0

August 17, 2012 AT 5:00 am

Raspberry Pi + Arduino + SPI #piday #raspberrypi @Raspberry_Pi

Arduino To Raspi Spi Bb Trimmed

Raspberry Pi + Arduino + SPI @ MitchTech.

This tutorial will show you how to communicate from your raspberry pi to your arduino using 3-wire SPI.


Each Friday is PiDay here at Adafruit, be sure to check out our posts, tutorials and new Raspberry Pi related products. Have you tried the new “Adafruit Raspberry Pi Educational Linux Distro” ? It’s our tweaked distribution for teaching electronics using the Raspberry Pi.


Check out all the Circuit Playground Episodes! Our new kid’s show and subscribe!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground”Adafruit’s Apps!


Maker Business — Transforming Today’s Bad Jobs into Tomorrow’s Good Jobs

Wearables — Avoid burnout

Electronics — USB Powered Mayhem!

Biohacking — Biohacking : BiAffect – App that Detects BiPolar Disorder

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



2 Comments

  1. I thought Arduino was 5V and Pi was 3.3V (and not 5V-tolerant) – shouldn’t this be going through a logic level converter? Shouldn’t there be a wire connecting their ground pins together?

  2. Mechanical engineer student going on a whim as to why it’s not blowing up. Either, it’s using a half-duplex protocol and there’s no information going from the Arduino to the Pi. I’m not sure that’s possible with SPI. More probably, there’s 5v going to the Pi but it’s holding up. If you have a clean signal, 3.3v or 5v high and lows will be recognized properly by either standard though there’s an obvious risk of overdriving the Pi. I’ve personally unknowingly plugged a 3.3v SPI GPS module to an Arduino (3.3v power but 5v logic from the Arduino) and it held up and actually worked.

    Proper way to do it would be with a level converter.

Sorry, the comment form is closed at this time.