I have the Venus 634 with SMA board ( 4-27-09 ) currently connected
to a logomatic v2 via
GND > GND
3.3V > 3.3V
TX > RX
RX > TX
this all works fine and logs data.
My question is as the power from the logomatic is switched off the
venus board cold starts each time. I believe that if i de solder a
jumper ( not sure if this is the one next to the vbat pin ) and
connect the battery to this pin that it will warm start each time
instead?
Also if the above is correct, is there a permanent 3.3v available from
the logomatic board pins? or should i just feed of the power
connector?
Many Thanks
Dwayne Dibbley:
My question is as the power from the logomatic is switched off the venus board cold starts each time. I believe that if i de solder a jumper (not sure if this is the one next to the vbat pin ) and connect the battery to this pin that it will warm start each time instead?
Yes, that jumper (the unlabeled one) looks like the correct one. Desoldering it and apply battery power (1.5-6V) to JP3, Pin 1 will ensure a "warm" start.
Dwayne Dibbley:
Also if the above is correct, is there a permanent 3.3v available from the logomatic board pins? or should i just feed of the power connector?
When the switch on the Logomatic is turned off, there is no 3.3V available, so you'll need to pull the battery power directly from the battery connector.
Next time, please post links. Making things as easy as possible for people will make them more likely to help you!
http://www.sparkfun.com/products/9133
http://www.sparkfun.com/products/8627
Many thanks Michael for the post tips and the answer to the question.