Coronavirus Sterilizer Box | Food Mask Sterilizer
The Covid technology revolutionized 2020 for all of humanity. The way it spread rapidly forced us to wear face masks and gloves to protect our skin from everything we touched. Certainly,…
Know the mission before touching a wire.
Understand what you are making, prepare the right tools, and make the workbench safe.
Project details
Coronavirus Sterilizer Box | Food Mask Sterilizer is a arduino project. The Covid technology revolutionized 2020 for all of humanity. The way it spread rapidly forced us to wear face masks and gloves to protect our skin from everything we touched. Certainly,…
- Source pages
- 696-699
- Named parts
- 4
- Build goal
- Working, tested prototype
Tools you need
- Digital multimeter
- Wire stripper and side cutters
- Soldering iron with a fine tip
- Current-limited bench supply
- Computer with a data-capable USB cable
Use eye protection, good lighting, and a clean insulated surface throughout the build.
Safety precautions
- Disconnect every power source before changing a connection.
- Check component polarity, pinout, and supply voltage twice.
- Use a current limit for the first power-up.
- Keep liquids, loose metal, and uninsulated wires away from the bench.
Gather, identify, and understand every part.
Use the standardized inventory, then open What's this? to learn each part's role, advantages, limitations, handling, and specifications.
What's this?Image, role, pros, cons, handling & specifications
Arduino Uno
A programmable controller that reads inputs, makes decisions, and drives the project's outputs.
What it does hereIt is the control centre and must use the documented board, pin map, supply, and logic level.
Buy / compare this part ↗Advantages
- Reprogrammable and reusable
- Large learning ecosystem
- Complex behaviour remains changeable
Limitations
- GPIO voltage and current are limited
- Some pins affect boot or communication
- Loads normally need a driver
Handling
- Disconnect power before rewiring
- Avoid static discharge
- Never power motors, relays, or pumps directly from GPIO
Specifications to verify
- Use the exact model, value, package, and rating listed for Arduino Uno; similar-looking parts are not always interchangeable.
- Confirm operating voltage, logic level, pinout, memory, USB interface, and maximum GPIO current.
What's this?Image, role, pros, cons, handling & specifications
Buzzer
An output component turns an electrical control signal into light, sound, motion, switching, or displayed information.
What it does hereIt presents the circuit result or acts on the physical world.
Buy / compare this part ↗Advantages
- Makes system state visible
- Can be tested separately
- Supports clear troubleshooting
Limitations
- Loads may exceed controller current
- Polarity or driver direction can matter
- Inductive loads create voltage spikes
Handling
- Use the documented driver stage
- Check polarity and load current
- Add flyback protection for inductive loads
Specifications to verify
- Use the exact model, value, package, and rating listed for Buzzer; similar-looking parts are not always interchangeable.
- Confirm voltage, current, polarity, interface, driver requirements, and duty cycle.
What's this?Image, role, pros, cons, handling & specifications
LCD display
An output component turns an electrical control signal into light, sound, motion, switching, or displayed information.
What it does hereIt presents the circuit result or acts on the physical world.
Buy / compare this part ↗Advantages
- Makes system state visible
- Can be tested separately
- Supports clear troubleshooting
Limitations
- Loads may exceed controller current
- Polarity or driver direction can matter
- Inductive loads create voltage spikes
Handling
- Use the documented driver stage
- Check polarity and load current
- Add flyback protection for inductive loads
Specifications to verify
- Use the exact model, value, package, and rating listed for LCD display; similar-looking parts are not always interchangeable.
- Confirm voltage, current, polarity, interface, driver requirements, and duty cycle.
What's this?Image, role, pros, cons, handling & specifications
Transformer
A power component supplies, converts, stores, or regulates energy for the project.
What it does hereIt must provide the documented voltage, polarity, isolation, and sufficient current safely.
Buy / compare this part ↗Advantages
- Stable power improves reliability
- Current limiting protects first tests
- Regulation reduces resets and noise
Limitations
- Wrong polarity can cause immediate damage
- Underrated parts overheat
- Mains circuits require qualified supervision
Handling
- Measure output before connection
- Use a fuse or current limit
- Insulate exposed conductors
Specifications to verify
- Use the exact model, value, package, and rating listed for Transformer; similar-looking parts are not always interchangeable.
- Confirm input/output voltage, current, polarity, connector, isolation, and thermal rating.
