Workshops On Designing Electronic Toys #10

Transcript

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   Workshops On Designing
   Electronic Toys #10
   Hirotaka Nakajima / @nunnun
   http://about.me/nunnun
   1
   

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   Agenda
   2
   • Serial Communication (LED3)
   • Connect your gadget to the PC
   • Final project presentations
   • Work time
   

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   Connect your gadget with PC
   3
   • Arduino has serial support (UART)
   • Arduino and PC are connected via USB
   

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   Serial communication (Windows)
   4
   • TeraTerm 

   http://en.sourceforge.jp/projects/ttssh2/releases/
   

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   Serial communication (Windows)
   5
   

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   Serial communication (Mac &
   Ubuntu)
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   • Unix screen program handles serial connection
   • Install Serial driver: http://www.ftdichip.com/Drivers/
   VCP.htm
   • Open Terminal
   • (install the screen by “apt-get install screen”)
   • type “screen /dev/tty.usbserial-A7004C6X”

   underlined character differs by each gadget
   • to exit screen type “Ctrl A + k”
   

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   Serial communication (Mac &
   Ubuntu)
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   Final Project
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   • According to Syllabus:

   It is mandatory to present/demonstrate your
   masterpiece (electronic gadget) with written reports.
   • Electronic Gadget
   • Must have some sensor
   • Report
   • Written reports
   • Circuit Diagram
   

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   Sensors
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   • Kind
   • Temperature / Humidity
   • Gyroscope / Accelerometer
   • Photo sensor (LED sensor)
   • Pressure
   • Way to connect
   • Analog
   • Digital
   • I2C
   

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    10
    

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    LED3
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    • Send the data to PC through serial
    • http://web.sfc.keio.ac.jp/~takefuji/led3.tar
    • If you have done, draw diagram
    • AE-UM232R fritzing data

    http://www.densikit.com/home/fritzing
    

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    int ledPin=8;
    int sensorPin = A0;
    int sensorValue = 0;
    void setup(){
    pinMode(ledPin, OUTPUT);
    Serial.begin(9600);
    }
    void loop(){
    sensorValue = analogRead(sensorPin);
    if(sensorValue>250){
    digitalWrite(ledPin, 0);
    } else {
    digitalWrite(ledPin,1);
    }
    Serial.println(sensorValue,DEC);
    delay(1000);
    }
    

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    LED3’
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    • LED is turned on if the sensor value is > 250
    • It works with specific LED but not works mine (for
    example)
    • Threshold should be based on the environment
    • Sensor LED data several times
    • Determine the threshold
    • Let’s change the program!
    

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