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 <a href="v3.0/td-v3.0-front.jpg"> <img src="v3.0/td-v3.0-front-thumb.jpg"></a>
16 <a href="v3.0/td-v3.0-back.jpg"> <img src="v3.0/td-v3.0-back-thumb.jpg"></a>
17 <a href="v3.0/td-v3.0-boxed.jpg"> <img src="v3.0/td-v3.0-boxed-thumb.jpg"></a>
23 * primary ground station for use with other Altus Metrum products
24 * 70cm ham-band transceiver
25 * receives data using 38k4 GFSK with forward error correction
26 * USB interface for power, configuration, and data interface
27 * 4 pin MicroMaTch connector for initial programming and debug
28 * application code upgradeable over USB
29 * 1.1 x 1.1 inch 2-layer board, fits inexpensive Hammond 1551 plastic enclosure
31 ### Developer View ###
34 * [NXP LPC11U14](http://www.nxp.com/products/microcontrollers/cortex_m0_m0/LPC11U14FHI33.html) System-on-Chip
39 * 8 12-bit analog inputs
40 * I2C, SPI, async serial
42 * TI [CC1200](http://www.ti.com/product/cc1200) Low Power, High Performance RF Transceiver
44 * Written mostly in C with some ARM assembler
45 * Runs from on-chip flash, uses on-chip RAM
46 * USB serial emulation for data interface
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 most 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 current gEDA files are available from
61 [git.gag.com](http://git.gag.com) in the project
62 [hw/teledongle](http://git.gag.com/?p=hw/teledongle;a=summary).
64 For those who don't have ready access to the gEDA suite, here are pdf snapshots
65 of files in more easily readable form.
67 * [schematic](v3.0/teledongle-sch.pdf)
68 * [pcb artwork](v3.0/teledongle.pcb.pdf)
69 * [bill of materials](v3.0/partslist.csv)
71 ## [History of TeleDongle](history) ##
75 None! We're very happy with the TeleDongle v3.0 design.