Re: ThumbDV and AMBEserver : Couldn't find start byte in serial data


Are you sure the ThumbDV is at /dev/ttyUSB0 ? (ls /dev/ttyUSB?)

Have you tried the python test scripts?

If you have a Windows box handy, you can also test using ThumbTest.exe from

If it is a newly purchased ThumbDV the baud rate is 460800

On Tue, Dec 27, 2016 at 12:14 PM, Santu OTTAVI <t.ottavi@...> wrote:

I'm trying to run AMBEserver with a ThumbDV on a Raspberry Pi 2 running Raspbian (with kernel 4.4.38).

I compiled AMBEserver from DL5DI OpenDV GitHub.

I try to run it with the following command :
  /usr/bin/AMBEserver -d -i /dev/ttyUSB0 -s 460800

It seems to start :
  AMBEserver: Opened serial port /dev/ttyUSB0 at 460800 bps.

Then, after a few seconds, I get the following errors :
  AMBEserver: Couldn't find start byte in serial data
  AMBEserver: error receiving response to reset
  AMBEserver: Could not initialize the DV3K!

ThumbDV is brand new, out-of-the-box. I tried both speeds of 230400 and 460800, with same results.

Please note I didn't follow the installation procedure described here :
(I do not want to use an 'exotic' Linux distribution, I'd like to run it on standard Raspbian).

Thank you in advance. 73 de TK1BI


John D. Hays

PO Box 1223, Edmonds, WA 98020-1223

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