This Instructable builds on the mini Arduino environment monitor
and mini Arduino EEG monitor
It allows you to control up to 4 relays using time, temperature and /or Light, your mind, or whatever sensor you would like to use.
The examples are prototypes, I don't go any further than putting them together on a breadboard. I haven't made a permanent case for them
The main purpose of this instructable is to demonstrate how you can use the arduino to control any device using sensor input and conditional logic to make decisions and activate the device.
My objectives are to make these instructables inexpensive, simple, practical, and interesting.