[Robotgroup] Stamp class help
Robo Al
sp-18561884 at ggsys.net
Wed Jan 23 23:02:10 PST 2008
On Wed, 2008-01-23 at 23:11 -0600, Andre Lamothe wrote:
>
> 4. Advanced: the PC's serial port is +5 and GND rs232, all you need to
> hook
> up is TX, RX, and ground to the RS232 9-pin cable coming from the PC,
> now
> look up serial N81 protocal, turn on Hyperterminal on the PC and see
> if you
> can send characters from your board to the PC by "bit banging" the 1's
> and
> 0's with the proper timing.
>
I really liked the project list, quite interesting. Small suggestion
though, I would use a max232 to deal with the serial port connection. It
may actually work wiring it directly, but true RS232 (not many computers
are true RS232 anymore) actually is -12V to +12V.
I always wanted to do the darn clock on XY scope, yet another thing I'll
never have time for :-(
Alberto
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