[Coco] CoCo Wireless RS-232 Pak
jdaggett at gate.net
jdaggett at gate.net
Thu Feb 26 08:40:28 EST 2009
On 25 Feb 2009 at 23:04, Darren A wrote:
> The firmware in the BT module of Roger's wireless pak implements the
> Serial Port Profile (SPP) for bluetooth. This profile provides a
> simple RS-232 cable replacement mechanism. BT mice and keyboards are
> not serial port devices. They use the Human Interface Device (HID)
> profile which is not supported by the firmware.
>
> Darren
Very well stated. You have to be sure of the specifications for the device
you purchase. These devices are fantastic for replacing long wires for
RS232 and other similar protocols. They allow the use of such serial
protocols at distances that were never dreamed of 40years ago.
If your RS232C cable is a low capacitance type cable, distances of
upwards to 1000 feet can be used. tyically the limit is 50 to 100 feet before
noise immunity degrades the signal. These new BT devices that emmulate
a serial cable now provide the distance without the hassle of stringing
wires.
james
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