Unreal: Arduino Plugin For UE4

since: 2016/06/15
update: 2017/03/23
reference:
1. Plugin UE4Duino - Arduino to UE4 plugin Release!
2. UDK - UE4Duino Plugin
3. loveunrealengine | TIPS

A. 系統環境:
    OS: Windows 8
    UE: UE 4.10

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B. Arduino
    1. 將 Arduino 連上電腦, 確認 COM port 的號碼(在此為 4)

    2. 設定好 Arduino 的板子與序列埠

    3. 以燒錄器上傳 Arduino 的程式碼:
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  Serial.println(random(1, 100));
  delay(1000); // wait for a second
}

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C. Unreal Engine
   1. 到 Plugin UE4Duino - Arduino to UE4 plugin Release! 下載檔案:
       UE4Duino_4_10.zip , 解壓縮後得到 UE4Duino 資料夾

   2. 新增空白的 UE 專案: UE4Duino_01, 在專案下新增 Plugins 資料夾, 並將剛剛的
       UE4Duino 資料夾放入.

   3. 開啟 UE4Duino_01 專案, 檢查 plugin:
       Edit > Plugins:

   4. 進入 UE4Duino_01 專案的 Level Blueprint, 在 Event Graph 修改如下:

   5. Complie Level Blueprint 後關閉 Level Blueprint,
      回到 Level Editor, 在 Content Browser 存檔(Save All) 後, Build -> Play

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D. Turn the LED on /off

   1. Arduino:
int led = 13; // LED pin number
String content = "";
char character;

void setup() {
  Serial.begin(9600);
 
  // initialize digital pin 13 as an output.
  pinMode(led, OUTPUT);
 
  delay(1000);
 
  Serial.println("setup ok");
}

void loop() {
  delay(100); // delay in between reads for stability
 
  // UE4 Input
  while(Serial.available() > 0)
  {
    character = Serial.read();
    if(character != '^') {
      content.concat(character);
    }
    else {
      if (content == "ON") {
        digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
        Serial.println("turn the LED on");
      }
      else if(content == "OFF") {
        digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
        Serial.println("turn the LED off");
      }
      content = "";
     
    } // end of else
   
  } // end of while
}

   2. Unreal

   3. 結果:
       按下: o 鍵 ---> Serial Opened
                 h 鍵 ---> turn the LED on // HIGH is the voltage level
                 l 鍵 ---> turn the LED off // making the voltage LOW
                 c 鍵 ---> Serial Closed

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E. UE4Duino 2.0

   1. Arduino:
void setup() {
 // put your setup code here, to run once:
 Serial.begin(9600);
}

void loop() {
 // put your main code here, to run repeatedly:
 //Serial.println(random(1, 100));
 //Serial.print("#");
 Serial.print(random(1, 100)); // not need use Serial.println
 //Serial.println("#");
 delay(1000); // wait for a second
}

   2. Unreal: