Quote Originally Posted by Joe S. View Post
Boy, that's an incentive killer, where is the fun if we can't slap you around a little . . ?
I....can.....take.....it.....Just.....a.....little .....more.....
Red wire...blue wire...red wire....blue wire....which one?
Been wrong before, I'll be wrong again...most likely within the hour...

I didn't know the 16F628A didn't have an osccal or osctune. The 3 projects I've done so far with it luckily didn't need to be tweaked and worked at 300 baud on the internal oscillator. I'm sure I would've figured it out quick if I had tried 2400 baud or higher. And I somehow got a good bunch of 628A's because these projects have all been working well at all temp's, +100F down to -20F. Does the internal freq change with temp? I'm sure it does. Don't care as long as it keeps working!

But to be sure, a crystal is the way to go...