3 This is a recording dual-deploy altimeter for high power model rocketry
4 with integrated GPS and telemetry link.
6 For the latest TeleMetrum firmware and related ground station software, please
7 visit the [AltOS](../AltOS) page on this site.
9 These are photos of the previous production version (we haven't taken good
10 pictures of v1.2 yet):
12 <a href="v1.1/telemetrum-v1.1-thside.jpg"> <img src="v1.1/telemetrum-v1.1-thside-thumb.jpg"></a>
13 <a href="v1.1/telemetrum-v1.1-smtside.jpg"> <img src="v1.1/telemetrum-v1.1-smtside-thumb.jpg"></a>
19 * Recording altimeter for model rocketry
20 * Supports dual deployment (can fire 2 ejection charges)
21 * 70cm ham-band transceiver for telemetry downlink
22 * Barometric pressure sensor good to 45k feet MSL
23 * 1-axis 70-g accelerometer for motor characterization
24 * On-board, integrated GPS receiver
25 * On-board non-volatile memory for flight data storage
26 * USB for power, configuration, and data recovery
27 * Integrated support for LiPo rechargeable batteries
28 * Uses LiPo to fire e-matches, can be factory modified to support separate pyro battery
29 * 2.75 x 1 inch board designed to fit inside 29mm airframe coupler tube
31 ### Developer View ###
34 * [TI CC1111F32](http://focus.ti.com/docs/prod/folders/print/cc1111f32.html) Low Power RF System-on-Chip
35 * Sub-1Ghz transceiver
40 * 6 12-bit analog inputs (11 bits with single-ended sensors)
41 * 2 channels of serial I/O
43 * [Winbond W25Q16](http://www.winbond.com/NR/exeres/A3D21C82-A0B6-4586-A770-2F0883A805FF.htm) serial flash memory
46 * [SkyTraq](http://www.skytraq.com.tw/) Venus634FLPx GPS receiver
47 * on-board [Taoglas AP.17A.01](http://www.taoglas.com/antennas/GPS_Antennas/Internal_GPS_-_Active_Patch_Modules/)
48 single-stage active patch antenna
49 * U.FL connector with 3.3V DC can be re-purposed for optional external amplified antennas
50 * async serial interface
51 * [Freescale MP3H6115A](http://www.freescale.com/webapp/search.partparamdetail.framework?PART_NUMBER=MP3H6115A6U) pressure sensor
52 * [Analog Devices ADXL78](http://www.analog.com/en/mems-sensors/inertial-sensors/adxl78/products/product.html) 70g accelerometer.
54 * Written mostly in C with some 8051 assembler
55 * Runs from on-chip flash, uses on-chip RAM, stores flight data to
57 * USB serial emulation for "console" interface
59 * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
60 * [SDCC](http://sdcc.sourceforge.net/) compiler and source debugger
62 * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
63 * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
65 ## [Production History](../production) ##
67 ## [Flight Logs](flightlogs) ##
71 There are a number of TeleMetrum customer and other
72 [videos on YouTube](http://www.youtube.com/results?search_query=telemetrum)
76 There is a single manual for TeleMetrum and all other Altus Metrum products,
77 which is available in [html](../AltOS/doc/altusmetrum.html) and
78 [pdf](../AltOS/doc/altusmetrum.pdf) formats.
80 The hardware design current gEDA files are available from
81 [git.gag.com](http://git.gag.com) in the project
82 [hw/telemetrum](http://git.gag.com/?p=hw/telemetrum;a=summary).
84 Work on the next version proceeds on the master branch, with occasional
85 temporary branches created when Bdale is making some major / speculative
86 change. Branched with names like 'v1.2' document what we're actually flying
87 on the respective PCB revisions.
89 For those who don't have ready access to the gEDA suite, here are pdf snapshots
90 of the files for Production PCB version 1.2 in more easily readable form.
92 * [schematic](v1.2/telemetrum.pdf)
93 * [pcb artwork](v1.2/telemetrum.pcb.pdf)
94 * [bill of materials](v1.2/partslist.csv)
96 Rockets we know of flying with TeleMetrum boards have exceeded 50g acceleration,
97 been well above Mach 1, and reached altitudes
98 greater than 25k feet AGL with great results. Keith's second generation
99 ground station program called AltosUI works on Windows, Mac, and Linux systems
100 and logs telemetry to disk, displays current and max values for key parameters
101 during flight, includes voice synthesis during the flight so that
102 our eyes can stay on the rockets, and even includes live display of rocket
103 position over moving maps! After flight, altosui can extract the
104 complete flight log from TeleMetrum, can display plots of the data from either
105 the telemetry received by radio or the onboard flight log, can output a kml
106 file for use with [Google Earth](http://earth.google.com), and can also
107 output all the flight data as a csv file for easy import to spreadsheet
108 programs or other analysis tools allowing you to perform whatever
109 custom analysis you can envision! More details on the software,
110 including full source code and pre-built packages
111 can be found on the [AltOS](../AltOS) page on this site. Feel free to
112 download the software and try it before purchasing our hardware!
116 TeleMetrum v1.2 is now available for sale. Eventually we'll run out of v1.2
117 boards, and by then no dobut we'll have found more things to tweak...
119 ## [History of TeleMetrum](history) ##