Raspberry Pi Cookbook by Simon Monk

Author:Simon Monk
Language: eng
Format: epub, mobi, azw3, pdf
ISBN: 9781449365226
Publisher: O’Reilly Media, Inc.
Published: 2014-06-26T16:00:00+00:00

Red

1kΩ

1.5

Orange, yellow, green

470Ω

2

Orange, yellow, green

1kΩ

1

Blue, white

100Ω

3

Blue, white

270Ω

1

As you can see, in all cases, it is safe to use a 470Ω resistor. If you are using a blue or white LED, you can reduce the value of the series resistor considerably. If you want to play it safe, use 1kΩ.

If you wanted to extend the experiments that you made in the Python console into a program that makes the LED blink on and off repeatedly, you could paste the following code into the IDLE (Recipe 5.2) or nano (Recipe 3.6) editors. Save the file as led_blink.py. You can also download the program from the Raspberry Pi Cookbook website. Follow the link to this book and then the Downloads section.

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