X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=TelePyro%2Findex.mdwn;h=df10d0a16ef2614ba543892fc6fa5eaf57e456ca;hb=7d5d9d2ea525c82d5e47bc60e5bb84875eec2267;hp=92982b455a585fc18ee005f895588d61b36bca56;hpb=211ebbce3da37c51875024035b350307d5e77939;p=web%2Faltusmetrum
diff --git a/TelePyro/index.mdwn b/TelePyro/index.mdwn
index 92982b4..df10d0a 100644
--- a/TelePyro/index.mdwn
+++ b/TelePyro/index.mdwn
@@ -1,36 +1,42 @@
+[[!meta title="TelePyro"]]
# 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. 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.
+charges.
## Features ##
### User View ###
* Small circuit board mounted near [TeleMetrum](../TeleMetrum/)
-* Requires [TeleMetrum](../TeleMetrum/) v0.2, as v0.1 does not have the
- required companion board interface
+* 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 ###
-* [Atmel ATmega328](http://www.atmel.com/dyn/products/product_card_v2.asp?PN=ATmega328) Microcontroller
- * 32k Flash
- * 2048 bytes SRAM
- * 1024 bytes EEPROM
- * SPI target interface
- * In-circuit programming interface
+* 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)
- * [Arduino](http://arduino.cc/) compatible programming
+ * 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
@@ -40,6 +46,17 @@ just continuity.
## Artifacts ##
-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),
+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 ##
+
+In late September 2011, v0.1 prototype boards were loaded and lightly
+tested. They were never flown. The prototypes of TelePyro were lost in the
+[Black Forest Fire](http://www.gag.com/blackforestfire.html), and have not
+been replaced.
+
+If we ever get back to this project, the first thing we'll want to do is toss
+out the current design and start over, using an ARM Cortex SOC and our "new
+pyro circuit" that completely prevents processor brown-out.
+
## 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. 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.
+charges.
## Features ##
### User View ###
* Small circuit board mounted near [TeleMetrum](../TeleMetrum/)
-* Requires [TeleMetrum](../TeleMetrum/) v0.2, as v0.1 does not have the
- required companion board interface
+* 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 ###
-* [Atmel ATmega328](http://www.atmel.com/dyn/products/product_card_v2.asp?PN=ATmega328) Microcontroller
- * 32k Flash
- * 2048 bytes SRAM
- * 1024 bytes EEPROM
- * SPI target interface
- * In-circuit programming interface
+* 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)
- * [Arduino](http://arduino.cc/) compatible programming
+ * 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
@@ -40,6 +46,17 @@ just continuity.
## Artifacts ##
-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),
+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 ##
+
+In late September 2011, v0.1 prototype boards were loaded and lightly
+tested. They were never flown. The prototypes of TelePyro were lost in the
+[Black Forest Fire](http://www.gag.com/blackforestfire.html), and have not
+been replaced.
+
+If we ever get back to this project, the first thing we'll want to do is toss
+out the current design and start over, using an ARM Cortex SOC and our "new
+pyro circuit" that completely prevents processor brown-out.