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no-touch-alcohol-dispenser-31119d-en.md

It's been almost a year since I last did an Arduino-related project.

I know that this type of project is pretty late for 2021, but I just had no time to make, shoot & edit something too time consuming due to my workload.

I only have a few hours of free time each day and when I'm not working, I'm either sleeping to rest my eyes or just watching anime or idol shows to chill while waiting for the next batch of work to do.

I know I could've just dedicated a few days to finish the pending videos, but paying bills needed to be prioritized and sometimes I just don't feel like doing anything.

Alright! Now that my short rant is done...

This video contains a step-by-step procedure on how to make a pretty cheap DIY No Touch Alcohol Dispenser using Velostat as a pressure-sensitive switch and an Arduino NANO.

Using a pretty basic code, we can do the same thing like what some of the aftermarket alcohol dispensers do.

By using the velostat as a pressure-sensitive switch, we can make sure that only a human can activate it.

PS. You can use a better suited or better sealed container for the alcohol if you want to. I'm planning to do that as well when I find some.

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Helpful Links:

CH340 Driver

What Is A Velostat?

University of Wyoming's Downloadable Velostat Powerpoint Presentation

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Social Media Links To Follow (I mean, if you want to):

Facebook

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Post-Soldering

Wire Management

I used a carton packaging that contained some stuff that I've bought online for the enclosure.

Watch The Full Video Here

https://youtube.com/@HeathenHacks

EXPANDED TECHNICAL DETAILS

Automatic Hygiene System

This project provides a robust solution for hands-free sanitizer dispensing using a submerged DC pump and infrared technology.

  • Infrared Proximity Sensing: Uses an IR obstacle sensor module. When a hand is placed under the nozzle, the IR beam reflects back, triggering the Arduino.
  • Timer-Controlled Dispensing: The Arduino switches a MOSFET or Relay to run a 3V/6V water pump for a precise 500ms burst, ensuring a consistent amount of alcohol is dispensed every time.

Durable Design

  • Battery Management: Designed for long-term placement; the code uses the LowPower library to minimize current consumption when the dispenser is not in use.

ข้อมูล Frontmatter ดั้งเดิม 

title: "No Touch Alcohol Dispenser"
description: "Using Velostat As Pressure-Sensitive Switch"
author: "Heathen_Hacks-v2"
category: ""
tags:
  - "health"
views: 1114
likes: 0
price: 699
difficulty: "Easy"
components:
  - "1x 5x8mm Silicone Tube"
  - "1x Jumper wires (generic)"
  - "1x Connector Adapter, DC Power - 2.1mm"
  - "1x 5v DC Adapter"
  - "1x Speaker: 0.25W, 8 ohms"
  - "1x Velostat Sheet"
  - "1x Hook Up Wire Kit, 22 AWG"
  - "1x FR4 Protoboard"
  - "1x Relay (generic)"
  - "1x Breadboard (generic)"
  - "1x 3v-5v Small Submersible Pump"
  - "1x Soldering iron (generic)"
  - "1x Solder Wire, Lead Free"
  - "1x Arduino Nano R3"
tools: []
apps:
  - "1x Visual Studio Code Extension for Arduino"
  - "1x Arduino IDE"
downloadableFiles:
  - "https://projects.arduinocontent.cc/9f805555-33a0-4288-bb07-158a0242188d.cpp"
  - "https://projects.arduinocontent.cc/9f805555-33a0-4288-bb07-158a0242188d.cpp"
documentationLinks: []
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seoDescription: "Build a No Touch Alcohol Dispenser using Velostat as a Pressure-Sensitive Switch with Arduino."
videoLinks:
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lang: "en"