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Morse Code is not dead (yet)

Posted on 2013-04-09 By rolfje 1 Comment on Morse Code is not dead (yet)

International_amateur_radio_symbolNot everybody understands why I am trying to learn morse code on lcwo.net. Maybe I’m not even sure myself. But most people seem to think morse code is absolutely dead. I could tell you that’s not the case, but it is far better to find out for yourself. To be able to do that you need access to a radio which can receive CW (continuous wave) signals somewhere between 8MHz and 15MHz. This is the place where HAM Radio Operators hang out and try to talk to eachother. Morse code is still used there, mainly for DX-ing.

So how do you do that? With the power of the internet and a few very enthusiastic people in Dwingeloo, you can now receive radio signals right on your computer using radios all over the world. Lots of links in this article, have fun!

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Uncategorized

Open letter to Keith Lang about Skitch

Posted on 2013-01-03 By rolfje No Comments on Open letter to Keith Lang about Skitch

Skitch 1.0.2Dear Keith,

I read your letter about Skitch and would like to respond to all that has happened from my end-user perspective.

I am a long-time Evernote user and fan. Evernote changed note taking by being truly searchable. I can confidently drop all the websites, receipts, todos and ideas in there, and clear my mind of the “I must remember that” burden. The OCR of Evernote works beautifully on photos of whiteboards, making even my whiteboard notes searchable.

In 2010, I discovered Skitch. The simplicity and razor sharp focus on anotating a screencapture and share the anotated image by dragging it anywhere was sheer brilliance. My daily work includes making annotated screenhots and mailing them to team members to discuss improvements. Skitch changed this ugly capture-save-edit-save-attach-send cycle to pure poetry in motion. Dragging images into Evernote even made my screenshots searchable. It instantly became second nature and my go-to image tool.

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Apple

Why you should not use SOAP Headers

Posted on 2012-12-24 By rolfje 3 Comments on Why you should not use SOAP Headers

container

In the project I am working on right now we use apache XCF and Spring to provide a SOAP service to our customers. As part of the messages, there is a userid/password combo telling the application which user sent the request. I struggled with that today because I think that userid/password info should actually be in the SOAP Header, cleaning up my API, enable me to implement different authentication techniques in the future and generally be more “compliant” to the SOAP standard. Boy was I wrong.

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Software

Make your buildserver talk

Posted on 2012-12-16 By rolfje No Comments on Make your buildserver talk

Jenkins talkingHave you ever started a shell script which takes a while and you keep monitoring that window because you really need those results? If you are working on a Mac, you can use the Mac’s power of speech to tell you a command is finished. Here’s how:

./yourreallyslowbuild.sh; say "really long build is finished"

With a little curl and shell scripting magic, I told my Mac to constantly monitor our Jenkins buildserver, and bug everybody in the office when the hourly build is failing:

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Apple, Fun, Software

The world is not a Green Field

Posted on 2012-12-02 By rolfje 2 Comments on The world is not a Green Field

The real world

Devoxx 2012 was nice. 3400 nerds invading Antwerp to talk about new frameworks, languages, and geek out over a set of RaspberryPi‘s. But it also confirmed a new “pet peeve” this grumpy old architect is developing.

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Uncategorized

Steve Jobs’ yacht launched, named “Venus”

Posted on 2012-10-28 By rolfje 3 Comments on Steve Jobs’ yacht launched, named “Venus”

http://www.youtube.com/watch?v=DZh4aSszD5k

Today Steve Job’s yacht was launched from a dock a few miles from my house. I went there with some friends and we shot some awesome footage of this incredible ship. Through the glass, we could see the 7 iMacs which are used to control the ship. There are also large doors on the side and the back, I suspect these will be used to launch boats or jetskis into a nice warm Mediterranean water.

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Apple

Shoot salt at flies

Posted on 2012-08-07 By rolfje 1 Comment on Shoot salt at flies

BUG-A-SALT Lorenzo had a great idea. In stead if being one of those “having fun at the bar” ideas that never actually see the light of day, Lorenzo followed through. Did you ever have that urge to just take a gun and shoot that fly that is constantly buzzing around your head or food? Well now you can. Check out his invention at www.bugasalt.com.

Seeing his gun, I remembered making pea-shooters at high school from a roll of tape and a party balloon. I adjusted the idea for flies (smaller nozzle), and it works beautifully. It only holds one shot, and it looks not nearly as cool as the shotgun idea of Lorenzo, but if you can’t wait to start shooting those flies, here’s how to make your own low-budget, one-shot salt shooter. Enjoy!

[youtube=http://www.youtube.com/watch?v=gjI9rTNCRqs]

Fun, Hardware

Toyota (Corolla Verso) iPhone Bluetooth connection

Posted on 2012-08-04 By rolfje 24 Comments on Toyota (Corolla Verso) iPhone Bluetooth connection

Connect your iPhone to your Toyota's Bluetooth systemMy sisters in law bought a beautiful 2006 Toyota Corolla Verso. They could not get the iPhone to pair with the car’s Bluetooth system. The dealer told them that this was an iPhone problem, but after some fiddling, it turns out there is a simple workaround. If you want to pair an iPhone to your car, and the car says “pairing failed” as soon as you tap on your iPhone, this simple trick might help for you. This article contains detailed steps for the Toyota Corolla Verso, but on other cars this might work too.

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Apple, Hardware

Why developers are never on time

Posted on 2012-06-28 By rolfje No Comments on Why developers are never on time

If you have worked in IT as long as I do, you probably have noticed that developers have a tendency to not be on time. They are late for meetings, late for lunch, and on other days they are in at 6am or (and) they work until 3am the next morning. If you ever wondered why this is, I might have some answers for you.

You might also find this post interesting if you are trying to figure out why you can’t get your time zones working in MySQL.

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Software

How to make customers blog about you

Posted on 2012-05-02 By rolfje 2 Comments on How to make customers blog about you

An informative article for webshop owners this time, all about how to make people blog about your company. Everything you need to know about online customers, the power of the internet, and how good old moral values still work and can be leveraged to your advantage. Or not.

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Apple, Hardware

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