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Teaching an old clock Using Atmega32

While exuding retro style, the alarm clock in its original state lacked many desirable features of today's alarm clocks. The only controls consisted of a single on/off switch. It also lacked AM/PM indication, making it impossible to sleep for more than 12 hours. Our project sought to maintain the integrity of the original alarm clock, while using a microcontroller to automatically manipulate the controls, i ...

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Retractable Alarm Clock (RAC) Using Atmel Mega32

1.1  Motivation: Alarm clocks are essential in almost everyones daily life.  For most of us, we start our day to the sweet noise of our alarms.  While some people wake up instantaneously to the first chirp of an alarm, some struggle everyday to get out of the bed. The Retractable Alarm Clock is the next generation alarm clock that combines both active alarm feature and penalty system that trains the users t ...

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HDD analog clock with LCD touchscreen Using Atmel Mega32

Introduction The clock is one of the oldest inventions in human history and has been used for centuries as in instrument for measuring time. There are many ways to implement this ancient technology by simple and practical methods. However, si [caption id="attachment_18482" align="aligncenter" width="531"] HDD analog clock with LCD touchscreen Using Atmel Mega32[/caption] mplicity and practicality were not a ...

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Clock ControllerV1.1 using AT89C2051

Builda digital clock that turns AC load on/off with preset time. sourcecode with sdcc for 8051. The Clock Controller V1.1was designed to be an exemplary of using 'C' language to control timer0interrupt, 7-segment LED and keypad scanning. It provides 1-bit sink currentdriving output, for driving a relay, opto-triac, say. Many projects requiring7-segment display and keypad interfacing may get the idea from th ...

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xTimer V1.0 using AT89C4051 microcontroller

My wife asked me to find another timer for using in the kitchen. She got one already with analog setting, but it needs one AA size battery. Digital setting may not easy for human interface. However I will make it for easy time setting. When I am free I will modify it to be analog setting. May be I can use 555 monostable for POT reading. So I got my lab at home finding old boards and parts on the shelf. I fo ...

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AT89C4051 to work as a Real time Digital clock

Its a digial clock which make use of AT89C4051 to work as a Real time clock. Figure 1 shows the circuit diagram for the digital clock. Port 1 of the controller (AT89C4051) is used as the data lines for the LCD (starting from pin 7- pin14 of LCD). here i am using a 16 x 2 lines LCD display. In the first line, I'll display "DAY" and "DATE", in the second line, i am displaying "TIME" with am/pm. Port 3 is used ...

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xTimer with 4094 using ATMEL89C2051 microcontroller

The original version of xTimer used MAX7219 for driving 7-segment. This new design uses a cheap CMOS shift register, 4094 for LED interface. Each 4094 drives a 0.5" 7-segment without the need of limiting resistor. The left-hand LED is timer function with buzzer alarm output. The right-hand is for clock display. Hardware Schematic Fig. 2 shows a complete hardware schematic. U2 is ATMEL 89C2051 running with 2 ...

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