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[[!meta title="TelePyro"]]
# TelePyro
This is an 8-channel pyro expansion board for [TeleMetrum](../TeleMetrum/).
<a href="v0.1/telepyro-top.jpg"> <img src="v0.1/telepyro-top-thumb.jpg"></a>
<a href="v0.1/telepyro-bottom.jpg"> <img src="v0.1/telepyro-bottom-thumb.jpg"></a>
## 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 [TeleMetrum](../TeleMetrum/) v0.2 or later, as v0.1 does not
have the required companion board interface
* Connections for 8 distinct igniter firing channels provided
* Supports use of separate battery for ejection charges
### Developer View ###
* Hardware Features
* [Atmel ATmega32U4](http://www.atmel.com/dyn/products/product_card.asp?category_id=163&family_id=607&subfamily_id=760&part_id=4317) Microcontroller
* 32k Flash
* 2.5k + 832 bytes SRAM
* 1k EEPROM
* 12-channel 10-bit ADC
* SPI target interface
* USB interface which can be used for programming
* In-system programming interface
* Honeywell HMC5843 3-axis magnetic flux sensor
* Software Features (planned)
* programmed in C using gcc-avr
* 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)
## Artifacts ##
A schematic and PC board design exist on [git.gag.com](http://git.gag.com)
in the project [hw/telepyro](http://git.gag.com/?p=hw/telepyro;a=summary),
but no prototypes have been built yet.
## Future Plans ##
As of late September 2011, v0.1 prototype boards are loaded and under test.
Most prototypes of TelePyro were lost in the
[Black Forest Fire](http://www.gag.com/blackforestfire.html),
we hope to get back to this project someday.
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