Reading signals

with your flipper zero, you can read, save, and emulate different types of remote controls with known protocols there are remote controls that work on protocols that flipper zero doesn ’ t know yet signals from these remotes can be recorded in raw format, saved, and replayed with the read raw function we constantly update and improve the flipper zero firmware with the help of our community to make your contribution to helping flipper zero support more remotes, you can leave information about your remote https //forum flipperzero one/t/my remote isnt supported how to add new sub ghz protocol in flipper zero/2033 on the forum on this page, you ’ ll learn how to read and emulate remote controls, determine a remote ’ s frequency, and receive signals at unknown frequencies this article also explains what to do if flipper zero is unable to read the signal with default settings and provides an overview of the bin raw and lock keyboard features reading procedure in read mode, flipper zero reads and decodes demodulated signals from remote controls based on known protocols if the remote ’ s protocol is static, flipper zero can save and send the signal to read and save the signal from your remote control, do the following go to main menu > sub ghz press read , then press the button on the remote control you want to read when the signal is captured, press %ok% ok , then press save name the captured signal, then press save configuration menu in this menu, you can switch frequencies manually and in hopping mode, switch modulations manually, and lock the keypad while scanning for signals to open the configuration menu, on the scanning screen, press config you will see the following frequency configuration you can switch frequencies at which flipper zero receives signals in the configuration menu , by pressing %left% left or %right% right you can manually set frequencies from the list to read the signal correctly, it is necessary to determine the frequency of the remote for that, you can use the frequency analyzer feature frequency analyzer when analyzing, flipper zero is scanning signal strength at all the frequencies available in the configuration menu flipper zero displays the frequency with the highest received signal strength indicator (rssi) value, with signal strength higher than 90 dbm to determine the remote ’ s frequency, do the following place the remote control very close to the left of your flipper zero go to main menu > sub ghz > frequency analyzer on your remote control, press and hold the button you want to analyze review the measured frequency value on the screen by pressing the %left% left or %right% right button, you can go to the second screen that shows up to 15 measured frequencies on the second screen, you can sort measured frequencies by pressing the %ok% ok button hopping between frequencies to receive a signal at an unknown frequency, use hopping mode in this mode, flipper zero switches quickly between the available frequencies and measures the signal strength once the signal strength exceeds 90 dbm, switching stops and flipper zero receives the signal at that frequency for one second, then switching between frequencies resumes to scan for signals in hopping mode, in the configuration menu , set hopping to on in hopping mode, you can also manually switch modulations modulation configuration to capture the signal from the remote control, you need to configure the correct modulation settings on your flipper zero because flipper zero is not a software defined radio, you need to configure the right modulation before scanning the signal, otherwise, you will not receive the correct data flipper zero supports amplitude (am) and frequency (fm) signal modulations in the configuration menu , by pressing %left% left or %right% right , you can manually set signal modulations from the list am270 amplitude modulation with the bandwidth of 270 khz am650 amplitude modulation with the bandwidth of 650 khz (set as default) fm238 frequency modulation with the bandwidth of 270 khz and the deviation of 2 380371 khz fm476 frequency modulation with the bandwidth of 270 khz and the deviation of 47 60742 khz bin raw this option allows the processing of raw signals that weren ’ t decoded during the reading process the processing involves eliminating background noise, removing repeating signal segments, and correcting timing errors to use this feature, you need to enable the bin raw option manually additionally, it is important to verify that the frequency and modulation parameters align with your remote control for optimal functionality lock keyboard this function allows you to lock the keypad while your flipper zero is scanning for signals to lock the keypad, in the configuration menu , select lock keyboard and press %ok% ok sending signals flipper zero can send saved signals that are recorded at frequencies that are allowed for transmission in your region to send a saved signal with flipper zero, do the following go to main menu > sub ghz > saved select the signal, then press emulate press send to send the saved signal to learn more about regions and allowed transmitting frequencies, visit the frequencies page listening to walkie talkies did you know that you can listen to analog walkie talkies with your flipper zero’s buzzer? while not originally intended, the sub ghz read and read raw features enable this functionality to start listening to a walkie talkie go to main menu > sub ghz select read — to listen only or read raw — to listen and record go to config set frequency to the frequency of the walkie talkie you want to listen to set modulation to fm238 set sound to on (optional) if you’ve selected read raw , you can also configure rssi threshold to only record signals that exceed the set signal strength level learn more about rssi threshold configuration press %back% back if you’ve selected read raw , press %ok% ok to start listening all set up now, if the person at the other end speaks loudly enough, you’ll be able to hear their voice via your flipper zero’s buzzer