Arduino Projects of note

• Arduino temperature controlled PC Fan.

• Tutorial: Arduino and the I2C bus – Part One

• Arduino Mini Pro + RTC DS3231 + I²C LCD backpack / I²C scanner + LCD clock demo code: [1]

• cheap good rtc http://www.dx.com/p/ds3231-high-precision-real-time-clock-module-blue-3-3-5-5v-222910#.VGg-R_nF98E

RTC

I have some zs-042 RTC , it has a DS3231 RTC and what looks like an ATmega32 on it.

LCD

Liquid Crystal Display

Some notes:

• http://tronixstuff.com/2011/01/08/tutorial-arduino-and-monochrome-lcds/