Introduction In this tutorial, we’ll build a real-time color monitoring system: Hardware: APDS-9960 color sensor connected to a CircuitPython-capable board. CircuitPython: Script to connect to Wi-Fi, read RGB values, and publish JSON payloads to the sensors/color MQTT topic. macOS SwiftUI…
Turning a MIDI File into Arduino Music with PlatformIO 🎵 Project Overview In this project, we created a simple workflow to convert a standard .mid MIDI file into binary note data suitable for playback on an Arduino Mega 2560 using…
I’ve spent the past few days exploring a project that allows me to display text on an LCD using a Raspberry Pi. We will be using Python in this post, so familiarity with Python will be useful. First, make sure…
My retro computer is an SC126 designed by Stephen C. Cousins. It has two serial ports. I am using 1 serial port to interface with my retro amber monitor. That leaves the second one open to use as a way…
About seven or eight years ago, I started down a path to create my own synthesizer using discrete electronic parts like CMOS chips, resistors, capacitors, and the like. Early on, I discovered the “Lunetta” synthesizer, made from 40106 CMOS chips….
I just spent four days disconnected from the Internet. It was strange. I also forgot and left my power brick for my laptop at home. So all I had was a Raspberry Pi 400 single board computer. It has a…
I recently spent some time with my digital audio workstation (DAW) putting together a heavily delayed feedback loop on the audio channels. I split the audio and sent it to the input of the effect, then took the output of…
I recently purchased an electronics kit for sending and receiving morse code. It has a port where you can plug in a telegraph key (I bought a red aluminum Iambic paddle), and a headphone jack. It comes as an unassembled…
Back in the day… When I was a kid (back in the 80’s), I used to come home from school and watch a great TV show about future technologies. I don’t remember the name of the show, but it had…
In a previous post, I covered the wiring diagrams, finite state machines, and LED segment encoding for the MAX7219 display module wired up to the Mojo FPGA. In this post, I will cover the Lucid HDL code used to implement…