RF Remote Made Easy
The 433 MHz spectrum is a little bit of an oddball. It’s one of the few areas of the radio spectrum which is nearly universally unlicensed, meaning as long as …read more Continue reading RF Remote Made Easy
Category Archives: 433 mhz
Decoding 433 MHz Signals With Arduino & Raspberry Pi
433 MHz radio signals are all around us. They’re used for things like smart power plugs, garage door openers, and home weather stations. Decoding these signals can allow you to …read more Continue reading Decoding 433 MHz Signals With Arduino & Raspberry Pi
Low-Cost 433 MHz Door Sensors Get Open Firmware
It’s an unfortunate reality these days that if you see a cheap piece of consumer electronics, there’s a good chance its only cheap because it’s designed to lock you into …read more Continue reading Low-Cost 433 MHz Door Sensors Get Open Firmware
Unintentional Emissions
First, it was the WiFi router: my ancient WRT54G that had given me nearly two decades service. Something finally gave out in the 2.4 GHz circuitry, and it would WiFi …read more Continue reading Unintentional Emissions
Teardown: Impassa SCW9057G-433 Alarm System
This series of monthly teardowns was started in early 2018 as an experiment, and since you fine folks keep reading them, I keep making them. But in truth, finding a …read more Continue reading Teardown: Impassa SCW9057G-433 Alarm System
ESP8266 Adds WiFi to a 433 MHz Weather Station
There’s no shortage of cheap weather stations on the market that pull in data from several wireless sensors running in the 433 to 900 MHz range and present you with …read more Continue reading ESP8266 Adds WiFi to a 433 MHz Weather Station
ESP32 Adds New Features To 1990s Home Alarm System
Given how fast technology is progressing, some consumer gadgets lend themselves to being replaced every few years. Mobile phones are a particularly good example of a device that you probably won’t want to hold onto for more than 4 years or so, with TVs not far behind them. On the …read more
Continue reading ESP32 Adds New Features To 1990s Home Alarm System
433 On A Stick
Cheap 433 MHz wireless switches are a tempting way to enter the world of home automation, but without dedicated hardware, they can be less easy to control from a PC. That’s the position [TheStaticTurtle] was in, so the solution was obvious. Build a USB 433 MHz transceiver.
At the computer …read more
433 On A Stick
Cheap 433 MHz wireless switches are a tempting way to enter the world of home automation, but without dedicated hardware, they can be less easy to control from a PC. That’s the position [TheStaticTurtle] was in, so the solution was obvious. Build a USB 433 MHz transceiver.
At the computer …read more
DIY ESP32 Alarm System Leverages 433 MHz Sensors
There’s a huge market for 433 MHz alarm system hardware out there, from PIR motion detectors to door and window sensors. If you want to put them to work, all you need is a receiver, a network-enabled microcontroller, and some code. In his latest video, [Aaron Christophel] shows how easy …read more
Continue reading DIY ESP32 Alarm System Leverages 433 MHz Sensors