I have previously published the first part of this topic which is about interfacing with a RF-based home security system. Later on, I found a relatively cheap 220V relay that works on the same 433 MHz frequency and decided to purchase one from AliExpress to try out. It was a…


Featured image showing a RF transmitter and receiver against a background of colorful jumper cables

While researching around on how the small sensors on doors/windows and motion detectors work, I found out that they are based on a radio frequency protocol which is typically on the 433 Mhz, 315 MHz or 868 MHz bands. …


In 2020, when most of us were stuck inside homes, I stumbled upon an old WiFi camera that I had bought back in 2017 from a site with a questionable name. The problem with this camera was that it’s not a closed-circuit system and had to connect to a third-party…


දැනුම් දීමක්: මම Orange/Orel සමාගම් සමග කිසිදු සම්බන්ධයක් නොමැති අතර, මෙම ලිපිය ලිවීම සඳහා ඔවුහු කිසිදු අනුග්‍රහයක් කර නොමැත. සියලු විස්තර මවිසින්ම සොයාගත් අතර මෙම භාණ්ඩය මිලදී ගනු ලැබුවේ මාගේම මුදලින් ය.

මෙහි පින්තූරවල සඳහන් වචන ඉංග්‍රීසි භාෂාවෙන් තිබීම ගැන සමාවන්න.

This article is also available in English language. …


Disclaimer: I am not affiliated with Orange/Orel and they have not sponsored me by any means in writing this article. I have done my own research and spent my own money to purchase the items mentioned herein.

This article is also available in Sinhala language. …

Binesh Amarasekara

Coffee-to-code converter, passionate about art and music

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