Aerial photography and FPV flying are getting really popular these years among hobbyists. Multicopter is a great platform for these purposes even if you have little or no flying experience. There are some of my personal …

Minsoo Kim uses the KKmulticontroller board on this bicopter aircraft. There is no sophisticated PID, no Kalman filter, no DCM and it still flies very well.

This is a mini quadcopter that I built a while back. I tried to build a frame myself using polystyrene and  fibre glass rods, but it didn’t work as good as I expected. Later I replace …

This is a very fun experiment I did on how duplicated web content (or copied content from other websites) affects the pagerank of your websites, ultimately leads to lost of clicks and impression. While observing …

In this tutorial I will show you how to program an ATtiny2313 microcontroller chip using Arduino. 

Cloverleaf antenna is a circular polarized antenna for FPV which is way better than the cheap dipole antenna that comes with video transmitters and receivers. Antenna is one of the most important parts of FPV system. …

I have an idea of making a DIY LED lighting strip for my quadcopter. I haven’t received all the parts yet so I will describe rough how it’s going to work. This post is only …

Usually USB hubs are not designed to power anything else from the USB devices such as pen drive or your keyboard and mouse. Those USB hubs generally can provide maximum 500mA current. However the Raspberry …