vishnupg said:i am planing to design a zigbee module myself using a zigbee transreceiver chip.
vishnupg said:my problems is that i am a hardware guy but if i go designing this i dont know to write program or stack for this.
so how can i test this?
do you have any experience in designing this stuff?
Exactly. I was not at all satisfied with the distance.vishnupg said:so you mean you already tried with ATmega128RFA1 and got it working. And now you are trying to raise it power to acheive higher distance coverage.
You should purchase two if money is not a problem. My opinion on this described in this post:=vishnupg said:please note that i am not having any development board with me. then is it possible to proceed with the project
As soon as I bought the kits and got them working, I knew exactly what design should I use for my custom boards if you get my point :wink:. Let us not forget that designs for those are free to find in the web. But amplifying the signal is another story, finding a FEM to be easy to work with is not easy. I think SiGe FEMs are the most convenient.vishnupg said:can you share your work here so that i can refer?
This not exactly how it works. You will need to write your program on the application layer. But all other layers are already functional. With a small effort and by reading the user guide, you could write a demo program for two nodes (coordinator and router or coordinator and end device) to exchange data with each other. Of course as you said you can write it from the scratch, even in assembly (I think) if this is what you mean by saying that you are a hardware guy. You may don't care about certification. If you are not advertising that you are selling ZigBee (even if you had hardware certification, you should pay money to the alliance for that), but just a wireless mesh networking system, then you should have no problems with the law. I just gave you a full and clear picture of all the data for this project in post#4. Of course you can proceed as you originally planned!vishnupg said:if we are using atmel stack then do we have to write any program?
can we directly burn a hex in to the controller,are they providing it?
No this is not the case, there are several stacks available on this. I am using ATMEL's BitCloud for example.tarakIND said:Till now there is only one free stack available by FreakZ guy
I agree that you gain a lot by using software flexible products. However if you take a look at the prices of ZigBee modules, they are still really high. Discouraging I would say if you are to build a big network. New technology costs everybody know that, but I still believe that prices are higher than they should be.tarakIND said:If software becomes more flexible and less h/w dependent you are a winner at cost and technology.
Learn the stack very well, get to know its tools, functions, structures. Build a minimal program for starters with a couple of nodes communicating peer to peer, then raise the nodes number until you have a small network with 5-6 nodes. Make some tests for range, network traffic (a sniffer tool would not be a bad idea) and also I believe a PC program is necessary to have a real time view of the nodes and their properties. Once you have built this small network, you can start expanding it.tarakIND said:how implementation is to be done.? Just a big picture.
tarakIND said:which devices (hardware transreceivers ) would I need for a controller and the nodes. Assume I want a basic star network to begin with one master and 2 nodes.
What would be the approx cost in this setup?
Are you attaching it to a PC or a microcontroller
if a microcontroller the XBee serial to Zigbee modules
https://www.digi.com/products/wirel...ipoint-rfmodules/xbee-series1-module#overview
very easy to interface to microcontrollers
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