DIY: "minimal arduino"

this circuit is another 'minimal arduino' that has just enough to support download of software, led-13 (usual for diagnostic and testing), a local reset button and an IR (infra red) receiver 3pin molex port.

 

 

to see the circuit in-use (as a volume control controller):

 

www.flickr.com/photos/linux-works/3875427675/

Done