easytimer prototypes loaded

[web/altusmetrum] / TeleTerra / index.mdwn

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+[[!meta title="TeleTerra"]]
 # TeleTerra
 
-This is a hand-held ground station for [TeleMetrum](../TeleMetrum/).
+TeleTerra is a hand-held ground station for [TeleMetrum](../TeleMetrum/).  
+
+These are photos of our first cut prototype hardware:
+
+<a href="v0.1/teleterra-v0.1-uiside.jpg"> <img src="v0.1/teleterra-v0.1-uiside-thumb.jpg"></a>
+<a href="v0.1/teleterra-v0.1-smtside.jpg"> <img src="v0.1/teleterra-v0.1-smtside-thumb.jpg"></a>
 
 ## Motivation ##
 
-While it is possible to use a partially (or fully!) loaded 
-[TeleMetrum](../TeleMetrum/) board as a USB to RF interface, we think 
-it would be cool to have a nice hand-held ground station we can use in
-full sunlight on the flight line.  If it can help locate the rocket and is
+While using a [TeleDongle](../TeleDongle/) board as a USB to RF interface to 
+a notebook computer works splendidly, we thought it would be cool to have a 
+nice hand-held ground station we can use in full sunlight on the flight line.
+If it can help locate the rocket and is
 easy to carry during recovery operations, so much the better!
 
 ## Features ##
 
 ### User View ###
 
-* Hand-held unit about the size of a calculator with 4 line 20 character LCD
-* Antenna for the telemetry stream from [TeleMetrum](../TeleMetrum/)
-* Integrated GPS receiver core to allow display of current user position,
-and relative position of GPS-equipped rockets
+* Hand-held unit about the size of a calculator 
+* 4 line by 20 character text LCD
+* "joyswitch" for user input (up, down, left, right, push)
+* Antenna connector for the telemetry stream from [TeleMetrum](../TeleMetrum/)
+* Integrated GPS receiver and antenna to allow display of current user 
+  position, and relative position of GPS-equipped rockets
+* Audio amplifier and speaker for voice status updates
 * Integrated rechargable battery
-* USB interface for configuration and power 
+* USB interface for configuration, power, and flight log extraction
 
 ### Developer View ###
 
@@ -27,8 +36,8 @@ and relative position of GPS-equipped rockets
        * equivalent of a [TeleMetrum](../TeleMetrum/) less the sensors
        * [Atmel ATtiny48](http://www.atmel.com/dyn/products/product_card_v2.asp?PN=ATtiny48) used as an I/O expander
        * 4 line, 20 character transreflective text LCD display
-       * "joystick" switch for user inputs
-* LiPo battery
+       * multi-directional switch for user inputs
+* 2Ah LiPo battery for all-day use
 * Software Features (planned)
        * [AltOS](../AltOS) for the cc1111 and simple C for the AVR
 * Tools Used
@@ -43,6 +52,16 @@ None yet!
 
 ## Artifacts ##
 
-A tentative schematic exists at
+Schematics and PCB artwork exist at
 [git.gag.com](http://git.gag.com) in the project
-[hw/teleterra](http://git.gag.com/?p=hw/teleterra;a=summary).
+[hw/teleterra](http://git.gag.com/?p=hw/teleterra;a=summary).  
+
+## Future Plans ##
+
+In 2010, two v0.1 prototypes were assembled, and the hardware was 
+tested.  Unfortunately, this design turned out to be too expensive to
+manufacture and
+sell.  We then worked on a cost-reduced v0.2 design, which worked ok, but
+just wasn't very satisfying to use compared to a TeleBT and Android 
+device.  It's possible, but unlikely, that we'll come back to TeleTerra at 
+some point in the future.