Categories

Bluetooth Research for Ubiach

Here is what we’re thinking of ordering: http://www.blueradios.com/BR-SC40A.pdf

But we’re still unsure about how to implement the audio PCM channel…. Trying to gather as much information as possible before we start hacking this chip.

—-

The following article is from mobileinfo

Bluetooth Technology

How Bluetooth Technology Works

“Connective convenience”

Bluetooth is a high-speed, low-power microwave wireless [...]

Wireless Comparison

(from Electronic Design 09/15/05)

Technology
Frequency
Modulation
Standard
Maximum range
Data rate
Applications

Bluetooth
2.4 GHz
FHSS/GMSK
Bluetooth SIG and IEEE 802.15.3
30 m
1.0, 3.0 Mbits/s
Cable replacement, cell-phone headsets, peripherals

CDMA2000 (1xRTT, EV-DO)
800/900 and 1800/1900 MHz
DSSS, QPSK
TIA
10 km (avg.)
157 kbits/s, 2Mbits/s
Email, photos, SMS, Internet access

GSM (GPRS, EDGE)
800 to 900, 1800, 1900 MHz
GMSK, 8PSK
ETSI, ITU
10 km (avg.)
128, 384 kbits/s
Email, photos, SMS, Internet access

Infrared (IR)
850 nm
Baseband
IrDA
3 m
16Mbits/s
Peripheral laptop and cell-phone [...]

Processing connection (PC) to Bluetooth (BlueSMIRF)

During the past week we’ve been working hard on getting the two to talk in a stable manner. There were many hurdles along the way, but we’ve managed to get a very stable connection between our processing app (running on a PC) and the BlueSMIRF chip from sparkfun, which we connected to a microchip PIC [...]