Robotics projects

DIY Automatic water dispenser model using Cardboard & Havi Elements

Last Updated on 11/05/24 0
automatic-water-dispenser-featured-image.jpg

Have you noticed the automatic water bottle fillers in airports or the automatic water taps in malls, theaters, and hotels? These systems address the issue of water wastage while also offering a hygienic solution.

But did you know that you can create a prototype model of that using IR sensors or ultrasonic sensors?

In this blog post, let’s explore how to build a DIY automatic water dispenser project model using Havi’s robotics kit and cardboard. You can use the same model for making coffee or soup or lemonade dispenser as well. A STEAM project to execute in your science fairs.

What is automatic water dispenser?

Automatic water dispensers are machines that dispense water automatically when a bottle, glass, or object is nearby the dispenser outlet. They fetch water from pre-storage cans and dispense it when an object is nearby.

How to make an automatic water dispenser project?

What do you need?

Elements:

  • Power
  • Motor
  • IR pair

Accessories:

  • Submersible pump
  • Power bank with usb cable
  • 3-pin cable

Craft material

  • Disposable water bottle
  • Card board
  • Cutter
  • Scissor
  • Scale
  • Pensil
  • Glue
  • Double-sided tape

The making

1. The dispenser model

Step: 1
Cut a disposable water bottle at the filler part. Then, cut a small rectangular slot from the open part of the bottle.

cut bottles for automatic water dispenser model
Step: 2
Place the submersible pump into the open bottle as defined.

automatic water dispenser making step 2
Step: 3
Draw equal slots on the cardboard using a pencil. Then, cut a square as defined in the image.

automatic water dispenser making step 3
Step 4
Fold the cardboard from pencil marks to create a box shape. Use glue to stick the edges of the box together securely.

automatic water dispenser making step 4
Step 5
Next, cut another square from cardboard and affix it over one side of the box in a manner that it covers one end of the box completely.

automatic water dispenser making step 5
Step 6
Download the template provided. Cut & stick it over the box. There are two different templates provided. One for water dispenser model and another for coffee dispenser machine. You can use whichever you like.

automatic water dispenser making step 6
You can print it on sticker paper for direct application, or print it on regular paper and use glue to stick it to the box. Use A4 & A5 papers for print.

Automatic water/coffee dispenser templates
Step 7
Now, Cut a cardboard piece into a hexagon shape. Fold the board as defined.

automatic water dispenser making step 7
Step 8
Cut a square piece of cardboard and then make a small square slot as specified.

automatic water dispenser making step 8
Step 9
Stick the square shaped piece onto the hexagon piece.

automatic water dispenser making step 9
Step 10
Cut & stick the provided template over it.

automatic water dispenser making step 10
Step 11
Attach the small hexagon part onto the box we made earlier.

automatic water dispenser making step 11
2. The circuit & logic

Step 12
Snap the circuit: Power + IR + Motor. Connect IR pair with 3-pin cable.

automatic water dispenser making step 12
Step 13
Connect the power bank to the circuit using a USB cable. Affix the circuit and power bank onto the box using double-sided tape.

automatic water dispenser making step 13
Step 14
Place the bottle into the box.

automatic water dispenser making step 14
Step 15
Pass the water pump nozzle through the square slot of the box. Note the placement of the small IR sensor. Connect the water pump with Motor Element.

automatic water dispenser making step 15
Step 16
Adjust the potentiometer of the IR Element to the middle position so that the sensor can detect the glass at an adequate distance.

automatic water dispenser making step 16
Step 17
Fill the bottle with water. Water should not touch the power bank or circuit.

Step 18
Turn the power ON. Keep a glass near the water dispense outlet(i.e. water pump nozzle).

automatic water dispenser making step 17

How does it work?

Here, the water dispenses automatically when the glass is near IR LED and stops when glass is far away from IR LED.

automatic water dispenser working
When you switch on the Power Element, the power bank passes the stored current to the Power Element. Subsequently, the Power Element transfers the current to the connected IR Element. The IR Element passes YES only if the connected IR LED detects any object nearby. In rest cases, IR Element passes NO signal.

Hence, when no object(here, glass) is near IR LED, IR Element passes NO signal to connected Motor Element, hence the pump won’t dispense water. When an object is near an IR LED, IR Element passes a YES signal to the connected Motor Element, hence the pump dispenses water.

So, be ready to prepare this project to present in your upcoming science fair. This could be one of the benchmark projects in the “Save water” category & smart home solutions.

Liked this article? Share with your friends


Send me the download link to following email id

    This will close in 0 seconds

    0
    0
    Your Cart
    Your cart is empty
    Calculate Shipping
    Apply Coupon