3 This is a recording dual-deploy altimeter for high power model rocketry
4 with integrated GPS and telemetry link.
6 Production units are available from the
7 [Garbee and Garbee](http://auric.gag.com) web
8 store. TeleMetrum starter kits are also available from
9 [Apogee Components](http://www.apogeerockets.com/Altus_Metrum_GPS.asp)
10 and [Australian Rocketry](http://www.ausrocketry.com/shop/index.php?main_page=product_info&cPath=111&products_id=4302).
12 For the latest TeleMetrum firmware and related ground station software, please
13 visit the [AltOS](../AltOS) page on this site.
15 These are photos of the previous production version (we haven't taken good
16 pictures of v1.2 yet):
18 <a href="v1.1/telemetrum-v1.1-thside.jpg"> <img src="v1.1/telemetrum-v1.1-thside-thumb.jpg"></a>
19 <a href="v1.1/telemetrum-v1.1-smtside.jpg"> <img src="v1.1/telemetrum-v1.1-smtside-thumb.jpg"></a>
25 * Recording altimeter for model rocketry
26 * Supports dual deployment (can fire 2 ejection charges)
27 * 70cm ham-band transceiver for telemetry downlink
28 * Barometric pressure sensor good to 45k feet MSL
29 * 1-axis 70-g accelerometer for motor characterization
30 * On-board, integrated GPS receiver
31 * On-board non-volatile memory for flight data storage
32 * USB for power, configuration, and data recovery
33 * Integrated support for LiPo rechargeable batteries
34 * Uses LiPo to fire e-matches, can be factory modified to support separate pyro battery
35 * 2.75 x 1 inch board designed to fit inside 29mm airframe coupler tube
37 ### Developer View ###
40 * [TI CC1111F32](http://focus.ti.com/docs/prod/folders/print/cc1111f32.html) Low Power RF System-on-Chip
41 * Sub-1Ghz transceiver
46 * 6 12-bit analog inputs (11 bits with single-ended sensors)
47 * 2 channels of serial I/O
49 * [Winbond W25Q16](http://www.winbond.com/NR/exeres/A3D21C82-A0B6-4586-A770-2F0883A805FF.htm) serial flash memory
52 * [SkyTraq](http://www.skytraq.com.tw/) Venus634FLPx GPS receiver
53 * on-board [Taoglas AP.17A.01](http://www.taoglas.com/antennas/GPS_Antennas/Internal_GPS_-_Active_Patch_Modules/)
54 single-stage active patch antenna
55 * U.FL connector with 3.3V DC can be re-purposed for optional external amplified antennas
56 * async serial interface
57 * [Freescale MP3H6115A](http://www.freescale.com/webapp/search.partparamdetail.framework?PART_NUMBER=MP3H6115A6U) pressure sensor
58 * [Analog Devices ADXL78](http://www.analog.com/en/mems-sensors/inertial-sensors/adxl78/products/product.html) 70g accelerometer.
60 * Written mostly in C with some 8051 assembler
61 * Runs from on-chip flash, uses on-chip RAM, stores flight data to
63 * USB serial emulation for "console" interface
65 * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
66 * [SDCC](http://sdcc.sourceforge.net/) compiler and source debugger
68 * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
69 * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
71 ## [Production History](../production) ##
73 ## [Flight Logs](flightlogs) ##
77 There is a single manual for TeleMetrum and all other Altus Metrum products,
78 which is available in [html](../AltOS/doc/altusmetrum.html) and
79 [pdf](../AltOS/doc/altusmetrum.pdf) formats.
81 The hardware design current gEDA files are available from
82 [git.gag.com](http://git.gag.com) in the project
83 [hw/telemetrum](http://git.gag.com/?p=hw/telemetrum;a=summary).
85 Work on the next version proceeds on the master branch, with occasional
86 temporary branches created when Bdale is making some major / speculative
87 change. Branched with names like 'v1.2' document what we're actually flying
88 on the respective PCB revisions.
90 For those who don't have ready access to the gEDA suite, here are pdf snapshots
91 of the files for Production PCB version 1.2 in more easily readable form.
93 * [schematic](v1.2/telemetrum.pdf)
94 * [pcb artwork](v1.2/telemetrum.pcb.pdf)
95 * [bill of materials](v1.2/partslist.csv)
97 Rockets we know of flying with TeleMetrum boards have exceeded 50g acceleration,
98 been well above Mach 1, and reached altitudes
99 greater than 25k feet AGL with great results. Keith's second generation
100 ground station program called AltosUI works on Windows, Mac, and Linux systems
101 and logs telemetry to disk, displays current and max values for key parameters
102 during flight, includes voice synthesis during the flight so that
103 our eyes can stay on the rockets, and even includes live display of rocket
104 position over moving maps! After flight, altosui can extract the
105 complete flight log from TeleMetrum, can display plots of the data from either
106 the telemetry received by radio or the onboard flight log, can output a kml
107 file for use with [Google Earth](http://earth.google.com), and can also
108 output all the flight data as a csv file for easy import to spreadsheet
109 programs or other analysis tools allowing you to perform whatever
110 custom analysis you can envision! More details on the software,
111 including full source code and pre-built packages
112 can be found on the [AltOS](../AltOS) page on this site. Feel free to
113 download the software and try it before purchasing our hardware!
117 TeleMetrum v1.2 is now available for sale. Eventually we'll run out of v1.2
118 boards, and by then no dobut we'll have found more things to tweak...
120 ## [History of TeleMetrum](history) ##