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ATmega Alarm Clock & Thermometer Humidity meter

First, let me introduce you my project. I made an Alarm clock with extended functionality & thermometer and humiditymeter. Everything started when my friend (who used to bring me some old electronic rubbish and I used to check if there's not something useful) brought me some cashing register display similar like that. When I first see them I knew that I will made from it alarm clock. I'm programmer and ...

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DS1307 RTC based Digital Clock Designing in 12 Hour Format with ATmega32 and 7-Segment Display

A digital clock is a type of clock that displays the time digitally (i.e. in numerals or other symbols), as opposed to an analog clock, where the time is indicated by the positions of rotating hands. The clock/calendar provides seconds, minutes, hours information. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. In this project, we will learn How to design a DS1307 Real Time ...

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Using Maxim DS1307 Real Time Clock with Atmel AVR Microcontroller Using Atmega32

Building our own digital clock is one of the dreamed project by most of the hobbyist or anyone that want to learn or involve seriously in the embedded system world; the ability to integrate time, day and date to the embedded system is one of the important knowledge that should be known by any embedded system designer. Today’s technology makes life easier as all these capabilities has already built nicely in ...

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LCD clock with 4″ display

The time keeping is provided by DS3231 RTC chip with an integrated high accuracy (± 5ppm) MEMS crystal. This makes PCB design very simple, as one does not need to take care on special traces design around the crystal. The chip is powered via the VBAT pin with VCC pin being grounded. This way its drawn current is minimum. The RTC chip is equipped with a temperature sensor, which is not used in the current de ...

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PIC24 bedside table alarm clock

PIC24 Bedside Table Alarm Clock Another year, another clock, but for the first time for my alarm clocks [1][2][3] I am not using an MSP430 but a PIC24 instead. Standby current is with 5.5 µA only slightly higher than that of my MSP430 based ones. Time keeping is done using the RTCC pheripheral, which I also used for the first time. It can be seen in action in this YouTube video: https://youtu.be/I8K4sLvQby4 ...

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S.M.A.R.T. Alarm Clock

Wouldn’t it be nice to have an internet-connected alarm clock that automatically sets itself, based on your calendar? You would never miss an early appointment, never forget to set your alarm, and enjoy more restful sleep knowing you’ve solved the nightmare of regulating your alarms. An internet-savvy alarm clock could even watch your inbox and wake you up if friends or family send you an important email. T ...

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DIY Apple Clock

The ATtiny24, 44, 84 series only has 1 external interrupt (INT0) [Page 48 of the datasheet]. This is the interrupt that we are most familiar with using on the Arduino. You can simply use this interrupt by saying "attachInterrupt()" While it only had 1 interrupt, I wanted to have two buttons on my clock: one button to increase the time and another to decrease the time. Looking back on the datasheet, the ATti ...

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