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diff --git a/TelePyro/index.mdwn b/TelePyro/index.mdwn new file mode 100644 index 0000000..8ff5001 --- /dev/null +++ b/TelePyro/index.mdwn @@ -0,0 +1,47 @@ +# TelePyro + +This is an 8-channel pyro expansion board for [TeleMetrum](../TeleMetrum/). + +## Motivation ## + +It would be nice to support more than the 2 channels of igniter control +included in the stock [TeleMetrum](../TeleMetrum/) design, so that we can +fly more complex projects involving staging, air starts, and backup ejection +charges. + +## Features ## + +### User View ### + +* Small circuit board mounted near [TeleMetrum](../TeleMetrum/) +* Requires rework of [TeleMetrum](../TeleMetrum/) to replace onboard igniter +channels with cable providing access to LiPo power and implementing +I2C protocol. +* Connections for 8 distinct igniter firing channels provided +* Supports use of separate battery for ejection charges + +### Developer View ### + +* [Microchip 16F882](http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en530146) Microcontroller + * 3.5k Flash + * 128 bytes RAM + * I2C target interface + * In-circuit programming interface +* Software Features (planned) + * Written in PIC assembler + * Runs from on-chip flash, uses on-chip RAM +* 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) + +## Problems ## + +* Since we didn't anticipate this design, [TeleMetrum](../TeleMetrum/) needs +minor rework to interface with this board. + +## Artifacts ## + +As of 11 April 2009, an incomplete schematic exists, but nothing is +published yet. |