Arduino Projects of note: Difference between revisions
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* [https://www.youtube.com/watch?v=a_yyhyfar98 Arduino Mini Pro + RTC DS3231 + I²C LCD backpack / I²C scanner + LCD clock demo] code: [http://arduino.arigato.cz/I2C_LCD_BackPack_for_1602_and_2004/] | * [https://www.youtube.com/watch?v=a_yyhyfar98 Arduino Mini Pro + RTC DS3231 + I²C LCD backpack / I²C scanner + LCD clock demo] code: [http://arduino.arigato.cz/I2C_LCD_BackPack_for_1602_and_2004/] | ||
* cheap good rtc http://www.dx.com/p/ds3231-high-precision-real-time-clock-module-blue-3-3-5-5v-222910#.VGg-R_nF98E |