3 This is a GPS-based position tracker and logger.
5 TeleGPS is currently in development, with a handful of prototype
6 boards built. Production units will eventually be available from the
7 [Garbee and Garbee](https://shop.gag.com) web
10 For the latest TeleGPS firmware and related ground station software, please
11 visit the [AltOS](../AltOS) page on this site.
13 These are photos of our current prototype version:
15 <a href="v0.3/telegps-top.jpg"> <img src="v0.3/telegps-top-thumb.jpg"></a>
16 <a href="v0.3/telegps-parts.jpg"> <img src="v0.3/telegps-parts-thumb.jpg"></a>
22 * GPS tracker and logger
23 * Offers custom digital telemetry, APRS and direction beacons
24 * High-dynamics GPS receiver for accurate tracking
25 * Uses 3.7V Lithium Polymer battery.
26 * 1.5 x 0.8 inch board designed to fit inside 24mm airframe coupler tube
27 * 2MB on-board data logging flash
28 * Built-in USB connection for configuration, data download and battery charging
30 ### Developer View ###
33 * [NXP LPC11U14](http://www.nxp.com/products/microcontrollers/cortex_m0_m0/LPC11U14FHI33.html) System-on-Chip
38 * 8 12-bit analog inputs
39 * I2C, SPI, async serial
41 * [uBlox Max 7Q](http://www.u-blox.com/en/gps-modules/pvt-modules/max-7.html) GPS receiver
44 * Written mostly in C with some ARM assembler
45 * Runs from on-chip flash, uses on-chip RAM, stores tracking data to
48 * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
49 * [GCC](http://gcc.gnu.org/) compiler and source debugger
51 * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
52 * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
56 There is a single manual for TeleGPS and all other Altus Metrum products,
57 which is available in [html](../AltOS/doc/altusmetrum.html) and
58 [pdf](../AltOS/doc/altusmetrum.pdf) formats.
60 The hardware design files can be found on [git.gag.com](http://git.gag.com)
61 in the project [hw/telegps](http://git.gag.com/?p=hw/telegps;a=summary).
65 The GPS performance of the initial prototypes was disappointing. We're
66 evaluating different GPS antennas and board geometries to resolve that, and
67 expect at least one more prototype version will be required once we choose
68 the optimal combination.