Presented by:

Adam Monsen

from SeaGL

SeaGL founder. Into FLOSS. Seattleite. VP Engineering at C-SATS. Baker, biker, father of two.

In this talk I'll show you how I created a raspberry pi-powered chicken door using only Free Software. You can use this knowledge to get inspired to create your own automated hardware+software systems. I'll go over these features:

  • hardware interleave gravity lock mechanism
  • instant-read photoresistor poll door actuation trigger
  • photoresistor signal analog to digital conversion
  • worm gear 12V DC motor controlled via L9110 motor driver chip
  • dual hall-effect magnetic door position sensors
  • fallback door status mitigating magnetic sensor failure
  • night-vision wide-angle camera with motion-triggered video capture
  • C + bash + python polyglot control code with standardized output convention
  • offline operation with 2.4Ghz wifi for monitoring and maintenance

I'm a hardware beginner, so this is a beginner talk in terms of hardware. I know just enough about hardware to ask someone smarter how to not make everything start smoking.

I've been writing software for about 20 years, so I want to get into some detail about the software.

This talk isn't about carpentry--you'll have to ask my wife about that.

2017 October 6 - 13:00
20 min
Room 1113

Happening at the same time:

  1. Python Packaging and Dependency Management in the Real World
  2. Start Time:
    2017 October 6 13:00

    Room 3199