Securing Raspberry Pi from unauthorized access

If your Raspberry Pi is connected to the outside world it is vulnerable. In one of previous post I have described how to make web server out of the Raspberry Pi. There you can find how to make it visible using DDNS.

There are few simple steps which you should follow to secure up your tiny server.

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Simple Dual Thermometer

I have done a few project based on AVR microcontrollers. Recently, I have given myself a chance to try out Arduino. After my home thermometer broke down I decided to make a new one. Also it had a few drawback which required fixing. After some time I decided to use Arduino and design a shield for it which would enable this board to measure the temperature and display it. So here it is:

Simple Dual Thermometer

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From a 3D model to a real thing – a landing gear for a quadrocopter

There was a need to create a new landing gear for QuadroCopter which would be lightweight and flexible in a way. With help came the FreeCAD. It is an open source CAD software which can be successfully used when designing 3D parts. Below in a figure on the left is a 3D model and on the right is the printed part. The part was printed using RepRap 3D printer.

freecad_real_object_comparision

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