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I2C Rpi and arduino

tabarus12

Ive been searching for a way to comunicate more directly than the usb betwen the Rpi and arduino and I saw that the P5 has an I2C pins and I was wondering if its possible to use those pins to comunicate the arduino and the Rpi, if so can anyone tell me where to go to learn how to use the two together.

Parents

  • You could also use the serial lines. Both the Pi and the Arduino will have tx and rx pins. Again, you may need a level converter, but you can communicate up to 115200 baud.

     

    You didn't mention what kind of arduino you have but the tx and rx are on pins 0 and 1 on the uno style and on gpio pins 14 and 15 on the pi.

     

    You can actually get an arduino pro mini that runs at 3.3v so you won't need the level conversion. I've seen them as cheap as $10.

     

    Have fun.

     

    Mike

  • in reply to mconners

    Michael Conners wrote:

     

    You could also use the serial lines. Both the Pi and the Arduino will have tx and rx pins. Again, you may need a level converter, but you can communicate up to 115200 baud.

     

    You didn't mention what kind of arduino you have but the tx and rx are on pins 0 and 1 on the uno style and on gpio pins 14 and 15 on the pi.

     

    You can actually get an arduino pro mini that runs at 3.3v so you won't need the level conversion. I've seen them as cheap as $10.

     

    Have fun.

     

    Mike

    I like this answer.  If your intent is serial communications and not just learning I2C, this sounds like a better approach.

  • in reply to Former Member

    Yes the intent is to use the arduino uno as data input output both digital and analogic pared with the Rpi to handle control of many many many stuf that the Rpi cant connect to and use the arduino as a serial in and out, I allready have a program for multiplying the arduino ins and outs to an unlimited amount using multiplexers on the input and shift registers on the out, they even have memory to store the data temporary when reading or writing to the outside.

     

    Its very cool and I cant wait to control it with the Rpi. thanks for the ingo I will look in to it and blog the end results with the code files and diagrams for anyone to use thanks again.

Reply
  • in reply to Former Member

    Yes the intent is to use the arduino uno as data input output both digital and analogic pared with the Rpi to handle control of many many many stuf that the Rpi cant connect to and use the arduino as a serial in and out, I allready have a program for multiplying the arduino ins and outs to an unlimited amount using multiplexers on the input and shift registers on the out, they even have memory to store the data temporary when reading or writing to the outside.

     

    Its very cool and I cant wait to control it with the Rpi. thanks for the ingo I will look in to it and blog the end results with the code files and diagrams for anyone to use thanks again.

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