Andy Kong's Blog

Hello!

Hello everyone!

This past weekend, I attended my last Build18 as an undergrad.

I have been working on replacing a piece of software I use on a weekly basis.

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Hello y'all.

Hello!

You only get to experience 1 fall a year, and by the time you read this you're probably older than 15.

Hello!

Hello everyone!

Hello everyone!

I recently thought about a way to charge capacitors really quickly.

I've been reading about PEDOT, which is a conductive polymer.

I recently bought and tested a refractometer's ability to determine the sugar content of various drinks to gain a better awareness of the stuff I eat.

I bought a Fitbit to access my heartrate live, or at least to track the way it changes over time.

It's a shame: I've met many smart people who were never educated in the fine art of slapping a watermelon to determine their ripeness by their (usually immigrant) parents.

I've been reading a ton of research about how our touch receptors work.

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Previous posts here: [Part 1] and [Part 2] Hello!

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Continuing from last time, I'm trying to make our body channel communication system work without requiring a shared ground between the two devices.

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Yesterday I had my 2nd in-person class this semester.

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Hi!

A lot of brain-computer interface(BCI) researchers will express their results in terms of how much information the user can input in one minute, known as information transfer rate (ITR), measured in bits per minute.

Today I tried a bunch of techniques to try and detect SSVEP peaks in long streams of EEG data.

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Hi!

Today I'm going to tell you about the technique of phase-rectified signal averaging, or PRSA, applied to EEG signals.

I show you tests of some 5W LEDs I bought off Amazon, and how they look projected onto a wall that's far away.

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TL;DR: The OpenBCI GUI sucks, I show you how to stream Ganglion data to Python through BrainFlow to make your own GUI.

I bought some cheap, high-power LEDs off Amazon about a week ago.

WOOO.

So I'm working with some EEG data, right?

We were going over a paper by Disney Research in class last week that said two sufficiently close vibration motors on someone's skin created a sensation in a single spot in between them.

Today in Being Lazy With Andy, I'm gonna show you how to play audio directly from a microcontroller's output pins — no op amp, no transistor.

The problem I'm going to be talking about today is how to translate an analog signal from one range to another.

Here's the code if you want to give it a shot yourself: gist.

Recently I had the need for a 5V battery to power a circuit.