TeleBT
TeleBT provides the equivalent of a TeleDongle, with the addition of Bluetooth as an alternative to USB for connection to the ground station computer.
The RF filter components are set for use in the vicinity of 435 Mhz.
These are photos of prototype version 0.2:
For the latest TeleBT firmware and related software, please visit the AltOS page on this site.
Features
User View
- 70cm ham-band transceiver compatible with Altus Metrum products, programmed for 38k4 GFSK data rate with forward error correction
- micro USB interface
- 4 pin Tyco MicroMaTch connector for debug and flash programming
- 8 pin Tyco MicroMaTch connector supports serial or SPI interface
- 900mAh LiPo battery charged via USB
Developer View
- TI CC1111F32 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
- Raycom Bluetooth module interfaced to the CC1111 via async serial
- 150mA 3.3V LDO regulator
- 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
- Licenses
- The hardware is licensed under the TAPR Open Hardware License
- The software is licensed GPL version 2
Artifacts
There is a single manual for all Altus Metrum products, which is available in html and pdf formats.
The hardware design current gEDA files are available from git.gag.com in the project hw/teleshield.
Future Plans
Two prototype versions have been built with different physical form factors. We have working firmware, and a prototype of support in AltosUI. Work is also underway on an Android version of AltosUI.
No firm schedule for production and sale of TeleBT has been set yet.