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The Voyage to Smart Home Automation
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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.
Mark Zachmann
Jul 20, 2020
Testing and Reviewing LoRa Antennas
Testing and Reviewing LoRa Antennas
Part 2: Detailed antenna measurements
Mark Zachmann
Jun 17, 2020
Testing & Reviewing LoRa® Antennas
Testing & Reviewing LoRa® Antennas
Part 1: Overview and Summary Information
Mark Zachmann
Jun 13, 2020
Using a Qwiic UV Sensor with Zephyr
Using a Qwiic UV Sensor with Zephyr
The first sensor I connected to my BlueLora was a UV Sensor. It’s nice to know where high levels of UV are for killing Coronavirus, or for…
Mark Zachmann
Jun 4, 2020
BlueLora: Mile-wide Sensor Networks
BlueLora: Mile-wide Sensor Networks
Imagine a wireless network that has a range of miles and which runs on a small battery for months. Now imagine what you could do if each…
Mark Zachmann
May 26, 2020
Building Bluetooth Services in Zephyr
Building Bluetooth Services in Zephyr
Part 2: Implementing the Services
Mark Zachmann
May 10, 2020
Building Bluetooth Services in Zephyr
Building Bluetooth Services in Zephyr
Part 1: Getting Started
Mark Zachmann
May 7, 2020
LittleFs file support for QSPI flash in Zephyr
LittleFs file support for QSPI flash in Zephyr
The board I’m working on has 1MB of QSPI flash. That is serial flash that’s directly controlled by the Nordic nrf52840. See here ->
Mark Zachmann
Apr 16, 2020
How to Develop Portable Applications (iPhone and Android)
How to Develop Portable Applications (iPhone and Android)
This is about Xamarin/C# but let me start describing why.
Mark Zachmann
Mar 23, 2020
Using The Material Design Icons Webfont
Using The Material Design Icons Webfont
I’ve been using the Material Designs Icons webfont and can not find a summary of character code vs icon. So, I wrote a simple Net.js…
Mark Zachmann
Feb 5, 2020
Reading Analog Data in Zephyr with a nrf52840
Reading Analog Data in Zephyr with a nrf52840
It turned out to be much harder to read the ADC in Zephyr than I expected. As usual the documentation is slim and the syntax was a little…
Mark Zachmann
Oct 28, 2019
Using a PWM Device in Zephyr
Using a PWM Device in Zephyr
Using devices in Zephyr is tricky because there are so many options and settings at first that it’s just not clear from documentation and…
Mark Zachmann
Oct 24, 2019
Run Zephyr on nrf52840 (Particle Xenon)
Run Zephyr on nrf52840 (Particle Xenon)
I’ve been experimenting with Nordic Semiconductor nrf52840 boards, first using Arduino, then naked NordicSemi SDK/C++ and now I’m looking…
Mark Zachmann
Oct 17, 2019
Surface Mount on the Cheap
Surface Mount on the Cheap
Since I’ve been automating my surface mount board creation a summary of where things stand seemed interesting.
Mark Zachmann
Apr 26, 2019
Cutting Vinyl with my CNC — Pick and Place machine
Cutting Vinyl with my CNC — Pick and Place machine
I’ve been prototyping product stickers and need an intricate shape with cutouts — and I have a CNC. Since my Pick and Place machine is…
Mark Zachmann
Apr 11, 2019
A Pick and Place Machine for < $1000?
A Pick and Place Machine for < $1000?
I’m thinking about doing a Kickstarter for a dirt-cheap Pick and Place machine. I’ve been working on this for a few years and finally the…
Mark Zachmann
Mar 13, 2019
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