Reverse Car Parking Aid - Circuit Diagram

This reverse car parking assistant can protect your car from any damage while reverse parking. Though modern cars incorporate various reverse car parking sensors and cameras, this hobby circuit could be interesting and handy for many of us. It indicates the distance of car from any object and raise an alarm when it reaches close to the wall or the object and needs to be stopped. .

Here are the quick easy steps and a detailed explanation to understand the concepts and working of this circuit.

Go: Reverse car parking circuit

Make a Digital Tachometer using Arduino

Tachometer is a RPM counter which counts the rotation frequency of a rotating body. Here is an Arduino pro mini based digital tachometer which uses IR sensor module (A combination of IR transmitter and receiver) to detect object for count rotation of any rotating body. As IR transmits IR rays which reflect back to IR receiver and then IR Module generates an output or pulse which is detected by the arduino controller when we press start button. It counts continuously for 5 seconds. 

Watch the working of tachometer in the below video:

It's fun, useful and easy to make. Find here the details of this project:

Tachometer using Arduino