Hello people,
I would like you guys to help me in designing just a small simple transmitter /receiver cct Basically, I want the device to sound an alarm in the wireless receiver cct whenever its 10ft radius away from the transmitter cct. I also want to use small replaceable components and small batteries (like the ones in watches) as i want it to be very small cct. The project is for my electronics class. If also you can lead me to a clear schematic I'd greatly appreciate it.
Thanks guys