For which purpose Bluetooth GPIO module is common?

2021-11-24/ By Admin

A technical world without Bluetooth is hardly imaginable today. You use the popular communication standard to connect smartphones, headphones or smart speakers with one another. Moreover, Bluetooth GPIO module makes life easier in many ways.

Bluetooth GPIO module

 Perhaps you still remember the time when you could only transfer your data to your cell phone using a cable. How impractical. Thanks to Bluetooth, the days of unnecessary cable clutter are long gone with many devices, and a wide variety of devices are simply connected to one another at the push of a button.


What is Bluetooth?

Similarly, why Bluetooth is actually called Bluetooth?

How does blue tooth work?

What do i need for Bluetooth?

The different Bluetooth classes

The two types of blue tooth

What is blue tooth GPIO module?

Bluetooth GPIO module is a wireless ad hoc radio standard for streaming audio files, transferring data or sharing information between devices. It is a customizable, fully compatible and interactive IoT innovation that spans markets and industries.

Nowadays, a wide variety of devices - from headphones to hands-free systems in cars to kitchen appliances - equip with Bluetooth. In a nutshell, Bluetooth is now common in more than 8.2 million different products for simple data exchange over a relatively short distance.

Why Bluetooth is actually called Bluetooth?

The wireless radio standard was developed in 1994 by the Swedish company Ericsson. Four years later, in 1998, the Bluetooth Special Interest Group (SIG) was founded. This is still responsible for the further development of the radio standard to this day and bluetooth GPIO module too.

In 1996 the market leaders Nokia, Sony Ericsson and Intel got together to plan the standardization of the technology for the connection and collaboration of different products and industries. It was Jim Kardach from Intel who initially introduced the name Bluetooth as a placeholder for this technology.

What is the origin of blue tooth?

His thought leads back to King Harald "Blue Tooth" Gormosson. From the year 958 AD he was King of Denmark for 30 years and was known for the union of the then isolated tribes. For Kardach, the name “Bluetooth” was therefore absolutely obvious.

Bluetooth GPIO module 2021

The Bluetooth GPIO module technology is a Scandinavian invention that combines different products. No different from King Harald, the Danish king who reunited the empire. The pseudonym of the king himself can, however, be disputed.

 Some claim came from a dead, in the king's mouth, but this has not been proven. However, a different official name should then be found for the placeholder “Bluetooth”.

How blue tooth became the official name?

The favorites were “” and “PAN” (Personal Area Networking). After deciding on the latter, a dilemma arose, because after research on the Internet it turned out that thousands of results already existed for the synonym.

Unfortunately, the alternative Radio Wire was also out of the question, as the technology was about to launch and no full trademark research has yet been carried out.

How Bluetooth GPIO module became popular?

The only remaining option for the launch was the Bluetooth GPIO module, chosen as a placeholder. The name spread rapidly in the industry and very quickly there was no longer any possibility of changing the name again. Bluetooth became the official name.

The logo is a simple combination of the initials of King Harold Blazons. The initials came together in rune form and this is how the Bluetooth symbol emerged.

How does bluetooth work?

Let us now come to the technology of the radio standard. Every device that comes with Bluetooth has a small microchip with a transmitter and receiver unit. This is a prerequisite for the wireless connection and the transfer of data. Each device has its own unique 48-bit serial number for unique Bluetooth wireless standard identification.

The connection between two blue tooth GPIO module enabled devices then takes place in the so-called ISM band. This is the same frequency band that is responsible for cordless phones ringing or electric garage doors opening. In order to avoid the superposition of several radio waves, Bluetooth devices regularly change the frequency.

It does this by dividing the frequency band into 78 sections. The frequency itself then changes in 1 MHz steps up to 1,6000 times per second. This avoids disruptions. Theoretically, up to eight active devices connect via Bluetooth and a Bluetooth network forms during communication. Similarly, a device can even be active in two networks at the same time.

What do I need for blue tooth?

For the connection via Bluetooth - the so-called "pairing" - two requirements are important. On the one hand, both devices must be in close proximity to each other. The range differs depending on the Bluetooth class. Furthermore, like many other technologies, Bluetooth is also constantly evolving.

An optimal connection between two devices comes by the latest Bluetooth connection. Bluetooth version 5 is currently the most up-to-date. The versions mentioned are improving in terms of security and transmission speed. In addition, power consumption further reduces and shown on blue tooth GPIO module..

For a working Bluetooth connection, it is not absolutely necessary to have the latest Bluetooth version on both devices. Despite the different versions, the devices are compatible with each other. The only exceptions are devices that only communicate via the Low Energy Protocol. 

Moreover, they are not compatible with standards older than 4.0. Similarly, smart watches and fitness trackers are an example of this.

Bluetooth classRange
I.100 meters
II20 metres
III10 meters

The different Bluetooth classes

The Bluetooth class, in turn, differs depending on the needs of the device. A loudspeaker, for example, needs a range of class I or II.

 A smart watch or headphones, on the other hand, only need an energy-saving class III, because these devices are mostly located in the vicinity of the transmitter. However, the information on the range only applies under optimal conditions and when there are no sources of interference such as walls.

Summary bluetooth GPIO module

In principle, a radius of 100 meters hardly requires for Bluetooth devices, which is why manufacturers usually install Class III Bluetooth. Class I bluetooth GPIO module transmit with a power of 100 milliwatts. Compared to a WLAN transmitter that works with a power of approx. 300 milliwatts, the power of the Bluetooth transmitter is relatively low.