Introduction

Hello everybody, I am Shafin, a member of Aiversity. I am going to share about how to build a water level sensor for water tanks with a Raspberry pi. This project is going to help you to understand the working of Raspberry pi in detail.

Supplies

Bucket

Water Jug

Raspberry pi

Buzzer

Jumper Wires

Ultrasonic Sensor

Step 1: Connections

Connections

Now let’s talk about the connections of the raspberry pi, ultrasonic sensor and Buzzer.Please follow the circuit diagram as given

Connections:

Ultrasonic sensor vcc to 5v of Raspberry Pi

Ultrasonic sensor Gnd to Gnd of Raspberry Pi

Trigger to GPIO 2

Echo to GPIO 3

Buzzer + to GPIO 4

Buzzer – to Gnd

Step 2: Structure

Structure

· Attach a scale to the bucket.

· Next attach the buzzer and ultrasonic sensor to the scale

Step 3: Code

Code

Now you know the connections and the structure, let’s build the code.

1. Open the Thonny Python IDE

2. Download the Github code: -- https://github.com/Aiversity/Raspberry-pi-project..

3. Open and run the code.

Step 4: Testing

Testing

Fill water in the bucket. When the distance of ultrasonic sensor from the water is around 4 centimetre, the buzzer will beep, alerting the bucket is almost full.

If you have any queries, please ask at Shafin@Aiversity.com

To know more, visit http://aiversity.com