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20 Second Automatic Hand-washing Timer | Coronavirus (COVID-19)
How to make a Automatic Hand-washing Timer with Arduino
In this tutorial we will learn how to make a Automatic Hand-washing Timer Using Arduino | Wash hands and stay safe | Coronavirus (COVID-19).
For this tutorial we will use IR Sensor, OLED Display and Arduino UNO.
Hardware Required :
Project circuit :
Project circuit diagram is shown below.
How IR Sensor Works
As we give power to IR Sensor using Arduino at that time White LED light is transmitted the IR rays. This IR ray is strike with the thing , it’ll reflect back and received at black LED light.
As this phenomenon occur IR Sensor Produce Low or High Voltage at output pins. It depends on what kind of sensor you select .
Your Programming is trusted which type of sensor you decide on .
So you’d like to ascertain it out.
- Active High Sensor : Output is High
- Active Low Sensor : Output is Low
Link to the Code :
Links Coronavirus :
- Automatic Soap dispenser Using Arduino | Coronavirus (COVID-19)
- Automatic Water dispenser using Arduino | Coronavirus (COVID-19)