Workshops On Designing Electronic Toys #11

Transcript

1. 5IFTFTMJEFTBSFDPQZSJHIU˜)JSPUBLB/BLBKJNB3FEJTUSJCVUFBOEEJTDMPTVSFPGUIFTFTMJEFTBSFOPUQFSNJUUFEXJUIPVUQFSNJTTJPOT
   ,FJP6OJWFSTJUZMPHPJTMJDFOTFECZJUTDPQZSJHIUIPMEFST
   Workshops On Designing
   Electronic Toys #11
   Hirotaka Nakajima / @nunnun
   http://about.me/nunnun
   1
   

   View Slide

2. 5IFTFTMJEFTBSFDPQZSJHIU˜)JSPUBLB/BLBKJNB3FEJTUSJCVUFBOEEJTDMPTVSFPGUIFTFTMJEFTBSFOPUQFSNJUUFEXJUIPVUQFSNJTTJPOT
   ,FJP6OJWFSTJUZJTMJDFOTFECZJUTDPQZSJHIUIPMEFST
   Agenda
   2
   • Using I2C Sensor
   • Work time
   

   View Slide

3. 5IFTFTMJEFTBSFDPQZSJHIU˜)JSPUBLB/BLBKJNB3FEJTUSJCVUFBOEEJTDMPTVSFPGUIFTFTMJEFTBSFOPUQFSNJUUFEXJUIPVUQFSNJTTJPOT
   ,FJP6OJWFSTJUZJTMJDFOTFECZJUTDPQZSJHIUIPMEFST
   Sensors
   3
   • Kind
   • Temperature / Humidity
   • Gyroscope / Accelerometer
   • Photo sensor (LED sensor)
   • Pressure
   • Way to connect
   • Analog
   • Digital
   • I2C
   

   View Slide

4. 5IFTFTMJEFTBSFDPQZSJHIU˜)JSPUBLB/BLBKJNB3FEJTUSJCVUFBOEEJTDMPTVSFPGUIFTFTMJEFTBSFOPUQFSNJUUFEXJUIPVUQFSNJTTJPOT
   ,FJP6OJWFSTJUZJTMJDFOTFECZJUTDPQZSJHIUIPMEFST
   I2C
   4
   • Inter-Integrated Circuit
   • Bus spec for internal device communication
   • Bus speed: 100kbps, 400kbps ~ 3.4Mbps
   • Shared 2 physical pins for I/O
   • Clock signal (SCL)
   • Data transfer (SDA)
   • 10k pull-up resistor
   • Master-Slave model
   • Binary protocol
   

   View Slide

5. 5IFTFTMJEFTBSFDPQZSJHIU˜)JSPUBLB/BLBKJNB3FEJTUSJCVUFBOEEJTDMPTVSFPGUIFTFTMJEFTBSFOPUQFSNJUUFEXJUIPVUQFSNJTTJPOT
   ,FJP6OJWFSTJUZJTMJDFOTFECZJUTDPQZSJHIUIPMEFST
   I2C
   5
   • 1. Start bit (1 bit)
   • 2. Slave Address (7 bits)
   • 3. Read / Write flag
   • 4. Acknowledgement (1 bit) from slave
   • 5. Data (8 bits)
   • 6. Data-Acknowledgement (1 bit) from slave
   • 7. Stop bit (1 bit)
   Chart: http://nora66.com/avr/prog2.html
   

   View Slide

6. 5IFTFTMJEFTBSFDPQZSJHIU˜)JSPUBLB/BLBKJNB3FEJTUSJCVUFBOEEJTDMPTVSFPGUIFTFTMJEFTBSFOPUQFSNJUUFEXJUIPVUQFSNJTTJPOT
   ,FJP6OJWFSTJUZJTMJDFOTFECZJUTDPQZSJHIUIPMEFST
   I2C
   6
   • 1. Start bit (1 bit)
   • 2. Slave Address (7 bits)
   • 3. Read / Write flag
   • 4. Acknowledgement (1 bit) from slave
   • 5. Data (8 bits) from slave
   • 6. Data-Acknowledgement (1 bit)
   • 7. Stop bit (1 bit)
   Chart: http://nora66.com/avr/prog2.html
   

   View Slide

7. 5IFTFTMJEFTBSFDPQZSJHIU˜)JSPUBLB/BLBKJNB3FEJTUSJCVUFBOEEJTDMPTVSFPGUIFTFTMJEFTBSFOPUQFSNJUUFEXJUIPVUQFSNJTTJPOT
   ,FJP6OJWFSTJUZJTMJDFOTFECZJUTDPQZSJHIUIPMEFST
   I2C with Arduino
   7
   • Arduino I2C support: Wire

   http://www.arduino.cc/en/Reference/Wire
   • Lots of libraries for sensors
   • Today we will use GY-80
   • L3G4200D (3 axis gyro)
   • ADXL345 (3 axis accelerometer)
   • HMC5883L (compass)
   • BMP085 (temperature & pressure sensor)
   

   View Slide

8. 5IFTFTMJEFTBSFDPQZSJHIU˜)JSPUBLB/BLBKJNB3FEJTUSJCVUFBOEEJTDMPTVSFPGUIFTFTMJEFTBSFOPUQFSNJUUFEXJUIPVUQFSNJTTJPOT
   ,FJP6OJWFSTJUZJTMJDFOTFECZJUTDPQZSJHIUIPMEFST
   I2C with Arduino
   8
   • http://web.sfc.keio.ac.jp/~takefuji/gy80.tar
   • pin
   • Arduino: A4 (SDA), A5 (SCL)
   • GY-80: SCL, SDA
   

   View Slide

9. 5IFTFTMJEFTBSFDPQZSJHIU˜)JSPUBLB/BLBKJNB3FEJTUSJCVUFBOEEJTDMPTVSFPGUIFTFTMJEFTBSFOPUQFSNJUUFEXJUIPVUQFSNJTTJPOT
   ,FJP6OJWFSTJUZJTMJDFOTFECZJUTDPQZSJHIUIPMEFST
   9
   

   View Slide

10. 5IFTFTMJEFTBSFDPQZSJHIU˜)JSPUBLB/BLBKJNB3FEJTUSJCVUFBOEEJTDMPTVSFPGUIFTFTMJEFTBSFOPUQFSNJUUFEXJUIPVUQFSNJTTJPOT
    ,FJP6OJWFSTJUZJTMJDFOTFECZJUTDPQZSJHIUIPMEFST
    2VFTUJPO $PNNFOUT
    IJSP!BXBTGDLFJPBDKQ
    IUUQBCPVUNFOVOOVO
    !OVOOVO
    10
    

    View Slide