electrialstandards

Howdy! Today we are going to build something weird. This system shows the animated alerts when the intruders enters into your secured area. With the help of Raspberry Pi and Python we are going to build it. Before we steping into it.You should know the necessity of the first boot of Raspberry Pi and it's an enhanced version of Human Detector . Hardware Required Raspberry Pi   PIR Motion Sensor   Hookups Hardware Software Required As mentioned earlier, we are going to use Python to finish the Job. Your installed version of raspbian contains the python. If not you can install it by copy paste the code in terminal sudo apt-get install python3  Python Let's do Wiring😄 Simply connect your PIR with your Raspberry Pi as shown in the schematic Schematic Diagram Time to code👊 I made it easy for you guys. Just copy and paste the code in your python editor window and Run (F5) your code. Scripting Window GUI💖 When the intruder is detected, the  python script is designed to open up

Cylindrical capacitors:- Unlike plate capacitors where 2 plates are used to form a capacitor, cylindrical capacitors are made by using two concentric cylindrical shells or wires and these two cylinders and wires are separated by using a dielectric medium. Only difference between plate capacitor and cylindrical capacitor is its shape. Electrical cable is best example for cylindrical capacitors. How to calculate capacitance of a Cylindrical capacitor:- For Calculating capacitance of a cylindrical capacitor let’s take radius of inner cylinder as r1 and outer cylinder as r2. Now let’s take permittivity of dielectric material used to form capacitor as  ε a . As in case of plate capacitor where one plate is acts cathode and other acts as an anode now in similar case let’s take inner cylinder charge per meter length on outer surface of inner cylinder as +q and similarly on inner surface of outer cylinder as –q coulombs. In practical +q charge is considered to be on axis and outer circle is ea