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Drew

Drew

Waveform display on SA-01 prototype

Live waveform display (aka oscilloscope)

One of the nice things about building a digital synthesizer is that everything is just code. My code is responsible for generating a series of integers that my DAC turns into audio, but I can do a lot of other things along the way as long as I can deliver
Jun 3, 2025 3 min read
Prototype synthesizer with IBM VGA font text

SSD1306 display drivers and font rendering

When I first started implementing the SSD1306 OLED on my prototype, I grabbed the quickest and easiest to implement driver I could find - a driver Espressif shipped as part of ESP-BSP that has since been removed. It worked great, updated the screen at about 40 hz, and was very
Apr 14, 2025 5 min read
What am I making?

What am I making?

For a little over a year now, I've been building a digital synthesizer. I'm a musician & artist so I've spent a lot of time with synthesizers but never tried building one of my own. I find the history of synthesis fascinating and spent
Jan 17, 2025 2 min read
dev

Switching USB controller at boot on ESP32-S3

I'm building a digital synthesizer based on the ESP32-S3 MCU (using the ESP-IDF framework) and have been meaning to start a dev blog for a while. I couldn't figure out a good first post so I figured why not just start somewhere - let's
Apr 13, 2024 2 min read
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