Re: Revised draft of " [OT?] a SIMPLISTIC RS232 data logger using some flash device --- does it exist commercially?"

"Richard Owlett" <rowlett@xxxxxxxxxxxxx> wrote in message
news:11bm45r5dnt9kc2@xxxxxxxxxxxxxxxxxxxxx
> My thanks to the group for providing useful input in response to a
> poorly defined question.
>
> I had broken my problem statement into three parts.
> 1. what I wanted to accomplish
> 2. a view of possible solution
> 3. thoughts on what hardware might satisfy needs/desires/aesthetics
>
> Unfortunately my original post pureed all into amorphous glob.
> My apologies.
>
> I'll break things down in above groupings.
>
> 1. What am I looking for
> It might be described as "data logger" or a "very large FIFO".
>
> The input will be an RS232 data stream terminated by <CR><LF> of no more
> than 100 bytes at 4800 BAUD occurring once per second.
>
> It shall buffer/store at least 10 mega bytes
>
> The output shall be via USB
> 1. I wish to take advantage of USB speed
> 2. My computer has available USB port(s)
> 3. My computer does *not* have available serial port(s)

<snip>

Easy solution - Buy RS232 to USB converter, log data in HyperTerminal on
laptop :)

I've just finished making something similar to what you describe. It has 2
RS232 ports and a CompactFlash card. The RS232 data is timestamped and
stored on the card in the FAT16 file system. Therefore it can be read with a
USB CompactFlash card reader in Windows.

Do you want to buy this kind of thing or make it yourself? What is the
purpose of collecting the data?

Ross


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