Return to the archive index

Re: twiddler size

Looks nice.  It looks like the only line connected are RX, TX, GND and
RTS/CTS.  I've only have a little electronics training, and it confuses me how
RTS and CTS can work on the same line..  Also, IMS, isn't RTS/CTS for hardware
flow control anyway?  1200 can use Xon/Xoff, so you've got it down to 3 pins.
I'm asking this because my HP95LX serial port only has 3 "real" pins: RX,TX
and GND/DTR.

Kevin Wang wrote:

>  From: Adam Wozniak <>
> >I'm working on a PIC based twiddler knock-off...
> >
> >Can anyone help?
>
> I can't help on the physical, but here's something that will help for
> your pic design:
>
> http://reality.sgi.com/kjw_engr/Wearables/SerialKeypad/
>
> It is a serial port powered device, consumes very little power, uses a
> pic16c54.  It has 12 I/O ports, and you have 11 available.  It can be done
> in as few as 4 pins!
>
> Mark, Tim, sorry for not getting it to you earlier; it was done a week
> ago, but I wasn't able to find a scanner until today.
>
>    - Kevin
>
> --
> Subcription/unsubscription/info requests: send e-mail with subject of
> "subscribe", "unsubscribe", or "info" to 
> Wear-Hard Mailing List Archive (searchable): http://wearables.ml.org

--
-LX

--
Subcription/unsubscription/info requests: send e-mail with subject of
"subscribe", "unsubscribe", or "info" to 
Wear-Hard Mailing List Archive (searchable): http://wearables.ml.org

From Wear-Hard Mailing list Archive (WH)
Maintained by R. Paul McCarty

Archive created with babymail