Re: Connection limitations on the 50g

On Jul 18, 2:11 pm, "Eric Rechlin" <e...@xxxxxxxxxx> wrote:

The 50g was not designed to act as a USB host...

I would also add that a USB host may be expected to provide power (5V,
2mA - 500mA). I do not think the 50g was designed with that in mind.
(I'll have to butcher a cable to see if I can get any power out of the
USB port).

If you want to connect to other devices, use the RS-232 serial port.  Most
serial devices that you would be likely to communicate with have their
protocol documented, so it should be as simple as reading the documentation
and using the XMIT and SRECV commands appropriately.

I have had lots of success with my 48GX and 50g serial
communications. However I have had issues too. E.g. I was unable to
control the X10 Firecracker with my 50g because it does not provide
RTS/CTS lines or the commands to control them. X10 uses RTS/CTS
toggling to send bits (this was done to allow the Firecracker to be an
inline serial device). I was however able to control it with a 41CX,
so that became my hand held home automation platform. Details:
http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/articles.cgi?read=763

The original poster stated interest in "a USB ethernet adapter".
There are serial to Ethernet adapters. The are called serial or
terminal servers. You can get a used uni-port serial server on eBay
for $10 (I see one now for $8).

To Eric,

Thanks for my 50g serial cable, it was a badly needed accessory. Now,
can you make me a Bluetooth device? I have battery powered BT dongles
now, but its a bit cumbersome to attach to a long serial cable. I'm
thinking something small that sticks out of the serial port and
possibly gets power from the USB port, or uses a small battery.
Thanks.
.

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