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PROJECTS ArduinoEnglishDFRobot

Make an Arduino Ozone Generator

DFRobot Feb 06 2019 403

The bathroom of the old apartment will always have some strange smell, but at present I cannot afford to buy a new house. Then I had to buy an ozone machine (shown below) to improve the air quality. The helpless power is too small to achieve the effect of fast deodorization. So here came up with the idea to make my own ozone generator. Searching DIY ozone generator in Internet, a lot of ozone producing device show.

My Arduino work


The ozone machine is operated by a TFT touch screen as a switch. The screen has six touch buttons. The four green buttons represent O3A (No.1 Ozone generator), O3B (No.2 Ozone generator), LGT and FAN. The blue button represents all ON button. And one red button, represents the timing button (timing to turn off in 30 minutes).

Materials in Need

1. Mainboard: DFRobot Mega 2560 V3.0 (Arduino Mega 2560 R3 Compatible) x1

2. Expansion shield: Gravity: IO Sensor Shield for Arduino Mega Due x1

3. Display: 2.8" TFT Touch Shield with 4MB Flash for Arduino and mbed x1

4. Actuator:

Gravity: Digital 5A Relay Module x3

Light Disc with 7 SMD RGB LED x1

Ozone generator module x1

5. Parts: Wire Connector Set x1


Just put the TFT touch screen directly to the MEGA sensor expansion board, with three relays connected to ports 20, 21, 22. And the Three RGB wires are connected to ports 25, 26, 27.


Click to download the TFT touch screen library. (Programming in IDE1.86) 

This programming is focused on the touch screen.

Define the button shape:

char str1[]="O3A";

tft.fillRectangle(19, 29, 98, 108, GREEN);char str1[]="O3A";

tft.fillRectangle(19, 29, 98, 108, GREEN);

Define the button ON/OFF function:

if((x>=19&&x<=98) and (y>=29&&y<=108))   
      { buttonState =buttonState+1;// Read the value from the specified digital pin, high or low.
     if (buttonState %2==1) 

Click here to download Code zip.