Скачать или смотреть DIY Automatic Alcohol Hand Sanitizer Dispenser घर पर बनाये ,($2 No Arduino Needed)-COVID19 PROJECT-

In this video I have made a portable touch free hand sanitizer dispenser,

--Build the simplest $2 Automated Alcohol Dispenser without using Arduino. Keep your hands clean by filling it with liquid soap, hand sanitizer or with rubbing alcohol. By reducing physical contact, an automated dispenser keeps virus from spreading around in communal areas.
PROJECT BY JINENDRA NAYAK.
E.C ENGINEER.

Parts & Materials:
Proximity Sensor
DC Water Pump
TIP32C PNP Transistor
Aquarium Tubing
Old Glass Jar
Old Ballpen/ Spray nozzles
Sanitizer/ Rubbing Alcohol

THE DESIGN:
I've seen several Arduino automated liquid dispensers circulating the web. I find using Arduinos a bit overkill for this specific project. Arduinos are far too expensive. I figured using a simple transistor or MOSFET would do the job, which would also drastically reduce the costs. Obviously, the absence of a micro controller removes control of over spilling, but then, I did find out that using a smaller nozzle would physically limit the flow of liquid. There are several two transistor RC circuits that would solve the over spilling problem but the single transistor design works well, given that you choose the proper nozzle size.