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How To Decode 433Mhz Low Power Devices Using RTL433 And A RTL-SDR Receiver 

Tech Minds
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Here we take a look at decoding some of the micro transmissions from Low Power Devices on the 433Mhz band using RTL433 software for Linux and Windows.
Github Source: github.com/merbanan/rtl_433
Windows Binary: cognito.me.uk/computing/windo...
Wikipedia: en.wikipedia.org/wiki/LPD433
The SDR Receiver used in this video was a NooElec SMArtee connected to a mobile 2/70 mag mount antenna attached to my 1st floor window.
Purchase the SDR Receiver here: amzn.to/2q7SXsR
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Other equipment I use in my videos as follows:
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NESDR SMArt amzn.to/2HbUENm
NESDR SMArtee amzn.to/2q7SXsR
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NANO 3 amzn.to/2qalBbZ
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ANT500 amzn.to/2GEyvX0
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Discone Antenna amzn.to/2q9LOaI
Vertical Antenna amzn.to/2Iw1NaB
Long Wire Antenna amzn.to/2EogQ3P
SDR Sharp Software airspy.com/download

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14 июн 2024

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Комментарии : 72   
@G7LWT
@G7LWT 5 лет назад
Excellent video and a fascinating topic. Thanks very much Matt!
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
Cheers Darren! :-)
@alzeNL
@alzeNL 4 года назад
time : 2019-09-21 22:14:15 model : Citroen type : TPMS state : dc id : 868e5375 flags : 12 repeat : 1 Pressure : 120 kPa Temperature: 24 C maybe_battery: 65 mic : CHECKSUM Ok - this is geeky fun :)
@angharadhafod
@angharadhafod 2 года назад
I've got this working nicely now, reading from temperature/humidity sensors outside and in the glasshouse. I've got a 433 rain gauge on order. All I need now is a simple way to connect a pressure gauge to my computer (this doesn't need to be external, obvs, so no need for 433 - USB would do, but I'm having difficulty finding something cheap that does the job), and a 433 anemometer/wind direction, and I've got all I could want for a weather station. Pointers to suitable components at sensible prices gratefully received.
@TechMindsOfficial
@TechMindsOfficial 2 года назад
Take a look at the arduino, there are many many sensors available. You can even run them standalone and display the data on an LCD or OLED
@phillipzx3754
@phillipzx3754 3 года назад
Wow...very cool. I have several RTL-SDR dongles that I've used for Ham receivers and such. But these got tossed in the junk drawer when I bought an SDRPlay RSP. So...I grabbed a spare RTL-SDR and low and behold...I'm receiving data! So Mostly weather stations, which is fine as I don't have anything but temp and humidity sensors. If I could find my AC power meter transmission it would be icing on the cake. But I'm not seeing anything but weather data. Looks like I need to hunt for the proper frequency.
@xdanmercerx
@xdanmercerx 7 месяцев назад
AC power meters, at least around here in Michigan, were 3G cellular until recently, power company had to come out to upgrade it to a 4G LTE, as 3G has been phased out.
@lain__d
@lain__d 2 года назад
This is useful. Thank you
@DasIllu
@DasIllu 5 лет назад
Going to try that on my debian box. Thanks.
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
You're welcome buddy, I've been meaning to investigate these signals for a while. I wonder what else it will pick up if left over night! Good luck, but as you can see it's pretty easy to get working. Thanks for watching! :-)
@DasIllu
@DasIllu 5 лет назад
Update: kinda works on my raspberry pi 3. But same as dump_1090 it exits after a few minutes with an error or stops receiving. Haven't had the tenacity to go after the underlying problem yet...
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
I'll try it on my fresh Pi Zero, but it sounds like you may need to re-install the RTL_SDR libraries etc.
@Ianysm
@Ianysm 3 года назад
Hi is it possible to use rtl433 to decode using a websdr as the source...ie pipe the audio tones to rtl433 software for decode?
@colingill9317
@colingill9317 3 года назад
Is there anyway to increase the scanning bandwidth, rtl433 seems very picky about being specific are there any useful switches cheers
@humaxf1
@humaxf1 5 лет назад
Interesting software, thanks for the heads up. I have a cheap dongle atm which works ‘okay’ but have been considering a more stable dongle. What’s the difference between the smart and smartee dongles?
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
They are pretty much the same but the SMArtee has a Bias-T option, which when enabled could power things such as a LNA.
