EyalSch
Published © CC BY-NC

Bluetooth Control Hat

The ultimate upgrade to your hat.

IntermediateShowcase (no instructions)3 hours12,998
Bluetooth Control Hat

Things used in this project

Hardware components

Arduino Pro Mini 328 - 3.3V/8MHz
SparkFun Arduino Pro Mini 328 - 3.3V/8MHz
×1
SparkFun FTDI Basic Breakout - 3.3V
SparkFun FTDI Basic Breakout - 3.3V
×1
HC-05 Bluetooth Module
HC-05 Bluetooth Module
×1
Addressable LED Strip ws2812b
I used 16 LEDs with 30 leds/m
×1
a HAT
×1
3.7 V LiPo Battery
×1

Software apps and online services

Arduino IDE
Arduino IDE
MIT App Inventor
MIT App Inventor

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)

Story

Read more

Schematics

Schematics

Code

Arduino Code

Arduino
// Pro Mini 3.3V
// Blutooth pin 3 - RX, pin 4 - TX
// LED Strip 16 leds - pin 6 - DATA
// Lipo 3.7V

#include <Adafruit_NeoPixel.h>
#include <SoftwareSerial.h>

#define  SERIAL_PORT_SPEED  115200
#define  BT_PORT_SPEED  9600

#define PINLED 6
#define NumLED 16

Adafruit_NeoPixel strip = Adafruit_NeoPixel(NumLED, PINLED, NEO_GRB + NEO_KHZ800);

int Mode = 0;
int ParameterR = 0;
int ParameterG = 0;
int ParameterB = 170;
int ParameterSpeed = 60;
int ParameterBrightness = 130;
String MsgBT = "";
String strTemp;
char c;
SoftwareSerial BT(3, 4);// RX | TX


void setup() {
  strip.begin();
  strip.setBrightness(ParameterBrightness);
  strip.show(); // Initialize all pixels to 'off'
  BT.begin(BT_PORT_SPEED);
  Serial.begin(SERIAL_PORT_SPEED);
  MsgBT.reserve(150);
}

void loop() {

  if (BT.available())
  {
    MsgBT = BT.readString();

    Serial.print("bytes read: ");
    Serial.println(MsgBT.length());
    Serial.println(MsgBT);

    if (MsgBT == "999") { // Turn Off
      TurnOff();
      Mode = 1;
    } else
    {
      strTemp = (MsgBT.substring(0, MsgBT.indexOf(",")));
      ParameterR = strTemp.toInt();
      MsgBT = MsgBT.substring(MsgBT.indexOf(",") + 1);

      strTemp = (MsgBT.substring(0, MsgBT.indexOf(",")));
      ParameterG = strTemp.toInt();
      MsgBT = MsgBT.substring(MsgBT.indexOf(",") + 1);

      strTemp = (MsgBT.substring(0, MsgBT.indexOf(",")));
      ParameterB = strTemp.toInt();
      MsgBT = MsgBT.substring(MsgBT.indexOf(",") + 1);

      strTemp = (MsgBT.substring(0, MsgBT.indexOf(",")));
      ParameterSpeed = strTemp.toInt();
      MsgBT = MsgBT.substring(MsgBT.indexOf(",") + 1);

      strTemp = (MsgBT.substring(0, MsgBT.indexOf("#")));
      ParameterBrightness = strTemp.toInt();

      Serial.print(ParameterR);
      Serial.print(",");
      Serial.print(ParameterG);
      Serial.print(",");
      Serial.print(ParameterB);
      Serial.print(",");
      Serial.print(ParameterSpeed);
      Serial.print(",");
      Serial.print(ParameterBrightness);
      Serial.println();

      Mode = 0;
      MsgBT = "";
    }
  }

  switch (Mode) {
    case 0:
      strip.setBrightness(ParameterBrightness);
      strip.show();
      if (ParameterSpeed == 400) {
        for (uint16_t i = 0; i < strip.numPixels(); i++)
          strip.setPixelColor(i, strip.Color(ParameterR, ParameterG, ParameterB));
        strip.show();
        Mode = 1;
      }
      else {
        colorWipe(strip.Color(ParameterR, ParameterG, ParameterB), ParameterSpeed);
        if (BT.available()) break;
        colorWipe(strip.Color(0, 0, 0), ParameterSpeed);

      }
      break;
    case 1:
      Serial.println("Mode 1");
      break;
  }
}


// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
  for (uint16_t i = 0; i < strip.numPixels(); i++) {
    strip.setPixelColor(i, c);
    strip.show();
    if (BT.available()) return;
    delay(wait);
  }
}

void TurnOff() {
  for (uint16_t i = 0; i < strip.numPixels(); i++)
    strip.setPixelColor(i, strip.Color(0, 0, 0));
  strip.show();
}

Android App

Java
The Android App was built using MIT app inventor.
No preview (download only).

Credits

EyalSch

EyalSch

1 project • 10 followers
Like electronic and programming

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