This document summarizes an automatic gate project using an Arduino, photocell sensor, and ultrasonic sensor. The project aims to create an automatic gate that opens when a car approaches, detected by the photocell and ultrasonic sensors. The document outlines the tools and materials used, including the Arduino, sensors, servo motor, buzzer, LED, and describes how the sensors and Arduino controller work together to open the gate automatically when an object is sensed. It provides wiring diagrams and explains that the photocell sensor under the road will trigger the gate to open when covered by a passing vehicle.

1. Automatic Gate with
Photocell Sensor and
Safety Ultrasonic
Sensor for Bridge
By group 2
-M. Rifqi Darmawan
-Rizal Nurjaman
-Tella Nadina Fisabila

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3. Introduction
Instrumentation is a collective term for
measuring instruments used for
indicating, measuring and recording
physical quantities, and has its origins in
the art and science of scientific
instrument-making.
Nowadays, as technology develops,
instrumentation is often used in various
fields of our life. So, in our project, we
make “Automatic Gate with Photocell
Sensor and Safety Ultrasonic Sensor”
with using arduino as a controller.
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4. TOOLS AND
MATERIALS
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5. ARDUINO UNO
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ARDUINO UNO IS USED AS A
MICROCONTROLLER.
THERE ARE THE SPECIFICATION OF
ARDUINO UNO:
Microcontroller ATmega328P – 8 bit AVR family microcontroller
Operating Voltage 5V
Recommended Input
Voltage
7-12V
Input Voltage Limits 6-20V
Analog Input Pins 6 (A0 – A5)
Digital I/O Pins 14 (Out of which 6 provide PWM output)
DC Current on I/O Pins 40 mA
DC Current on 3.3V Pin 50 mA
Flash Memory 32 KB (0.5 KB is used for Bootloader)
SRAM 2 KB
EEPROM 1 KB
Frequency (Clock
Speed)
16 MHz

6. PHOTOCELL
SENSOR
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A photocell is any of a wide range of
sensors that react based on the presence of
light or electromagnetic energy. They can be
found in many different forms, from solar
panels that use light to generate electricity, to
photoresistors, which shift in resistance based
on how much light is present. This device is
one of the most important modern
advancements, allowing for a whole range of
new technologies to be created.

7. Ultrasonic sensor
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As the name indicates, ultrasonic
sensors measure distance by using
ultrasonic waves.
The sensor head emits an ultrasonic wave
and receives the wave reflected back from
the target. Ultrasonic Sensors measure
the distance to the target by measuring
the time between the emission and
reception.

8. SERVO MOTOR
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A servo motor is a rotary actuator or linear
actuator that allows for precise control of angular or
linear position, velocity and acceleration. It consists
of a suitable motor coupled to a sensor for position
feedback. It also requires a relatively sophisticated
controller, often a dedicated module designed
specifically for use with servomotors

9. BUZZER
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A buzzer or beeper is
an audio signalling device, which may
be mechanical, electromechanical,
or piezoelectric (piezo for short). Typical
uses of buzzers and beepers include alarm
devices, timers, and confirmation of user
input such as a mouse click or keystroke.

10. LED
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A light-emitting diode (LED) is a semiconductor light
source that emits light when current flows through it.

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HOW TO MAKE THE
PROJECT

13. DESIGN
PROJECT
▫ Prepare tools and materials
needed, there are: Ice
cream sticks, wood, acrylic
paint, and brush.
▫ Cut and stack the ice cream
sticks into the shape of the
house, fence, and gate.
▫ Used wood as a base.
▫ Color it with acrylic paint.
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WIRING DIAGRAM

15. HOW TO
WORK?
The LDR sensor will be
stored under the road, so that if the
LDR sensor is covered by a missed
car, the gate will automatically
open.
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16. THANK YOU
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17. Supervisor :
1. Mr. Muhammad Arman
2. Mr. Eddy Erham
3. Mr. Ismail Welid
4. Mr.Nur Hakim
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