Re: [ts-7000] Re: TTL 5V to TTL 3.3V level shifter.

[Jim Jackson <>]

On Sun, 22 Mar 2009,  wrote:

>
>> I got the same garbage data problem.
>
> Check the signals with an oscilloscope.
>
> Put the baud rate to something slow, and then
> type in some characters with known patterns,
> eg. 0x55, 0x66, 0x99. Look on an ascii table
> to see which characters generate those patterns
> (I think 'a' or 'A' is 0x55). Anyway, Google

"A" is 0x41 and "a" is 0x61

0x55 is the 21st (upper case) character - "U"
0x66 is the 6th (lower case) character  - "f"
0x99 is not technically ASCII - i.e. only 0x00 to 0x7f.

> will tell you.
>
> Cheers,
> Dave
>
>


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