The Curmudgeoclast

Thoughts, projects, and ramblings of Dave Astels

Sat 20 April 2019

What I've Been Up To For the Last Year

Posted by dastels in general   

I just made a post and noticed that it's been a year since my last one. This always seems to happen. Good intentions "I'll blog more... really!". Then life happens, I get distracted, and suddenly I see that it's been a year since I last posted. So here we go …

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Sat 30 March 2019

Review: TWSBI Diamond 580ALR Nickel Gray

Posted by dastels in pens   

How I Learned to Relax and Love the Demonstrator

I'm not really a fan of demonstrator pens. Seeing the guts is interesting sure, but if you've seen one convertor you've pretty much seen them all. I have a Monteverde Monza so I'm good with demonstrators.

Or so I thought.

With …

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Sun 15 October 2017

Feather M0 Express supersizing

Posted by dastels in project   

NOTE: This is based on the 2.x branch of circuitpython and doesn't yet work on the lastest from the master branch.

In my last post I described how I hacked a 2Mbyte SPI flash onto a Trinket M0 to give it the memory space for CircutiPython of one of …

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Sun 02 April 2017

SmartHome: Node Hardware

Posted by dastels in project   

Nodes are the metaphorical eyes, ears, and hands of the smarthome system. There will be many of them in a home. Even in my modest apartment I will probably have about a dozen. So they need to be unobtrusive, reliable, and fairly inexpensive.

I went through several progressively more refined …

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Sat 25 March 2017

Smarthome: Introduction

Posted by dastels in project   

Almost a year ago a friend and I started playing with the idea of building a smart home control system. Before getting too far I ended up back in Canada and the friendship dissolved, as they do. I, however, continued evolving my ideas and I now have what I think …

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Wed 14 December 2016

Typechecking in GoLisp

Posted by dastels in tutorial   

GoLisp now provides basic, and optional, type checking for the arguments and return values of user defined functions. Additionally, primtive functions also have type checking on arguments, as appropriate. For example:

[code lang=text] > (+ 'a 3) Error in evaluation: Evaling (+ 'a 3). Wrong argument type for argument 0; expected Integer …

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Tue 06 September 2016

My first Arduino shield

Posted by dastels in project   

Arduino Uno is a nice, simple platform to hack on but has limited IO. The Arduino Mega2560 has a ton of IO but is bigger and more expensive. However, you're not stuck with an Arduino as it comes off the shelf. One really nice thing about the Arduino platform in …

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