Production units are available from the
[Garbee and Garbee](http://auric.gag.com) web
-store. TeleMetrum starter kits are also now available from
-[Apogee Components](http://www.apogeerockets.com/Altus_Metrum_GPS.asp).
+store. TeleMetrum starter kits are also available from
+[Apogee Components](http://www.apogeerockets.com/Altus_Metrum_GPS.asp)
+and [Australian Rocketry](http://www.ausrocketry.com/shop/index.php?main_page=product_info&cPath=111&products_id=4302).
-These are photos of our current production version, which includes an
-integrated GPS receiver with active patch antenna:
+For the latest TeleMetrum firmware and related ground station software, please
+visit the [AltOS](../AltOS) page on this site.
-<a href="v1.0/cimg5972-crop.jpg"> <img src="v1.0/cimg5972-thumb.jpg"></a>
-<a href="v1.0/cimg5974-crop.jpg"> <img src="v1.0/cimg5974-thumb.jpg"></a>
+These are photos of our current production version:
-## Motivation ##
-
-Bdale and Keith both own
-[BeeLine](http://www.bigredbee.com/BeeLine.htm)
-trackers from
-[Big Red Bee](http://www.bigredbee.com), and are pretty happy with them.
-They use a PIC processor and a TI CC1050 transmitter chip, and
-operate in the ham radio 70cm band.
-
-One weekend while attending a conference together, we got to wondering if
-we couldn't adapt one to use as a downlink for the
-[AltusMetrum](../AltusMetrum/) altimeter board in addition to direction
-finding after flight. That caused us to start thinking about other things
-in the design we might want to tweak, and before long we were working on the
-design of a new tracker board derived from the BeeLine design.
-Another friend at the same conference showed us a board he was working on
-using a different part in the same TI series, that integrated a transceiver
-and CPU on the same chip.
-It didn't take us long to realize that with such a part we could combine and
-simplify things by building a new altimeter with integrated RF link! And
-after gaining some experience in 2009 with a first version, we realized we
-always want GPS on board, which lead to our current second generation boards.
+<a href="v1.1/telemetrum-v1.1-thside.jpg"> <img src="v1.1/telemetrum-v1.1-thside-thumb.jpg"></a>
+<a href="v1.1/telemetrum-v1.1-smtside.jpg"> <img src="v1.1/telemetrum-v1.1-smtside-thumb.jpg"></a>
## Features ##
* On-board non-volatile memory for flight data storage
* USB for power, configuration, and data recovery
* Integrated support for LiPo rechargeable batteries
-* Uses LiPo to fire e-matches, optional support for separate pyro battery
+* Uses LiPo to fire e-matches, can be factory modified to support separate pyro battery
* 2.75 x 1 inch board designed to fit inside 29mm airframe coupler tube
### Developer View ###
* 6 12-bit analog inputs (11 bits with single-ended sensors)
* 2 channels of serial I/O
* digital I/O
- * [Atmel AT45DB081D](http://www.atmel.com/dyn/products/product_card.asp?part_id=3819) DataFlash memory
- * 1M x 8
- * 256 byte page size
+ * [Winbond W25Q16](http://www.winbond.com/NR/exeres/A3D21C82-A0B6-4586-A770-2F0883A805FF.htm) serial flash memory
+ * 2M x 8
* SPI interface
- * other parts in this Atmel DataFlash series can optionally be used
* [SkyTraq](http://www.skytraq.com.tw/) Venus634FLPx GPS receiver
* on-board [Taoglas AP.17A.01](http://www.taoglas.com/antennas/GPS_Antennas/Internal_GPS_-_Active_Patch_Modules/)
single-stage active patch antenna
## Artifacts ##
-The user manual for TeleMetrum is available in
-[html](doc/telemetrum-doc.html) and [pdf](doc/telemetrum-doc.pdf)
-formats.
+There is a single manual for TeleMetrum and all other Altus Metrum products,
+which is available in [html](../AltOS/doc/altusmetrum.html) and
+[pdf](../AltOS/doc/altusmetrum.pdf) formats.
The hardware design current gEDA files are available from
[git.gag.com](http://git.gag.com) in the project
Work on the next version proceeds on the master branch, with occasional
temporary branches created when Bdale is making some major / speculative
-change. The 'v0.2' and 'v0.1' branches document what we're actually flying
-right now on the two respective PCB revisions. The 'ground' branch has a
-cut-down schematic used to generate the BOM for partially loading v0.1 boards
-to used on the ground. We call the on-the-ground version 'TeleDongle'.
+change. Branched with names like 'v0.2' document what we're actually flying
+on the respective PCB revisions. The 'ground' branch has a cut-down schematic
+used to generate the BOM for partially loading v0.1 boards to used on the
+ground. We call the on-the-ground version '[TeleDongle](../TeleDongle)', and
+newer versions have their own PCB design.
