I’m looking for a small kit to do send a signal wirelessly to close a relay. I have no programming knowledge so it has to be simple.
Basically the idea is this:
A sensor’s analog voltage output is compared to a reference voltage at a comparator and the 5V output of op-amp comparator goes to the wireless transmistter to send a signal out and the receiver upon receiving outputs a 5v to close a relay.
Is this type of kit for the wireless transmission and reception available?
It is something like a garage door opener i assume.
i usually think how stuff can be done easily (as i am very lazy). in your case, can i suggest just using off the shelf RC tranmitter and receiver used in toy radio controlled cars. You can buy small RC cars running at 27mhz radio fairly cheaply. inside most have a TX2B and RX2B IC encoder and ddecoder IC. you just need to connect the comparoator output to one of the input pins of the TX2B IC. this will send signal to RX2B (ex, RC CAR GO FORWARD). in the RX, a pin will go high relatve to the code. So just connect your Relay to that pin using a mosfet or something.