Microcontroller programming

it's over a month since i started playing with microcontrollers, and electronic stuff and i can't say the progress is impressive :). 

here is a little video of a finished demonstration, switching a red led on and off using bluetooth connection. 

the application on the laptop connects using bluetooth to the microcontroller and sends the "led1on" and "led1off" commands. the microcontrollre then responds with "led1 is on" and "led1 is off", and the application also benchmarks the time needed to send the command, and receive the response. the thing with a blue led is the LM400 bluetooth module with an unknown AT command set.