3 This is an RF interface designed primarily for use as a ground station
4 interacting with Altus Metrum flight computers and trackers on board high
5 power model rockets. The computer interface is USB. RF filter components are
6 by default set for use in the vicinity of 435 Mhz, but can be altered to
7 support other frequency ranges.
9 TeleDongle is now at version v3.0, with 5+ dB better receiver sensitivity
10 than our previous models!
12 For the latest TeleDongle firmware and related software, please
13 visit the [AltOS](../AltOS) page on this site.
15 <img src="v0.2/cimg5556-small.jpg">
21 * primary ground station for use with other Altus Metrum products
22 * 70cm ham-band transceiver
23 * receives data using 38k4 GFSK with forward error correction
24 * USB interface for power, configuration, and data interface
25 * 4 pin MicroMaTch connector for initial programming and debug
26 * application code upgradeable over USB
27 * 1.1 x 1.1 inch 2-layer board, fits inexpensive Hammond 1551 plastic enclosure
29 ### Developer View ###
32 * [NXP LPC11U14](http://www.nxp.com/products/microcontrollers/cortex_m0_m0/LPC11U14FHI33.html) System-on-Chip
37 * 8 12-bit analog inputs
38 * I2C, SPI, async serial
40 * TI [CC1200](http://www.ti.com/product/cc1200) Low Power, High Performance RF Transceiver
42 * Written mostly in C with some ARM assembler
43 * Runs from on-chip flash, uses on-chip RAM
44 * USB serial emulation for data interface
46 * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
47 * [GCC](http://gcc.gnu.org/) compiler and source debugger
49 * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
50 * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
54 There is a single manual for most Altus Metrum products,
55 which is available in [html](../AltOS/doc/altusmetrum.html) and
56 [pdf](../AltOS/doc/altusmetrum.pdf) formats.
58 The hardware design current gEDA files are available from
59 [git.gag.com](http://git.gag.com) in the project
60 [hw/teledongle](http://git.gag.com/?p=hw/teledongle;a=summary).
62 For those who don't have ready access to the gEDA suite, here are pdf snapshots
63 of files in more easily readable form.
65 * [schematic](v3.0/teledongle.pdf)
66 * [pcb artwork](v3.0/teledongle.pcb.pdf)
67 * [bill of materials](v3.0/partslist.csv)
69 ## [History of TeleDongle](history) ##
73 None! We're very happy with the TeleDongle v3.0 design.