Introduction: Mini UV Sterilization Box

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About: A passionate hobbyist, skilled in building electronic projects and 3D printing, works as a mechanical engineer with an artistic flair. With a love for plants and Pokémon, this genius thrives on DIY projects, u…

I made a mini sterilization box for sanitizing, phones, wallets, keys etc.

Overall dimension - 220x120x130 mm

Inner volume - 168x84x90

Supplies

  1. UV- C LEDS
  2. 18650 cells
  3. MT3608 2A Max DC-DC Step-Up Power Module Booster
  4. Arduino Nano
  5. Rocker switch
  6. Push button
  7. WS2812B LED strip
  8. Cables and connectors
  9. Aluminium Tape
  10. TP4056 1A Li-ion lithium Battery Charging Module
  11. 1k ohm resister
  12. N-type Transistor
  13. Buzzer

Step 1: Box Design and 3D Printing

I designed a simple box in CAD where the lower part of the box, houses all the electronics. The top lid is hinged using a 3mm rod. Then changed the design for 3D printing. The material I chose here is PLA, 20% infill with 0.2 resolution. Also, the box can be made, out of Fam board or wood, if you don't have access to a 3D printer.

Step 2: Electronics /Circuit Diagram

Step 3: Coding

The code is simple. For the led strip, I have used the Adafruit_NeoPixel library. The pins can be changed, the led strip requires a PWM pin. The default timer is set to 5 mins, this can be modified in the code. You have to add a delay of 60000ms to add one min.

Attachments

Step 4: Assembly

Step 5: Videos