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Raspberry Pi GPIO Control

Former Member

I saw a picture on flickr, which interests me vey much. I want to make a same one, as I want to learn some more about GPIO control.

I got the raspberry Pi and this exact 8 channel relay. How can I do the wire up? There are many cables, I am a bit confused,

image

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  • Dear Eleen:

     

    First, look at http://elinux.org/RPi_Low-level_peripherals

     

    This site tells you how the GPIO pins are wired on the Raspberry Pi. Then google "webiopi" (Web I/O Pi) to see the Python source code for a web interface to turn those GPIO pins on and off.

     

    Next, make a diagram of the pins on the GPIO header and the pins on the relay board and match up the pin names one at a time.

     

    Before you connect anything up, read about TTL voltage levels and make sure you understand 3.3V vs 5V interfacing as connecting the wrong wires leads to more problems, so study is important at this stage.

     

    Charles

Reply

  • Dear Eleen:

     

    First, look at http://elinux.org/RPi_Low-level_peripherals

     

    This site tells you how the GPIO pins are wired on the Raspberry Pi. Then google "webiopi" (Web I/O Pi) to see the Python source code for a web interface to turn those GPIO pins on and off.

     

    Next, make a diagram of the pins on the GPIO header and the pins on the relay board and match up the pin names one at a time.

     

    Before you connect anything up, read about TTL voltage levels and make sure you understand 3.3V vs 5V interfacing as connecting the wrong wires leads to more problems, so study is important at this stage.

     

    Charles

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