Simple FM Radio

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https://www.electronics-lab.com/simple-fm-radio/

by electronics-diy.com: This is one of my favorite radio builds just because of how simple it is and how well it is able to pick up a lot of FM radio stations. I have browsed the world in search of a one transistor FM receiver. I have seen a couple but they were always attached to […]

Decoding and sending 433MHz RF codes with Arduino

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https://www.electronics-lab.com/decoding-and-sending-433mhz-rf-codes-with-arduino/

by liwenyip @ instructables.com: In this tutorial I’ll show you how to use an Arduino to decode signals from RF remotes, and re-send them to remotely control some mains switches and a garage door. Decoding and sending 433MHz RF codes with Arduino – [Link]

Simple Infrared Barrier

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https://www.electronics-lab.com/simple-infrared-barrier/

by Maurizio @ dev.emcelettronica.com: Although a remote control is not so difficult to design and build, there is an even simpler option: the IR barrier. This consists of a constant IR signal permanently going from an emitter to a receiver, both of them being in two different places (a few meters apart). When an obstacle comes […]

Wireless Transmitter System

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https://www.electronics-lab.com/wireless-transmitter-system/

This wireless project is a power transmission system, it works on the principle of magnetic induction. This Wireless Charging system works as the digital switched mode power supply with the transformer, which is separated into two parts: The transformer primary coil is on the transmitter, working as the transmitter coil, and the transformer secondary coil […]