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Author Archives: Vykthur
Playing Audio over Bluetooth on Rasbperry Pi (Using Bluealsa, Command Line)
In many situations (connecting remotely to the pi, programmatically playing audio), it is necessary to have command line interface (CLI) options that enable you setup and play audio via bluetooth. This post covers the process of connecting to a bluetooth … Continue reading
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
Posted in Research, Tutorials
Tagged speech to text, text to speech, tjbot, watson services
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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
Posted in Programming, Research, Tutorials, Uncategorized
Tagged audio decoding html5, beat extraction, javascript, web audio api
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Why I’m excited about the upcoming Watson Developer Conference!
I’ll be attending Watson Developer Conference 2016 Yay!! Developer conferences have always been an interesting experience for me! Having attended (and given short talks) at conferences such as Samsung Tizen DevCon, Blackberry Devcon, Google developer conferences etc, the most exciting … Continue reading
Posted in Developer Tips, General Thoughts, Uncategorized
Tagged IBM, Watson, Watson developer conferece
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My Experience with Assets 2016 Conference
This year I had the opportunity to attend the assets2016 conference in Reno, Nevada and it was an excellent learning experience. For clarity, ASSETS stands for ACM SIGACCESS Conference on Computers and Accessibility. The ASSETS conference is the premier computing … Continue reading
Fan Theory – How does Westeros Learn about Jon Snows Heritage (Hint: Fire)
So, at the end of Game of Thrones Season 6, it is revealed (via the 3 eyed raven) that Jon Snow is actually NOT Ned Stark’s son/bastard as we have previously believed. Jon Snow is the son of Rhaegar Targaryen … Continue reading
Using a Hash to Remove Duplicates in Mongoose, MongoDB – Aggregate Exceeded Document Size Work Around/Fix
One way that has been proposed for removing duplicates in MongoDB is to use the MongoDb aggregate function. Its a straightforward process in which 1.) You specify the criteria for comparison (i.e. the field you want to match in order … Continue reading
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
Wrong HDMI Color (Pink and Green Color Distortion) on Raspberry Pi
So recently I had some quick prototyping to do on a Rapsberry Pi, and after connecting the HDMI cable, the colors looked washed out. Areas that should be white were pink, and areas that should be black were green! Didn’t … Continue reading