[wagonman76]

Well it worked great all the way home. 3 individual "trips" and no problems.

Got home and tested it with my own multimeter, 5.03 in the car.

Brought it in and plugged it into the computer here with my own cable and it would only run on USB about 10% of the time, the rest of the time it would lock up and go screwy. Voltage was 4.98 sometimes and 4.88 other times here at home. Same erratic flashing light on the board.

One thing I found was that nearly every time I tested the voltage on USB power, it would seem to clear the program, and the screen would do nothing but flash blank. It wouldnt even work in the car. I would have to reflash it to make it work. I tried "verify" and it just repeated back to me the size of the sketch. So I finally reflashed it and didnt measure voltage, and it seems to work ok in the car. Hopefully tomorrow it works better going to work and back.

In the program I did change the default variables to my own, so I wont have to change them every time it clears or resets.

I checked the voltage from 5V to both ground pins and got the same thing. Also tested the voltage at the power jumper pin and it matches that at the 5V pin.

So there is a power "brownout" issue with these boards?

Checking it for hairline cracks is a good idea too, but nearly everything on this board is too small for me to solder. Should have built the kit I guess.