Videodrone: An analog synthesizer with LED video screen #MusicMonday
Thank you to Chris Williams for sending in his great analog project. Check out more info here.
Videodrone is an analog synthesizer designed to produce a wide variety of droning audio textures including deep pulsating detuned oscillations, sweet shimmering saw wave choruses and thick, grinding low-end tones. The versatile audio section is mated to an LED matrix based video screen that uses the audio output to create dancing animated shapes and slowly evolving patterns.
Two VCOs make up the core of the audio output. These can be augmented by the video clock which acts as an independently tuned sub oscillator using one of six frequency-divided square waves. Using the clock as an audio source allows you to hear the musical relationships used in creating visual patterns on the video screen. The two LFOs allow for low frequency and audio rate modulations of the VCOs and VC Clock for even more complex patterns and textures of light and sound.
The 64 LEDs that make up the LED matrix are scanned sequentially at a rate set by the voltage-controlled clock. The brightness of the LEDs are controlled by the VCOs instantaneous output voltage similar to the way an analog TV is driven. By manipulating the relationship between the clock and VCO frequencies you can essentially freeze the audio output turning invisible waveforms into patterns and shapes.
More than just a music visualizer, Videodrone is more like a lo-fi analog video synthesizer allowing you to carefully control everything you see and hear. It even has some benefits over a TV based video synth. Since TVs trace through more than 15,000 lines per second, you often end up using frequencies near or above the upper limits of human hearing. Videodrone’s significantly slower line rate lets you meld audio and video in ways not possible with most video synths.
We are angry, frustrated, and in pain because of the violence and murder of Black people by the police because of racism. We are in the fight AGAINST RACISM. George Floyd was murdered, his life stolen. The Adafruit teams have specific actions we’ve done, are doing, and will do together as a company and culture. We are asking the Adafruit community to get involved and share what you are doing. The Adafruit teams will not settle for a hash tag, a Tweet, or an icon change. We will work on real change, and that requires real action and real work together. That is what we will do each day, each month, each year – we will hold ourselves accountable and publish our collective efforts, partnerships, activism, donations, openly and publicly. Our blog and social media platforms will be utilized in actionable ways. Join us and the anti-racist efforts working to end police brutality, reform the criminal justice system, and dismantle the many other forms of systemic racism at work in this country, read more @ adafruit.com/blacklivesmatter
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.