Chacha’s final Diamond heart

For my final project, I made a light that beats with my pulse. I call it diamond heart.

Link to my instructable: https://www.instructables.com/Diamond-Heart/

Material list:

• 3d printing filament PLA red transparent
• A white T-shirt
• pulse sensor
• a long USB-c cord
• Arduino nano board

Diagram sketch:

On NANO:

Worked:

Coding:

// Pin Definitions

const int heartbeatPin = 2;  // Pin connected to heartbeat sensor signal

const int ledPin = 3;        // Pin connected to LED

void setup() {

  pinMode(heartbeatPin, INPUT);  // Set heartbeat pin as input

  pinMode(ledPin, OUTPUT);       // Set LED pin as output

}

void loop() {

  // Read the heartbeat sensor’s signal

  int heartbeat = digitalRead(heartbeatPin);

  if (heartbeat == HIGH) { // Heartbeat detected

    digitalWrite(ledPin, HIGH);  // Turn on the LED

  } else {

    digitalWrite(ledPin, LOW);   // Turn off the LED

  }

}

Verified & uploaded:

How it works on my pulse:

Put battery+Nano board in the diamond heart case:

3d printed them:

Final :

If I would do it again, I will:

1. Set up 3d printing slicing data differently so the surface can be probably smoother/or thinking about more materials.
2. Think about the target group and audience/ using scenarios.
3. Probably have more LED so it can be brighter.