[[!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: 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.