[Reza’s] methodical investigation of this remote controlled outlet let him patch in with an Arduino using a 433 MHz transmitter. This is a single-device unit, but the techniques used here should allow ...

One fun and cool thing for ardent audio folks to do is switch the volume of an audio amplifier between levels on a digital panel. Here’s a simple project to help you understand the technology behind ...

This Arduino based MIDI volume pedal is capable of reading the position of an analog pedal, translating the A/D value into the proper numerical range, and sending MIDI signals to a synthesizer. A ...

Ever notice how much louder commercials are than the actual program you're watching? Every time a break hits, it's like they're yelling at you about buying their product. Instructables user techbitar ...

Arduino-fanciers Oomlout have put together a neat control box for the popular prototyping board, complete with five potentiometers and three switches. There's also a software app that can monitor the ...

The worst thing about a volume knob is that, having connected it to a computer, it might be wrong: if you’ve manually altered the volume settings somewhere else, the knob’s reading won’t be correct.

Remember those cheap remote control jammer toys that you could use to stop folks from changing the TV channel? One Instructables user has created a more advanced version, allowing you control of more ...