Section six wireless communication in the Raspberry Pi fo. In this section, we will cover the following topics introduction to wireless communication in Raspberry Pi for remote GPIO control with Bluetooth introduction to the Kane platform IoT project with Kane video introduction to wireless communication in Raspberry Pi four. This video we will cover the various wireless communication standards supported by the Raspberry Pi for wireless communication involves the transmission of information over a distance without the help of wires, cables or any other forms of electrical conductors. wireless communication is a broad term that incorporates all procedures and forms of connecting and communicating between two or more devices using a wireless signal through wireless communication technologies and devices. As covered in the hardware overview of the pie for the boat comes in built with two wireless interfaces. It supports both Wi Fi and Bluetooth wireless communication out of the box.

The inclusion of the latest versions of the wireless capabilities of Wi Fi and Bluetooth to the Raspberry Pi four enhances its application possibilities in areas such as robotics, environmental sensing, and remote imaging. impressively, the Raspberry Pi four has a dual band aid 02 point seven AC Wi Fi and throws in Bluetooth 5.0 support and improvement The Bluetooth four on prior models. The support for dual band Wi Fi means that you can now connect to a faster five gigahertz Wi Fi access point. This will significantly reduce the latency for remote access and improve overall networking speed. Bluetooth connectivity is very important for IoT applications. The obvious advantage of Bluetooth 5.0 is its ability to transfer data at double speed, and four times the distance as compared to Bluetooth 4.2.

Bluetooth 5.0 also allows us to pair and communicate with multiple devices independently. Bluetooth 5.0 can also replace Wi Fi implementation for small IoT edge devices in some applications with Bluetooth low energy due to its longer run And ability to communicate with multiple devices independently. In addition, other communications standards, such as ZigBee, and near field communication, also called NFC can be realized by special interfacing modules having serial UART support. So which communications standard should you choose for your next wireless project? There is no single best solution for all projects. Rather, each of the wireless communication standards has different advantages and disadvantages for different applications.

Bluetooth five is a popular standard for interfacing to devices for application where the data rate is not a critical factor. It has a low cost and low power consumption profile, which makes it particularly suitable for battery powered Internet of Things devices. Along with Bluetooth five pifo also supports ble, also called Bluetooth Smart. ble can establish up to 20 connections simultaneously at half the power consumption of classic Bluetooth. It supports more simultaneous connections because it transfers small data packets and establishes quick connections. Classic Bluetooth 5.0, on the other hand, can initiate only seven simultaneous connections.

Wi Fi communication is more suitable than bluetooth for full scale networking applications in which a high data rate is critical. Therefore, it is popular with media rich internet attached devices and laptop computers. Unfortunately, Wi Fi has heavy power consumption costs. It can sometimes use as much as 40 times the power costs assumption of Bluetooth compatible communication tasks. The ZigBee communications standard can also be utilized by the Raspberry Pi for usually by interfacing via a UART device, the ZigBee modules. The ZigBee devices are designed to have a low power profile, and they can communicate over significant distances, forming mesh network arrangements to extend the network range further.

Unfortunately, the maximum data rates are quite limited in comparison to Bluetooth and Wi Fi. However, the low communications latency means that the standard is suitable for real time control like in industrial automation. NFC is a short range radio communication standard that builds on RFID communications similar to the one we implemented in the last section. It's a boasts a communication range of up to eight inches and enables very high data rates when the devices are closer than two inches. NFC supports communication with unpowered devices using inductive coupling, just like the RFID tag we used earlier, but it can transfer a lot of data much quicker than any normal RFID tag could. It's very useful in many applications like logistics, medicine, inventory management, access control, e wallet payment, etc.

You can interface your Raspberry Pi four with an NFC reader module, like the NFC pN 532. To start building projects around this protocol. The interfacing will be similar to that of the mfr CF fi 22 RFID reader, as both uses SPI bus to interface with the PI four Summary. In this video we have covered the following topics various wireless communication standards supported in the Raspberry Pi four. In the next video, we have learned to do remote GPIO control over Bluetooth