# TeleMega
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.
For the latest TeleMega firmware and related ground station software, please
visit the [AltOS](../AltOS) page on this site.
These are photos of the first v0.1 prototype:
## Features ##
### User View ###
* Recording altimeter for high power model rocketry
* Supports dual deployment and additional pyro events (can fire 6 charges)
* 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 2000 deg/sec gyros
* 3-axis magnetic sensor
* On-board, integrated GPS receiver
* On-board non-volatile memory for flight data storage
* USB for power, configuration, and data recovery
* Integrated support for LiPo rechargeable batteries
* User choice of pyro battery configuration, can use primary LiPo or any
customer-chosen separate pyro battery up to 12 volts nominal.
* 3.25 x 1.25 inch board designed to fit inside 38mm airframe coupler tube
### Developer View ###
* Hardware Features of v0.1
* 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
* 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
* 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
* 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
* USB serial emulation for "console" interface
* Tools Used
* [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
* 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)
## Artifacts ##
There is a single manual for TeleMega and most 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
[hw/telemega](http://git.gag.com/?p=hw/telemega;a=summary).
## Future Plans ##
TeleMega v0.1 prototypes worked and were flown on a number of test
flights. This version was shown publicly at NARCON 2013.
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.
Version 0.3 prototypes are built and working, with an improved pyro control
circuit and u-blox GPS receiver.
The first test flight of v0.3 was on 19 May 2013, and the results look
great! We plan more tests at [NSL 2013](http://nsl2013.org), and if all
continues to go well, we hope to introduce this product in July, 2013.
## Features ##
### User View ###
* Recording altimeter for high power model rocketry
* Supports dual deployment and additional pyro events (can fire 6 charges)
* 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 2000 deg/sec gyros
* 3-axis magnetic sensor
* On-board, integrated GPS receiver
* On-board non-volatile memory for flight data storage
* USB for power, configuration, and data recovery
* Integrated support for LiPo rechargeable batteries
* User choice of pyro battery configuration, can use primary LiPo or any
customer-chosen separate pyro battery up to 12 volts nominal.
* 3.25 x 1.25 inch board designed to fit inside 38mm airframe coupler tube
### Developer View ###
* Hardware Features of v0.1
* 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
* 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
* 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
* 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
* USB serial emulation for "console" interface
* Tools Used
* [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
* 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)
## Artifacts ##
There is a single manual for TeleMega and most 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
[hw/telemega](http://git.gag.com/?p=hw/telemega;a=summary).
## Future Plans ##
TeleMega v0.1 prototypes worked and were flown on a number of test
flights. This version was shown publicly at NARCON 2013.
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.
Version 0.3 prototypes are built and working, with an improved pyro control
circuit and u-blox GPS receiver.
The first test flight of v0.3 was on 19 May 2013, and the results look
great! We plan more tests at [NSL 2013](http://nsl2013.org), and if all
continues to go well, we hope to introduce this product in July, 2013.