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  • Four-Way Shootout: 433.92Mhz Low-Cost ASK/OOK Transmitter Modules

    As many hobbyists like to experiment with wireless devices, having a good 433.92Mhz transmitter is necessary to optimize the reliability of their systems and their range. While these modules can be finicky to use for data link purposes (and I won't go…

  • 433Mhz Reverse Engineering Part 2 - Burning Questions are Answered

    I couldn't help but wonder, based on the previous posting and the discussion, exactly how did the 1 million combinations come about? Also, what are the functions of the fixed bits? Are they fixed pre-amble as my experience would suggest? Are there more…

  • Woefully Insecure: Remote Control 433Mhz Power Sockets

    It's been a while since I've had the time to post anything around here. Luckily, I had recently just submitted my PhD thesis so that gives me a chance to take a short break and do some of the stuff that I like. Recently, I came across a bunch of cheap…

  • Finding the logic in remote control data

    I have a set of remote controlled power sockets which operate on the 433MHz range and am trying to understand the protocol used between the remote and the sockets. They are sold under the Silvercrest brand, with the 284705 IAN. Using an ESP32 with a RFM69CW…

  • Arduino  FSK Shield (433MHz)

    Dear fellows, We are proud to present a shield that we make, mainly for receiving FSK (and OOK) signals from sensors but not only. The shield comes with a duck antenna and demo examples. FSK signals at 433MHz are very commonly used by consumer electronics…