Arduino to RPi -- Galvanically Isolated I2C

Reading time ~1 minute

Originally posted on www.letsmakerobots.com

Breakout PCB Arduino Code

I’ve waited to finish incorporating my Raspberry Pi into my bot for an ample bit. But since I know so little about electricity, I swore to myself I wouldn’t add my Pi to my bot until I was absolutely sure I wouldn’t fry it.

Well, I’m still not “absolutely” sure, but I feel this little optoisolator has brought me a lot closer. This builds on my post a week or so ago about making Eagle parts.

I plan to actually list out what tweaks a Wheezy image needs to get this optoisolator build to work. It’s actually pretty easy–but whatever you, don’t be lured in by quick2wire. Those buggers wasted most of my day :(

If anyone has questions let me know.

Oh, one note. When I populated the board I used 4.7k resistors on the Arduino side, but I pulled off everything on the Raspberry Pi side. It seems the Pi has built in pull-ups that do the job rather well.

ADUM1250ARZ Datasheet

Hope everyone is well :)

Bluetooth Low Energy in JavaScript

For a long time now I've put off learning JavaScript. It really never interested me. I'd like to say it was the thought, "Oh, JavaScrip...… Continue reading

Stitching Together HMIS Exports

Published on April 22, 2017

Lumi4 -- MVVM

Published on April 15, 2017