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Rubidium Disciplined Atomic Clock

Description As recently stated on hackaday: "A timepiece is rather a rite of passage in the world of hardware hacking"Presenting: A personal time base. Depending on current location, elevation, and velocity we all experience very real time dilation effects. Time does not pass at the same rate for everyone. The "Project GREAT" experiment in 2005 measured a 20 to 30 ns shift during a weekend family trip to Mt ...

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DS1307 RTC Interfacing with AVR microcontroller

In this tutorial we will learn How to interface RTC DS1307 with AVR microcontroller. We are using Atmega8 for the demo. GENERAL DESCRIPTION The DS1307 serial real-time clock (RTC) is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C™, bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, ...

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Digital Wall clock Using Atmega-8 and RTC

Clock is one of the most essential house hold things. There are various types of clocks like good old Pendulum clocks, Analog clocks and the now trending modern Digital clocks. Digital clocks has many advantages over the analog clocks like the Accuracy in time, easy reading of time when compared to analog, visibility even in darkness and so on... Here a basic Digital Wall clock is presented which is built u ...

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Alarm clock Using Atmega-328 and RTC

Hi everyone! This is my first instructable! After reading hundreds of instructables, I decided to make one myself. Clock is one of the most essential house hold things. There are various types of clocks like good old Pendulum clocks, Analog clocks and the now trending modern Digital clocks. Digital clocks has many advantages over the analog clocks like the Accuracy in time, easy reading of time when compare ...

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Arduino MP3 alarm clock

After finishing my hexapod I needed another project Over the last year I have bought numerous small break out boards on Ebay. So I came up with the idea to make an Arduino MP3 alarm clock. The idea is simple, an LCD that shows the date and time. A couple of buttons to set an alarm, and an MP3 module and small speaker to play an MP3 when the alarm goes of. I decided to use my 6€ 12864ZW graphical LCD, with 1 ...

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Interfacing RTC & serial EEPROM using i2c bus, with ATmega128 uC

Hi friends, here is my experiment with i2c bus for interfacing serial EEPROM (24C256) and RTC (DS1307) using AVR microcontroller ATmega128. The circuit is also provided with an RS232 port for connecting with PC to send commands for reading/writing EEPROM or setting date/time in RTC (Click on images to enlarge them). Communication with PC is done through Hyper Terminal. A screen shot of the message sent to P ...

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Music Playing Alarm Clock using Microcontroller AT90USB1286

This Instructable will be about designing a music player from using various building blocks. You will understand the communication between the microcontroller, memory, computer, LCD display, RTC, IR remote, and the music file decoder. I will try my best to to teach you in a way so that you can design your own projects using the skills you learn, without blindly following instructions. I know most of you wil ...

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