Wake up timer : circuit is fixed

Wake up timer : circuit is fixed

Now I have finished designing circuit and below is snapshot of its discrete one.

This wake up timer has below functions:

1. Light up

LED light is turned on step by step by PWM driving before wake up buzzer is ringing. 

The time to lighting up can be changed by setting. This function can let user easy wake up like sunrise.

2. Buzzer

Sound is generally changed from small sound to large one for comfortable wake up.  

Buzzer sound is changeable because IC for buzzer is PIC16F88.

3. TV control

XBEE is equipped. Very rich. Then, this board can send the command to its counterpart via USART. The other XBEE receives the command and send the IR signal for TV control such as powering up and making sound large. The IR signal of my TV is already analyzed.

In the near future, all of the house appliance controlled by IR can be under control of this board.

I have designed PCB board by eagle and it will be arrived in couple of weeks. Then I will start soldering...