12 October 2017
Sometimes, you need to install an older version of an iOS app you’ve developed so that you can test that migration is handled properly when a user updates your app. Apple makes this an easy two-step process in Xcode 9.
22 August 2017
Yesterday’s total solar eclipse was spectacular, especially along the line of maximum totality near Clemson, South Carolina, where we watched it. I used my Arduino temperature and light logger to record the progression of the eclipse.
20 August 2017
During tomorrow’s eclipse, air temperature is supposed to drop, so what’s a scientist supposed to do? Get some data, of course! I’ll modify my Arduino temperature logger so that I can log the light level and the temperature simultaneously.
31 July 2017
I recently took the FAA’s Unmanned Aircraft General exam so that I could get my Remote Pilot Certificate. The FAA gives good guidance on what to study for the exam, but it’s a large chunk of material. The material is not difficult, but it helps to approach it with a plan, and that’s what I’ll describe.
17 June 2017
About nine years ago, I formed Hunt Mountain Software and started to become a software developer, not just a programmer. One of the surprises of doing this is that it has helped me to better understand the graduate students that I advise in my day job as a professor of geology, and what they face.
14 May 2017
I’ve birded for many years, and one of my goals this summer is to learn to bird by ear. After starting the Cornell Lab of Ornithology course on How to Identify Bird Songs, I’ve become sold on sonograms, pictorial representations of bird songs that show the frequency of the song through time. They’re easy to make with a cell phone and R, and that’s what I’ll show here.
11 May 2017
This week, I presented a talk at CocoaHeads Atlanta on Swift and the Internet of Things. It’s based on my explorations of Swift and Raspberry Pi this past month.
5 May 2017
The Swift Package Manager offers an easy way to add packages to your Raspberry Pi Swift projects. In this post, I’ll use it to flash an LED.
28 April 2017
I’ve used Swift to blink an LED on the Raspberry Pi, now it is time to do something new with the Pi’s GPIO pins. Today, I take the temperature.
21 April 2017
In my latest explorations of the Raspberry Pi, my goal is to use its GPIO pins as a sensor and report the results on a web page, combining the capabilities of the Pi’s. In this post, I set up my Pi to run headless, that is, without a monitor, keyboard, and mouse. To do that, I’ll need to access it through secure shell.
16 April 2017
Since being open-sourced by Apple, Swift has been ported to a a variety of platforms, which is good news not only for code reuse and writing in a consistent language, but also because Swift has many good features. I like writing in Swift, in part because it forces me to think critically about what each method returns.
16 January 2017
Years ago, many scientists I knew used three Mac apps to plot their data, CricketGraph, KaleidaGraph, and DeltaGraph. Although some of these are still available, some after checkered histories of availability, most scientists I know have moved on to other options, especially R. These apps had proprietary binary data formats for storing the data, the scientist’s data. You were locked in...
24 July 2016
While building a new Arduino project on OS X El Capitan (10.11), I wasn’t able to connect using a serial port. Getting the serial port as an option was possible with some temporary changes to Apple’s System Integrity Protection.
24 April 2016
I have one observation about Dave that I'd to share with you. We don't become rich by doing paleontology; we do it because it fascinates us. Because of that, …