I was looking for a way to re-use my stuff to program an ATTiny13, a uC from Atmel.
I founded this tutorial explaining how to use your Arduino UNO as a programmer: http://www.instructables.com/id/Updated-Guide-on-How-to-Program-an-Attiny13-or-13a/
I decided to build a shield in order to facilitate the operations.How I did it
This is a very simple project: I needed less than an hour to finish it.
I just followed all the instructions of the tutorial, but I soldered them on a prototype board.
In order to facilitate the understanding of how I made it, I designed it on Fritzing:
In order to facilitate all the operations, I put in a DIP-8 socket to plug my ATTiny.
When you try to plug your shield on your Arduino, make sure that all the pins are correctly aligned.Burn the bootloader
To use my Arduino as a programmer, I followed all the steps of the tutorial above.
It's very easy and useful.