This is a high-end recording dual-deploy altimeter for high power model
rocketry with integrated GPS and telemetry link. The features included
make TeleMega the ideal choice for complex projects including sustainers
-on multi-stage projects.
+on multi-stage projects. In particular, pyro events are configurable and
+can be based on time and various flight events and status, including angle
+from vertical.
For the latest TeleMega firmware and related ground station software, please
-visit the [AltOS](../AltOS) page on this site.
+visit the [AltOS](../AltOS) page on this site. TeleMega requires AltOS
+version 1.3 or later.
-These are photos of the first v0.1 prototype:
+These are photos of the current production version 1.0:
-<a href="v0.1/telemega-v0.1-top.jpg"> <img src="v0.1/telemega-v0.1-top-thumb.jpg"></a>
-<a href="v0.1/telemega-v0.1-bottom.jpg"> <img src="v0.1/telemega-v0.1-bottom-thumb.jpg"></a>
+<a href="v1.0/telemega-v1.0-top.jpg"> <img src="v1.0/telemega-v1.0-top-thumb.jpg"></a>
+<a href="v1.0/telemega-v1.0-bottom.jpg"> <img src="v1.0/telemega-v1.0-bottom-thumb.jpg"></a>
## Features ##
### User View ###
* Recording altimeter for high power model rocketry
-* Supports dual deployment and additional pyro events (can fire 6 charges)
+* Supports dual deployment and 4 additional pyro events.
+ Pyro events are
+ configurable and can be based on time and various flight events and status,
+ including angle from vertical (for safety in staging and air start flights).
* 70cm ham-band transceiver for telemetry downlink
* Barometric pressure sensor good to 100k feet MSL
* 1-axis 105-g accelerometer for motor characterization
-* 3-axis 18-g accelerometer for gyro calibration
+* 3-axis 16-g accelerometer for gyro calibration
* 3-axis 2000 deg/sec gyros
* 3-axis magnetic sensor
* On-board, integrated GPS receiver
### Developer View ###
-* Hardware Features of v0.1
+* Hardware Features of v0.3
* ST Micros [STM32L151](http://www.st.com/internet/mcu/product/248821.jsp) ARM Cortex M3 based Microcontroller
* TI [CC1120](http://www.ti.com/product/cc1120) High Performance RF Transceiver for Narrowband Systems
* 150mA 3.3V LDO regulator
* [Winbond W25Q64CV](http://www.winbond.com/hq/enu/ProductAndSales/ProductLines/FlashMemory/SerialFlash/W25Q64CV.htm) serial flash memory
- * [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
- * U.FL connector with 3.3V DC can be re-purposed for optional external amplified antennas
+ * [u-blox](http://www.u-blox.com/) MAX-7Q GPS receiver
+ * on-board TaoGlas passive patch antenna
* async serial interface
* Measurement Specialties [MS5607](http://www.meas-spec.com/product/t_product.aspx?id=8499) Micro Altimeter Module
* Wide range — 120kPa to 1kPa (approximately -1500m to 31000m)
* High precision — 2.4Pa resolution (approximately 20cm at sea level)
* Factory calibrated.
- * Freescale [MMA655x](http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MMA65xx&fsrch=1&sr=1) Single Axis SPI Intertial Sensor
- * +- 105g or 120g full-scale
+ * Freescale [MMA6555](http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MMA65xx&fsrch=1&sr=1) Single Axis SPI Intertial Sensor
+ * +- 105g full-scale
* on-chip 12-bit digitizer
* Invensense [MPU-6000](http://invensense.com/mems/gyro/mpu6050.html) Six-Axis MEMS Motion Tracking Device
* tri-axis angular rate sensor up to 2000 degrees/second
* tri-axis accelerometer with +- 16g range
* three on-chip ADCs for true simultaneous sampling of all axes
+ * Honeywell HMC5883L 3-axis magnetic (compass) sensor
* Software Features
* Written mostly in C with some ARM assembler
* Runs from on-chip flash, uses on-chip RAM, stores flight data to serial flash
which is available in [html](../AltOS/doc/altusmetrum.html) and
[pdf](../AltOS/doc/altusmetrum.pdf) formats.
+An outline of the board with drill hole locations is available in
+[pdf](../Documents/telemega-outline.pdf] format.
+
The hardware design current gEDA files are available from
[git.gag.com](http://git.gag.com) in the project
[hw/telemega](http://git.gag.com/?p=hw/telemega;a=summary).
-## Future Plans ##
-
-TeleMega v0.1 prototypes are working and flight testing is underway. This
-version was shown publicly at NARCON 2013.
+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:
-Several changes to the hardware to improve performance and reliability
-resulted in a v0.2 prototype version, however feedback from conversations at
-NARCON caused us to sort of "skip" doing much with this version.
+* [schematic](v1.0/telemega-sch.pdf)
+* [pcb artwork](v1.0/telemega-pcb.pdf)
+* [bill of materials](v1.0/partslist.csv)
-As of early May 2013, we're in the midst of building and testing v0.3
-prototypes with an improved pyro control circuit and u-blox GPS
-receiver.
+## Future Plans ##
-We hope to introduce this product sometime in July, 2013, if all goes well.
+Version 1.0 is now available for purchase.