Talking Clock

This is a very cool project. This digital clock speaks time in your voice. You have to first store audio samples in a SD card and the time is tracked by DS1307 RTC chip. The microcontroller used is Parallex Propeller running at 80MHz.


Popcorn Walkthrough from Gadget Gangster on Vimeo.

For functional details and others, visit link.

LCD Clock based on ATtiny2313

This LCD clock is based on ATtiny2313 microcontroller and displays time in 24 hour HH:MM:SS format. The accuracy is about +1 sec in 48 hours, and provides three tact switches for time setting.

For schematic and software, Visit Here.

Three Channel IR Remote Control based on PIC Microchip

This project is a 3-channel IR remote control for relays. It uses RC5 IR protocols.
Features :

* CPU PIC12F629 at 4MHz crystal for Tx/Rx
* 3 channel output relay
* The Tx use sleep mode for saving battery power
* Use Phillips RC5 protocal
* distance more than 7 m.
* Easy circuit to build and assembly

 Source: http://www.sixca.com/eng/articles/remote/index.html

On both the sides (Tx and Rx), it uses PIC12F629 microchips. For firmware and receiver part, visit here.

Control Your Home Appliances using a DVD Remote Control

Are you looking for a device that can be used to control various household appliances (like fan, rice cooker, lights, etc) using your TV or DVD remote control? If yes, this is the project you are looking for. This is based on Atmega8 microcontroller. The microcontroller gets control commands from a DVD remote through IR link. Each time an appliance is turned ON/OFF, its status is stored in the internal EEPROM location so that it can be accessed later in case of power failure.

Source : http://arif-ece.blogspot.com/2010/07/remote-controlled-home-appliances_10.html

The firmware is written in AVR GCC. Read the full project.

PIC Based Temperature Data Logger

Here's a PIC based temperature data logger. The PIC used is 8-pin PIC12F683 and the temperature sensor used is DS1820 that doesn't require calibration and provides temperature value in digital format. This temperature logger records data inside the internal EEPROM. Each temperature value is 8 byte, so the resolution is 1 degree C.

Besides, the sampling interval is user selectable (1 sec, 1 min, or 10 min). The recorded values can be sent to a PC through a serial port.

Read rest of the project.