From ea237970c53cc6523e0ba872f636235cc103eccf Mon Sep 17 00:00:00 2001 From: Bdale Garbee Date: Thu, 1 Jan 2009 09:37:25 -0700 Subject: restructure --- TeleMetrum/index.mdwn | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 TeleMetrum/index.mdwn (limited to 'TeleMetrum') diff --git a/TeleMetrum/index.mdwn b/TeleMetrum/index.mdwn new file mode 100644 index 0000000..8d2a4e5 --- /dev/null +++ b/TeleMetrum/index.mdwn @@ -0,0 +1,32 @@ +# TeleMetrum + +

+A quick update as of 25 December 2008. +The circuit board artwork is out for fab! +

+

+A quick update as of 16 December 2008. +The ARM7-based 'AltusMetrum' 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. +We have a complete schematic and a first pass PCB layout that is currently +under review and improvement prior to sending out for raw boards. +

+

+See the hw/telemetrum tree in our +public git repository +for the current state of the gEDA design files. +

+

+We hope to be turning on boards and writing firmware over the +Christmas / New Years holiday season. +Stay tuned! +

+
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