From: Bdale Garbee Date: Sat, 30 Nov 2019 18:22:31 +0000 (-0700) Subject: move TeleMetrum v2.0 info to the history file X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=947e8f63d5e3cb21c2d773412514491daa8c90c2;p=web%2Faltusmetrum move TeleMetrum v2.0 info to the history file --- diff --git a/TeleMetrum/history.mdwn b/TeleMetrum/history.mdwn index c3c0e56..d021378 100644 --- a/TeleMetrum/history.mdwn +++ b/TeleMetrum/history.mdwn @@ -232,3 +232,70 @@ Changes from v1.1 include: theory made it possible for pyro charges to fire at power on. We never saw a problem, but the change was easy and obvious. +## v2.0 ## + + + + +Prototypes of v2.0 were first flown at Airfest 2013, and v2.0 was sold through +fall of 2019. + +Compared with the v1 series, v2 includes a better GPS (uBlox vs +Skytraq), higher power radio (40mW instead of 10mW), wider range and +more precise pressure sensor (100k' MSL vs 45k' MSL), larger on-board +storage (8MB vs 2MB), more precise, wider range accelerometer (12 bits +instead of 10 bits, 105g instead of 70g) and faster processor (32-bit ARM +Cortex M3 instead of 8-bit 8051). + +### User View ### + +* Recording altimeter for model rocketry +* Supports dual deployment (can fire 2 ejection charges) +* 70cm ham-band transceiver for telemetry downlink +* Barometric pressure sensor good to 100k feet MSL +* 1-axis 105-g accelerometer for motor characterization +* 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 +* Uses LiPo to fire e-matches, can be made to support separate pyro battery +* 2.75 x 1 inch board designed to fit inside 29mm airframe coupler tube + +### Developer View ### + +* Hardware Features of v2.0 + * ST Micros [STM32L151](http://www.st.com/internet/mcu/product/248821.js +p) ARM Cortex M3 based Microcontroller + * TI [CC1120](http://www.ti.com/product/cc1120) High Performance RF Tran +sceiver for Narrowband Systems + * 150mA 3.3V LDO regulator + * [Winbond W25Q64CV](http://www.winbond.com/hq/enu/ProductAndSales/Produ +ctLines/FlashMemory/SerialFlash/W25Q64CV.htm) serial flash memory + * [u-blox](http://www.u-blox.com/) MAX-7Q GPS receiver + * on-board passive patch antenna + * async serial interface + * Measurement Specialties [MS5607](http://www.meas-spec.com/product/t_pr +oduct.aspx?id=8499) Micro Altimeter Module + * Wide range — 120kPa to 1kPa (approximately -1500m to 31000m) + * High precision — 2.4Pa resolution (approximately 20cm at sea l +evel) + * Factory calibrated. + * Freescale [MMA6555](http://www.freescale.com/webapp/sps/site/prod_summ +ary.jsp?code=MMA65xx&fsrch=1&sr=1) Single Axis SPI Intertial Sensor + * +- 105g full-scale + * on-chip 12-bit digitizer +* Software Features + * Written mostly in C with some ARM assembler + * Runs from on-chip flash, uses on-chip RAM, stores flight data to seria +l 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 H +ardware License](http://www.tapr.org/ohl.html) + * The software is licensed [GPL version 2](http://www.gnu.org/licenses/o +ld-licenses/gpl-2.0.html) +