Thread: FS: USB GPS Mouse

Looking for $45.00 plus shipping. Paypal ONLY.

Just clearing out stuff I no longer need/want. Used this for about 3 months, then stored it for about 3 more, now I dont see myself using it anymore, so up it goes. I did just test it out yesterday to make sure it worked, and it works great. Waterproof, magnetic, etc.

Here is a link to where I bought it: https://www.carbotpc.com/store/index...18&prevstart=0

And here is the specs on it:
The GM-307 GPS receiver offers following features:
l Twelve parallel tracking channels
l Fast TTFF and low power consumption
l Compact design suitable for applications requiring small space
l On-board rechargeable battery sustained real-time clock and memory for fast satellite acquisition during power-up
l Supports NMEA-0183 protocol
l Full navigation accuracy achievable with Standard Positioning Service
l Optimized for navigation in urban-canyon environments
l Automatic cold start with no user initialization required

Receiver Operation

Upon power up, after initial self-test has completed, the GM-307 will begin satellite acquisition and tracking process. Under normal open-sky condition, position-fix can be achieved within approximately 45 seconds (within 15 seconds if valid ephemeris data is already collected from recent use). After receiver position has been calculated, valid position, velocity and time information are transmitted through the on board serial interface.

The receiver uses the latest stored position, satellite data, and current RTC time to achieve rapid GPS signal acquisition and fast TTFF. If the receiver is transported over a large distance across the globe, cold-start automatic-locate sequence is invoked. The first position fix may take up to five minutes searching the sky for the GPS signal. The acquisition performance can be improved significantly if the host initializes the receiver with a rough estimate of time and user position.

As soon as GPS signal is acquired and tracked, the GM-307 will transmit valid navigation information through its serial interface. The navigation data contains following information:

l Receiver position in latitude, longitude, and altitude
l Receiver velocity
l Time
l DOP error-magnification factor
l GPS signal tracking status

The GM-307 will perform 3D navigation when four or more satellites are tracked. When three or fewer satellites are tracked, altitude-hold is enabled using the last computed altitude and 2D navigation mode is entered.

With signal blockage or rising and setting of the satellites, where a change in satellite constellation used for position fix occurred, large position error may result. The GM-307 incorporates a proprietary algorithm to compensate the effect of satellite constellation change, and maintains an accurate smooth estimate of the receiver’s position, velocity and heading.

GM-307 Receiver Specification

FEATURES DESCRIPTION
General L1 frequency, C/A code, 12-channel
Sensitivity -165 dBW minimum
Update Rate 1Hz
Accuracy Position: 25m CEP without S/AVelocity: 0.1/sec without S/A
Acquisition Cold start: < 150sec (typical)Warm start: < 45sec (typical)Hot start: < 15sec
Reacquisition <100msec
Dynamics Altitude: -1000m to 18000mVelocity: 500m/secAcceleration: ±4g
Operation Temperature -20oC to +75oC
Storage Temperature -55oC to +90oC
Operating Humidity 5% to 95%
Primary Power + 3.8V ~ 8V DC
Current Consumption 100mA @ 3.3V
Serial Interface USB connector
Protocol Private @ 4800/9600 baud, 8-None-1NMEA-0183 v2.20 @ 4800/9600 baud, 8-None-1
Datum 219 standard datum, default WGS-84
Antenna On-Board Patch Antenna
NMEA Message GGA, GLL, GSA, GSV, RMC, and VTG
Dimension 58.2mm x 39.9mm x 21.5mm