Re: RS232 and HP49+ or HP50
- From: "Veli-Pekka Nousiainen" <DROP_vpn@xxxxxx>
- Date: Fri, 5 Jan 2007 20:40:47 +0200
<blueelectron9@xxxxxxxxxxx> wrote in message
On 1 Jan 2007 22:51:50 -0800, "Marten" <marten@xxxxxxxxxxx> wrote:
I've searched in this group, but did not find any working solution -
therefore again this question:
Is there now any suitable hardware solution available to connect to
standard RS232 hardware ?
Found an interesting site that may help us DIY's:
It's a 3.3V/5V TTL to RS232 converter that's built-into the cable
head. Requires external power, which can be provided by the battery
output of the HP50G (perhaps with a diode to limit the 6V to 5.3V).
Should solder directly to a clipped store-bought USB cable.
but wasn't that the "problem" with the 48GII's serial port:
external power neede from PC => no good as a host/controller
on as a slave/client of a PC, (which then provides the power)
Anyway a hardware hack is needed...