Here's how to blink an LED connected to the GPIO bus on the Raspberry Pi using Python.

• Author: Murray

Description#

There's actually a few web pages that show how to do this — you could just search. But here's one that gives the Python code that shows how to use a keyboard interrupt, so you can Control-C and break out of the loop (properly).

Steps#

• We're going to connect an LED to one of the spare pins on the GPIO bus of the Raspberry Pi, using a resistor to drop the voltage to a safe level for the LED (they can't handle the 3.3 volt power supply directly)
• we'll next create a Python script called 'blink.py'
• we'll execute the script to see the LED blink
• a bit of troubleshooting is warranted

How to...#

Links#

• Basics: Picking Resistors for LEDs by Lenore Edman
• Making a LED blink using the Raspberry Pi and Python