7" Raspberry Pi Display with Arduino

I would use a simple UART interface since it is available on both the Raspberry Pi and Arduino. On the Arduino side use Serial Write/Read to the correct port in case there are two or more available. This would be written in C of course. On Raspberry Pi, depending on software and hardware, be aware there are two possible UARTS. One is software by default. Th other is hardware. The difference is the name of course. Read RPi Serial Connection - eLinux.org  for details before proceeding. I will stop here, but for any specific questions, ask here. Good luck with the project.

Clem

Curious why you would recommend the UART interface instead of the USB? It's a simple matter to print out of the USB on the arduino, and just as simple to read from the usb on the Pi. You are basically using the same serial libraries in both cases and you get the added benefit of powering the arduino and having a clean ready made cable.

Mike

As a matter of fact I did this recently, I encoded some sensor data into a JSON object and passed it out the USB port on the Arduino when requested , and I used the python JSON and serial libraries on the Pi to make the request and receive the resultant data.

Very clean.

Mike

Because:

The Capstone Project is a two-semester process in which students pursue independent research on a question or problem of their choice, engage with the scholarly debates in the relevant disciplines, and - with the guidance of a faculty mentor - produce a substantial paper that reflects a deep understanding of the topic.

Clem

That's an interesting answer. I'm not sure how adding 2 wires and a ground shows a deeper understanding of the solution. And the communication method is probably not the focus of his project as the OP asked for an easy means of transferring information.

But, I see where you're coming from, but my question, however poorly phrased, was is there a technical reason you recommended that solution. I will infer from your answer that you felt that this would help the OP gain more experience.

Mike

Thank you for the swift, professional reply. I will certainly be looking into this in the next coming months as our group decides what will be best for our situation. This won't be decided until the second semester but I will be sure to respond to this thread with more questions as our project progresses.

Matt.

Thanks for the response! I will be looking into your suggestions as well as Clem's. It would appear that your method is simpler to understand than Clem's but his would most likely give me more experience. A deeper understanding of the process as he puts it. I'm going to look at both, see what is best for our needs and will keep the thread updated. Hopefully getting some more quality advice from the community in the coming weeks.

Matt