[Atomic14] bought some wireless LEDs that get power from a base station. They were extremely neatly packaged, however — we like it — he took one apart as well as made his own versions. They may not look as polished, however they work as well as they are undeniably cool.

The LEDs work by getting power from an induction coil. when you have power, illumination up an LED is no huge deal. reverse engineering discovered the transmitter sends 217 kHz into a 2.2 mH inductor. A capacitor resonates the coil as well as drives the connected LED.

Some experiments discovered that the circuit might supply about 2 mA -3 mA of current. [Atomic14] utilized two LEDs to get work out of each half of the AC waveform. He likewise dissects the transmitter, so you might roll your own there, too.

What would you do with a wireless LED? perhaps illumination in a design screen or a checkerboard? We wondered if you might utilize two or more power frequencies to signal (for example, 200 kHz lights a red LED however 250 kHz lights a eco-friendly one)? The original transmitter was fixed frequency, however if you utilized a microcontroller, it would be simple to make it frequency agile. In the end, there is an economic analysis of building these versus buying them ready-made, however all of us understand that isn’t always a decision that is strictly based on dollars. The industrial versions did look a bit nicer, however with surface install components, even the diy version might most likely look a bit cleaner.

We’ve really seen these before. We wondered if you might draw power from something that was transmitting anyway.