Hello all,
I’m trying to interface to an EPSON Vacuum Fluorescent display I found on eBay. The documentation from the seller appears to be in order. However, I cannot for the life of me find the library he’s referencing in the sample code (#include <avr/interrupt.h>). If someone could point me in the right direction, I would be much obliged.

<avr/interrupt.h>… right direction

That depends…

If you have some kind of Windows installation, look under the arduino installation tools directory.

On my Windows XP it’s here:


On Linux systems, it depends on where avr-gcc and its friends are. On my system it is here:



If you are using some kind of Macintosh platform, maybe someone else can tell you.



Have you tried it? Is that include line not working? It should just work, and not need to be a library you have to find. Included in avr-gcc.

Wow, okay it's compiling now. Thanks a bunch guys!