Hello Friend, sometimes we face
parking issues in tight spaces, especially when we are alone and when we are
new driver. We have to come out of the car to see the space between our car and
another obstacle, like wall or another car. I also have faced this.
So, to tackle this problem I
developed a product and tested it, it works fine too 👍.
This project is designed to
assist drivers in parking their vehicles safely by providing real-time distance
measurement and communication between device and smart phone,
The device is consisted of Arduino
Nano, ultrasonic sensors, 4-digit seven-segment displays (SSD),
Bluetooth module, and 9V battery to deliver both local and remote
monitoring of parking distance.
Details of electronic component used in this project.
Arduino Nano –
Compact Power for Projects
·
The Arduino Nano is
a small, breadboard‑friendly microcontroller board based on the ATmega328P.
Despite its compact size, it offers the same core functionality as the Arduino
Uno, making it ideal for space‑constrained projects.
·
Microcontroller:
ATmega328P, 16 MHz clock speed
·
Memory: 32 KB Flash,
2 KB SRAM, 1 KB EEPROM
·
I/O Pins: 22 total (14 digital, 8 analog)
·
Connectivity: Mini‑USB
for programming and power
·
Size: Ultra‑compact
(45 mm × 18 mm)
Ultrasonic Sensor (HC‑SR04)
·
The HC‑SR04 Ultrasonic
Sensor is a popular distance‑measuring module that uses sound waves to
detect objects. It’s widely used in robotics, automation, and water‑level
monitoring projects because of its simplicity and accuracy.
·
Operating Principle:
Sends ultrasonic pulses and measures echo time to calculate distance.
·
Range: 2 cm to 400
cm (with ~3 mm accuracy).
·
Pins: VCC, GND,
Trigger, Echo.
·
Supply Voltage: 5V
DC.
· Applications: Obstacle detection, water tank monitoring, smart parking, robotics.
TM1637 4‑Digit 7‑Segment LED Display
·
The TM1637 Display
is a compact module designed for showing numbers, making it perfect for clocks,
counters, and sensor readouts. It uses the TM1637 driver IC, which simplifies
communication with microcontrollers like Arduino and ESP32.
·
Digits: 4 digits,
each with 7 segments + optional colon.
·
Interface: 2‑wire
serial (CLK + DIO), easier than SPI/I²C.
·
Pins: VCC, GND, CLK,
DIO.
·
Supply Voltage:
3.3V–5V DC.
·
Applications:
Digital clocks, temperature displays, counters, timers.
Bluetooth Module (HC‑05 / HC‑06)
·
The HC‑05/HC‑06
Bluetooth Module is a widely used wireless communication device that
enables microcontrollers to exchange data with smartphones, laptops, or other
Bluetooth‑enabled systems. It is perfect for adding wireless control and
monitoring to your projects.
·
Communication Type: Serial UART (TX/RX).
·
Modes:
·
HC‑05 → Master & Slave.
·
HC‑06 → Slave only.
·
Range: Up to 10
meters.
·
Supply Voltage:
3.6V–6V DC.
·
Pins: VCC, GND, TXD,
RXD, KEY/EN.
·
Applications:
Wireless robotics, home automation, data logging, remote control.
9V battery, to power up the product.
Functionality of the product
·
The ultrasonic sensor
measures the distance between the car and nearby obstacles.
·
The Arduino Nano processes
this distance data.
·
The measured distance is
displayed on the 4-digit SSD for immediate feedback to the driver.
·
Simultaneously, the Arduino
transmits the distance data wirelessly via the Bluetooth module to the connected
smart phone.
What is the working Principle?
- Distance Measurement: The
ultrasonic sensor sends out sound waves and calculates the time taken for
the echo to return, determining the distance to obstacles.
- Local Display: The
Transmitter Unit shows this distance on its SSD, giving the driver
immediate feedback.
- Wireless Communication: The
distance data is sent via Bluetooth to the connected smartphone.
- Smart Phone: The Smart
phone displays the same distance, enabling remote monitoring and
assistance, to read the value one Bluetooth apps has to be installed on
the smart phone.
Where can be this used?
·
It can be very useful for
the lone driver in tight parking spaces if the car doesn’t have the appropriate
parking cameras.
·
By arranging the device in
appropriate manner, it can, also, be used as Remote monitoring in parking lots
or garages.
·
For educators, it can also
be used as Educational Project demonstrating sensor integration, Bluetooth
communication, and real-time data display.
Key Features
·
Dual display system (local
+ remote: wireless using Bluetooth), it has two modes of display, one is local
in the form of seven segment display, and another is remote display, your
smartphone can be used to see the distance values remotely, may be in the car during
parking.
- It is a Compact design with Arduino
Nano, however size can be further reduced by using ESP32, since this
module will be having inbuilt Bluetooth module.