![]() ![]() Intro to Bluetooth Low Energyįirst, the bluetooth light will advertise itself using Generic Access Profile, aka GAP, until an app or what have you connects to it. Use the adafruit bluetooth LE sniffer to watch communication between the app and the lightbulb, and see if I can figure out how to turn it on/off, change the color, and set timers. In which case, it becomes time to do some reverse engineering! Or, be me, since I’ve been itching to learn more about bluetooth low energy. So if I want to still use it now, the options are to have an unmaintaned, potential security-risk app on my phone, or not use it. But the phone app to control it is clunky and ugly, and hasn’t been updated since 2018. ![]() I recently got my hands on an old bluetooth lightbulb that was first made in 2015. But sometimes the companies maintaining the app goes under, or decides to not support what you bought anymore, and your fancy smart lightbulb becomes, well, a $35 lightbulb. “Smart” things are the wave of the future! Everyone wants some bit of tech that already exists, like a lightbulb, but now controlled through an app! Or at least, that’s what marketers have decided on.
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