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Paul Gallagher
Lives in Singapore
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Paul Gallagher

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LittleArduinoProjects now with fancy catalog!
I keep finding new uses for GitHub Pages - situations where in the past I would otherwise have spun up a web site on heroku or similar. But if the site can be static, and especially if you are already hosting the git repository at GitHub, Pages are perfect....
I keep finding new uses for GitHub Pages - situations where in the past I would otherwise have spun up a web site on heroku or similar. But if the site can be static, and especially if you are already hosting the git reposito...
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Paul Gallagher

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LittleArduinoProjects#204 Type K Temperature Logger
I'm working on an idea where I need to measure temperatures to around 500°C - above those typically supported with semiconductor sensors or thermistors. This project demonstrates the basic approach using an Arduino as the "temperature logger". I'm using a K...
I'm working on an idea where I need to measure temperatures to around 500°C - above those typically supported with semiconductor sensors or thermistors. This project demonstrates the basic approach using an Arduino as the "te...
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LittleArduinoProjects#203 Homopolar Motor
What happens when electric fields cut across magnetic fields? A force is generated, and the homopolor motor is the classic demonstration. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub .
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LittleCodingKata: Hardware Excuse Generator with gRPC
gRPC is a very interesting lightweight middleware framework for language-neutral, cross-platform RPC. When I heard about Natalie Silvanovich's Hardware Excuse Generator on Embedded.fm , I immediately recognised a better "Hello World" for testing out gRPC. I...
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LittleArduinoProjects#201 Yet Another Doorbell
aka door-fart according to my better half ... 555 Timer-based oscillators are not exactly the most musical creatures. #201 is a kit build. Ridiculously cheap on aliexpress , it even came with extra components, so a bit of a bargain impulse-buy. The kit turn...
aka door-fart according to my better half ... 555 Timer-based oscillators are not exactly the most musical creatures. #201 is a kit build. Ridiculously cheap on aliexpress, it even came with extra components, so a bit of a ba...
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LittleArduinoProjects#199 CD4026 Bucket-brigade LED driver
This is an extension if the ideas in #196 , demonstrating how it's possible to build a "bucket-brigade" of CD4026 chips to drive an arbitrary number of 7-segment LEDs with a single data line. It just requires the carry-out from the first CD4026 to be chaine...
This is an extension if the ideas in #196, demonstrating how it's possible to build a "bucket-brigade" of CD4026 chips to drive an arbitrary number of 7-segment LEDs with a single data line. It just requires the carry-out fro...
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Have him in circles
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Paul Gallagher

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On "random" CI failures
I closed a bug yesterday that's been kicking around for almost a year as a sometimes fails on CI but no-one can figure out why frustration. Sooner or later you'll hear someone suspect it must be a problem with CI. Which is ironically funny in a shoot-the-me...
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阿部真央 Don't let me down
One of the best finds in the racks at Tower Records Fukuoka福岡市. It's been years since I last got to browse a record store in Japan; I'm glad they still exist, with stacks of CD players queued up to sample. And a huge relief to see the indie rock scene is ju...
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LittleArduinoProjects#202 LM3915 Audio Level Kit
The LM3915 is a useful IC for simple audio level displays. This is a cheap kit build which largely follows the reference circuits in the datasheet. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub .
The LM3915 is a useful IC for simple audio level displays. This is a cheap kit build which largely follows the reference circuits in the datasheet. As always, all notes, schematics and code are in the Little Electronics & Ard...
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Embedded: Specialization is for insects
embedded.fm has fast become my favourite podcast of the moment (always excepting QOTD ). Great ideas shared in an inclusive and warm-fuzzy way. Elecia's end-of-show quote always makes it worth listening right to the end. Until I heard #146's , I'd struggled...
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LittleArduinoProjects#200 Mini Solenoid Engine
Solenoid engines? They definitely fall into the the category of because you can . Some people take it to a whole other level ( like this V8 model ). What I have here is much more modest - a single-cylinder engine powering an impromptu-wire-art drive train. ...
Solenoid engines? They definitely fall into the the category of because you can. Some people take it to a whole other level (like this V8 model). What I have here is much more modest - a single-cylinder engine powering an imp...
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LittleArduinoProjects#198 Hall Effect Switch
Hall-effect sensors generally support one of three modes: switch - turn on in the presence of a magnetic field of a specified polarity latch - turn on in the presence of a magnetic field, and stay on until exposed to the reverse polarity linear sensor - out...
Hall-effect sensors generally support one of three modes: switch - turn on in the presence of a magnetic field of a specified polarity latch - turn on in the presence of a magnetic field, and stay on until exposed to the reve...
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The Voice UK • Episode 4 Complete • Blind Auditions • April 14, 2012
www.youtube.com

This is the last of the blind auditions. Next week the battle rounds begin. For more about Tom Jones and to participate in a fan community,

GovCampSG [licensed for non-commercial use only] / Active Citizenry One ...
govcampsg.pbworks.com

Active Citizenry One App at a time. Page history last edited by GovCampSG 1 week, 2 days ago. Abstract: Everyone's going to be engaging

GovCampSG [licensed for non-commercial use only] / Wish List for Open Data
govcampsg.pbworks.com

Wish List for Open Data. Page history last edited by GovCampSG 1 day, 15 hours ago. Abstract: Even though the data is available, it is how y

GovCampSG [licensed for non-commercial use only] / Is Open Data enough
govcampsg.pbworks.com

Is Open Data enough. Page history last edited by GovCampSG 1 week ago. Abstract: data.gov.sg has a whole slew of raw data available for cons