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Automated Car Parking System
Automated car parking machines that accept only cash and able to calculate duration and payment according to the desired rate , the system that charge money per hour and the hour is simulated as a second in the simulation for convenient . The system is able to calculate and deliver balance if inserted notes exceeded the required amount.

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Proximity sensor
This application will allow the user to detect the proximity of an object and it will gives out warning such as light or sound when the distance is less than the distance programmed in the ardruino.

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Distance Sensor Alert
This application system will detect distance of users to other people in their surrounding. Different distance will give different colour of RGB Led. The closer the other people to user, the high the RGB Led light. It can alert the users if someone were approaching the users.

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Ultrasonic sensor alarm with Arduino
The HC-SRO4 ultrasonic sensor will be the input and the triggering device. If there is an obstacle in front of the sensor it will immediately send the data to the Arduino board and then will activate the piezoelectric buzzer to sound its alarm to notify the user that there is an obstacle. This project can be used for vehicles, especially the big trucks.

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Water level system was designed by implement a few components such as ultrasonic sensor, motor and buzzer. This system actually suitable to apply in agro industries like farming and agricultures which may need the water tank system. Plus, this system will help to refill the huge water tank without using the manpower. Thus, this system works when the ultrasonic sensor detect the water level in the tank. When the water level was low, the system will generate the motor to pump the water until reach the maximum value. After that, the system will sound the buzzer and stop the motor from rotating when the sensor detect the water level at its highest.

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This simulation is designed to detect smoke around its area. The gas sensor is created to provide safety to humans. Due to that,  we generally find out that the gas sensor is always installed at the building like the school or housing area. Hence, I will explain how the gas sensor work. Firstly, the gas Sensor is input, and Piezo is output.  When the gas sensor detects the gas, an electrical signal will be sent to the Piezo and cause it to ring.

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This project uses an ultrasonic sensor to "sense" if the door opens or closes at certain distance. When door is in the path/range of ultrasonic sensor, microcontroller detects the distance from the sensor and if it is in the defined range, it sends the high signal to the buzzer and buzzer starts beeping.

Input – Ultrasonic Distance
Sensor
Output – Piezo

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This simulation was designed to unlock any device with a password protected keypad. The code from this program allows keypad values to be stored to generate password that will rotate the servo. The servo represents a lock on a password protected door or safe.

Input: Keypad
Output: Micro servo

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A temperature sensor is an electronic device that measures the temperature of its environment and converts the input data into electronic data to record, monitor, or signal temperature changes.

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Electronic device that measures the distance to a target object by emitting ultrasonic waves and converts the reflected sound into an electrical signal. Ultrasonic waves travel faster than the speed of audible sounds.

Input: Proximity Sensor
output: LED

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74185                                 Social distancing indicator and Alarming system                                                     

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74185                                 Social distancing indicator and Alarming system                                                     

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Social distancing indicator which  is a device to detect the people come near to us. That's why it provide with alarm system to make a warning sound to the people who are coming near to us. This will indicate our safety purpose from people surrounding.

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Ultrasonic sound or infrared light sensor is used to detect the motion in a range of distance. Any motion detected by the sensor within a certain range will reflect back to the PCB (Arduino UNO) to turn on the lights. If there is no motion detected within a certain time, the light will be turn off. Another component can be used is photo resistor which turn on the light when night and turn off during the day.

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- The Sensor is automaticly turn on when the no light around it.
It will become more bright when have any movement across the led sensor.

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Blinking led (warning light system)-(74324)

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Blinking led (warning light system)-(74324)

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-To tell the people don't go to that place by activating  the light
-use bright light so people can see from afar
-as a warning.

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74196                                Smoke detector system 

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74196                                Smoke detector system 

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- Photoelectric smoke detectors are designed to sense smoke by utilizing these effects of smoke on light.

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Ultrasonic sensor to distance alarm
- The system will detect the distance of the object, if the object is at the level that has been set on the system then the alarm will produce a sound indicating that the object is at the distance that has been set.

