update the TelePyro information

diff --git a/TelePyro/index.mdwn b/TelePyro/index.mdwn
index a7583e997e8928b7856ed265c0fa67704e4ccae9..95c335eb145b0d83b0ff5e479a2ed72691c4dd2c 100644 (file)
--- a/TelePyro/index.mdwn
+++ b/TelePyro/index.mdwn
@@ -7,16 +7,17 @@ This is an 8-channel pyro expansion board for [TeleMetrum](../TeleMetrum/).
 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.
+charges.  We also want to experiment with better circuits for testing igniter
+continuity, with the hope of being able to measure actual resistance and not
+just continuity.
 
 ## 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.
+* Requires [TeleMetrum](../TeleMetrum/) v0.2, 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
 
@@ -25,7 +26,7 @@ I2C protocol.
 * [Microchip 16F886](http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en530146) Microcontroller
        * 8k Flash
        * 386 bytes RAM
-       * I2C target interface
+       * SPI target interface
        * In-circuit programming interface
 * Software Features (planned)
        * Written in PIC assembler
@@ -36,12 +37,8 @@ I2C protocol.
        * 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.
+A schematic exists 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.