That's both the simplest and fanciest UHF CW receiver ever! I love chip of the day!
OpossumPiper
So mystery chip of the day is an MCU. Find the VCC and ground pins and ask ChatGPT to locate all MCUs with eight pins and that power configurations.
rogerp
LPD433 devices are everywhere. Even out in the country where I live if I look at the waterfall display on my Icom IC-9700 on that portion of the band it's just filled with short data burst 24 hours a day. Been a while since I dug into the FCC reg's but I seem to remember the power limit for unlicensed LPD devices was 10mW.
mikesradiorepair
rtl-433 software demodulates a ton of stuff 433/315 devices like tire-pressure sensors, door/window/motion sensors, weather-station sensors and more. Usually uses an rtl-sdr dongle. Not sure if it can directly grok demodulated OOK.
GaijinPaul
According to the EPA, lithium-ion batteries are a threat to landfills because of their ability to start fires. They didn't mention other possible reasons for recycling like the presence of other potentially hazardous metals like chromium. This seems like flamability wouldn't be a serious problem if the battery was really small (likely the case here) or if was completely discharged prior to disposal...
ats
One of your neighbors have a remote weather station in the backyard?
jrkorman
Everything here in OZ just about runs on 433.92 meg. My car remotes, the door bell, a street of electric gate openers, retail weather stations, remote power sockets and even the start gun at the running track.
zukjeff
Why didn't you use the pulse trigger to capture the data? That 'scope has the ability to trigger on a negative going pulse with a specified pulse width range. And just for the heck of it how about looking at the data using the RS232 decode?
And maybe I should stop making useful suggestions. - grin
tfrerich
I think those reactors are for impedance matching to the antenna.
byronwatkins
330 KHz bandwidth! Can't get good sensitivity listening to all that noise!
chrisscott
Do you have any car in your garage? Maybe it's a TPMS (Tire Pressure Monitoring Sensor) sending data on 433Mhz
edwardpacman
"a hand pull of farts?" - did I hear that correctly? 😂😂😂
stewartclark
Landfilles? Doesn't all used electronics get treated at an E-waist recycling facility?
We have done that for many years.
geirendre
Just make a little bit QRO around that frequency 😁🤭
tvelektron
Man are these things a folly and complete waste of resources. But at least it makes for an interesting video 🙂
justinmijnbuis
How would you make a directional antenna which worked at 433MHz?
jspencerg
Hello sir. Can you make tutorial how make jammer signal cell phone
