I like to create sound. It’s one of my favorite things to do with electronics. To create sound you need to make a circuit that creates a voltage that goes up and down very fast.
In this short tutorial, you will learn how to build an Arduino Theremin. You only need three components plus the Arduino, wires, and breadboard. Use the breadboard diagram or the video below to see how to connect everything.
We talk about a custom NAS build that hooks up a screen and buttons to an Odroid, Øyvind has been developing for nRF52-something and finally we discuss some basic electronic stuff that we ought to know.
The difference between Alternating Current (AC) and Direct Current (DC) is simple: AC vs DC comes down to how the current flows. AC is a current that alternates its direction. It goes back and forth continuously. DC is a current that flows in one direction. Current flow in a DC circuit: For example, a battery […]
We talk about the new Arduino Polenta and how DisplayPort over USB C might be implemented. We also talk about the $42 Etepon scope vs the $3500 Siglent SDS5034x scope.
I put together this Voltage Unit (VU) meter using LEDs on a breadboard the other day. It only has 4 LEDs, but can easily be expanded to more: It’s basically a simple display for showing a value. It’s originally for showing signal level in audio circuits, but there’s no reason you can’t use it to […]