Hot Yet? This faucet water monitor will prevent plunging your hands into cold water

Notes

This project is an Attiny85 Arduino circuit and uses the Coding Badly attiny core available here:
https://code.google.com/p/arduino-tiny/source/list

For the AVR programmer, I used the Adafruit ZIF shield and Adafruit flavor of the ISP software. running on Uno. I am not using a bootloader for the tiny85 and I am not modifying any fuses other than what is specified in the Coding Badly boards.txt file:
ATtiny85 @ 8 MHz  (internal oscillator; BOD disabled)

• low_fuses=0xE2
• high_fuses=0xD7
• extended_fuses=0xFF

I consider this an advanced project and not suitable for newbies. There is ample support on the Internet for questions relating to programming Attiny85 with the Arduino environment.  I am using version 1.0.5 and I recommend you do the same.>Please do not leave comments for personal support – I am unable to assist you in this manner.  The circuit has been built twice, it works and the parts are detailed and the exact ones I used. Make changes only if you know what you are doing.  The code makes use of concepts from various authors and where possible, references are provided; if you have questions you need to do your own research.

Thank you and have fun.

Arduino source (schematic)

arduino_source.

Overview

Save water,
Save energy,
Save money …     $weet!

How many times have you turned on the faucet and walked away while the water warmed? Or, turned on the water and cursed because you burned your hands or the water was ice-cold?

For more detail: Hot Yet? This faucet water monitor will prevent plunging your hands into cold water