Hi. I bought one of these RXB6 receivers and i cant get it to work with my arduino boards and car key. i also have this remote unit from an old weather station which works, but my RXB6 receiver doesnt find any signal. the piece of code i use is the following . Oh and yes , I took into consideration that interrupt 0 translates to pin 3 on the pro micro(leonardo)
Hello
A couple of tips to get your help rolling.
As is often said, have a look at the guides to using the forum before you start.
One of the things that is often criticised is to put your code in quotes (it makes it not so easy for people to run your code, and depending on how it is formatted, can introduce annoying stray characters). Use the insert code thingy (</>) which is top left on the reply box formatting strip. The other thing that would put me off is your referring to things like "these receivers", "this remote" - you need to actually include some links or whatever to what you are referring to so that others can see what you are talking about. The links and insert images etc. are on the same formatting strip as the quotes.
I'm not sure where car keys or remote from old weather station come into it.
You basically need to be more specific in the way you explain the problem and what you have done in the way of background research.
I really haven't a clue what you are hoping to achieve
I'm sure that if you "tidy" things up a bit, you will get the advice you need.
arduino: pro micro (atmega 32u4, arduino leonardo)
transmitters ive tested so far: opel astra key remote(433Mhz), garage door remote key (RMC-519A, some chinese pcb board), and this weather station remote sensor(THRN122N). below are some pics. first shows the remote transmitters, second shows my pro micro hooked up with the RXB6. the only thing i can confirm is that when i press the car key buttons, i can measure a voltage change on the antenna pin, meaning that the receiver works at the specific frequency. Data pin is hooked up to pin 3(pin that translates to Interrupt no. 0 for the pro micro). i tested almost every rf library out there, but i dont get any readings on the serial monitor.
one thing that i found while searching for info about the temperature remote is that it uses manchester encoding according to this source oregon sensor. it seems to be the same board just different brand. anything else that i forgot to mention, just ask
Note that the standard Arduino libraries like RC-Switch will not decode the Oregon Scientific weather sensors, but Arduino code specific for those sensors is available.
There is literally an infinite range of possibilities for gadget signal encoding, and just about every manufacturer invents their own.
I think 433,92mhz is the exact frequency.the quartz on mine says 433 . As i said i was able to measure voltage on the antenna which means it receives. Do 0.92 mhz make a difference at all?
A little update. I put together the circuit suggested in this post Capture IR and RF
and recorded the push of the car key buttons. it successfully receives the signal and i am able to figure out which part represents the actual signal. Pressing one button sends 3 times the same sequence of square waves. One such sequence is presented in the pictures below( i had to split it in 2 halves since it was quite long). I also calculated a "long on" of about 300µs and a "short on/off" of about 180µs @ 44.1 kHz. Is this a manchester encoding? i thought of assigning the transition of "long on"--> "short off" a 1 and the "short on" --> "short off" a 0, but there are parts(first picture, second half of the wave) in which 2 "short on"s appear on right after another.
Modern wireless car keys are encrypted, and usually use a rolling code, so the same command is never sent twice. In such a case, your chance of decoding the information is essentially zero.
Are you absolutely certain that two successive button presses yield exactly the same sequence and timings of ON and OFF?
Hi. yes i read that the car key remotes might change the encoding every time you press them. it was just a test so i get familiar with the sniffing circuit. what i really want to do is decode the remote sensor data so i can pair it with an esp8266 and the 433mhz receiver. here is what i get from the remote sensor.
audacity project :https://www.dropbox.com/s/ckmytt0cmbefvdy/sensortest.rar?dl=0
jremington:
Modern wireless car keys are encrypted, and usually use a rolling code, so the same command is never sent twice. In such a case, your chance of decoding the information is essentially zero.
Are you absolutely certain that two successive button presses yield exactly the same sequence and timings of ON and OFF?
