Circuits

03 August 2017 — #arduino, #processing

Buy an Arduino Starter Kit. Get drunk and die for a day. Wake up to learn how to know. Connect devices with wires. Write the code to run on it. Drink more coffee, wine or beer. Start hacking, share you ideas.

arduino

Don’t like the games. But love the code. Don’t know the electronics. But like to learn new things. Remember the good old times with Gameboy in your pocket. The ugly gray plastic computer with liquid crystal display and 999 games all the same. And now, a half life later opening the designe precise box with a bit of resistors, wires and not enough big breadboard.

// pin connection & serial codes
const int LEFT    = 2;
const int RED     = 3;
const int YELLOW  = 4;
const int GREEN   = 5;
const int BUZZ    = 8;
const int TONE    = 440;
const int BLUE    = 11;
const int RIGHT   = 12;

void setup() {
  Serial.begin(9600);
  pinMode(LEFT,   INPUT);
  pinMode(RIGHT,  INPUT);
  pinMode(RED,    OUTPUT);
  pinMode(YELLOW, OUTPUT);
  pinMode(GREEN,  OUTPUT);
  pinMode(BLUE,   OUTPUT);
  pinMode(BUZZ,   OUTPUT);
}

// hardware status
boolean left    = false;
boolean right   = false;
boolean red     = false;
boolean yellow  = false;
boolean green   = false;
boolean blue    = false;
boolean buzz    = false;
// time event
unsigned long check = 0;

void loop() {

  // incoming command
  if (Serial.available() > 0) {
    check = millis();
    int val = Serial.read();
    switch (val) {
      case RED:
        red = true;
        digitalWrite(RED, HIGH);
        break;
      case YELLOW:
        yellow = true;
        digitalWrite(YELLOW, HIGH);
        break;
      case GREEN:
        green = true;
        digitalWrite(GREEN, HIGH);
        break;
      case BLUE:
        blue = true;
        digitalWrite(BLUE, HIGH);
        break;
      case BUZZ:
        buzz = true;
        tone(BUZZ, TONE);
      default:
        break;
    }
  }

  // hardware indicators reset
  if (millis() - check > 666) {
    if (red) {
      red = false;
      digitalWrite(RED, LOW);
    }
    if (yellow) {
      yellow = false;
      digitalWrite(YELLOW, LOW);
    }
    if (green) {
      green = false;
      digitalWrite(GREEN, LOW);
    }
    if (blue) {
      blue = false;
      digitalWrite(BLUE, LOW);
    }
    if (buzz) {
      buzz = false;
      noTone(BUZZ);
    }
  }

  // move one step to left
  if (digitalRead(LEFT) == HIGH) {
    if (!left) {
      left = true;
      Serial.write(LEFT);
    }
  } else {
    left = false;
  }

  // move one step to right
  if (digitalRead(RIGHT) == HIGH) {
    if (!right) {
      right = true;
      Serial.write(RIGHT);
    }
  } else {
    right = false;
  }

}

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Astro-Grázl

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