DAVID HAMP-GONSALVESCARGO BIKE IN CANADAHTML5 CANVAS YULE LOGDOCKER PHUSION BASESMTP TEST/USAGE VIA TELNET A New Value Add for Being the Best. January 2017 Hugo Black & Light
LIFE DASHBOARD
Life Dashboard. February 2019 · 2 minute read. Second hand Kindles are waiting in drawers for someone to repurpose them into something great. Boasting large e-ink screens, wifi connectivity and ARM processors they are an amazing hacking platform. Check out the project repository for more details. In my case I created an information panel ESP BASED SCHEDULING THERMOSTAT I moved into a house that uses a few mini split heatpumps for temperature control and while the technology is efficient and amazing interacting with them is not. PAINLESS RESUMES WITH MARKDOWN Painless Resumes with Markdown. April 2014 · 1 minute read. Latex might be the most fashionable format for the discerning developer but I think its overkill. For my current resume rerwrite I choose markdown because: Its plan text so its easy to edit and version. Its super simple and you are probably already well versed. REVERSE ENGINEERING CAT GENIE 120 DRM TLDR: My robot cat litter box bricks itself after a set number of washes with each soap cartridge so I reverse engineered and suppressed the verfication process to enable refilling.. Problem. I bought a robot cat litter box called the CatGenie 120 and it was great until I realized that the helpful low soap warning was actually DRM which blocks all cleaning actions once its official soap UPC/EAN PRODUCT DATABASES/API'S UPC/EAN Product Databases/API's. November 2012 · 4 minute read. Converting a barcode into useful, descriptive information is harder then you would expect. Or rather its difficult to do with any reliability and accuracy. There are a few good API’s that I’ve been using or looking into that I’ll cover here. The API’s Each service offers
DRAWING REGION POLYGONS ON GOOGLE MAPS API V.3 Positioning and Centering Map. To display the map at a position and scale so that our polygon (s) are visiable we need to create a bounds object that contains our polygon (s). var regionBounds = new google.maps.LatLngBounds(); for(var i=0 ; i < data.length ; i++) { var point = new google.maps.LatLng(data , data ); regionBounds THE MAGIC OF UPC/EAN BARCODES UPC-A: 12 digits, first 6-10 represent the manufacture. UPC-E: 6 digits, used when package size does not permit UPC-A. EAN-13: 13 digits, first 7-11 represent the manufacture (EAN is a superset of UPC-A). EAN-8: 8 digits. EAN-5: 5 digits, never seen one in North America so I don’t support them. EAN-2: 2 digits, never seen one in North America
ANIMATED JAVASCRIPT HEATMAPS.JS I’ve been working on a crime heatmap animation lately and these are some tips for anyone else building something similar.. Heatmap.js. For my animation I used a version of heatmap.js that was tweeked for animation by alastair.is.The tweek slightly changes the look of CARGO BIKE IN CANADA I’ve had a Babboe cargo bike in Toronto for a year now, this is a review of that time.. I’ve ridden the Babboe every day for a year. Its terrific on the ice and works well in deep snow. Its amazingly useful, and gets my daughter to daycare and back each day. DAVID HAMP-GONSALVESCARGO BIKE IN CANADAHTML5 CANVAS YULE LOGDOCKER PHUSION BASESMTP TEST/USAGE VIA TELNET A New Value Add for Being the Best. January 2017 Hugo Black & Light LIFE DASHBOARD
Life Dashboard. February 2019 · 2 minute read. Second hand Kindles are waiting in drawers for someone to repurpose them into something great. Boasting large e-ink screens, wifi connectivity and ARM processors they are an amazing hacking platform. Check out the project repository for more details. In my case I created an information panel ESP BASED SCHEDULING THERMOSTAT I moved into a house that uses a few mini split heatpumps for temperature control and while the technology is efficient and amazing interacting with them is not. PAINLESS RESUMES WITH MARKDOWN Painless Resumes with Markdown. April 2014 · 1 minute read. Latex might be the most fashionable format for the discerning developer but I think its overkill. For my current resume rerwrite I choose markdown because: Its plan text so its easy to edit and version. Its super simple and you are probably already well versed. REVERSE ENGINEERING CAT GENIE 120 DRM TLDR: My robot cat litter box bricks itself after a set number of washes with each soap cartridge so I reverse engineered and suppressed the verfication process to enable refilling.. Problem. I bought a robot cat litter box called the CatGenie 120 and it was great until I realized that the helpful low soap warning was actually DRM which blocks all cleaning actions once its official soap UPC/EAN PRODUCT DATABASES/API'S UPC/EAN Product Databases/API's. November 2012 · 4 minute read. Converting a barcode into useful, descriptive information is harder then you would expect. Or rather its difficult to do with any reliability and accuracy. There are a few good API’s that I’ve been using or looking into that I’ll cover here. The API’s Each service offers
