Old infrared remote controls can be a great way to interface with your projects. One of [AnalysIR’s] latest blog posts goes over the simplest way to create an Arduino based IR receiver, makin… ...

In my case I have used only 3 x 330Ω resistors, 3 leds and a TSOP4838 IR receiver module. You must check the datasheet before use the IR module to see which pins connect to the power supply and which ...

We use LEDs to generate (very high frequency) radio waves and photo-resistors to take the place of radio antennas. These ideas are identical to concepts used in cell phones and Wi-Fi. Initially we ...