The global pandemic has changed a lot of things and forced many into self-managing lockdowns. With those extra time, some decided to achieve the “ Finish all Netflix” accomplishment. I decided to pay big bucks to take an online course. After almost a year-long hesitation, I finally determined to spend the money and took the Udacity Self-driving online course during this special time to keep my brain cells alive.

Photo by Roberto Nickson on Unsplash

I have an Electrical Engineer degree, but this did not stop me to explore the coding world. During the time I interned at Tesla, the quiet and self-parking car would never…


In this part, I will go over what I learned in every project and provide some insights into how I approach those problems.

Here is part one of this article:

Project 1: Find Lane Lines

This project introduces how to use the Jupyter Notebook and the OpenCV library. In the later lessons, you will write deep learning code using Jupyter. Jupyter Notebook is widely used by data scientists to visualize intermediate results so that they don’t have to run the whole script over and over again.

In this project, you will practise using basic image…


A less known tale of what powers IoT devices

Photo by Homemade Media on Unsplash

Maybe you have wondered, what is that blocky box on my laptop charging wire or what’s inside the plug of my iPhone charger? Perhaps you are a curious electrical engineer wanting to learn more about Flyback converter, but mostly on the internet are talking about buck and boost converter.

Before we are exploring answers to those questions, I would like to thank you for coming back to this second part of the article. …


A technical article for non-technical readers, and engineering-to-be students

If you have a background in electrical engineering or power electronics, you most definitely heard about the power converters. Even if you do not have such experience, you must have seen different voltage levels of battery, i.e. 1.5V AA battery or 9V battery, and voltage ratings of electronics.

Why are there so many different voltage levels?

The different electronics operate at various voltage levels. For example, anything has a USB cable, like an iPhone charger, Kindle charger, or USB light. They operate at 5V. Anything powered by AA or AAA batteries, like RC cars and remote controls. …

Charing Chen

Curiosity fuels learning, interests empower great work

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