@humaxf1
@humaxf1 5 лет назад
I have an inexpensive LNA from ebay already so the bias-t is useful removing the need for a separate power supply. I'm thinking of long USB extension lead and maybe a j-pole all enclosed in a PVC pipe and have it outdoors, high up for scanning about. I've just downloaded the windows binary. Is there a way to change the frequency? My car fob transmits on 433.950 MHz
@jamesdegnan2638
@jamesdegnan2638 3 года назад
How do I set up the .config file to scan more than on frequency?
@jasonbrodbeck
@jasonbrodbeck Год назад
Trying to run commands in the windows version like changing the frequency. The default freq is not what I need, however nothing comes up when I type into the command prompt?
@markvincent9883
@markvincent9883 3 года назад
all i get is Schrader Electronics EG53MA4 Tire Pressure Monitoring Transmitters . theres better signals higher up the band but i dont know how to change the value
@colingill9317
@colingill9317 3 года назад
Hi ya, was you using a lna cause I sporadically pic things up, but it's not consistent, any help please, thanks.
@SimonVK3XEM
@SimonVK3XEM Год назад
Awesome, I looking for a Windows version of this for hours. I am hoping to access my WX station with RTL433MHz and put it out over APRS. time : 2022-10-29 04:55:16 model : Fine Offset WH24 ID : 222 Temperature: 9.5 C Humidity : 96 % Wind direction: 183 Wind speed: 0.0 m/s Gust speed: 0.0 m/s Rainfall : 44.7 mm UV : 0 UVI : 0 Light : 0.0 lux Battery : OK Integrity : CRC
@DavidsCafe
@DavidsCafe 8 месяцев назад
are there any programs i could use for sdr uno with rspdx?? - i've looked but you probably know the right answer
@rfi-cryptolab4251
@rfi-cryptolab4251 5 лет назад
Super easy install on Ubuntu. Now to find something to decode...
@WarGamerJustice
@WarGamerJustice 5 лет назад
Hi, I looked in SDR sharp and could see the little signals around the 433.920mhz range but nothing on 433.920mhz. This is a problem because the decoding software is looking for signals at 433.920mhz and not around that signal. Does anyone know how I can change the signal in the decoding software? It does say stuff about tuning options on the website but it wont let me type anything into the console. (I'm on windows btw)
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
Open a command window, navigate to the folder where you have downloaded RTL433 and then type RTL433 -f (then the frequency)
@WarGamerJustice
@WarGamerJustice 5 лет назад
Type the command into CMD?
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
I'll make a short video showing how to start RTL_433 using command line commands, hopefully have it up in a few hours. Thanks, Matt
@WarGamerJustice
@WarGamerJustice 5 лет назад
Tech Minds Thank you so much!
@WarGamerJustice
@WarGamerJustice 5 лет назад
Hey Matt hows the video coming along? I'm sorry to rush you but I'm so excited to try and decoding these signals around me!
@EpicLPer
@EpicLPer 5 лет назад
Is it possible to do a replay attack on car key fobs and unlock cars that way?
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
Well, you’d need some way of transmitting and an SDR receiver does not TX, unless it’s something like a HackRF One. It may be possible to record with SDR-RTL and then use a pi to transmit, something I’m also interested in.
@chrisgicky2215
@chrisgicky2215 5 лет назад
EpicLPer same thing i thought
@Pradeep-vl5yf
@Pradeep-vl5yf 5 лет назад
Tech Minds can you do it in youtube..Eagerly waiting
@BruceBarnett
@BruceBarnett 5 лет назад
You can use a HackRF, Yardstick One, or Lime SDR to transmit.
@ChrisMyers2000
@ChrisMyers2000 5 лет назад
Possible yes, but maybe not in the way you're thinking. A simple replay attack will only work if you are able to record the unlock signal when out of range of the cars receiver and then play the signal back....but that scenario only realistically works if you already have access to the key so whats the point? If a subsequent key press is made and received by the car, the previous code you recorded is then locked out and becomes useless. The other possibility has been termed "Roll-Jamming", and mainly developed and demonstrated by Samy Kamkar. look him up on youtube, its very interesting.
@chrisgicky2215
@chrisgicky2215 5 лет назад
Neat.. but can you record and rebroadcast those signals ?
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
If you had a way to transmit then yes, like a replay attack.
@Gledge1
@Gledge1 5 лет назад
hi there, on sdrsharp i can see lots of blips in the 433.920mhz but in rtl433, nothing shows. any ideas???
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
Try starting RTL433 with the -G switch, that should allow all possible devices. You might need to leave it on for a few hours.
@Gledge1
@Gledge1 5 лет назад
Tech Minds would appreciate a video. I’m running on windows and don’t see any options or settings...
