We proudly present a simple project about making a wireless microphone at home. It can be used as a spy gadget by broadcasting audio picked from a room you leave that microphone in. We wish you to have a lot of fun with this miniature FM transmitter!
This is a 5V mini power supply unit. It is capable of driving an 1A load at excellent line and load regulation. The circuit is based on the LM2575N-5 step-down switching regulator.
This is a real time LED Audio Spectrum Analyzer. You can embed this unit in an audio system or use it as a stand-alone unit. The LED Spectrum Analyzer can display a real-time bar-graph spectrogram...
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