Re: [time-nuts] DeLorme Tripmate GPS receiver

2014-12-23 Thread Mike Cook
Le 23 déc. 2014 à 01:41, Ryan Stasel rsta...@uoregon.edu a écrit : Ed, Not 100% sure this is the same model, but it would seem to indicate there's a PPS signal on the DCD pin (from the gpsd-users list circa 2007): http://marc.info/?l=gpsd-usersm=118340900010559w=2 Have a 'scope to

Re: [time-nuts] DeLorme Tripmate GPS receiver

2014-12-22 Thread ed breya
One thing I want to clarify - it is not a Jupiter GPS module - it just uses the chipset, presumably hooked up as in the application info. The board is proprietary, and there seems to be no standard electrical or operational interface as would be expected in an OEM GPS module. So, the only way

Re: [time-nuts] DeLorme Tripmate GPS receiver

2014-12-22 Thread Ryan Stasel
Ed, Not 100% sure this is the same model, but it would seem to indicate there's a PPS signal on the DCD pin (from the gpsd-users list circa 2007): http://marc.info/?l=gpsd-usersm=118340900010559w=2 Have a 'scope to check what that pin looks like? -Ryan Stasel On Dec 21, 2014, at 23:07 , ed

Re: [time-nuts] DeLorme Tripmate GPS receiver

2014-12-21 Thread ed breya
I opened it up and found a 4 by AA cell battery holder for power, and a single module that looks pretty proprietary. One side of the module has a patch antenna, and the other has the brain. I assume there's an RF board in between, but cannot open it further without possible damage - the

Re: [time-nuts] DeLorme Tripmate GPS receiver

2014-12-21 Thread ed breya
I peeled open the shield can without too much deformation, so it can be restored. I found that it's a single board, with the DSP on one side, and the RF section on the other. It is a Rockwell chipset, with 11577-11 DSP, and 6732-13 RF. On searching I found that this seems to be called their

[time-nuts] DeLorme Tripmate GPS receiver

2014-12-20 Thread ed breya
I just picked up an old DeLorme Tripmate GPS receiver for cheap, and am wondering if it can be used for getting a 1 PPS signal. I looked online a little and found it's pretty common, but didn't see anything about getting deep into the guts. Most hacks seemed to be about getting it powered up,