A REVIEW ON A COST EFFICIENT AUTOMATIC HAND SANITIZER USING AURDINO

A sanitizer is designed to kill germs on skin, objects and surfaces. This project aim is to plan and execute a low cost brilliant hand sanitizer gadget with door regulator in light of the ATMEGA328P(Micro-controller) electromagnetic lock and Ultrasonic sensor that can assist with settling a the difficulties looked by security guards at the various stations, for example, bank doors, school-gate, medical clinic gate and so on. in enforcing this to hand sanitizing activity prior to giving people access any place they are expect to enter as some of people are not able to work together, some gander at it as a for wastage of their time and furthermore sometimes this security guards can allow total to people in without sanitizing in light of the fact that they are there companion or family relative which is exceptionally risky. Along these lines, the smart hand sanitizer is stationed at the entrance door and it was connected to the door in such a method of matter that sanitizer controls it. That is to say,when an individual needs to get to the entrance door, they should first sanitizer their hand or probably the door will remain locked. With these shrewd hand sanitizer dispenser, a ultrasonic sensor is utilized to actually look at the presence of hands beneath the power source underneath the sanitizer machine. It will be persistently work out the distance between the sanitizer outlet and itself and advises the micro-controller to turn on the servo engine as at whatever point the distance is under 10cm to push the sanitizer out and following the sanitizer outlet dropping some sum into your hands, the electromagnetic lock will de-energize (unlock the door) illuminating a green LED  then the subsequent servo engine will be open the entrance door. Otherwise, the door will be neither unlock nor opened but a red LEDS will be continuously be ON.