• 機器人專題(114學年)

認識開發板(以Ameba為例)

• 講義

• 待完成

  • 閃燈

    【主題】讓藍燈閃爍

    從Arduino內建的範例中，開啟程式碼，如下圖。

    

    按下上傳按鈕。

    

    按下紅燈旁的按鈕讓程式執行。

  • 外接LED閃燈

    接線圖如下：

    

    程式碼如下：

    int led = 7;
    
    void setup() {
      pinMode(led, OUTPUT);
    }
    
    void loop() {
      digitalWrite(led, HIGH);
      delay(1000);
      digitalWrite(led, LOW);
      delay(1000);
    }

  • 外接按鈕與LED

    接線圖，如下。

    

    程式碼，如下。

    #define LED_PIN 8
    #define BUTTON_PIN 7
    
    void setup() {
      pinMode(LED_PIN, OUTPUT);
      pinMode(BUTTON_PIN, INPUT);
    }
    
    void loop() {
      if (digitalRead(BUTTON_PIN) == HIGH) {
        digitalWrite(LED_PIN, HIGH);
      }
      else {
        digitalWrite(LED_PIN, LOW);
      }
    }

  • 超音波測距

    接線圖，如下。

    

    程式碼，如下。

    /*
     * Demonstrates use of HC-SR04 ultrasonic range module
     *
     * This sketch sends a 10us pulse HIGH at trigger pin of HC-SR04.
     * HC-SR04 return a pulse HIGH at echo pin which corresponds the distance.
     *     Time = Width of Echo pulse, in us (micro second)
     *     Distance in centimeters = Time / 58
     *
     * HC-SR04 works at 5V domain.
     * It means the echo pin needs level shift from 5V to 3.3V.
     * We can either use a level converter or use resister to divide the level.
     *
     Example guide:
     https://ameba-doc-arduino-sdk.readthedocs-hosted.com/en/latest/ameba_pro2/amb82-mini/Example_Guides/GPIO/Measure%20Distance%20HCSR04%20Ultrasonic.html
    */
    
    const int trigger_pin = 12;
    const int echo_pin = 11;
    
    void setup()
    {
        Serial.begin(115200);
        pinMode(trigger_pin, OUTPUT);
        pinMode(echo_pin, INPUT);
    }
    
    void loop()
    {
        float duration, distance;
    
        // trigger a 10us HIGH pulse at trigger pin
        digitalWrite(trigger_pin, HIGH);
        delayMicroseconds(10);
        digitalWrite(trigger_pin, LOW);
    
        // measure time cost of pulse HIGH at echo pin
        duration = pulseIn(echo_pin, HIGH);
    
        // calculate the distance from duration
        distance = duration / 58;
    
        Serial.print(distance);
        Serial.println(" cm");
    
        // wait for next calculation
        delay(2000);
    }