DRAWING REGION POLYGONS ON GOOGLE MAPS API V.3 Positioning and Centering Map. To display the map at a position and scale so that our polygon (s) are visiable we need to create a bounds object that contains our polygon (s). var regionBounds = new google.maps.LatLngBounds(); for(var i=0 ; i < data.length ; i++) { var point = new google.maps.LatLng(data , data ); regionBounds THE MAGIC OF UPC/EAN BARCODES UPC-A: 12 digits, first 6-10 represent the manufacture. UPC-E: 6 digits, used when package size does not permit UPC-A. EAN-13: 13 digits, first 7-11 represent the manufacture (EAN is a superset of UPC-A). EAN-8: 8 digits. EAN-5: 5 digits, never seen one in North America so I don’t support them. EAN-2: 2 digits, never seen one in North America
ANIMATED JAVASCRIPT HEATMAPS.JS I’ve been working on a crime heatmap animation lately and these are some tips for anyone else building something similar.. Heatmap.js. For my animation I used a version of heatmap.js that was tweeked for animation by alastair.is.The tweek slightly changes the look of CARGO BIKE IN CANADA I’ve had a Babboe cargo bike in Toronto for a year now, this is a review of that time.. I’ve ridden the Babboe every day for a year. Its terrific on the ice and works well in deep snow. Its amazingly useful, and gets my daughter to daycare and back each day. PROJECTS
Official plugin for Beets to send music queries to your media player. Beets is a cli music manager and tagger. I wrote a plugin that lets you play the result of a music query in your media player. Since then it has been added to the list of officially supported Beets plugins and is
LIFE DASHBOARD
Life Dashboard. February 2019 · 2 minute read. Second hand Kindles are waiting in drawers for someone to repurpose them into something great. Boasting large e-ink screens, wifi connectivity and ARM processors they are an amazing hacking platform. Check out the project repository for more details. In my case I created an information panel ESP BASED SCHEDULING THERMOSTAT I moved into a house that uses a few mini split heatpumps for temperature control and while the technology is efficient and amazing interacting with them is not. THE MAGIC OF UPC/EAN BARCODES UPC-A: 12 digits, first 6-10 represent the manufacture. UPC-E: 6 digits, used when package size does not permit UPC-A. EAN-13: 13 digits, first 7-11 represent the manufacture (EAN is a superset of UPC-A). EAN-8: 8 digits. EAN-5: 5 digits, never seen one in North America so I don’t support them. EAN-2: 2 digits, never seen one in North America
DOCKER PHUSION BASE
I have been using the phusion baseimage-docker.While in the past i’ve been mostly interested in making my docker images as small as possible with images like alpine-linux(busy-box based) the Phusion base breaks from this tradition by encouraging you to run multiple processes from a single container. CARGO BIKE IN CANADA I’ve had a Babboe cargo bike in Toronto for a year now, this is a review of that time.. I’ve ridden the Babboe every day for a year. Its terrific on the ice and works well in deep snow. Its amazingly useful, and gets my daughter to daycare and back each day. THE LONGTERM COSTS OF PERSONAL PROJECTS Maintaining personal projects incur a small but on going cost: API’s change, PAAS’s deprecate old stacks, frameworks and libraries die / decay and domains need to be renewed. JAVA 8: THE GOOD PARTS Sometimes I feel that Java has become a second class citizen on the JVM. While it commands a huge market share and is generally blazingly fast it hasn’t progressed like Clojure, Scala and even Groovy have. LOADING INDICATOR & CSS ANIMATIONS Wrap up. There are many cases where the lack of browser support will prevent you from using this approch but for me this is a great solution. It creates very little extra load and doesn’t require new image reasources(if you can reuse an image already on the page). NOTEFEEDER
Note Feeder is a small web application that lets you save urls and notes from your current page.. You can access your notes from RSS feeds to find sites or thoughts later. Features. Save links and notes without leaving your page using the bookmarklet. DAVID HAMP-GONSALVESCARGO BIKE IN CANADAHTML5 CANVAS YULE LOGDOCKER PHUSION BASESMTP TEST/USAGE VIA TELNET A New Value Add for Being the Best. January 2017 Hugo Black & Light PROJECTS
