+All hardware designs on this site are licensed under the +[TAPR](http://www.tapr.org/) +[Open Hardware License](http://www.tapr.org/ohl.html), +and all the software is under the +[GNU](http://www.gnu.org/) +[General Public License, version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html) +or compatible licenses. -# AltusMetrum +# [Latest News](News) # +# Hobby Rocketry # + +The motivation for the circuits and software you will find on this site is +our loosely-knit group's shared interest in hobby rocketry. Rather than +try to introduce the hobby to you here, we note that John Coker +has published an excellent +[overview of hobby rocketry](http://www.jcrocket.com/welcome.shtml) +on his web site. Keith has also put together some useful notes about the +process of [certification](http://keithp.com/rockets/certification/) to +fly high power rockets.
-A quick update as of 24 November 2008. -The existing ARM7-based design has been shelved indefinitely. -Working with Keith Packard, I recently embarked on a complete redesign based on the TI cc1111. -We got there by deciding we need a low-power RF beacon for post-landing direction finding, learning -of the existence of this part, then realizing that we could radically simplify things by using it -as the basis for a completely new avionics design. -The cc1111 integrates a full 70cm transceiver, 8051 processing core, and peripherals on one chip. -We add to that a barometric sensor, temperature sensor, accelerometer, eeprom memory, and full LiPo -battery support powered by a USB interface also used for configuration and post-flight data extraction. -It looks like we can get all the features we want on a single board for less than the price of most -commercial altimeter boards, with the only downside being dramatically reduced processing power. -The schematic is under design review now, PCB layout will begin soon, and we hope -to be turning on boards and writing firmware over the Christmas / New Years holiday season. -Stay tuned! -
--Welcome LCA, SCALE, and OLS 2008 attendees! -Thanks for looking, but there's not much here yet... -
+As Bdale and Robert became more experienced in the hobby and started to build +and fly more sophisticated projects, we started to feel limited by the +existing electronics products available. AltusMetrum was Bdale's first +attempt to address this situation with a completely open hardware and software +design... other project have since followed, and it's cool to have help from +various friends! --Information on the OpenAlt model rocketry avionics system coming very soon! -
+# Projects # --Here are photos of the version 0.1 PCB, which has enough issues to not be -worth duplicating. Version 0.2 is coming soon, and will be fully documented -on this site! -
+* [TeleMetrum](TeleMetrum/) +is our current project, a dual-deploy rocketry altimeter with improved sensor +complement and bidirectional RF telemetry link. + +* [AltOS](AltOS/) +is the name of the firmware and related utilities that Keith maintains for +the set of hardware projects here. + +* [TelePyro](TelePyro/) is a planned 8-channel pyro expansion board for +[TeleMetrum](TeleMetrum/). + +* [TeleTerra](TeleTerra) is a planned hand-held ground station for use with +[TeleMetrum](TeleMetrum/). + +* [AltusMetrum](AltusMetrum/) +was Bdale's original project here, a dual-deploy rocketry altimeter. One +prototype was built, but never flown. This project is now indefinitely on hold. + +# Participants # + +* [Bdale Garbee](http://gag.com/~bdale) +* [Keith Packard](http://keithp.com/keithp) + +# Getting Involved # + +If you aren't already playing with model rockets, that's a good place to +start. Finding a local [NAR Section](http://nar.org/NARsect.html) or +[Tripoli](http://tripoli.org) Prefecture is a good idea, since you can +learn a lot and see some great flights by showing up at a club launch. + +As we make progress, you can read about it in our [News](News) feed. +We also hang out on IRC channel #altusmetrum on irc.oftc.net if you have +questions that aren't answered here. -
- 
+And if you just can't wait to show your support for our efforts, visit
+our [Cafe Press Logo Shop](http://cafepress.com/altusmetrum) or our
+[Printfection Logo Shop](http://printfection.com/altusmetrum) (we're trying
+to decide which is better, comments welcome!) and buy a t-shirt or sticker!
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