The chances are that many of you will have made an FM “bug” style transmitter, a simple one-transistor oscillator usually driven by a small electret microphone. It’s also relatively ...

This Bluetooth audio transmitter comes in at $79, but you never have to worry about charging again as it powered totally via its USB power. Here's another Bluetooth transmitter with tons of ...

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Simple surface 2 channel RC transmitter for cars, boats and tanks. The hardware includes nRF24L01+ transceiver and ATmega328P processor with OLED screen. Telemetry monitors receiver voltage and "fake" ...