1 [[!meta title="TeleDongle"]]
4 This is an RF interface designed primarily for use as a ground station
5 interacting with Altus Metrum flight computers and trackers on board high
6 power model rockets. The computer interface is USB. RF filter components are
7 by default set for use in the vicinity of 435 Mhz, but can be altered to
8 support other frequency ranges.
10 TeleDongle is now at version v3.0, with 5+ dB better receiver sensitivity
11 than our previous models!
13 For the latest TeleDongle firmware and related software, please
14 visit the [AltOS](../AltOS) page on this site.
16 <a href="v3.0/td-v3.0-front.jpg"> <img src="v3.0/td-v3.0-front-thumb.jpg"></a>
17 <a href="v3.0/td-v3.0-back.jpg"> <img src="v3.0/td-v3.0-back-thumb.jpg"></a>
18 <a href="v3.0/td-v3.0-boxed.jpg"> <img src="v3.0/td-v3.0-boxed-thumb.jpg"></a>
24 * primary ground station for use with other Altus Metrum products
25 * 70cm ham-band transceiver
26 * receives data using 38k4 GFSK with forward error correction
27 * USB interface for power, configuration, and data interface
28 * 4 pin MicroMaTch connector for initial programming and debug
29 * application code upgradeable over USB
30 * 1.1 x 1.1 inch 2-layer board, fits inexpensive Hammond 1551 plastic enclosure
32 ### Developer View ###
35 * [NXP LPC11U14](http://www.nxp.com/products/microcontrollers/cortex_m0_m0/LPC11U14FHI33.html) System-on-Chip
40 * 8 12-bit analog inputs
41 * I2C, SPI, async serial
43 * TI [CC1200](http://www.ti.com/product/cc1200) Low Power, High Performance RF Transceiver
45 * Written mostly in C with some ARM assembler
46 * Runs from on-chip flash, uses on-chip RAM
47 * USB serial emulation for data interface
49 * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
50 * [GCC](http://gcc.gnu.org/) compiler and source debugger
52 * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
53 * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
57 There is a single manual for most Altus Metrum products,
58 which is available in [html](../AltOS/doc/altusmetrum.html) and
59 [pdf](../AltOS/doc/altusmetrum.pdf) formats.
61 The hardware design current gEDA files are available from
62 [git.gag.com](http://git.gag.com) in the project
63 [hw/teledongle](http://git.gag.com/?p=hw/teledongle;a=summary).
65 For those who don't have ready access to the gEDA suite, here are pdf snapshots
66 of files in more easily readable form.
68 * [schematic](v3.0/teledongle-sch.pdf)
69 * [pcb artwork](v3.0/teledongle-pcb.pdf)
70 * [bill of materials](v3.0/partslist.csv)
72 ## [History of TeleDongle](history) ##
76 None! We're very happy with the TeleDongle v3.0 design.