Be neat to see the transmitted signal, but the RF runs at 433.92 MHz, hopelessly high for seeing on my 200 MHz scope.The transmitter transmits an address unique to it. The receiver receives and remembers the address and after that only responds to the paired transmitter.
Most likely many transmitters share the same addresses. I am skeptical about the use of the word "endless" in the sentence below supplied by AlbertHall. Not that I am questioning Albert, just the contents of the quote.
"The ability to add additional outlets and remotes is endless."
OK that's interesting, I've heard of all this "software defined radio" stuff for some time but taken pretty much no interest in it, but it does lookThey don't actually modulate the carrier it's simply OOK transmission. Serial data is transmitted by the presence or absence of a carrier wave.
Check out RTL_433. With a cheap (really cheap) RTL-SDR dongle you can decode the switch commands, and with SDR# and the same dongle, you can watch the modulation on a waterfall display.Be neat to see the transmitted signal, but the RF runs at 433.92 MHz, hopelessly high for seeing on my 200 MHz scope.
I could use a 433.92 MHz receiver of some type and then see what the modulated signal looks like, but that too sounds beyond my abilities.
|Thread starter||Similar threads||Forum||Replies||Date|
|Radio controlled lighting by using VHF PTT||General Electronics Chat||35|
|J||How to do a radio controlled helicopter||Homework Help||1|
|J||How to make a simplest radio controlled toy||Homework Help||5|
|K||Up for review: Build an Arduino-Controlled AM/FM/SW Radio||AAC Contributors Forum||0|
|J||Help configuring radio controlled h bridge solenoid circuit||General Electronics Chat||3|
by Jake Hertz
by Luke James
by Luke James