Rasperry pi Part 13
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The document provides a guide on interfacing an LED with a Raspberry Pi using GPIO pins. It outlines the materials needed, the steps for setting up the circuit, and a simple Python program to control the LED. The instructions include creating the circuit on a breadboard and writing code to manage the LED's state through GPIO controls.
Rasperry pi Part 13
- 2. www.techvilla.org.in LED interfacing raspberry pi. construct a basic electrical circuit and attach it to your RPi GPIO pins write a simple Python program to control the circuit
- 3. www.techvilla.org.in What You Will Need: Raspberry Pi configured with the GPIO library 1 - small led, any color 1 - 50 ohm resistor Some small-gauge solid core wire Breadboard and/or alligator clips to hold connections
- 4. www.techvilla.org.in Setting up circuit. Before starting, unplug your RPi. Using your assortment of materials, create the circuit on either your breadboard, or using your alligator clips. Pin 1 (+3.3 volts) should go to the longer leg of your led. This pin provides a steady supply of 3.3v. Unlike the GPIO pins on your RPi, this pin is not programmable, and cannot be controlled by software. Attach the shorter leg of the led to the resistor. Finally, attach the other end of the resistor to Pin 6 (- ground) on your RPi. Power on your RPi - the led should immediately turn on.
- 6. www.techvilla.org.in Controlling The Led With Python move the positive lead from the 'always on' 3.3v pin to one of the programmable GPIO pins. Here is what our circuit will look like:
- 7. www.techvilla.org.in Writing Code Type : sudo nano program_name.py Enter following code: import RPi.GPIO as GPIO ## Import GPIO library GPIO.setmode(GPIO.BOARD) ## Use board pin numbering GPIO.setup(7, GPIO.OUT) ## Setup GPIO Pin 7 to OUT GPIO.output(7,True) ## Turn on GPIO pin 7 Save file. Type python program_name.py to run program.