Smart city of Vukovar, Croatia represents a prototype of the real projection (look) of one part of the main road in Vukovar, Croatia leading toward another city in our region as well as the beautiful promenade along the bank of the river of Danube. It demonstrates of what a technological future should look like. By using all the sensors, IoT and high technology electronic boards, we are able to collect the information in real time, which allows us to more efficiently plan and implement utilization of the urban infrastructure as being the foundation of every “Smart city”.

My motto is: “We provide a solution for less pollution”

How I made it:

STEPS

Step 1

The basis for the model design is a 4 mm thick plywood with its flyers to achieve a better and more solid structure. Connecting of all parts of the model will be achieved by using the wood glue. The cutting of plywood according to dimensions is done by an angle grinder (it's the easiest way to do it straight and quick since the plywood is very thin).

Step 2

The model is made from two parts. The basis of the model dimensions 750 x 720 mm will feature a promenade along the Danube River for which I used the Arduino Uno board, a photo resistor, infrared sensors and LED lighting. At the position of the upper surface of the load bearing part of the model, I created the basis for the main part of the model according to instructions. The main part of the model (detachable) will be 750 x 500 mm in size and will present the prototype the county main road in Vukovar. In step 2, after measuring, cutting and connecting all the cut parts on the lower bearing structure, a 2 cm styrofoam is placed with a net in the Danube riverbed, which is strengthened and crossed by flexible tile glue, while in the main part of the model there is an artificial grass on the slope facing the promenade. Artificial grass is attached to the slope using the transparent silicone. In step 2, after all modelling work is finished, the design of the model is followed by painting according to the actual appearance of the road and the promenade in Vukovar. These surfaces are first painted with the core color, followed by synthetic enamel paint for the final appearance and strength. All the painting is done manually by brush or with a paint roller.

Step 3

At the same time as the entire model is built, a solar tracker construction is made from wooden flyers. During the production of all wooden parts, all defects are removed, correction and adjustment is done. After the two layers of final color, a decorative granulate is applied in the place where the solar Sun tracker will be attached to the main surface. For strengthening the granulate I used the super glue.

Step 4

In step 4, Arduino codes are being programmed for smart city lights, smart parking, smart traffic lights and a solar Sun tracker. In addition to programming, drawings are made on the 3D printer, brackets and traffic lights are printed for the intersection on the main road. Except programming, all other necessary parking spaces and accompanying facilities on the main road are made. Also. The step 4 includes the installation of the Arduino boards and all other electronic components for the final appearance of smart city model.

Materials used in this project

• Housing for the smart parking servo (it’s made manually according to the dimensions of the 4 mm plywood)
• Housing for the smart parking LCD display (it’s made manually according to 4 mm plywood dimensions)
• Smart parking fence (made from 10 x 10 mm fly wood)
• Solar lighting (made from spare parts)
• Decorative granulate 2-3 mm Wedding Decor Vase Candle Decoration Floral
• Lawn Artificial Grass Carpet Home Garden Floor Dollhouse Moss Decoration HY
• Wooden box 11 x 10 x 21 cm used for skyscraper
• Solar panels (used from the spare parts as the skyscraper roof)
• 5.5V 100MA Micro Mini Power Solar Cells Panel Board CL Toy 84.5*55.5mm Set R2Q7
• Housing of the solar Sun tracker (it’s made manually from fly fir)
• Traffic lights (3D printed)
• LED lighting pole for city lights (made from the pen housing)
• Small benches by the Danube promenade (Lego bricks)
• Wood steps towards the Danube (it’s made manually from wood fly wood)
• Lego bricks (used from own home toys)
• Metal Die Cast Kids Cars
• Mini chest of drawers, birch plywood, 16 ½x7x12 5/8 " (42x18x32 cm)
• Genuine Arduino Uno R3 (1x)
• Arduino ABX00011 MKR1000 Wi-Fi Enabled IoT Board 3.3V (3x)
• SG-90 SG90 9g Micro Gear Servos Motor Car Plane Boat Raspberry Pi (2x)
• Obstacle Avoidance IR Sensor Infrared Photoelectric Module Arduino Raspberry PI (9X)
• Photoresistor LDR CDS 5mm Resistor Sensor Light-Dependent GL5516 Arduino (3x)
• 5 mm Ultra Bright Round Water Clear LED Bulb 3V Light Emitting Diode (5x)
• 2.54mm 1-Pin Jumper Male to Female with wire for Arduino Breadboard
• 1/4W 0.25W Carbon Film Resistor ±5% 1K Ohm to 4.7M Ohm (10x)
• Hub with Power Supply 5v Vertical 7-Port USB 2.0 High-Speed Divisor Kit (1x)
• 1m A Male to MICRO USB 2.0 Charge Cable Phone Charger Lead Data (3x)
• USB Cable 52cm Blue for Arduino UNO 2560 R3 Printer Scanner (1x)
• Soldering iron
• Soldering wire

INDIVIDUAL DESCRIPTION OF EACH MINI PROJECT

SMART CITY LIGHTS 

along the river of Danube which use the photo resistor, infrared sensors, led lights, and Genuine Arduino UNO board. The main principle is that the LED lights are on with a reduced brightness, but as the person approaches every light, the infrared sensor activates the program which turns on the light much brighter. As you leave, it comes back to reduced brightness. At this point of our Humanity, in the 21st Century, we must look for a new ways and solutions on how the save more energy to avoid power outages and to bring electricity to rural areas on this Planet. Our smart city lights offer tremendous savings in electricity consumption.

SMART TRAFFIC LIGHTS 

are very adaptive to the current traffic. By using the infrared sensor placed in the asphalt before the traffic light, it senses the movement, and according to the current situation regulates the traffic. Smart traffic lights let us avoid situations where the driver would have to sit in the car and wait for a green light to come up when there is no one around at the intersection. By using this type of the traffic lights, we can drastically reduce traffic jams. For this project I used Genuine Arduino MKR 1000 board.

SMART PARKING 

uses an infrared sensor to determine whether here is an empty parking space available and how many are left at the parking lot. As the vehicle approaches the parking, the sensor gets activated showing available spaces on the LCD display, opens the ramp and enables the entrance into the parking lot. As soon as the vehicle enters the ramp goes down to its normal position. The same procedure is when vehicles leave the parking lot. For this project I used Genuine Arduino MKR 1000 board.

SOLAR SUN TRACKER 

uses a photo resistor to adjust the angle of the solar panels according to the strongest source of the Sun light. This way of tracking the Sun light gives us the opportunity to increase the percentage of using the Sun energy which is stored in a power bank for later use and distribution of electricity to the city lights. For this project I used Genuine Arduino MKR 1000 board.

At the end, by using all the sensors and the Arduino boards mentioned above programmed by the Arduino codes, I can collect the information in real time, which allows us to more efficiently plan and implement utilization of the urban infrastructure as being the foundation of every “Smart city”.