Help Rqd - Driving 5Volt Relay using two pins

[Squibcakes]

Hi Mel,

You are right in that I should have chosen a relay with a higher coil resistance... and for sure that is what I will do next time.

What is the default start up state of the TRIS registers? Wouldn't they have been designed to go High-Imedance for safety's sake and not pseudo random?

Surely the lab coats at Microchip thought this one through?!!

[Melanie]

The default Startup State of the Registers is in the back of the Datasheet. Yes, TRIS in theory comes up as Inputs, BUT trust nothing and nobody in this business and always design for worst-case. That way you won't crash and burn.