Author Archives: Glen

Converting More Vintage Grass Valley Hardware to USB

In this project, I convert two panels from a vintage Grass Valley video switcher into general-purpose USB input and output devices without modifying the original panels. This project required both reverse engineering the hardware and deciphering the software protocols used … Continue reading

Posted in Uncategorized | Comments Off on Converting More Vintage Grass Valley Hardware to USB

Converting a Vintage Grass Valley Button Panel to USB Using the Silicon Labs EFM8UB1

In this project, I convert a set of illuminated push buttons from a vintage Grass Valley video mixer into a custom vendor-defined USB HID peripheral. Like the USB analog panel meters project, this project uses a Silicon Labs EFM8UB1 microcontroller … Continue reading

Posted in Uncategorized | Comments Off on Converting a Vintage Grass Valley Button Panel to USB Using the Silicon Labs EFM8UB1

Building a Set of USB-Controlled Analog Panel Meters Using the Silicon Labs EFM8UB1

I’ve always liked the way these little HUA SO-45 analog panel meters looked, but, given the long lead times from China, I’ve never ordered a set. This fall, I changed my mind and finally decided to order a set. While … Continue reading

Posted in Uncategorized | Comments Off on Building a Set of USB-Controlled Analog Panel Meters Using the Silicon Labs EFM8UB1

The Single USB RGB LED

This project is a single RGB LED that is controlled over USB using a command line interface from a serial terminal window. A PIC16F1459 microcontroller implements the USB communications device class (CDC), processes the commands received from the user, and controls a single APA106-F8 8mm round RGB LED. Continue reading

Posted in Uncategorized, USB | Comments Off on The Single USB RGB LED

Mopidy Music Server Remote Control

After wiring the house for a Dante digital audio network and building the Spotify and Pandora Wireless Remote Track / Artist / Album Display project, I decided the next thing needed to fix up my music listening experience was a … Continue reading

Posted in Uncategorized | Comments Off on Mopidy Music Server Remote Control

Spotify and Pandora Wireless Remote Track / Artist / Album Display

I use Pandora and Spotify a lot–typically from 7 in the morning until 11 at night. I got frustrated with the Spotify and Pandora apps on my Pixel 2 and their inability to find and control my Chromecast Audio players … Continue reading

Posted in Uncategorized | Comments Off on Spotify and Pandora Wireless Remote Track / Artist / Album Display

An Isolated RS-422 / RS-485 Shield for the Automation Direct P1AM-100 Open-Source PLC

The RS-422 / RS-485 shield is an open source shield designed to add RS-422 and RS-485 communication capabilities to the ProductivityOpen family of open-source programmable logic controllers (PLC’s) from Automation Direct. It’s loosely based on the Arduino MKR RS-485 shield … Continue reading

Posted in Uncategorized | Comments Off on An Isolated RS-422 / RS-485 Shield for the Automation Direct P1AM-100 Open-Source PLC

Building an Add-On Module for the Automation Direct P1AM-100 Open-Source PLC

In January 2020, Automation Direct launched their ProductivityOpen family of open-source programmable logic controllers (PLC’s). The first controller in the series, the P1AM-100, is based on the Microchip ATSAMD21 microcontroller and programmed using the Arduino development environment. To encourage development, … Continue reading

Posted in Uncategorized | Comments Off on Building an Add-On Module for the Automation Direct P1AM-100 Open-Source PLC

Fort Collins Connexion FTTH Construction – Part Four

Welcome to part four of  my blog post on the construction and installation of the Fort Collins Connexion municipal broadband fiber network. In part three, we looked at the installation of service at my friend Collin’s house. In part four, … Continue reading

Posted in Uncategorized | Comments Off on Fort Collins Connexion FTTH Construction – Part Four

Build a DMX FeatherWing to Control Lights with a Feather M0

This project uses an Adafruit Feather M0 board to control a group of RGB lights using the DMX-512 protocol. We’ll build a DMX-512 FeatherWing and connect it to the Feather M0 and a Particle Ethernet FeatherWing. Finally, we’ll develop a web-based GUI to select different RGB lighting effects and control the lights. Continue reading

Posted in DMX / Art-Net, Ethernet, Lighting, Microchip, Power over Ethernet (PoE), SAMD21 | Comments Off on Build a DMX FeatherWing to Control Lights with a Feather M0