Hi,

I'm working on a security system but I'm not sure about what device to use. The system should work this way. I have a control unit at a place and a person with a tag. If the person walks out of range from the control unit at an approximate distance of 15 feet the alarm should be triggered.

I was thinking to use an RFID with a microcontroller butIm not sure about the circular range and the distance. I was reading about an 915 MHz RFID to deal with the distance.

I need some advice here. Thanks 4 your replies .

 

RFID wouldn't work. You need Bluetooth.

 

OK, so with a bluetooth I can trigger an alarm if the person walks out of range, but how does the bluetooth can do that? I need to understand it to know how to interface it to a microcontroller or micprocessor.

 

There is discussion about a similar project in this thread. Maybe some help there.

As MrChips said, it uses bluetooth.

 

Google: child luggage proximity alarm

Ken

 

Can anyone explain this to me. what does the values 0xXXX or 0xXX mean?

 

If you don't understand how hexadecimal is typically represented, then this project is probably too advanced for you.

I would say go with KMoffett's advice and get a product that is designed already...

 

If you don't understand how hexadecimal is typically represented, then this project is probably too advanced for you.

I would say go with KMoffett's advice and get a product that is designed already...

so basically it means the actual value or range of values for each of those parameters.

for the connection_handle paramter should be a hex type value of 0xXXX in the range: 0x0000-0x0EFF

but for RSSI_Read Command succeeded parameter its a specific value: 0x00

Am I correct?