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
Ahh yes, I have recorded a video but just need to edit it. In short, it’s quite easy. Have you used the command prompt before on windows? Just type CMD into cortana search window and a DOS window will open. Use the DIR command to navigate to the folder where you downloaded RTL433. Once you are in that folder, you can type RTL433 -F 933950000 for example, to set the freq to 933.950 MHz. If you don’t know how to use DOS commands then it’s probably best you learn how to use it first :) let me know how you get on.
@Gledge1
@Gledge1 5 лет назад
Tech Minds, dude you are legend! I will crash course on cmd in the morning and should be getting results in the afternoon. Will keep you posted... Look forward to your next video!
@Pradeep-vl5yf
@Pradeep-vl5yf 5 лет назад
Great...
@Hex-Mas
@Hex-Mas 4 года назад
What SDR S/W are you using? It almost looks like SDR play.
@urmomsahoe1
@urmomsahoe1 5 лет назад
I downloaded the windows version and as soon as I start the program is runs a some code and then the window closes. I tried both 64 and 32 bit versions and both do the same thing.
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
You have to run the windows version, in fact all versions, from the command line. Simply open up a command prompt and then navigate to your RTL433 folder. Then type RTL433 -G
@davidbeiler6364
@davidbeiler6364 5 лет назад
ccan you change the frequency to 462? which might be a smart meter?
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
Yes, you can specify the frequency in which it scans, but whether or not it will decode smart meters is another story
@cemtanca2286
@cemtanca2286 5 лет назад
hello. can ı use that decoder program for 451mhz
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
Yep, just use the -f command switch to change the frequency
@cemtanca2286
@cemtanca2286 5 лет назад
@@TechMindsOfficial thank you.
@thehorse169
@thehorse169 3 года назад
down loaded 433 64 bit running win 10 extracted files but when i click rtl 433 application a cmd window pops up but immediately closes any ideas thanks for great videos ah sorry i have seen previous post
@kenny7479
@kenny7479 2 года назад
I also have this issue. Did you ever find a fix?
@kaledov
@kaledov 5 лет назад
The windows program doesn't read any signals on my computer for 433 at 64 or 32 bit versions
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
Perhaps you don’t have any compatible devices around your area, or maybe you need a bigger antenna.
@wildbillx
@wildbillx 5 лет назад
Question- after downloading and unzipping I run the exe file and get no supported devices found. I am using a nooelec dongle that works fine while running unitrunker and sdr#. Any ideas how to make the program see it? Windows 7
@TechMindsOfficial
@TechMindsOfficial 5 лет назад
Sometimes the dongles usb channel can get locked, try unplugging the dongle and back in again.
@Martinpacker
@Martinpacker 3 года назад
I managed to get the Windows version working but as I live in a small village there is not much to receive. I know it's working because I am picking something called "oil watchman"
@davidjones388
@davidjones388 2 года назад
What freq did you use?
@Martinpacker
@Martinpacker 2 года назад
@@davidjones388 The software sets the frequency to just under 434Mhz and that is usually where I leave it but other frequencies can be typed in.
@thehorse169
@thehorse169 3 года назад
'RTL433' is not recognized as an internal or external command, operable program or batch file.any help Thanks
@javib8970
@javib8970 4 года назад
using windows 10 x64 , the command console shuts down before starting to sniff anything
@TechMindsOfficial
@TechMindsOfficial 4 года назад
Does the command console actually close down? Like it disappears? Maybe it’s crashing. Try running an “admin” console.
@javib8970
@javib8970 4 года назад
@@TechMindsOfficial i tried also run as admin, no luck. It "dissapears" indeed, first shows up and after running some code lines suddenly shuts down
@javib8970
@javib8970 4 года назад
i launched it from the cmd console and shows [...]Registering protocol [42] "Honda Car Key" Registering protocol [43] "Fine Offset Electronics, XC0400" Registering protocol [44] "Radiohead ASK" Registering protocol [45] "Kerui PIR Sensor" Registering protocol [46] "Fine Offset WH1050 Weather Station" Registering protocol [47] "Honeywell Door/Window Sensor" Registered 47 out of 69 device decoding protcols No supported devices found. Im using a hackRF One cheapest version (it works with SDR console and hackrf_spectrum analyzer)
@ralph9987
@ralph9987 3 года назад
You lost me at "compile" lol 🤔🤔🤔
@TheShorterboy
@TheShorterboy 5 месяцев назад
yeah this no longer works
@alexandregaspar5571
@alexandregaspar5571 3 года назад
BONJOUR CA MARCHE
@jesus_tenorio
@jesus_tenorio 3 года назад
New URL for Windows binaries. bintray.com/chzu/dist/rtl_433#files
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