One of the issues you’ll quickly run into as you tackle more and more complex projects in your electronics hobby is the need to run things at different speeds. As time is the essence of digital logic – in fact, logic itself relies on having discrete periods of time in which to switch bits between […]
arduino
How to Produce 640×480 Color VGA Video From an 8-Bit Arduino!
Update: I bought some components and broke my “use what I currently have” rule to eliminate two pieces of silicon from the original build. I’ve attached an updated Arduino VGA schematic if you would like to build the smaller version – the code doesn’t change. Let me set this up for you: most 8-bit AVRs […]
How to Double Clock Frequency Using Only Digital Logic
I recently rotated hobbies back to microcontrollers and electrical engineering, and one of the projects I’ve been working on required a doubling of clock speed from an Arduino Nano, which has an Atmel 328p running at 16 MHz on-board (here’s a hint: my target was 25.175 MHz). I’m going to explain in this piece how […]
Build Your Own Real Time Frequency Analyzer And Christmas Light Controller!
I built an Arduino real time frequency analyzer with a microcontroller which doubles as a Christmas light controller. You can take line in from any source (and depending on the input voltage) in one of 8 audible octaves and activate a relay providing AC power to a plug to light up a strand of Christmas […]