Power and Heat considerations (enclosures, etc)

[dcb]

I think the extra regulator could compound the resetting on restart problem. The above is a supersized version of what is on the 1.3 boards, which, knock on wood, has seemed pretty solid.

[brucepick]

Sounds good.
Radio Shack, here I come.

[brucepick]

Issue resolved.

Cause: faulty 4-pin computer connector that I put in, to give a way to unplug the Guino. Not the tiny ones for floppy drive, the larger ones that powered hard drives and plenty other stuff 'till the SATA drives came out.

I never could determine for certain if it was the male or female connector, or was it the pin/tube fit or the crimping of the wire to the connector contact. But I did determine the +12V wire passing thru the connector was intermittent.

Cure:
Severed the wires on either side of the connector. Inserted 8-10" of new wire in line. Twisted bared leads, soldered, then covered with heat shrink tubing and shrunk it. Seems to be fine now. I hope I didn't jinx it by saying so.

I got the cap and diode from Radio Shack but didn't bother putting them in. I think I'll return them. This fixit job was enough of a PITA as it was, without opening up the project box that holds the existing 8 Ohm resistor and redoing all that. It was worth it though.