About this Project
In this tutorial, you will learn how to make an automatic hand sanitizer using an IR sensor. It is very simple, all the components that are used in this tutorial are cheap and easily available. You can also buy the kit from the provided link.
Components needed for this project
- IR sensor-1
- 1 Kohm resistor-1
- TIP32-1
- DC water pump-1
- USB cable-1
Get 60% OFF, buy the kit from here.
Working of this project
When you will place your hand in front of the IR sensor, the IR sensor will give an output signal on the data pin and that data pin is connected to the transistor signal pin. The signal from the IR sensor will turn on the transistor that will turn on the water pump motor. Till the hand is present in front of the IR sensor, the water pump motor will remain turned on. When you remove your hand from the sensor. The IR sensor will not give any signal and the water pump will be turned off.
Circuit diagram of the Automatic Hand Sanitizer (Based on Kit)
Connections
- Connect the negative wire(Black) of the USB cable to the GND pin of the IR sensor.
- Connect the negative wire(Black) of the water pump to the negative wire of the USB cable.
- Connect the positive wire(Red) of the USB cable to the VCC pin of the IR sensor.
- Connect the 1st terminal of the transistor to the positive wire of the USB cable.
- Connect the OUT pin of the sensor to the 1K resistor.
- Connect the 1K resistor to the 3rd pin of the transistor.
- Connect the positive wire(Red) of the water pump to the 2nd pin of the transistor.
Battery operated Automatic Hand Sanitizer circuit
Connections
- Connect the negative terminal of the battery to the GND pin of the IR sensor.
- Connect the 2nd terminal of the LM7805 to the negative terminal of the battery.
- Connect the 1st terminal of the IRF540 to the negative terminal of the battery.
- Connect the 3rd terminal of the LM7805 to the positive terminal of the battery.
- Connect the positive wire of the water pump to the positive terminal of the battery.
- Connect the 1st pin of the LM7805 to the VCC pin of the IR sensor.
- Connect the OUT pin of the IR sensor to the 2nd pin of the IRF540.
- Connect the negative wire of the water pump to the 3rd pin of IRF9540.
Connections
- Connect the negative terminal of the battery to the GND pin of the IR sensor.
- Connect the 2nd terminal of the LM7805 to the negative terminal of the battery.
- Connect the 3rd terminal of the IRF9540 to the negative terminal of the battery.
- Connect the 3rd terminal of the LM7805 to the positive terminal of the battery.
- Connect the positive wire of the water pump to the positive terminal of the battery.
- Connect the 1st pin of the LM7805 to the VCC pin of the IR sensor.
- Connect the OUT pin of the IR sensor to the 2nd pin of the IRF9540.
- Connect the negative wire of the water pump to the 1st pin of IRF9540.