[[!meta title="TeleNano"]]
# TeleNano

This is a tiny, baro-only recording altimeter for 
model rocketry with integrated telemetry link.  

## Motivation ##

We hope with TeleNano to deliver an interesting "introductory" product 
in a different price category than our flagship products like 
[TeleMetrum](../TeleMetrum).  The combination of a baro altimeter and
radio direction finding ability in a super-tiny package seems like it
might be fun even for [Estes](http://www.estesrockets.com/) sized rockets!

## Features ##

### User View ###

* Recording altimeter for model rocketry
* 70cm ham-band transceiver for telemetry downlink
* Barometric pressure sensor good to 45k feet MSL
* Designed to use a single LiPo rechargeable battery
* 1.0 x 0.5 inch board designed to fit inside 18mm airframe coupler tube

### Developer View ###

* Hardware Features
	* [TI CC1111F32](http://focus.ti.com/docs/prod/folders/print/cc1111f32.html) Low Power RF System-on-Chip
		* Sub-1Ghz transceiver
		* 8051 MCU
		* 32k Flash
		* 4k RAM
		* USB 2.0
		* 6 12-bit analog inputs (11 bits with single-ended sensors)
		* 2 channels of serial I/O
		* digital I/O
	* [Freescale MP3H6115A](http://www.freescale.com/webapp/search.partparamdetail.framework?PART_NUMBER=MP3H6115A6U) pressure sensor
* Software Features
	* Written mostly in C with some 8051 assembler
	* Runs from on-chip flash, uses on-chip RAM, stores flight data to
		upper blocks of on-chip flash
* Tools Used
	* [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
	* [SDCC](http://sdcc.sourceforge.net/) compiler and source debugger
* 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 ##

The design files can be found on [git.gag.com](http://git.gag.com) in the 
project [hw/telenano](http://git.gag.com/?p=hw/telenano;a=summary).  

## Future Plans ##

Two generations of hardware prototypes were built and worked as desired, but 
we don't plan to make any more at this time.  One problem is that the first
version of [TeleMini](../TeleMini/) was basically TeleNano plus dual 
deployment, and the additional cost of the deployment parts was low enough 
to make TeleMini a more compelling product.  Despite that, sales of TeleMini
have been slow.  We remain interested in a super-small tracking device, but
now think we'd rather figure out how to make [TeleGPS](../TeleGPS/) smaller
than return to a as simple a tracking device as TeleNano.