LOW) {
delay(20); // debounce
if (digitalRead(pinBtn) == LOW) {
Consumer.write(MEDIA_VOLUME_MUTE);
while (digitalRead(pinBtn) == LOW); // wait release
}
}
}
Apr 22,2026
26 views
PC volume knob
A physical knob to control PC volume
26
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Published: Apr 22,2026
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Raspberry Pi 5 7 Inch Touch Screen IPS 1024x600 HD LCD HDMI-compatible Display for RPI 4B 3B+ OPI 5 AIDA64 PC Secondary Screen（Without Speaker）
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