Show HN: I Built a GitHub Activity Display with an Arduino and LED Matrix | Hacker News Reader

Show HN: I Built a GitHub Activity Display with an Arduino and LED Matrix

jack.minardi.org

40 pointsdoctoboggan10 comments

Let me know if anyone has any questions, this was a fun project to tackle. The electric imp was interesting to work with, however the cost of the Imp + breakout board was more than a raspberry pi + wifi dongle. The Pi also does much more than just wifi, and I don't have to program it in squirrel.

I was gonna ask about that. Also could you just drive the TiM with the rPi?

I have a TiM board lying around and this looks like a great project to throw up for decoration and motivation. Thanks!

The TiM board needs very precise timing to control, I do not think this would be possible with a Raspberry Pi.

Though there's no Neopixel library at the level of the current one for Arduino, you could drive the whole system off of the Imp.

Mozilla built two RGB LED tickers, driven by an Imp, and installed them on their blimp: http://www.youtube.com/watch?v=Sz3fEYFDl2o

Hey, great work! This is awesome! If you're looking to display weather and stock information too, you might want to check out my project here: https://github.com/zachfeldman/digi-lcd-server.

Isn't hardware fun!?1

Thanks! Yeah, I love working with hardware. I will definitely check out your project.

I've got a similar art project I'm working on for my company. I plan on setting up a light array where each light represents a user currently on our website and the color/activity represents an action or location.

It's all part of my desire to make our server room 'feel' more interactive than it is right now. Thanks to co-location I've got three big glass windows and only one physical rack on location :)

Nice work. I don't know much about hardware programming but if I manage to recreate it I am going to use it on Christmas :) How much did it cost you?

Well I actually got everything for free, so $0 ;)

But if you need to purchase everything here are the prices:

* Arduino: $25

* TiM Board: $45

* Electric Imp + Breakout: $42

Total: $112

Yikes, that more than I expected... This is why you need to make friends with people who give away hardware!

Alternative: 10 inch Android tablet for 70$.

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