What about placing a different colour label on bottom of food & water things and using a colour detector.
Hello, I need help deciding which sensor would do the job. The problem is I am doing a project with a Arduino Uno what is 'acting' like a desktop pet where I have 2 LEDs which notify the user that if one goes off it wants some food and the other if it wants a drink. I have made 2 small physical objects that will act as the food and water. And when you press them against the device the LEDs will go off.Is there a sensor or something that will know the difference between each object? I was thinking of using a RFID reader and placing the tags into the 2 objects. Will this work, and/or is there another way I can do this?Sorry if it sounds confusing.Thanks!
QuoteWhat about placing a different colour label on bottom of food & water things and using a colour detector.Along these lines,http://www.parallax.com/Store/Sensors/ColorLight/tabid/175/CategoryID/50/List/0/SortField/0/Level/a/ProductID/429/Default.aspx
Will the Uno be able to power the RFID, accelerometer, piezo and 3 LEDs or will I need to use a external power source?Also, I want the 'food' and 'drink' LED's to notify the user about every 30 minutes. Will I be able to code this in or will I need a timing device of some sort?