Old PSTN entry phone - door opening - #3

In this article I will discuss  about how to design a circuit capable to "read" the rotary dial and relative code.

A family size UV sterilizer - intro

In this time of COVID is necessary to sterilize often things, like masks and objects.

To do so I decided to build an UV-C Box Sterilizer.
UV lights are used to sterilize object since ... forever :). On the market exists UV sterilizer for phones and small objects but this is the point, is not easy to fit in it many objects.

Thus the idea to build a bigger box capable to easily sterilize everyday objects, including facial masks and small PPE.
I will update this article every time I will add more information/details about the construction/test.