Looking for specialized wireless components
Looking for specialized wireless components
(OP)
I am looking for something that can communicate with another device, so that when the transmitter/receiver are far enough apart, I can trigger a sound or some other event.
* Low power (ideally run on a watch battery for at least 1 year).
* Range minimum of 20 ft. 50ft+ ideal
* Very small, and flat. smaller = better
* Low cost. i know there are often tradeoffs in size/price, but wondering what my options are.
* if there are other ones around, they can operate on several separate channels (no interference)
* Approved usage by FCC, of course
* Low power (ideally run on a watch battery for at least 1 year).
* Range minimum of 20 ft. 50ft+ ideal
* Very small, and flat. smaller = better
* Low cost. i know there are often tradeoffs in size/price, but wondering what my options are.
* if there are other ones around, they can operate on several separate channels (no interference)
* Approved usage by FCC, of course





RE: Looking for specialized wireless components
This is just intended to be a data point about a related product.
RE: Looking for specialized wireless components
Dan - Owner

http://www.Hi-TecDesigns.com
RE: Looking for specialized wireless components
I found some things out there. One is pretty close, but quite large. I also found "nRF2402 is the Industry's smallest, lowest cost, lowest current consumption and low voltage supply 2.4GHz RF transmitter. "
If someone wanted to help me design something I could pay them.
RE: Looking for specialized wireless components
Detection of loss of signal with increasing range may not be reliable because the comm link is digital, and is probably not permissible because it implies continuous transmission.
IF you had some _other_ ranging means, that transmitter would be a good way to transmit a signal stating that the threshold range had been exceeded, but it would not be permissible to transmit the measured range at regular intervals.
So, you've solved maybe 1/4 of your problem.
I suggest you investigate ranging by ultrasonics, and if you have line of sight, by triangulation of IR beams, and whatever else you can think of.
Mike Halloran
Pembroke Pines, FL, USA
RE: Looking for specialized wireless components
Thanks
Nestafred.
RE: Looking for specialized wireless components
Dan - Owner

http://www.Hi-TecDesigns.com