IDeATe

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The idea is to simulate snowfall with a dc fan and generate ambient display using flying foam beads.
Potentially it would be trigger by a snowfall event sent by the weather API.
The power may work with wind speed.
Now the particle function is set to be taking input as the interval of triggering the fan to test the function and its effect.

int fanPin = D2;

void setup() {

    pinMode( fanPin, OUTPUT );
    digitalWrite( fanPin, LOW );
    
    Particle.function("snow",snow);
    
}

void loop() {
    
}

void blowFan(int interval){
    for(int i = 0; i < 3; i++ ){
        digitalWrite( fanPin, HIGH );
        delay (interval);
        digitalWrite( fanPin, LOW );
        delay (interval);
    }
}

int snow(String command){
    int s = command.toInt();
    blowFan(s);
    return 1;
}

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Process

I started the circuit with transmitter and diode with a 5V/1mA DC brushless fan. In the testing I neglected yellow and blue wires to prototype on the interaction. The test started with plastic balls decomposition of a chunk of foam. The rough cut container is a plastic cup and mesh wires.

I also tried to test with other materials like post-it, facial tissue. But both of them failed. Maybe it should be tested with the fan that got 1 A current. But somehow the effect triggered by the 1 mA little fan is actually quite subtle and nice.

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