1 [[!meta title="TeleBT History"]]
6 The v1 product was based on the same TI RF system on chip part that many of
7 our other early products used. As a result, it required pair programming
8 (meaning you could not update the firmware over USB). That radio was also
9 lower transmit power, and had less receiver sensitivity than the ones used
10 in our current products.
12 These are photos of the first production version, 1.0:
14 <a href="v1.0/telebt-top.jpg"> <img src="v1.0/telebt-top-thumb.jpg"></a>
15 <a href="v1.0/telebt-bottom.jpg"> <img src="v1.0/telebt-bottom-thumb.jpg"></a>
19 * 70cm ham-band transceiver compatible with [Altus Metrum](../) products,
20 programmed for 38k4 GFSK data rate with forward error correction
22 * 4 pin Tyco MicroMaTch connector for debug and flash programming
23 * 8 pin Tyco MicroMaTch connector supports serial or SPI interface
24 * 850mAh LiPo battery charged via USB
26 ### Developer View ###
28 * [TI CC1111F32](http://focus.ti.com/docs/prod/folders/print/cc1111f32.html) Low Power RF System-on-Chip
29 * Sub-1Ghz transceiver
34 * 6 12-bit analog inputs (11 bits with single-ended sensors)
35 * 2 channels of serial I/O
37 * interfaced to Arduino via async serial plus two handshake pins
38 * Rayson BTM-182 (Bluetooth SPP module) with async interface to CC1111
39 * 150mA 3.3V LDO regulator
40 * input and output appear on 8-pin companion connector
42 * Written mostly in C with some 8051 assembler
43 * Runs from on-chip flash, uses on-chip RAM
44 * USB serial emulation for data interface
46 * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
47 * [SDCC](http://sdcc.sourceforge.net/) compiler and source debugger
49 * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
50 * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
54 For those who don't have ready access to the gEDA suite, here are pdf snapshots
55 of the files for Production PCB version 1.0 in more easily readable form.
57 * [schematic](v1.0/telebt.pdf)
58 * [pcb artwork](v1.0/telebt.pcb.pdf)
59 * [bill of materials](v1.0/partslist.csv)
63 For version 3, we moved to an ARM system on chip and discrete radio chip,
64 which gave the ability to re-flash over USB and better UHF radio performance,
65 but we continued to use the same Bluetooth module.