* The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
* The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
+## [Production History](production) ##
+
+## [Flight Logs](flightlogs) ##
+
## Problems ##
* The CC1111F32 is a 36-pin QFN package, which necessitates reflow
## Artifacts ##
The hardware design current gEDA files are available from
-[git.gag.com](http://git.gag.com). The 'fab' tag on the master branch reflects
+[git.gag.com](http://git.gag.com) in the project
+[hw/telemetrum](http://git.gag.com/?p=hw/telemetrum;a=summary). The 'fab'
+tag on the master branch reflects
the artwork as sent out for PCB fab. The 'loaded' tag on the master branch
indicates the parts Bdale loads for a functional board, but the schematic
does not reflect the cuts and jumps or added resistors. The 'nextcut' branch
is work towards our next PCB revision. The 'ground' branch has a cut-down
schematic used to generate the BOM for partially loading boards to use in
-the matching TeleTerra ground station design.
-
-Keith has working data collection firmware, however the firmware is under a
-massive, rapid rewrite to eliminate FreeRTOS which is much more generalized
-and capable than we need... and consuming more system resources than we
-can tolerate. As soon as we're over this transition, the sourcecode to the
-firmware and related tools will also be made available.
-
-As of 11 April 2009, the first two boards are fully checked out, we have some
-initial firmware capable of data logging ready, and as soon as we get a good
-day to fly we hope to log our first flight data!
+the matching [TeleTerra](../TeleTerra) ground station design.
+
+For those who don't have ready access to the gEDA suite, here are pdf snapshots
+of files in more easily readable form. The schematic and BOM are from the
+'nextcut' branch as of 20 April 2009, the artwork is of the v0.1 boards:
+
+* [schematic](telemetrum.pdf)
+* [pcb artwork](telemetrum.pcb.pdf)
+* [bill of materials](telemetrum.bom)
+
+
+Keith has working firmware that has now been flown once and successfully
+collected flight data to apogee. The source is also available from
+[git.gag.com](http://git.gag.com) in the project
+[fw/altos](http://git.gag.com/?p=fw/altos;a=summary). This repository includes
+sources for the firmware, ground station program, and related utilities. Note
+that actually building these sources requires a modifified version of sdcc,
+for which we have not published diffs since they are in the process of being
+accepted upstream. Watch this space for more details.
+
+## Future Plans ##
+
+Work is underway on a second revision of TeleMetrum with the following changes:
+
+* stretch board length by 0.25 inches
+* eliminate beeper
+* eliminate temperature sensor, since baro sensor is already compensated
+* eliminate serial port connector
+* integrate MN5010HS GPS receiver and chip antenna on-board
+* change debug connector to 4 pin 1.25mm connector as was used for serial port
+* add 7 pin 1.25mm connector for companion board interface
+* use v_lipo as pyro power, eliminating the huge 1000uF capacitor and instead
+ adding ballast capacitors on the 3.3V rail to prevent brownouts
+
+We hope to build and fly prototypes of this version in late 2009. If it works
+out as well as we hope, this version may be made available in assembled and
+tested form to others in the rocketry hobby who have expressed interest.
projects / web / altusmetrum / blobdiff