roboFeeder

##nodejs code to run a RFID pet feeder using a Raspberry Pi

github repository

project website

Dependencies:

• NodeJS
  • async
  • body-parser
  • express
  • moment-timezone
  • nedb
  • npmlog
  • pi-blaster.js
  • rpi-gpio
  • serialport
• AngularJS
  • angular-poller
• Other
  • jstimezone
  • pi-blaster

TODO LIST

• General
  • get hardware remaining specifications (wire lengths, wood sizes, etc.)
  • build instructable with pictures while building next physical device
  • rules page is slow to load - wondering if compiling complex jade template and then rendering it is too much for Raspi B+, test on RasPi 2
  • add/update to instructions for servo setup, pi-blaster install/setup (pi-blaster) [https://github.com/sarfata/pi-blaster] [https://github.com/sarfata/pi-blaster.js]
  • add servo and flag to parts list
  • add needed tools list
  • update fritzing schematic to include servo/flag
• UI
  • logo - use awesome logo my sister made on site and such, add pictures of flag with logo waving to site
  • help page - add to this page as I get additional feedback from beta testers

Parts List:

• Raspberry Pi (B+, Pi 2)
• Micro SD card (8GB+) compatible with Raspberry Pi with Raspbian installed (Amazon)
• Wireless network dongle compatible with Raspberry Pi with a decent antenna (Adafruit)
• PIR Sensor (SparkFun)
• RFID Sensor with serial output (9600 bps to use codebase without changing) (Amazon)
• Logic Level Converter 5v - 3.3V (bi-directional) (SparkFun)
• L293D Chip - Dual H-Bridge Motor Driver (Adafruit)
• AdaFruit Half-size Perma-proto Raspberry Pi (Adafruit)
• Downgrade GPIO Ribbon Cable for Pi A+/B+/Pi 2 - 40p to 26p (Adafruit)
• Resistors (220, 1K, 10K)
• Wire (ideally of various colors) //TODO: estimate total length, gauge and optimal number of colors
• Momentary Push Button Switch x2 (Adafruit)
• CD/DVD-ROM Drive (Up-cycled - as long as the drive tray and motor work, the older the better, older drives are more robust)
• Hinge (1-2 inch) //TODO: measure
• Hook and Eye Latch //TODO: measure
• Small self tapping screws //TODO: Measure size and count quantity
• 3/4 inch wood //TODO - get minimum measurements of piece that all pieces can be cut from
• 5.5v - 23v output Standard AC to DC wall plug - Size M (ideally recycle an unused one from something else or get one from your local reuse store)
• Size M DC Coaxial input power jack (Radioshack)
• Hobbywing 5V/6V 3 Amp Switch-Mode Ultimate BEC (DealExtreme)
• Shrink Tubing(Adafruit)
• Male Single Row Headers (Adafruit)
• Female Headers(Adafruit)

Setup Instructions

• setup wifi

  • credentials go in the file /etc/network/interfaces
  • follow these instructions from Adafruit (even though they say they are for Occidentalis (Adafruit's OS) they work fine for Raspbian)

• disable shell and kernel messages via serial in the raspi-config utility

• connect to the pi via ssh, make sure you are in the pi user's home directory (/home/pi/) and run git clone https://github.com/DrCord/roboFeeder.git

• cd roboFeeder then sudo npm install

• add this code to the /etc/rc.local file before the exit 0 line

  `#autorun pi-blaster script to allow servo control'

  su pi -c 'sudo /home/pi/pi-blaster/pi-blaster < /dev/null &'

  #autorun node.js server,js file on boot

  su pi -c 'sudo node /home/pi/roboFeeder/app.js < /dev/null &'

  #autorun the soft shutdown switch code

  python /home/pi/roboFeeder/softShutdownSwitch.py

License

Software, parts list and CAD files to build and run a Raspberry Pi controlled pet feeder Copyright (C) 2015 Cord Slatton-Valle cord42@gmail.com (cordslatton.com)[http://www.cordslatton.com]

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.