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[[!meta title="TeleShield"]]
# TeleShield
This is an RF interface board for use with [Arduino](http://arduino.cc)
systems. It provides the equivalent of a [TeleDongle](../TeleDongle)
plus [Bluetooth](http://www.bluetooth.com), plus a microSD socket for
data storage.
The RF filter components are set for use in the vicinity of 435 Mhz.
These are photos of the first prototype:
<a href="v0.1/teleshield-top.jpg"> <img src="v0.1/teleshield-top-thumb.jpg"></a>
<a href="v0.1/teleshield-bottom.jpg"> <img src="v0.1/teleshield-bottom-thumb.jpg"></a>
For the latest TeleShield firmware and related software, please
visit the [AltOS](../AltOS) page on this site.
## Features ##
### User View ###
* can be used as an
[Arduino shield](http://www.arduino.cc/en/Main/arduinoShields)
or as a USB peripheral
* 70cm ham-band transceiver compatible with [Altus Metrum](../) products,
programmed for 38k4 GFSK data rate with forward error correction
* Bluetooth
* micro USB interface
* 4 pin Tyco MicroMaTch connector for debug and flash programming
* 8 pin Tyco MicroMaTch connector supports serial or SPI interface
* micro SD socket for Arduino data storage (not connected to CC1111!)
### Developer View ###
* [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
* interfaced to Arduino via async serial plus two handshake pins
* Rayson BTM-182 (Bluetooth SPP module) using async to CC1111
* micro SD card socket interfaced to the Arduino via SPI
* 150mA 3.3V LDO regulator
* can take input from either USB or the unregulated Arduino input
* input and output appear on 8-pin companion connector
* Software Features
* Written mostly in C with some 8051 assembler
* Runs from on-chip flash, uses on-chip RAM
* USB serial emulation for data interface
* 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 ##
There is a single manual for all Altus Metrum products,
which is available in [html](../AltOS/doc/altusmetrum.html) and
[pdf](../AltOS/doc/altusmetrum.pdf) formats.
The hardware design current gEDA files are available from
[git.gag.com](http://git.gag.com) in the project
[hw/teleshield](http://git.gag.com/?p=hw/teleshield;a=summary).
## Future Plans ##
The prototype v0.1 boards work fine. Feedback from showing them at the
Arduino mini-conference at LCA 2012 resulted in elimination of the Bluetooth
interface. Updated boards have not been built yet, but
[schematic and artwork files](v0.2/) are available for review and comment.
No significant interest in this design ever materialized, so we have no plans
to make any more at this time.
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