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The Voyage to Smart Home Automation
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Should you add stuffing in a Subwoofer
Should you add stuffing in a Subwoofer
I just built a pair of woofer enclosures and when they were finished the question was whether or not to add some wall treatment or…
Mark Zachmann
May 15
A Cheap Electronically Controllable DC Supply
A Cheap Electronically Controllable DC Supply
This story describes how to convert a manually set DC supply to one you can set remotely or by computer.
Mark Zachmann
Mar 10
How to run CamillaDSP with Multiple DACs
How to run CamillaDSP with Multiple DACs
I use two 4-channel DACs working together with CamillaDSP to provide 6 active speaker channels. Here’s what I do to get it working in…
Mark Zachmann
Jan 26
Add a Silent Fan to your Raspberry Pi 4
Add a Silent Fan to your Raspberry Pi 4
I’ve been trying to move from a Mac Mini to a Raspberry Pi for my living room audio for a year and finally was able to get a Pi 4B retail…
Mark Zachmann
Aug 27, 2023
Comparing the Dayton Audio DSP408 and Minidsp 2x4
Comparing the Dayton Audio DSP408 and Minidsp 2x4
The DSP408 and Minidsp 2x4 are compact A/D-CPU-D/A units designed to be active crossover appliances with room correction. These are both…
Mark Zachmann
Jun 16, 2023
Using CamillaDsp with a Motu-M4 as a Crossover
Using CamillaDsp with a Motu-M4 as a Crossover
Traditionally, loudspeakers have internal passive crossovers to funnel highs to tweeters and lows to woofers. This article is about using a…
Mark Zachmann
May 10, 2023
The Arylic Audio Pro 50+
The Arylic Audio Pro 50+
The Arylic Up2stream S50 Pro+ is a high-def high-feature version of a Chromecast Audio (discontinued a few years ago). Since we now spend…
Mark Zachmann
Mar 14, 2023
Make a USB Charger and Current Tester
Make a USB Charger and Current Tester
You can make any project portable with this LiPo battery charger and USB test circuit. The USB circuit provides a passthrough of the USB…
Mark Zachmann
Jan 21, 2023
Make a serial bootloader for the STM32WL (Lora-E5) using Zephyr and MCUBoot
Make a serial bootloader for the STM32WL (Lora-E5) using Zephyr and MCUBoot
Updated June 2024
Mark Zachmann
Jan 4, 2023
Add a LiPo Battery Charger to the Wio-E5 Mini
Add a LiPo Battery Charger to the Wio-E5 Mini
The Wio-E5 Mini from Seeed Studio is a compact usb/battery-driven LoRa-E5 board but there’s no battery charging option so here’s how to add…
Mark Zachmann
Nov 2, 2022
A LoRa PingPong for the STM32WLE5 (LoRa-E5 Part 4)
A LoRa PingPong for the STM32WLE5 (LoRa-E5 Part 4)
After setting up the development environment it’s time to write and test a simple LoRa PingPong application — something that sends and…
Mark Zachmann
Oct 18, 2022
VSCode Building and Debugging Zephyr on the Lora-E5 (Part 3)
VSCode Building and Debugging Zephyr on the Lora-E5 (Part 3)
Building and debugging the code you create with Visual Studio Code is not a hard task, thanks to existing extensions, but it does take some…
Mark Zachmann
Oct 17, 2022
Lora-E5 Software Development with Zephyr and VSCode (Part 2)
Lora-E5 Software Development with Zephyr and VSCode (Part 2)
Here is how to create a simple STM-raw development environment that lets you build/run the provided Seed Studio LoRaWan examples as well as…
Mark Zachmann
Oct 16, 2022
The Seeed Studio LoRa-E5 Hardware
The Seeed Studio LoRa-E5 Hardware
The STM32WLE5 CPU+LoRa radio chip is the basis for Seeed Studio’s LoRa-E5 module. They’re both very interesting so I’m going to walk…
Mark Zachmann
Oct 16, 2022
How to use a Spindle Camera and SpindleView
How to use a Spindle Camera and SpindleView
CNC Spindle Cameras Part IV
Mark Zachmann
Apr 5, 2022
SpindleView CNC Camera Software
SpindleView CNC Camera Software
Spindle Cameras Part III
Mark Zachmann
Apr 1, 2022
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