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DIY Automatic Alcohol Dispenser ($3 No Arduino Needed)

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Build the simplest $3 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.

INSTRUCTABLE TUTORIAL:
https://www.instructables.com/id/DIY-Automatic-Alcohol-Dispenser-No-Arduino-Needed/

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.

#FIGHTCOVID19 #COVID19 #DIY #CoronaVirus
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Parts & Materials:
- Proximity Sensor ($0.6 - https://bit.ly/3ape7I2 )
- DC Water Pump ($1.8 - https://bit.ly/3ayT5qJ or $3 - https://bit.ly/3aouip4)
- TIP32C PNP Transistor ($0.2 - https://bit.ly/39oAZpO )
- Aquarium Tubing
- Old Glass Jar
- Old Ballpen
- Sanitizer/ Rubbing Alcohol
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Schematic Link: ( https://bit.ly/2UljPVM )
Category
HOW TO

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