This came up with the need of having the arduino permanently installed on the robots, I´m tired of having to remove the arduino from one bot to the other, and then rewire everything, and then reupload the code everytime I have a new idea, or everytime I want to show the bot to someone.
I followed the ITP Physical Computing tutorial, and it works like a charm, no I want to try to upload code with the FTDI cable, and If I have success on this I can start making my custom Arduino boards. :D
NOTE: Please don´t follow the foto as it is. A friend told me to power this circuit from the output of the voltage regulator. The way it is now will burn the chip!! Lucky me it doens´t happened! Tomorrow I will update the foto!
A guy at the arduino forum told me to put a 100uf capacitor between pins 7 and 8.
The link below might be of interest:
Burning the bootloader without an external AVR-Writer