jetlib.sec » Tags » ds1307

[IronJungle] got around to putting together every tinkerers favorite project: a clock with a strange way of displaying the time. For his clock, [Jungle] took a trio of voltmeters and turned them into a clock that displays the current hour, minute, and second on custom paper dials. [IronJungle] connected a PIC 14M2 microcontroller to a DS1307 [...]

Tags:  ironjungle volt clock paper-dials ds1307 favorite-project hacks  

[Giorgos Lazaridis] just finished building a simple clock on a breadboard. It uses a common real time clock chip, the DS1307. This is less expensive that its full-featured older brother, the DS3232. The difference between the two is that the 1307 requires an external 32.768 kHz crystal and it is not temperature compensated. This means [...]

Tags:  clock simple chip real-time-clock clock-chip ds1307 hacks  

Adafruit’s got a handy breakout board for the DS1307 RTC available. This chip isn’t nearly as accurate as the DS3231 used in the Chronodot but it’s quite a bit cheaper. The breakout makes this easy to breadboard or plug into an Arduino and has everything you need; clock crystal, a backup battery, filtering capacitor, and [...]

Tags:  board breakout adafruit ds1307 clock-crystal arduino tool hacks