Wireless network technology is essentially a balance between power consumption, distance, speed, and networking capabilities. The question is: can we achieve low power consumption, long-distance communication, and fast, easy network deployment?
The Zigbee protocol defines a network with three types of nodes: a coordinator, a router, and an end device. To establish a Zigbee network, you only need a coordinator plus either a router or an end device. However, different application scenarios demand various network topologies—point-to-point, star, relay routing, hybrid structures, and more. This diversity requires a networking protocol that is not only fast and efficient but also stable, convenient, and flexible.
Figure 1: Zigbee Network Topology
**First, the FastZigbee Protocol**
In essence, if any node on the network supports peer-to-peer data transmission without requiring a coordinator to manage the entire system, then each node can independently send data. This makes the system easier for users, as they don’t need to worry about the underlying network structure.
Based on this idea, ZLG Zhizheng Electronics has developed the FastZigbee transparent peer-to-peer protocol based on the Zigbee protocol stack, after years of practical experience. Its key features include:
- Zero delay startup, no waiting for network access
- Large node capacity, up to 65,535 nodes theoretically
- Full transparent 3-wire serial transmission, allowing custom data formats
- Dynamic configuration and self-organizing network support, enabling quick deployment without additional development
- Intelligent routing algorithm for rapid network expansion and recovery
Figure 2: FastZigbee Protocol Features
**Second, Self-Organizing Network Implementation**
The FastZigbee protocol already provides a solid foundation for networking. Can it further simplify deployment and construction? Yes, ZLG Zhizheng Electronics has added self-organizing network functionality to the FastZigbee protocol, making wireless product development much simpler. Let’s take the AW516x series transparent transmission module as an example to explain how engineers can implement it in two ways.
In self-organizing mode, the host module automatically selects an unused PANID and channel to form its own network and assigns unique local addresses to the slave modules. Once the self-organizing function is enabled, the slave module can communicate immediately without any configuration.
**2.1 Hardware I/O Control**
(1) The host module has two working modes, controlled by the JOIN pin (IO1) and the DETECT pin (IO2). When the JOIN pin is low, the host operates in network mode, allowing slaves to join. If the JOIN pin goes high, the host enters normal operation, and the slaves can no longer join.
If the DETECT pin detects a low level for over 3 seconds, the host reacquires network parameters, randomly generates a new PANID and channel, and checks if they are already in use. If so, it regenerates them. After this, all connected slaves must rejoin the network.
Figure 3: Host Module Networking Workflow
(2) The slave module also has two working modes, determined by the state of the JOIN pin. A short low pulse (under 3 seconds) puts it in network mode, while a long low pulse (over 3 seconds) puts it in unwinding mode. If the JOIN pin is high, it uses stored PANID and channel to enter normal operation.
Figure 4: Slave Module Network Access Process
**2.2 Software Command Configuration**
In addition to hardware control, the host can also use commands to allow slaves to join the network. There is a specific window time during which the host accepts network requests from the slave. After that, it returns to normal operation. Commands can also be used to query information about connected slaves and the status of the master and slave modules.
**Third, Test Case**
All tests were conducted using the ZLG Zigbee evaluation board: AW516x Demo Board.
Figure 5: Zigbee Evaluation Kit
**Steps:**
1. Use evaluation board 1 as the host and evaluation board 2 as the slave.
2. Pull the JOIN pin (IO2) of the host board low to enable joining.
3. Short the JOIN pin (IO2) of the slave board below 3 seconds to enter network mode. Multiple slaves can be joined simultaneously.
4. After the network is formed, the slave returns to normal operation. Pull the JOIN pin of the host back high to complete the setup.
**Communication Test:**
Connect both boards to a PC and open two serial port debug tools for transparent data transmission.
Figure 6: Communication Test
This real-time implementation shows how simple and effective the FastZigbee protocol is for building reliable and flexible wireless networks.
USB Socket
Function description
The socket is ordinary converter,with
two output 5V2A power USB power supply at the same time,can be very
convenient in use electrical appliances and recharge the equipment at
the same time,such as digital products like Iphone Ipad,MP3,MP4 etc.The
charge apply to full range of international AC output,no-load power
consumption less than 0.3W,with short circuit,overload,over-voltage
protection,can be convenient for your life and save more energy
Timer Control Time Adgustment
1.Press the power switch 1 time,the 1HOUR LED will light on.The Timer into ON mode,USB and control socket output ON .
2.Continuously press the power switch
the LED light on,the Countdown mode and LED light on will cycle change
from 1HR,2HR,4HR,6HR,8HR,10HR.
3.Choose you need countdown time
mode,the mode LED will lighto on,start countdown until countdown time
finish,the control output and USB change to OFF
4.Then the countdown is start,The Time indicate LED will from high to low auto change until Countdown finish off.
Failure analysis:
1.check whether the power supply connection is good
2.check whether the USB cable is loosen
Warning Note:
1.Use indoor and dry location ONLY
2.The load max does not exceed 15A 3600W
3.This product does not convert voltage please do not miss use DO NOT exceed the maximum loading of 3600 Watts 15A
4.Always have earth connection for safety reason
5.If in doubt please consult with a qualified electrician
USB charger socket, USB socket, USB plug, USB plug socket
NINGBO COWELL ELECTRONICS & TECHNOLOGY CO., LTD , https://www.cowellsocket.com