Bluetooth Basics Tutorial

What is Bluetooth

Bluetooth is a low-speed, low-energy short-range wireless communication technology for transmitting fixed and mobile electronic device data over short distances. Bluetooth was introduced in 1994. The “Bluetooth” name is taken from a 10th-century Danish king named Harald Bluetooth, He was known to unite disparate, warring regional factions. Bluetooth SIG industry  with Headquarters at Kirkland, WA 98033 USA controls Bluetooth’s trademark.
Many of you may have heard about Bluetooth, especially with cell phones, speakers, headphones, printers, etc. This technology is used to connect Bluetooth enabled devices so that they can  “talk, communicate” with each other, It creates a world, free from wire

Difference between Bluetooth and wifi

Wifi-It is also a wireless standard, but rather than being designed to communicate between devices, it serves to wirelessly connect devices to the internet. The main difference is that Bluetooth is primarily used to connect devices without using cables. Bluetooth range and transmission speeds are typically lower than Wi-F. Wi-Fi provides high-speed access to the internet

Bluetooth Technology

Bluetooth allows for data transfer from the source to the receipt when both are connected via Bluetooth. It acts much like an invisible cord between the two devices by creating a secure, wireless personal area network in which these devices can communicate. This technology is used to exchange data over short distances up to 10-meter (33-foot) radius wireless network, called a personal area network (PAN) or piconet. At present PAN can be created between two to eight devices. One Master device (Host Device) can connect to seven slave devices. Any slave device in the piconet can only be connected to a single master. Slaves are only allowed to transmit to and receive from their master. They can’t talk to other slaves in the piconet.
You can enjoy music with your Bluetooth  Headphone  when your Bluetooth smartphone is in another room. In my mac, my keyboard and mouse are connected to mac through Bluetooth. It is so very convenient!!

Bluetooth Profiles

Profiles are definitions of possible applications and specify general behaviors that Bluetooth® enabled devices to use to communicate with other Bluetooth devices. Profiles build on the Bluetooth standard to more clearly define what kind of data a Bluetooth module is transmitting. The device’s application determines which profiles it must support, from hands-free capabilities to heart rate sensors to alerts and more. Bluetooth specifications define how the technology works, profiles define how it’s used.
When embedding this technology in a device, a “Profile” is allocated to a device called Classic or Smart profile. These devices are called Bluetooth Smart or Bluetooth Classic devices. Bluetooth Smart devices is a low energy version and work on a different protocol than classic Bluetooth devices. Gadgets like smartphone, Headphone, laptop, printer, PDAs, Cameras are classic Bluetooth devices, Wearable, peripheral devices, as well as all other items that extend our smartphone’s functionality like smartwatches are Bluetooth smart devices.

How Secure Is Bluetooth?

Bluetooth is considered a reasonably secure wireless technology. Connections are encrypted, preventing any interference from other devices nearby. Bluetooth devices also shift radio frequencies often while paired, which prevents easy invasion. Since secret keys are created for each pair, when using two different paired devices, they don’t interfere with each other. However hacking is always possible and attempts are made by hackers as on the internet.




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