Connect one verified path at a time.
Explore the named components and standardized signal flow, then use Source Check to verify exact physical pins, values, and topology before applying power.
Trace this circuit.
Coronavirus Sterilizer Box | Food Mask Sterilizer: interactive parts, standardized terminals, responsive anchored wires, student explanations, and the original circuit reference in one shared system.
Trace before wiring
Follow power, ground, inputs, processing, and outputs in that order. Never guess a pin from package shape alone.
Connect with power off
Make short, labelled connections and share a common ground only where the schematic requires it.
Inspect every joint
Check continuity, polarity, adjacent shorts, and loose connections before the first power-up.
Open all source diagrams and build views 3 visuals
Confirm the hardware-only control path.
This project does not include firmware in the source. The circuit itself provides the required behaviour.
How to connect
- Match every controller label to the circuit view and source pin map.
- Join grounds before signal wires when separate low-voltage supplies are used.
- Keep motors, relays, pumps, and other loads on a suitable driver and external supply.
Common mistakes
Reversed VCC/GND, board-label versus GPIO-number confusion, missing common ground, and charge-only USB cables.
Troubleshoot
Disconnect loads, continuity-test one path at a time, then test with a current limit.
Software preparation
No IDE, board package, library, or firmware upload is required for this project.
If you add a programmable controller as an extension, document its pin map separately.
How to upload code
The original design is implemented entirely in hardware, so proceed after verifying the circuit and supply.
Assemble, deploy, test, and troubleshoot.
Use the complete source notes in build order, then pass the final checks before calling the project finished.
Build in functional stages
- Power and regulation
- Controller or processing stage
- Inputs and sensors
- Outputs and loads
- Enclosure and strain relief
Power up safely
- Inspect unpowered continuity first
- Apply the lowest safe current limit
- Measure supply rails before signals
- Add one load at a time
- Record expected and actual results
Work from simple to complex
- Confirm power, ground, polarity, and orientation
- Compare each pin with the source
- Test inputs separately from outputs
- Replace only one variable at a time
- Power off before every correction
Follow the documented instructions.
These notes come from this project's source and remain in their original order.
Project overview
Project build noteThe Covid technology revolutionized 2020 for all of humanity. The way it spread rapidly forced us to wear face masks and gloves to protect our skin from everything we touched. Certainly, we can put on a mask when we are outside but what do we do if we bring something home from the store or trade with someone else? The fact that patients and employees exchange files and paperwork with doctors or with each other, cannot be sanitized by applying sanitizers to these outside items.
Circuit Diagram
Project build noteUsing an arduino-powered system powered by a smart electronics chip, we solve this huge problem. To solve the problem, we designed an ultraviolet- sanitizing box that has a 60-degree angle. 8 uv tubes are employed by the system in order to achieve this task. All viruses have been killed by UV C in
a matter of seconds
Project build noteComponents Arduino Uno LCD Display, Buzzer Lid Sensor, UV-C Tubes, Buttons Metal Mesh, LED’s
IC’s, Resistors Capacitors,Diodes, Transistors, Transformer Base frame, Supporting Frame Mounts and Joints Screws and Bolts
The Arduino COVID Disinfection box has the following Key Aspects A 360-degree approach to disinfection All Coronaviruses can be deactivated. Shutdown and alerts based on timers Sterilizes masks, packaged foods, electronics etc. Specifying the duration of the sterilization Shut off automatically Easy To Use We use no water and no chemicals | Environmentally friendly
Sterilization starts when the start button on the Arduino controller is pressed and the controller takes user inputs for time setting. This device shuts off automatically after it reaches the sterilization temperature. Another shutoff system also prevents lipids from being opened by users while sterilization is taking place.
Advantages
Project build noteNo Chemicals or Water Sterilization Sterilization at 360 degrees Demonstrated to deactivate Bacteria and Viruses Sterilization time that can be adjusted Untimely opening will result in automatic safety shut off. Disadvantages Since it is not large enough to sterilize large objects, it is not suitable. It does not have a battery and is not suitable for car use.
You built Coronavirus Sterilizer Box | Food Mask Sterilizer.
You followed the full workflow from understanding the mission to testing the finished project. That is a real engineering achievement - well done.
Play the Space Race Game using the Arduino and Nokia 5110 Graphic Display
Ready to reuse what you learned in another project from the same track?
Start this project →