Second hand Kindles are a cheap source of large(ish) e-ink displays. This project uses Rust cross compiled the Kindles ARM-7 archetecture to download and present information pertinant to my daily life such as: calendar events, daily spending, surf forecast, etc. LIFE DASHBOARD
Second hand Kindles are waiting in drawers for someone to repurpose them into something great. Boasting large e-ink screens, wifi connectivity and ARM processors they ESP BASED SCHEDULING THERMOSTAT I moved into a house that uses a few mini split heatpumps for temperature control and while the technology is efficient and amazing interacting with them is not. PAINLESS RESUMES WITH MARKDOWN Latex might be the most fashionable format for the discerning developer but I think its overkill. For my current resume rerwrite I choose markdown because: OPENCV/PYTHON COLOR TRACKINGSEE MORE ON DAVIDHAMPGONSALVES.COM UPC/EAN PRODUCT DATABASES/API'S Converting a barcode into useful, descriptive information is harder then you would expect. Or rather its difficult to do with any reliability and accuracy. REVERSE ENGINEERING CAT GENIE 120 DRM TLDR: My robot cat litter box bricks itself after a set number of washes with each soap cartridge so I reverse engineered and suppressed the verfication process to enable refilling.. Problem. I bought a robot cat litter box called the CatGenie 120 and it was great until I realized that the helpful low soap warning was actually DRM which blocks all cleaning actions once its official soap DRAWING REGION POLYGONS ON GOOGLE MAPS API V.3 You can “draw” all sorts of stuff on Google Maps using Layers but mor simply you can also directly create polygons and with a bit of extra work make them looks pretty cool. ANIMATED JAVASCRIPT HEATMAPS.JS I’ve been working on a crime heatmap animation lately and these are some tips for anyone else building something similar.. Heatmap.js. For my animation I used a version of heatmap.js that was tweeked for animation by alastair.is.The tweek slightly changes the look of DAVID HAMP-GONSALVESCARGO BIKE IN CANADAHTML5 CANVAS YULE LOGDOCKER PHUSION BASESMTP TEST/USAGE VIA TELNET A New Value Add for Being the Best. January 2017 Hugo Black & Light PROJECTS
Second hand Kindles are a cheap source of large(ish) e-ink displays. This project uses Rust cross compiled the Kindles ARM-7 archetecture to download and present information pertinant to my daily life such as: calendar events, daily spending, surf forecast, etc. LIFE DASHBOARD
Second hand Kindles are waiting in drawers for someone to repurpose them into something great. Boasting large e-ink screens, wifi connectivity and ARM processors they ESP BASED SCHEDULING THERMOSTAT I moved into a house that uses a few mini split heatpumps for temperature control and while the technology is efficient and amazing interacting with them is not. PAINLESS RESUMES WITH MARKDOWN Latex might be the most fashionable format for the discerning developer but I think its overkill. For my current resume rerwrite I choose markdown because: OPENCV/PYTHON COLOR TRACKINGSEE MORE ON DAVIDHAMPGONSALVES.COM UPC/EAN PRODUCT DATABASES/API'S Converting a barcode into useful, descriptive information is harder then you would expect. Or rather its difficult to do with any reliability and accuracy. REVERSE ENGINEERING CAT GENIE 120 DRM TLDR: My robot cat litter box bricks itself after a set number of washes with each soap cartridge so I reverse engineered and suppressed the verfication process to enable refilling.. Problem. I bought a robot cat litter box called the CatGenie 120 and it was great until I realized that the helpful low soap warning was actually DRM which blocks all cleaning actions once its official soap DRAWING REGION POLYGONS ON GOOGLE MAPS API V.3 You can “draw” all sorts of stuff on Google Maps using Layers but mor simply you can also directly create polygons and with a bit of extra work make them looks pretty cool. ANIMATED JAVASCRIPT HEATMAPS.JS I’ve been working on a crime heatmap animation lately and these are some tips for anyone else building something similar.. Heatmap.js. For my animation I used a version of heatmap.js that was tweeked for animation by alastair.is.The tweek slightly changes the look of PROJECTS
Second hand Kindles are a cheap source of large(ish) e-ink displays. This project uses Rust cross compiled the Kindles ARM-7 archetecture to download and present information pertinant to my daily life such as: calendar events, daily spending, surf forecast, etc. LIFE DASHBOARD
Second hand Kindles are waiting in drawers for someone to repurpose them into something great. Boasting large e-ink screens, wifi connectivity and ARM processors they ESP BASED SCHEDULING THERMOSTAT I moved into a house that uses a few mini split heatpumps for temperature control and while the technology is efficient and amazing interacting with them is not. POSTGRESQL RANGE BASICS In postgres 9.2 a new family of data types were added called Ranges.This is a quick overview of how to use them. Range Types. There are a handful of built in range types that cover the expected number and date types and you can also define your own if you need something outside of that.
