muterdewe:
@Holmes, i dont think the question is sily as isa100 is a protocol like zigbee. my data logger software (vb based) and xbee explorer has sucessfuly working with lm35 temp sensor that connected to xb tx. now, i got additional sensor that working in isa100 protocol. so, i would not build another arduino based data logger that connect to isa100 based transmitter. i would prefer to make an interface script between isa100 and zigbee.
I share @Holmes's view.
@muterdewe I think there is a lot of stuff included in the words I have highlighted that you are not explaining clearly. A diagram showing how everything is connected would be a start. I know what an LM35 is, but what is an "xbee explorer" and what is an "xb tx". Is there an Arduino (which one) included in your existing system? If so what does it do?
...R