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vivarium

Expandable Vivarium Controller (Arduino)

This project is the driver software for an expandable Vivarium temperature controller using an Arduino as the system master controller.

*** NOTE: There is a varient of this project for Arduino Yun using a REST API on the "yun" branch ***

Features

This controller has a number of software features

  • Menu driven via 12 digit telephone keypad
  • Scrolling LCD temperature display
  • Real Time Clock enabled
  • Configurable names for vivarium sensors
  • Configurable binding for sensor to 110v relay
  • Can set minimum, maximum warning threshold temperatures which trigger an alarm
  • Can set target temperature for each sensor
  • Can log data to a micro SD-Card
  • Serial interface (via USB) for external communication (I use an old WRT54SLGS flashed with OpenWRT)
  • Configurable F/C display
  • Backlight Off "Sleep" mode for LCD, press and hold '*' to wakeup

Required Hardware

In addition to an Arduino the following other components are required (URLs are provided for example only):

Miscellaneous hardware, resistors, sockets, plugs etc

Note: When using low voltage (<110v) controlled 100v relays, always observe mains level precautions and ensure isolation between the low voltage and high voltage sides. Use a non-conductive filler compound, resin, or a non-condudting shield between the two voltage zones

Required Libraries

In addition to the software in this repository a number of external libraries are needed

Pin definitions

  • I2C - Display and keypad, Optional DS1307RTC Real Time Clock
  • Pin #2 (Digital) - Dallas 1-Wire for the temperature sensors. These are all daisy chained on this one pin.
  • Pin #3 (Digital) - Relay #1. Additional relays may be added as required
  • Pin #8 (PCM) - Sounder for alarm

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Expandable Vivarium Controller (Arduino)

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