Category Archives: Tutorials

Build a Waving Robot using Watson Services

So, building on the previous tutorial on identifying peaks in a sound file, I have integrated into my TJBot robot. Essentially the robot plays a song and waves its arm (driven by a servo motor) in tandem with the peaks … Continue reading

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Detect beats, extract amplitude data from an audio file, using Nodejs

Fork on Github The Problem: Code my TJBot robot such that it listens to and enjoys good music. For a robot to actually enjoy music, it needs to .. well .. become aware of the beats (usually peaks) in said … Continue reading

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D3.js version 4.x – Examples and Changes from version 3.x

Recently, I’m spending some time to learn more about data visualization and have decided to learn d3.js, starting from the basics. I’m working through Scott Murray‘s book and a few other tutorials created by Mike Bostock (creator of d3 … … Continue reading

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Windows 10 – We couldn’t complete the updates, undoing changes

Similar to windows 8.1 update issues, it appears the new Windows 10 does occasionally have the same problem. With such problems, your PC may restart repeatedly showing the message below. We couldn’t complete the updates, undoing changes. Here are some steps to … Continue reading

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Socket Programming : How to Integrate Socket.io java Client in your Android App without Maven

I needed to implement Websockets between my android app and a web application to efficiently stream real-time text data (values that change over 10 times per second .. or more). Normally, most applications connect to a server using http calls … Continue reading

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How to Test Apps Using the Samsung Remote Testing Lab

To facilitate testing of apps, Samsung has developed the Remote Testing Lab (RTL) facility in several regions (Poland, UK, US, INDIA, RUSSIA) . These labs contain real devices which allows developers upload and test their apps to ascertain behavior across … Continue reading

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Gear 2 Developer Tips : Keep Screen On, Seller Office Issues

A few tips to solve issues encountered whilst developing gear 2 apps and submitting them to the app store. Some of them are due to the new changes to the samsung app seller office.

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Gear 2 – How to Bring your App to ForeGround and Autolaunch.

Many times you may be working on an app that needs to show some notifications to users as activities occur – even when a different app is on the foreground. E.g an app that reminds you to take your meds … Continue reading

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Gear 2 – How to Send Infra-red IR (String) Data using the irBlaster Sensor

The irblaster included in the Gear 2 is definitely an innovative component especially for hobbyists and developers. Several Arduino projects have excitedly explored projects that let them build custom remote controllers for electronic devices that have infra red receivers such … Continue reading

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Getting Accelerometer Data in Javascript for your Gear 2 Apps [Sample Code]

One more important way to overcome user-interaction challenges on wearable devices is to implement hands-free interaction via sensors. Today, we’ll be looking at code to obtain tilt information from the Gear 2 accelerometer sensor. Luckily, it is a straightforward and easy … Continue reading

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