TECHNICAL INTERVIEW PREP January 2014 · 2 minute read This is my current list of online resources for preparing for technical interviews. THE MAGIC OF UPC/EAN BARCODES Lately I’ve been working a mobile app called Ethical Barcode that scans product barcodes and determines if the related brand is worth supporting/avoiding. DIY ROLLERS
This build was intended as a proof-of-concept but worked sufficiently well that a second version was not required. The only deficiency I encountered was from poorly triangulating the cap centers(I used a tape measure and hand drilled the holes) which resulted in vibration at high speeds.
THE MUSIC PLAYER/ORGANIZER FOR THE REST OF US Everyone has their own (strong) opinions about this but I think I’ve figured it out. First to organize your music Beets is amazing. Its light, easy to use and lets you tweek things exactly how you want them. The limitation with Beets was that it was just an organizer and you still needed a full GUI application to conveniently find and play your music.
FOXISH - DAVID HAMP-GONSALVES Foxish is a Chrome/Chromium extension that mimics the excellent native handling of RSS and Atom feed reading in Firefox using live bookmarks. It does this by syncing RSS feeds with bookmark folders and refreshing them on a customizable interval. COMPRESSING JSON INTO A BRITTLE LIGHTWEIGHT STRING Client side single page apps tend to throw a lot of JSON data across the internet. These are some techniques I used on cimrheatmap.ca to compress my Geo/Time data by about 90% and avoided the overhead of gzipping the page. Be warned most of this was just for fun and is a silly idea because of the disadvantages listed bellow. DAVID HAMP-GONSALVES * GitHub
* Instagram
* Linkedin
* Projects
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ESP BASED SCHEDULING THERMOSTAT April 2019
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LIFE DASHBOARD
February 2019
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HALLOWEEN MASK 2018
October 2018
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REVERSE ENGINEERING CAT GENIE 120 DRM July 2018
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ARDUINO GROW CLOCK
March 2018
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HARVEST AUTOMATION
November 2017
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GCN TOP 10 CYCLING APPS October 2017
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DIY CYCLING ROLLERS
July 2017
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GIF TWIST
April 2017
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CARGO BIKE IN CANADA January 2017
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A NEW VALUE ADD FOR BEING THE BEST January 2017
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HUGO BLACK & LIGHT
January 2017
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OCTOPRESS TO HUGO
January 2017
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WEBHOOK LIASON
May 2016
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CIRCLECI VS TRAVIS
April 2016
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SHOULD YOU MOVE TO SAN FRANCISCO? January 2016
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HACKTOBERFEST 2015
November 2015
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JAVA 8: THE GOOD PARTS September 2015
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THE VALUE OF FAILED PROJECTS August 2015
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FAILED PROJECTS: OPEN MOSAIC August 2015
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FAILED PROJECTS: TREE RING GENERATION August 2015
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THE LONGTERM COSTS OF PERSONAL PROJECTS July 2015
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FILE TO KNIFE CONVERSION June 2015
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WEBRTC IN 5 MINUTES
May 2015
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TERMINAL GIFS ON OSX April 2015
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ETHICAL APPS ON GREENPEACE PODCAST March 2015
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DOCKER PHUSION BASE
March 2015
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LAUNCHD IN 5 MINUTES February 2015
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OPENCV COMPAREHIST PERFORMANCE January 2015
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MARKOV CHAINS IN CLOJURE January 2015
