Unfinished articles, blueprints, projects in progress, abandoned projects.

Hobbyking X666/X525 quadcopter frame improvement

This modification makes it possible to fold and unfold the frame without any tools. Furthermore a larger box for the electronics stuff can be mounted on the frame since you don't need tool access to screw heads anymore.

ESP8266 antenna comparison

ESP8266 antenna comparisonDifferent ESP826 modules come with a variety of antenna options.

Let's find out which one performs better.

This experiment carried out mostly for fun.

2.4GHz Amplifier XQ-02A Teardown

XQ-02A WiFi AmplifierXQ-02A is a bi-directional signal amplifier module designed for the 2.4GHz band.
It features automatic direction (send or receive) identification and switching.
Maximum output peak power is 2W.