Introduction to Zigbee (2020) | Learn Technology in 5 Minutes

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MAKERDEMY

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Hello guys, Welcome to another episode of “Learn technology in 5 minutes” by Makerdemy.

In this video, you will learn about a wireless technology called Zigbee.

Before getting into the video, I am sure that you are familiar with short-range wireless networking technologies like wifi and Bluetooth which are used to connect devices. These technologies are fairly mainstream today and are used in specific use cases. For example, if you want to stream audio you are likely to use Bluetooth. Likewise, if you are streaming video or large files, you are likely to use WiFi. But, let us think of a use case where we have to connect a large number of battery-operated devices. Is it ok to operate them using Wifi or Bluetooth?

The answer is clearly NO. Wifi consumes a lot of power and is therefore not ideal for battery-operated devices. Most of the WiFi devices like your mobile phones or your laptop are usually charged on a daily basis.

Then what about Bluetooth? you may say well, Bluetooth consumes less power than wifi so would that not be ideal for our use case? But, You can connect only a limited number of devices to a Bluetooth network and therefore BlueTooth is not ideal for our use case as well.

So, what could be a better solution to connect a large number of battery-operated devices?. Enter Zigbee

But what exactly is this term Zigbee?

Zigbee, like Wifi and Bluetooth, is a short-range wireless protocol. The Zigbee is built on top of the IEEE 802.15.4 physical layer and is designed to meet the needs of low-cost battery-operated applications where Longer battery life is of the major concern.

It also operates in the 2.4 GHz band spectrum where wifi and Bluetooth operate.

Unlike the other two technologies, Zigbee operates at a very low data rate of 250kbps. And this is the tradeoff we need to live with when we are optimizing for a low power network protocol that can connect many devices.

A single Zigbee enabled device can reach up to a range of 10-20 meters (indoors) in search of another Zigbee device present in the network.

The Zigbee operates in a mesh topology, which helps the Zigbee device to transfer its message to its destination via a number of intermediate Zigbee devices connected within the network.

So what is Mesh topology? Don't wifi and Bluetooth follow this?

Well in a basic sense, topology can be termed as a way in which devices are connected to each other.

In mesh topology, there is a coordinator that sends the information, an intermediate device which carries forward this information and an end device which receives the information. All the devices in this topology expect the end devices can communicate with each other and also able to change the paths to deliver the information if any disturbance occurs in the network.

Whereas, In star topology, there are no intermediate devices and the communication is done directly between the Coordinator and the end device. This disables the chance of establishing an alternate path to transfer information at the time of failures. Wifi and Bluetooth are configured as Star networks.

There are 2 advantages to using a mesh network. First, a mesh network increases the system reliability. Second, because of the way data transmission happens in a mesh network, the short-range of individual Zigbee devices stops being a problem. We can add a large number of Zigbee devices which need to transmit data just to the neighboring node. This way, very large networks can be built based on Zigbee. In fact, the Swedish city of Gothenburg is a giant Zigbee network, where over 250,000 homes are connected together for the purpose of remote energy metering.

Coming to the security associated with Zigbee, it uses a 128bit AES algorithm to encrypt and authenticate the message signals via the links which are secured by special keys allowing the end-user to use the devices in a secure manner.

So, where do you think Zigbee is being used? It is extensively used in Smart Homes to remotely access electronics and also in Smart metering

That is all from me in this video, folks. If you like this video then subscribe to our channel and ring the bell so that you don’t miss any videos from us.

Links:
www.electronichouse.com/smart...

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КОМЕНТАРІ
MAKERDEMY
MAKERDEMY Рік тому
Check out the "Learn Technology in 5 Minutes" video playlist ukposts.info/slow/PLZPR_hmBy0cz75sWkojLbt8KrfC3UkPdJ
Tina Ahmed
Tina Ahmed 8 днів тому
Just love it , . Thank you so much for such a nice explanation❤
MAKERDEMY
MAKERDEMY День тому
Glad you liked it!
Ajay Jain
Ajay Jain 10 днів тому
Why not use BLE Mesh, you can operate devices from mobile also
Naman Jain
Naman Jain 2 місяці тому
short and sweet
MAKERDEMY
MAKERDEMY 2 місяці тому
Thank you.
Sandhya Myathari
Sandhya Myathari 6 місяців тому
Nice explanation brother keep on going thank you 🙏🙏🙏🙏🙏🌹
MAKERDEMY
MAKERDEMY 5 місяців тому
Keep watching
Teaching Python In Telugu
Teaching Python In Telugu 6 місяців тому
Crystal Clear 🙌🏻
MAKERDEMY
MAKERDEMY 6 місяців тому
Thank you.
Aravind Surya
Aravind Surya 6 місяців тому
Nice Video...
MAKERDEMY
MAKERDEMY 6 місяців тому
Thank You
MN Mansha
MN Mansha 7 місяців тому
Great
MAKERDEMY
MAKERDEMY 6 місяців тому
Thank You.
Tec 21
Tec 21 8 місяців тому
Thank you
MAKERDEMY
MAKERDEMY 8 місяців тому
You're welcome
akash Khare
akash Khare 9 місяців тому
Nice explanation
MAKERDEMY
MAKERDEMY 8 місяців тому
Thanks and welcome
Usman Mahboob
Usman Mahboob Рік тому
excellent explanation (y)
MAKERDEMY
MAKERDEMY Рік тому
Appreciate the support, Usman
AHMAD JAMIL
AHMAD JAMIL Рік тому
what different with remote rf 433mhz???..this remote rf is low power consumption n price is very cheap
MAKERDEMY
MAKERDEMY Рік тому
Hi Ahmad, It depends on the Application you are trying to build. If it just a simple project, that needs to send data over the air, without the intention for scalability, security, interoperability & reliability, then you can use the RF433 Modules. On the other hand if you are trying to build a true IoT System that need to be build across a lot of nodes, ZigBee can support more than 60000 nodes in a single network, through its Mesh Topology. Also for mission critical application, where fast and reliable data transfer is a must, ZigBee provides as low as 30ms response time with proper acknowledgment messages, to ensure that the data has reached its destination, whereas the RF433 doesn't have that feature. Moreover, ZigBee supports Full Duplex Communication that too encrypted by 128 bit AES, which is lacking in the RF. Furthermore, unlike what you have said RF433 doesn't take less power than ZigBee. It all depends on the number of packets being sent, and the polling frequency. You can refer this paper to see the graphs of power consumption. www.researchgate.net/figure/Energy-Consumption-per-Week-for-RF433-ZigBee-Bluetooth-Wi-Fi-Using-Communication_fig2_311841905 .We hope this was helpful. Thank You
VENKATA ROHITH
VENKATA ROHITH Рік тому
Make a video on LoRa
MAKERDEMY
MAKERDEMY Рік тому
Hello Venkata Rohith We have released a video on LoRa. Kindly check. ukposts.info/have/v-deo/j5R7rI6xintqqKc.html
MAKERDEMY
MAKERDEMY Рік тому
We will surely create a video on LoRa Venkata Rohith. Stay tuned.
Mohan Chodisetty
Mohan Chodisetty Рік тому
Nice presentation ... The way of your picture n graphical presentation is good n understand for layman... Keep it up 👍
MAKERDEMY
MAKERDEMY Рік тому
Hi Mohan, We are happy that you liked our video presentation and content. Stay Tuned for more such informative videos. Thank You
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