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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…
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Mark Zachmann
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…
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Mark Zachmann
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…
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Mark Zachmann
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

Once my latest Zephyr project was in a box it became critical to have an update process that didn’t require connection to the debug port…
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Mark Zachmann
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…
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Mark Zachmann
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…
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Mark Zachmann
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…
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Mark Zachmann
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…
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Mark Zachmann
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…
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Mark Zachmann
How to use a Spindle Camera and SpindleView

How to use a Spindle Camera and SpindleView

CNC Spindle Cameras Part IV
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Mark Zachmann
SpindleView CNC Camera Software

SpindleView CNC Camera Software

Spindle Cameras Part III
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Mark Zachmann
Why use a Spindle Camera?

Why use a Spindle Camera?

CNC Spindle Cameras Part II
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Mark Zachmann
A Tiny Sealed Raspberry Pi Webcam

A Tiny Sealed Raspberry Pi Webcam

CNC Spindle Cameras Part I
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Mark Zachmann
What is the range of a LoRa Radio?

What is the range of a LoRa Radio?

When I started using LoRa radios it amazed me that there was no discussion of real life range. This article helps solve that.
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Mark Zachmann
Testing and Reviewing LoRa Antennas

Testing and Reviewing LoRa Antennas

Part 2: Detailed antenna measurements
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Mark Zachmann
Testing & Reviewing LoRa® Antennas

Testing & Reviewing LoRa® Antennas

Part 1: Overview and Summary Information
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Mark Zachmann
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