Attiny85 Faucet Water Temperature Sensor
Real life testing in the kitchen sink! Note the tri-color LED. Blue is cold and fades into Green which then flips to increasing Red at 85F.
This project is an Attiny85 Arduino circuit and uses the Coding Badly attiny core available here:
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)
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.