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Some time ago I read about the cheap and easy to use ESP8266 WiFi modules and I had to have a couple of them. So I ordered two ESP-01 modules. At the time I had no idea what to do with them, but I was sure that this was only a matter of time. Later, I discovered that high-power LEDs can be had for a ridiculously low price from China, so again, an impulse purchase was the inevitable consequence. Of course it was soon clear that I had to combine both…”

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