Bluetooth Team 1 What is Bluetooth? Origins Ericsson, 1994 - - PowerPoint PPT Presentation

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Dec 16, 2023 144 likes •231 views

Bluetooth Team 1 What is Bluetooth? Origins Ericsson, 1994 Harald Bluetooth Today Bluetooth Special Interests Group Compatible with a multitude of devices Widespread IEEE Standard Secure

SLIDE 1

Team 1

Bluetooth

SLIDE 2

What is Bluetooth?

Origins

○ Ericsson, 1994 ○ Harald Bluetooth

Today

○ Bluetooth Special Interests Group ○ Compatible with a multitude of devices ○ Widespread ○ IEEE Standard ○ Secure ○ Wireless ○ Low Power Consumption

SLIDE 3

Bluetooth Advantages

Wireless

○ 30+ foot range

Directionless
Multiple simultaneous connections
Global standard

SLIDE 4

Bluetooth Versions

Seven major versions of Bluetooth
Three common versions seen today

○ Bluetooth 2.1 + EDR ○ Bluetooth 3.0 + HS ○ Bluetooth 4.1 + BLE

SLIDE 5

Bluetooth Operation

Pairing - Existential Awareness
Connecting - Shared Channel
Connected devices form piconet
Master-Slave structure

○ Master has up to 7 slaves

Multiple connected piconets form a

scatternet

SLIDE 6

Frequency Hopping

Frequency range: 2.4 - 2.485 GHz
Frequency Hopping

○ 79 frequency channels ○ 1600 hops / sec

Unintentional shared channel unlikely

○ Lasts for tiny amount of time

SLIDE 7

Bluetooth In Our Project

Sensors > Arduino > Android
Android pairs with Arduino

○ Android uses device discovery

Establish serial connection