Zeroohm's Beginners Guide on Raspberry Pi

[Zeroohm]

Welcome to Zeroohm Raspberry Pi Tutorial. Zeroohm will focus its efforts on helping the community learn more about Raspberry Pi fundamentals and basics starting with basic control of LED's, motors, sensors and utilizing of wireless communication. We hope that you find this useful, Please, leave a comment for any questions or comments or reviews!

To use raspberry pi’s GPIO pins in python you must first download the ‘RPi.GPIO’ library. To do so, open the terminal in the raspberry pi and run the following command:

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sudo apt-get update

After it’s done, run:

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sudo apt-get install rpi.gpio

To access the GPIO pins in python you must first import the ‘RPi.GPIO’ library to the code:
RPi.GPIO as GPIO

Then we must the mode of the pins. In this you have two options, the first mode is ‘BOARD’ mode where use the physical numbering of the pins (you can simply count with your finger!!). The second mode is the ‘BCM’ mode, when use this mode you need to follow the number after ‘GPIO’ in the figure below:

To set the mode to ‘BOARD’ we use:

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GPIO.setmode(GPIO.BOARD)

To set the mode to ‘BCM’ we use:

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GPIO.setmode(GPIO.BCM)

Then we set the pin that we want to use as input or output.

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GPIO.setup(pin,GPIO.IN)
GPIO.setup(pin,GPIO.OUT)

Where ‘pin’ is the number of the GPIO pin based on whether you used BOARD or BCM:

Ex: In BOARD pin number 3 is pin number 2 in BCM.

- See more at:
https://www.zeroohm.com/blog/introducti ... pberry-pi/

[DougieLawson]

If you're going to post python code in the forum at least post it in [CODE]stuff goes here[/CODE] tags.

Also with all current versions of Raspbian Jessie (full version) RPi.GPIO is already installed for python3.

[KLL]

ahm: simple commands like the very first:
Sudo apt-get update
not work

[fruitoftheloom]

Welcome, you appear to have not proof read or used TAGS to make your post understandable

[mahjongg]

ahm: simple commands like the very first:
Sudo apt-get update
not work

try sudo apt-get update
as everything in Linux is case sensitive, so Sudo and sudo are not the same thing!

Corrected the original first post, and added code tags.