CoronaVirus Killer With Arduino Nano and UV Light

by MicheleMeattini

8.3K2421

Intro: CoronaVirus Killer With Arduino Nano and UV Light

According to the latest guideline on the diagnosis and treatment of the novel coronavirus released by the National Health Commission, the virus is sensitive to ultraviolet light and heat, so ultraviolet radiation can effectively eliminate the virus.

The problem with ultraviolet light is that it irritates the skin and increases the chances of getting skin cancer.
Precisely for this reason, through an Arduino Nano and some sensors and transducers, we can create a PCB capable of controlling a UV lamp to cause it to kill the virus without, however, turning it on with ourselves in the vicinity. In this way we will protect our skin.

STEP 1: Theory Behin the UV Light

To kill the virus in closed spaces, we need a lamp of at least 1.5W per square meter. If left for at least half an hour, it will kill all viruses within a meter of you.

Specifically, if the temperature is less than 20 C or greater than 40 C or the relative humidity is greater than 60% we should keep the lamp on for longer. Although UV is effective in killing the virus indoors, UV lamps should not be used to sterilize hands or other areas of skin, as the radiation can cause skin irritation.

STEP 2: Draw the Electric Scheme

In the Scheme we need an Arduino Nano (any Arduino is fine), a DHT11 temperature and humidity sensor, a buzzer, a relay, a diode, two terminal blocks and a power supply to power Arduino, transforming the 220Vac into 12vdc.

STEP 3: Build the PCB

We arrange the components so that they take up as little space as possible in the PCB and order it.
I have also attached the BOM to the steps.

STEP 4: Write the Code

Next you will need to upload the code to arduino. With the start button we start the cycle and arduino will keep the lamp on for half an hour if the temperature and humidity is optimal, otherwise for a whole hour.

pressing stop returns to the initial condition.

STEP 5: Conclusion

Now with this PCB we can sterilize environments.

Remember not to expose yourself to contact with ultraviolet lamps because they can cause skin irritation.
I do not take any responsibility for my project, it is for illustrative purposes only.

14 Comments

Rose Li 3 years ago

但是眼睛不能直接看着UVC吗？会引起眼痛.

jalilel1913 4 years ago


Is there a BOM available for this project? Also, where can I find a company that can make the PCB Board? I work in a healthcare setting and I think this would be a great secondary environmental services measure.

MicheleMeattini 4 years ago

Hi, I have added the bom to the guide. Email me at michele.meattini2@gmail.com if you want to send me an email with details on what you will do in your company with this project, I would be very pleased!

rafununu 4 years ago

Do you imagine how dangereous you are by letting people believe that a UV lamp can protect them ?
If UV can cure and destroy the virus, don't you think government agencies would have largely spread UV lamps to chicken producers, hospitals and public places. Who cares of cancer when lives are threatened ? Only some UV frequencies can drive to a skin cancer, not all the spectrum. The sun light contains a lot of UVs, so stay naked outside to be safe !

Mammacita509 4 years ago

I am confused. I am sure it is explained that this can be harmful in the process above. People that do not do their research would be victims of staring at this robot for 4 hours. I work as a Medical Laboratory Scientist. We have a built in UV light in our biological safety cabinet. I use it often and I understand there are extra measures that should be taken. There is not a one item fix all. Its a process. I believe this is a progressive tool we could use in sanitation. There are always those that hear something is beneficial and end up over doing it. If this was in my facility.. we would have a procedure in place and follow the strict instructions. This is something health care facilities do. I guess the individual above is worried for those that read headlines and jump to conclusions.

MicheleMeattini 4 years ago

First:
Did you read the article? "Specifically, if the temperature is less than 20 C or greater than 40 C or the relative humidity is greater than 60% we should keep the lamp on for longer. Although UV is effective in killing the virus indoors, UV lamps should not be used to sterilize hands or other areas of skin, as the radiation can cause skin irritation."
Second: https://lmgtfy.com/?q=uv+lamp+to+kill+covid+ This method is used in various cities and hospitals.

rafununu 4 years ago

No, I didn't totally read the article, the title is explicit enough.

sfc5112003 4 years ago

can you send me the code that is used for programming coronavirus using arduino board

electronic_artist_ 4 years ago

cool! it can actually kill germs.

but i feel you will be able to kill germs with UV light but you can kill virus with UV? You cant kill a virus but it might go in hibernation kind of ...may be

viruses have RNA right? how you will kill them.....

psyfect 4 years ago

This is ingenious. Timed lights could be implemented in schools everywhere; disinfecting nightly. Rather than the purported 9 days of life expectancy some viruses can exhibit, an entire army can be put to death rather than significant exposure occur.

This could be implemented most everywhere; especially government based areas, children based (daycare with x+ amount of children) and strongly encouraged for all other facilities.

A novel approach would be to add this as an additional function to current bulbs so that by day it can illuminate and by night it can clean; including smart settings to ensure an empty room (motion activated lights/thermal/etc.) when activating.

Everywhere from huge places like Walmart (activated in zones; since they are 24 hours) to homes with smart light bulb technology (to activate while away from home and in rooms with no pets).

Mickey The Maker 4 years ago

Cool you could make a robot that goes around inside a house "killing"