Re: [tracker2] Re: 5v and LaCrosse 2310
- I wish I could find the cable I built for testing so I could confirm
this.. the pinout I worked from is this:
RS232 Wire Colour Function
Pin 2 RXD Orange wire Receive data from WS2300
Pin 3 TXD Green wire Transmit data to WS2300
Pin 4 DTR White wire Signal from PC to WS2300
Pin 7 RTS Blue wire Signal from PC to WS2300
There is no ground connection.
DTR and RTS are not used for handshake. They are steady DTR at negative
voltage and RTS at positive voltage.
Since there is no ground it seems that the WS2300 uses the DTR and RTS
to define high and low. DTR must be low and RTS must be high for the
communication to work.
So from that it sounds like pin 7 (RTS) needs a high level, and the best
place to get that is going to be pin 4 (GPS power out).
Mike Wren wrote:
> Based on a previous email, I was under the impression that pin 4 was
> the common ground.
> You're saying pin 7 from the WS2310 to pin 4 on the tracker (which is
> jumpered internally for ground)?
> --- In firstname.lastname@example.org <mailto:tracker2%40yahoogroups.com>,
> Scott Miller <scott@...> wrote:
> > I just heard from someone else that got it working, after they
> > the weather station and tracker to a common ground. Do you have pin 7
> > of the weather station going to pin 4 on the tracker? That should give
> > it a high reference.