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IF YOU ARE MOVING TO SAN FRANCISCO December 2014
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THE MUSIC PLAYER/ORGANIZER FOR THE REST OF US May 2014
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PAINLESS RESUMES WITH MARKDOWN April 2014
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POSTGRESQL RANGE BASICS March 2014
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DYNAMIC CSS RESET
March 2014
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SPRITZ LIKE(RSVP) READER BOOKMARKLET March 2014
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TECHNICAL INTERVIEW PREP January 2014
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AWESOME FREE HOSTING STACKS November 2013
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GENERATING IDENTICONS November 2013
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APPS4HALIFAX CRIME HEATMAPS November 2013
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BUILDING A BASIC ANDROID BOT November 2013
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COMPRESSING JSON INTO A BRITTLE LIGHTWEIGHT STRING November 2013
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ANIMATED JAVASCRIPT HEATMAPS.JS October 2013
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DETECTING MOBILE DEVICE FROM JAVASCRIPT October 2013
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LIST OF PROGRAMMING COMPETITIONS/CONTESTS September 2013
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HALIFAX BUS GPS DATA August 2013
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DRAWING REGION POLYGONS ON GOOGLE MAPS API V.3 August 2013
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GENERATING BITCOINS USING ONLINE ADS August 2013
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BUILDING PHONEGAP/CORDOVA APPS FOR IOS July 2013
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ASM.JS IN 30 SECONDS May 2013
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RSS LUDDITE
March 2013
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BUILDING DOLPHIN-EMU ON FEDORA January 2013
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PHONEGAP AND A MILLION FRAMEWORKS January 2013
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JAVASCRIPT DAMERAU LEVENSHTEIN ALGORITHIM November 2012
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DIY PHOTOBOOTH
November 2012
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THE MAGIC OF UPC/EAN BARCODES November 2012
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UPC/EAN PRODUCT DATABASES/API'S November 2012
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INSTALL NODE.JS / NPM ON FEDORA CORE 17 October 2012
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UPDATING CHROME EXTENSION MANIFEST August 2012
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AWESOME IDEAS MARKET HALIFAX June 2012
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ITERATIVE JAVASCRIPT QUICKSELECT June 2012
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CHANGE GNOME SHELL DASH KEY BINDING April 2012
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PYGMENTER
February 2012
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HTML STICKY HEADERS
January 2012
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SLIMMING DOWN JQUERY EASING January 2012
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LOADING INDICATOR & CSS ANIMATIONS November 2011
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WEATHER ICON SET
November 2011
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SMTP TEST/USAGE VIA TELNET November 2011
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CONNECTING TO SVN WITH SCALA/JAVA August 2011
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INJECTING LIVE METADATA WITH WOWZA (1/3) August 2011
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FLASH NETCONNECTION FOR WOWZA RMI (2/3) August 2011
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LIVE METADATA HANDLING USING OSMF (3/3) August 2011
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OPENCV/PYTHON COLOR TRACKING May 2011
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PDF'S USING ITEXT IN 10 LINES May 2011
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HOURLY WEATHER
April 2011
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JQUERY JFEED
January 2011
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HTML5 CANVAS YULE LOG December 2010
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NOTEFEEDER
December 2010
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FOXISH
May 2010
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FOXISH FAQ
May 2010
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PROJECTS
January 0001
