yea thats a thought, I didnt think of useing darrels INT's, I havent messed with them yet. I was waiting till I had a few days to play with them and other bits of his code.

right now I need to use a internal timer INT? I think. Using a 18F4550 chip. so something like timer1 set for every 30 minutes using DT's INT's
I might need a second timer to run a second sub to flash a led, not sure if this can be done so that they dont conflict. will post some code in a bit as example.
Do you think thats the best way though to do the 30 minute timer INT using DT_INTS? trying to KISS! "keep it simple stupid" want program small but stable.