Raspberry pi tutorial #1

Raspberry pi tutorial #1

• 1.
  1 Raspberry Pi Tutorial#1 - Blink the LED - Dong Ho Son POSTECH Pohang, Korea donghoson@postech.ac.kr
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  2 Turning on theLED - Overview  Necessary Components • Raspberry Pi • 1 x Breadboard • 1 x red LED • 1 x Resistor • Jumper cables Anode Cathode Power rails Terminal strips
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  3 Turning on theLED – Circuit Configuration  Ground pin  the cathode of the LED  The anode of the LED  a ballast resistor  The ballast resistor  the pin GPIO 17 Ground GPIO 17 AnodeCathode
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  4 Turning on theLED - Python  Import RPi.GPIO as GPIO • Import Python GPIO module  GPIO.output(pin, GPIO.HIGH) • Turn on the LED  time.sleep(1) • Delay for 1 second  GPIO.output(pin, GPIO.LOW) • Turn off the LED  GPIO.setmode(GPIO.BCM)  GPIO.setup(17, GPIO.OUT) • Select GPIO #17 as output pin
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  5 Turning on theLED – Program Writing & Execution  Python Programming using Text editors • Desktop Graphical Editors – LEAFPAD, IDLE, GVIM • Command-Line Editors – NANO, VI, VIM, EMACS  Python Programming Interpreter • Built-in Interpreter provided in Raspbian • Command line execution: “$ python program.name”
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  6 Turning on theLED - Result  The LED is blinked! Ground GPIO 17