This alarm will wake you up if light from sunrise gets into the LDR but this works best in the summer.

Step 1: Building the Circuit

Ldr->5v

Ldr second pin-> resistor

Resistor and ldr connection->a0

resistor second pin->GND

Step 2: Getting a Speaker

You can use a soaker from a toy, almost any speaker will work just hook it up to pin 13 and ground but if this doesn't work try pin 12.

Here's the code.