Hi, I am trying to learn about incorporating RF wireless transmission into projects. I am relatively new to Arduino (which I would ultimately like to use in a project) though I have some experience with BASIC Stamp, however my questions are with the wireless part even before we hook it up to the Arduino. Can anyone help me understand some concepts... Using a simple rx /tx set like the rx433/tx433,I am trying to understand... By themselves, can these modules do anything (for instance, would sending a simple high or low signal -say via a pushbutton - cause the receiver output the same high or low signal? I have read that people have no luck with that so encoder/decoders are needed... Are these "needed"??? My understanding of the encoder chips used in conjunction with the tx/rx moduals is that they encode the actual signal sent over the air (like for security??? Or to prevent stray signals from making the receiver output flicker high and low???) But at the end of the day, the signal being sent into the encoder (simple high or low via pushbutton or string of digital pulses from a microcontroller) is still what goes in and comes out on the other side of the receriver's decoder? If the encoder/decoder does what I am thinking, the I am wondering, if security or reliability is not a concern (say as a hobbiest experimenting) then why should the encoder and decoder be necessary? Also, if using an Arduino on either side of the wireless link, would an encoder/decoder be necessary or would that be done through coding?? My first baby step is to make a transmitter that can turn on and LED on the receiver with a push of a button... After I get that to work, I was hoping to connect to an Arduino and actually control things with a transmitter. Thank you in advance for the lessons!
