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1. IoT Vehicle Parking System using ESP8266 and Blynk

IoT Vehicle Parking System using ESP8266 and Blynk

We are using vehicles everyday and it is one of the most essential part of our day to day life. In this blog post we will learn how to build a IoT Vehicle Parking System using ESP8266 and Blynk app. This project is for beginners and can be helpful to park or reverse the vehicle. This project will let you know the distance from the any obstacle to your vehicle as per the placement of the sensor.

Things You Need

Ultrasonic sensor HC – SRF04 x 1
WeMOS D1 Mini x 1
Jumper Cables

Working

We will use a ultrasonic sensor to determine the distance in the parking area. The ultrasonic sensor will measure the distance and send it to WeMOS D1 mini WiFi board. WeMOS D1 Mini will send the data to Blynk servers which will further displayed to Blynk app.

IoT Vehicle Parking System using ESP8266 and Blynk

Setting up a project in Blynk App

First you have to setup a project in Blynk app in your smart phone. After setting the app you will receive an AUTH TOKEN which has to be provided in the code.

You can download the Blynk app from below links based on you mobile OS platform.

iOS
Android

Open blynk app, register with an email ID and then login. After logging in we will create a project. Enter the details as shown below. Tap on create below.

It will send you Auth Token on your registered email id.

Now lets add the required widgets. Go to Widget Box (+)

Will add 1 Gauge and 5 LED widgets.

Once added tap on gauge and Configure it as shown.

Configure the LED widgets as well

We have to set below parameters for LED:

Bottom LED need to connect, select Virtual> V2
Next LED need to connect, select Virtual> V3
LED need to connect, select Virtual> V4
LED need to connect, select Virtual> V5
Top LED need to connect, select Virtual> V6

Finally reposition the widgets and resize them. The play button will start the project.

Connection diagram

NodeMCU/WeMOS D1 Mini	Ultrasonic Sensor
3.3V/5V	VCC
GND	GND
D2	Trigger
D3	ECHO

Code

You can download the code from the download link. This code will work in ESP8266 based NodeMCU and WeMOS D1 Mini WiFi boards. You can select accordingly.

After downloading the zip file unzip it. Open the code using Arduino IDE and select the correct board from Tools -> Boards. For uploading the code you can refer to the guides below as per you choice of boards.

Uploading code in NodeMCU
Uploading code in WeMOS D1 mini

Building and Testing

We have connected the sensor with WeMOS D1 mini wifi board as per the circuit diagram. Code is uploaded and powered on.

If you open Blynk app, now you can see the range is showing in the gauge along with LED’s lilting up. This concludes the project is ready to be mounted at the back or front of your car. You can power this project using a power bank and use your mobile hotspots to connect with Blynk and get the data.

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Summary

It’s interesting isn’t it? A simple application through which you can create your own a better project. You can use this project in many other placed to measure distance and trigger alarm. You can also connect a buzzer with this project, which will beep if the vehicle is very near to any obstacle. Try this in your project and provide your feedback. Don’t forget to share this article with others.