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Old 05-19-2008, 09:11 AM   #89 (permalink)
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Originally Posted by Mr. Cheap View Post
My board also has intermittent serial operation and intermittent loading. This is a serial v1.0 board. I also bought a serial v2.0 board which I will build when I get time. The v2.0 is claimed to have more reliable serial communications.

I forgot the 10k resistors when I built my board. I didn't see the line that said to install them. The board blinked but didn't respond to serial programming.
I'm using the v2.0 serial board and installed all the items, and have no spare parts.

My board is blinking, but won't respond. What did you do to get communications?

DCB: my 7805 is warm because my only input is 11v, so it's working a bit harder to bring it down to 5v. Check out yours when powered up with car power, that will be pushing almost 13v, so yours will get warm, too. I'll have to poke around with my DVM to check the inputs and outputs. But, I think my prob is identical to Mr. Cheap's.

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