* Recording altimeter for model rocketry
* Supports dual deployment (can fire 2 ejection charges)
* 70cm ham-band transceiver for telemetry downlink
-* Primary operations based on pressure sensor
+* Barometric pressure sensor good to 45k feet MSL
* Temperature sensor
* 1-axis high-g accelerometer for motor characterization
* On-board non-volatile memory for flight data storage
* 32k Flash
* 4k RAM
* USB 2.0
- * 12-bit analog input (11 bits available due to single-ended sensors)
+ * 6 12-bit analog inputs (11 bits with single-ended sensors)
+ * 2 channels of serial I/O
* digital I/O
- * async serial I/O
* [Microchip 25LC1024](http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en520389) CMOS serial EEPROM
* 128k x 8
* SPI interface
* Runs from on-chip flash, uses on-chip RAM, stores flight data to
serial EEPROM chip
* USB serial emulation for "console" interface
- * USB mass storage emulation for data recovery
* Tools Used
* [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
* [SDCC](http://sdcc.sourceforge.net/) compiler and source debugger
- * [FreeRTOS](http://www.freertos.org/) kernel
* Licenses
* 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.
+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 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!
+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.
projects / web / altusmetrum / blobdiff