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Ripples in the Ether

Emanations from Amateur Radio Station NT7S

Category: Coding

Si5351 Programming Flowchart

I recently received this nice flowchart in email from Joe Marin, CO7RR which documents a method for programming the Si5351. It looks slightly different from the way I do it in the Si5351 Arduino library and I haven’t personally tried it, so I can’t vouch for its accuracy, but I wanted to pass it along in… Read More Si5351 Programming Flowchart

12 February 2018 Jason Milldrum1 Comment

Arduino C++ Investigations – Introduction

As mentioned in the last Wideband Transmission, I recently viewed a presentation from CppCon 2016 which convinced me that a lot of my preconceived notions about the (lack of) suitability of C++ for use in microcontroller applications might be misplaced. The standard lore (go ask Wes Hayward W7ZOI his opinion of lore) states that C++… Read More Arduino C++ Investigations – Introduction

15 June 201717 June 2017 Jason MilldrumLeave a comment

Break My New Library

I know that the updates here have been extremely sparse. For that I do apologize. Things are slowly starting to settle into a new normal around here, and I’ve been able to regain the ability to put time back into work. There’s a large to do list on my whiteboard, and many of the things… Read More Break My New Library

20 November 201620 November 2016 Jason Milldrum18 Comments

Wideband Transmission #9

Arduino in the Cloud I saw a recent post on the Make blog about the new cloud ecosystem for Arduino which has been dubbed Arduino Create. Since this will most likely be the future of Arduino, it seemed wise to get an early look at the platform. It includes quite a few features, but the… Read More Wideband Transmission #9

21 June 201621 June 2016 Jason Milldrum2 Comments

Wideband Transmission #8

Another 10 mW WSPR Beacon I enjoy writing up my projects, but it’s much better to get feedback to see that someone was actually able to take my writing and successfully duplicate my project. Via the Etherkit Twitter account, I received this from Tom Hall, AK2B regarding my last posted project: @etherkit 10mw WSPR station… Read More Wideband Transmission #8

25 April 201626 April 2016 Jason Milldrum2 Comments

More Strange Attractors

As I mentioned toward the end of my post on the Python/GTK+ implementation of the Lorenz attractor, I ultimately wanted to add some of the other strange attractors to my program in order to make it a bit more interesting. So I did just that. It also gave me a good excuse to learn a… Read More More Strange Attractors

11 March 2016 Jason MilldrumLeave a comment

Lorenz Attractor in Python

Back in the day, when I was a budding nerd in the late 80s/early 90s, I spent a lot of my free time down at the local public library looking for any books I could find regarding certain topics which captured my interest: programming, astronomy, electronics, radio, mathematics (especially the recreational mathematics books), and other… Read More Lorenz Attractor in Python

9 March 201610 March 2016 Jason Milldrum5 Comments

Si5351A Breakout Board Documentation

I appreciate all of the interest in the Si5351A Breakout Board that I have available on OSHPark. I apologize for not having this available sooner, but here is a GitHub repository which hosts the KiCad design files and a PDF of the Breakout Board schematic, which lists the part numbers for the reference oscillator and… Read More Si5351A Breakout Board Documentation

7 July 2014 Jason Milldrum15 Comments

Si5351 Libraries and Breakout Board

A few exciting developments here on the Si5351 front. First off, I took the C code from my Si5351 library for avr-gcc and converted it to an Arduino/C++ library, which you can find here. It replicates the functionality in the avr-gcc library, but makes it quite a bit easier to rapidly implement designs. I’ve tested… Read More Si5351 Libraries and Breakout Board

14 June 2014 Jason Milldrum27 Comments

Si5351A Investigations Part 6

The theme of this blog post is not lots of tedious work, but refinement leading to good results. First off, let’s talk about the funny I2C address on the parts which I received from Mouser. Since Digi-Key has no order minimums and very inexpensive shipping available (in the form of USPS First Class mail), I… Read More Si5351A Investigations Part 6

3 June 20142 November 2014 Jason Milldrum4 Comments

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About This Blog/Bio

You've arrived at the blog of Jason Milldrum, NT7S. It's mostly related to amateur radio (especially homebrewing and QRP) but occasionally other topics will pop up when they strike me as amusing. The QTH is in Oregon wine country. Husband of Jennifer, dad of Noah and Eli. Butler to a pair of cats and a rescue Beagle.

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