Last post I have talked about my first tricopter which was made long time ago from 2012. Then I planed to make another one, but this time I intended to make a quadcopter. So I started looking for some ESCs (Electronic speed controller) online. Since having some experiences from the tricopter, I’ve tried to search for some pre-loaded Simonk ESC that I don’t have to load the simonk firmware again as it’s quite messy. Once wandering around on Ebay, Aliexpress and some other online market places, I found some really cheap simonk pre-loaded ESC and decided to try one.

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I found this article about color spaces is very useful and important when we do something related to image processing, color tracking, etc… with OpenCV, Matlab or even microcontroller that could be implemented in further projects. This could give you a basic understanding on how to distinguish various types of color spaces.

This post is originally from Utkarsh Sinha, http://www.aishack.in/tutorials/color-spaces-1/

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I used to order some free samples from TI (Texas Instruments) long time ago when I was in Vietnam for my class projects. Since the import regulation in Vietnam is quite strict and the electronics market is not so potential so that only few companies provide free samples and free shipping over there. I have tried to get free samples from some big, famous companies but only TI gave me free samples that time. Now, when staying in Singapore, I have tried again to get some samples from other companies for my current project and I chose Freescale. As my project needs some sort of capacitive touch buttons so I have looked on the internet and found some quite popular and famous chips from Freescale including: MPR121 and MPR031.

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