Tools, APP Software Used etc.
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Autodesk Fusion 360Autodesk
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KiCADKicad
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Description
Wireless Bike Media Controller
I wanted an easy way to control my music while biking without having to look at my phone. This project solves that issue. This wireless device features a rotary encoder for volume and a mute button, plus three keys for previous track, play/pause, and next track. It also has a LiPo battery so no cables are needed. Just attach the bottom plate to the handlebar mount which fits your handlebars and you won't have to worry about looking down to switch songs!
Controls
- Left Button: Previous Track
- Center Button: Play/Pause
- Right Button: Next Track
- Knob CW: Volume Down
- Knob CCW: Volume Up
- Knob Button: Mute/Unmute
Hardware
- Seeed Studio XIAO ESP32C3
- 3x MX Switches
- 5x 10k Ohm Resistors
- Rotary Encoder
- 3.7v LiPo Battery
- 4x M3 x 6mm Screws
- 4x M3 heat set inserts
Code
Arduino Code for Seeed XIAO ESP32C3
C/C++
#include <BleKeyboard.h>
#include <RotaryEncoder.h>
const int button1Pin = 5;
const int button2Pin = 6;
const int button3Pin = 7;
const int encoderAPin = 4;
const int encoderBPin = 3;
const int encoderSwitchPin = 2;
bool button1Pressed = false;
bool button2Pressed = false;
bool button3Pressed = false;
bool encoderSwitchPressed = false;
BleKeyboard bleKeyboard;
RotaryEncoder encoder(encoderAPin, encoderBPin, RotaryEncoder::LatchMode::TWO03);
void setup() {
Serial.begin(9600);
pinMode(button1Pin, INPUT_PULLUP);
pinMode(button2Pin, INPUT_PULLUP);
pinMode(button3Pin, INPUT_PULLUP);
pinMode(encoderAPin, INPUT_PULLUP);
pinMode(encoderBPin, INPUT_PULLUP);
pinMode(encoderSwitchPin, INPUT_PULLUP);
bleKeyboard.begin();
}
void loop() {
// Check button inputs
if (digitalRead(button1Pin) == LOW && !button1Pressed) {
button1Pressed = true;
Serial.write("Prev\n");
bleKeyboard.press(KEY_MEDIA_PREVIOUS_TRACK);
} else if (digitalRead(button1Pin) == HIGH && button1Pressed) {
button1Pressed = false;
bleKeyboard.release(KEY_MEDIA_PREVIOUS_TRACK);
}
if (digitalRead(button2Pin) == LOW && !button2Pressed) {
button2Pressed = true;
Serial.write("Play/Pause\n");
bleKeyboard.press(KEY_MEDIA_PLAY_PAUSE);
} else if (digitalRead(button2Pin) == HIGH && button2Pressed) {
button2Pressed = false;
bleKeyboard.release(KEY_MEDIA_PLAY_PAUSE);
}
if (digitalRead(button3Pin) == LOW && !button3Pressed) {
button3Pressed = true;
Serial.write("Next\n");
bleKeyboard.press(KEY_MEDIA_NEXT_TRACK);
} else if (digitalRead(button3Pin) == HIGH && button3Pressed) {
button3Pressed = false;
bleKeyboard.release(KEY_MEDIA_NEXT_TRACK);
}
if (digitalRead(encoderSwitchPin) == LOW && !encoderSwitchPressed) {
encoderSwitchPressed = true;
Serial.write("Mute\n");
bleKeyboard.press(KEY_MEDIA_MUTE);
} else if (digitalRead(encoderSwitchPin) == HIGH && encoderSwitchPressed) {
encoderSwitchPressed = false;
bleKeyboard.release(KEY_MEDIA_MUTE);
}
// Check encoder rotation
static int pos = 0;
encoder.tick();
int newPos = encoder.getPosition();
if (pos != newPos) {
int dir = (-1) * (int)(encoder.getDirection());
if (dir > 0) {
bleKeyboard.press(KEY_MEDIA_VOLUME_UP);
delay(200); // Increase this delay for larger moves
bleKeyboard.release(KEY_MEDIA_VOLUME_UP);
Serial.write("Volume Up\n");
} else {
bleKeyboard.press(KEY_MEDIA_VOLUME_DOWN);
delay(200); // Increase this delay for larger moves
bleKeyboard.release(KEY_MEDIA_VOLUME_DOWN);
Serial.write("Volume Down\n");
}
pos = newPos;
}
}
GitHub Repository
https://github.com/Gabgra11/BikeMediaController
Schematic and Layout
Schematic: OPTIONAL: Connect Lipo Battery to Battery +/- on the back of the Seeed Studio XIAO with a switch to interrupt power.
BMC Schematic.png
CAD-Custom parts and enclosures
Knurled Encoder Knob
Knurled Encoder Knob.stl
Case Bottom
Bottom.stl
Case Top
Top.stl
Dec 14,2023
661 views
Wireless Bike Media Controller
Control your music and keep your eyes on the road with this handlebar mounted bluetooth media controller.
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Published: Dec 14,2023
PCBWay Donate 10% cost To Author
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Under the
Attribution-NonCommercial (CC BY-NC)
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