For those who don't have ready access to the gEDA suite, here are pdf snapshots
-of the files for Production PCB version 1.0 in more easily readable form.
-
-* [schematic](v1.0/telemetrum.pdf)
-* [pcb artwork](v1.0/telemetrum.pcb.pdf)
-* [bill of materials](v1.0/partslist.csv)
-
-Our [AltOS](../AltOS) firmware works well enough that we now routinely fly
-TeleMetrum with no backup. Rockets with v0.1 boards have exceeded 50g
-acceleration, been above Mach 1, and reached altitudes greater
-than 12k feet AGL with great results. Keith's ground station program
-called ao-view logs telemetry to disk, displays current and max values for
-key parameters during flight, and even includes voice synthesis
-during the flight so that our eyes can stay on the rockets! We have post
-flight analysis software that makes it easy to extract data from the board,
-analyze it, and even generate KML files for viewing flights in GoogleEarth!
-More details on the software, including full source code and pre-built packages
-can be found on the [AltOS](../AltOS) page on this site.
+of the files for Production PCB version 1.1 in more easily readable form.
+
+* [schematic](v1.1/telemetrum.pdf)
+* [pcb artwork](v1.1/telemetrum.pcb.pdf)
+* [bill of materials](v1.1/partslist.csv)
+
+Rockets we know of flying with TeleMetrum boards have exceeded 50g acceleration,
+been well above Mach 1, and reached altitudes
+greater than 25k feet AGL with great results. Keith's second generation
+ground station program called AltosUI works on Windows, Mac, and Linux systems
+and logs telemetry to disk, displays current and max values for key parameters
+during flight, includes voice synthesis during the flight so that
+our eyes can stay on the rockets, and even includes live display of rocket
+position over moving maps! After flight, altosui can extract the
+complete flight log from TeleMetrum, can display plots of the data from either
+the telemetry received by radio or the onboard flight log, can output a kml
+file for use with [Google Earth](http://earth.google.com), and can also
+output all the flight data as a csv file for easy import to spreadsheet
+programs or other analysis tools allowing you to perform whatever
+custom analysis you can envision! More details on the software,
+including full source code and pre-built packages
+can be found on the [AltOS](../AltOS) page on this site. Feel free to
+download the software and try it before purchasing our hardware!
## Future Plans ##
-As of May 2010, version v1.0 is available for sale from the
-[Garbee and Garbee](http://auric.gag.com) web store.
-
-Because we understand that not everyone uses Linux, development of a new
-cross-platform ground station program written in Java is underway for use with
-[AltOS](../AltOS).
+TeleMetrum v1.1 meets all of our expectations, except for one mis-placed
+trace also present in v1.0. The error makes use of a separate pyro battery
+less trivial than intended. We'll fix that for a future production run.
## Problems ##
place parts! Without an inspection microscope, loading and testing these
boards might be impossible.
-* The addition of on-board GPS in v0.2 means that the total power consumption
+* The addition of on-board GPS in v0.2 and later boards means that the total
+ power consumption
can exceed the rate at which we draw power from the USB interface,
particularly when the GPS is in cold start mode. This means a battery must
be attached during operation, and also that the battery will only charge
## History ##
+### v1.0 ###
+
+These are photos of our third version, which was the basis of our first
+production build. These were sold between April and December 2010, and
+performed very well.
+
+<a href="v1.0/cimg5972-crop.jpg"> <img src="v1.0/cimg5972-thumb.jpg"></a>
+<a href="v1.0/cimg5974-crop.jpg"> <img src="v1.0/cimg5974-thumb.jpg"></a>
+
+The differences between v1.0 and v1.1 were small:
+
+* different flash memory part due to supplier availability problems
+* updated reset circuit to improve reliability at temperature extremes
+* changed the GPS antenna footprint to eliminate the large through-hole
+ originally intended for use with a passive patch
+* irq line eliminated from the companion port
+* an additional resistor divider added to allow sampling the 5V supply
+
+The schematics and PCB artwork for this version are on the v1.0 branch in
+our git repository, here are pdf copies for easy reference:
+
+* [schematic](v1.0/telemetrum.pdf)
+* [pcb artwork](v1.0/telemetrum.pcb.pdf)
+* [bill of materials](v1.0/partslist.csv)
+
+
### v0.2 ###
These are photos of our second version, which included the integrated Venus
<a href="v0.2/cimg5164-cropped.jpg"> <img src="v0.2/cimg5164-thumb.jpg"></a>
<a href="v0.2/cimg5171-cropped.jpg"> <img src="v0.2/cimg5171-thumb.jpg"></a>
-Other than cleaning up the silkscreen, the differences between v0.2 and our
-current v1.0 boards were really quite small:
+Other than cleaning up the silkscreen, the differences between v0.2 and
+v1.0 boards were really quite small:
* 100ma LDO regulator instead of the current 150ma part
* no C38 footprint
projects / web / altusmetrum / blobdiff