+[[!meta title="TeleMega"]]
# TeleMega
This is a high-end recording dual-deploy altimeter for high power model
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.
-These are photos of the first v0.1 prototype:
+These are photos of production version 1.0 .. maybe someday we'll take photos
+of a newer version (?) .. but they look very similar:
-<a href="v0.1/megametrum-v0.1-top.jpg"> <img src="v0.1/megametrum-v0.1-top-thumb.jpg"></a>
-<a href="v0.1/megametrum-v0.1-bottom.jpg"> <img src="v0.1/megametrum-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 ##
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
+* 1-axis 200-g accelerometer for motor characterization
+* 3-axis 16-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
+* Hardware can drive up to 4 RC-style servos
* 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
### Developer View ###
-* Hardware Features of v0.3
+* Hardware Features of v2.0
* 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
+ * TI [CC1200](http://www.ti.com/product/cc1200) 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
- * [u-blox](http://www.u-blox.com/) MAX-7Q GPS receiver
+ * [Winbond W25Q64FV](http://www.winbond.com/hq/product/code-storage-flash-memory/serial-nor-flash/?__locale=en&partNo=W25Q64FV) serial flash memory
+ * [u-blox](http://www.u-blox.com/) MAX-8Q 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 [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
+ * Analog Devices [ADXL375](https://www.analog.com/en/products/adxl375.html) 3-Axis Digital MEMS Accelerometer
+ * +- 200g full-scale
+ * on-chip digitizer
+ * Bosch [BMI088](https://www.bosch-sensortec.com/products/motion-sensors/imus/bmi088/) 6-axis IMU
* 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
+ * tri-axis accelerometer with +- 24g range
+ * Memsic [MMC5983MA](https://www.memsic.com/magnetometer-5) 3-axis magnetometer
* 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
+ * [lepton-eda](https://github.com/lepton-eda/lepton-eda) for schematic capture
+ * [pcb-rnd](http://repo.hu/projects/pcb-rnd/) for 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)
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
+An outline of the board with drill hole locations is available in
+[pdf](../AltOS/doc/telemega-outline.pdf) format.
+
+The current hardware design 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).
For those who don't have ready access to the gEDA suite, here are pdf snapshots
-of the files for Production PCB version 1.2 in more easily readable form.
-
-* [schematic](v1.0/telemega-sch.pdf)
-* [pcb artwork](v1.0/telemega-pcb.pdf)
-* [bill of materials](v1.0/partslist.csv)
-
-## 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.
+of the files for Production PCB version 6.0 in more easily readable form:
-Version 0.3 prototypes were built and working, with an improved pyro control
-circuit and u-blox 6-series GPS receiver. The first test flight of v0.3 was
-on 19 May 2013, and the results looked great! Unfortunately, all prototypes
-were then lost in the fire that destroyed Bdale's house.
+* [schematic](v6.0/telemega-sch.pdf)
+* [pcb artwork](v6.0/telemega-pcb.pdf)
+* [bill of materials](v6.0/partslist.csv)
-Version 0.4 prototypes are built and work great, using the brand-new u-blox
-MAX-7Q GPS receiver.
+## [History of TeleMega](history) ##
-Production orders for v1.0 were placed on 30 October 2013, we hope to have
-product ready to ship in early December!
projects / web / altusmetrum / blobdiff