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Blink an LED
This LED is connected to a digital pin and its number may vary from board type to board type. Connect the long leg of the LED to the other end of the resistor. Connect the short leg of the LED to the GND. In the diagram below we show a UNO board that has D13 as the LED_BUILTIN value. The value of the resistor in series with the LED may be of a different value than 220 ohms; the LED will lit up also with values up to 1000 ohm.

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Automatic Light Sensor
PIR sensor as input and LED light as output. When there is someone walking past the area of PIR sensor detection, heat motion will be detected. An electrical signal will be sent to the LED and cause it to light up.

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Vibration motor with Arduino
The vibration motor is a compact DC motor used to receive a signal through vibration to notify the user, and there is no sound. In Tinkercad, it requires more power than the Arduino pins can provide, so a transistor is needed to turn the motor current on and off to make the motor vibrate. The vibration motor is provided by the Arduino power supply, and the output will be the vibration motor. It has very useful practical applications and can be used for many purposes.

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Password Door Lock  Using Arduino Design this password door lock using arduino is because need to secure a room at our home or office so that no one can access to the room without the password. The component will use in this project is arduino uno, the lcd size 16x2, 4x4 keypad for arduino, servo motor, 3d printed door locker power supply of 1 Amp 5 Volt mobile charger, 4’’’plastics boxes, jumper wires, nuts bolts, plastic casing and buzzer. The door will open for 10 second if you are enter the correct password and also you can manually lock the door if you don’t want wait for 10 second, if entered the wrong password more than 5 times the door lock will alert.

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Arduino as walker for people with impaired vision

By using Arduino modules such as, speaker, ultrasonic sensor and even servo motors, a product such as a cane for target user (people with impaired vision) can be achieved.
This can be further explained by stating out each sensor's purpose. Firstly, being at the most distal part of the cane, the ultrasonic acts as a proximity sensor to calculate the distance between user and objects. Secondly, the speaker then triggers sound when an object is too close to user. This ensures the user is in a safe position. Servo motors can also act as vibration if the user is in a crowded position where the speaker cannot be heard well.

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Car security sensor with Arduino
Arduino-controlled relay in parallel to the horn switch on the steering wheel. The negative wire from horn would be into relay then coming out would be a wire connecting the relay would turn on. The horn is connected to the ground while the circuit closes, the horn could go off.

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Arduino Traffic Light System

Use the green, red and yellow LED to simulate the traffic light system. Every light is setup to be delay before it turns to another light. Example, when red light turns to green light, insert a timing code for yellow light to blink as a count down before the light changes. The green and red light can be set a 60s or 120s delay to replicate the process in real traffic light to control the traffic.

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Ultrasonic sensor
The automatic hand sanitizer is an example of ultrasonic sensor that measure the distance between an obstacles (hand) for it activates when the obstacles(hand) near to it.

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Blinking LED(s)

can use single unit of LED for simple blinking purpose or more than 2 to make fascinating light motion

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Traffic light with countdown timer using Arduino

Using 3 colour of LED represent traffic light and a count down timer to show the number. The time will be count down before the light turn to green or red. So, people will know when start to move the car or stop the car immediately. With that, it can prevent car accident.

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Motion Sensor Light
when the motion sensor detects movement, it can switch on for as long as there is motion. the range of motion of the sensor should be about 5 meter radius so they can turn on earlier and turn off a little later. this is very useful for lights at the stairs area to conserve more energy.

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Door Buzzer using Ultrasonic sensor. To create sounds based on a certain distance detected by the sensor. When an Object is at a certain distance, The Piezo will go off alarming, but when the object is far from the detectable range of the Sensor, the Piezo won't create any sound. The input for this is the Ultrasonic distance Sensor and for the Output, It is the Piezo

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Temperature Based Fan Speed Control using Arduino
The input is LM35 and it is a temperature sensor. The LM35 will detect the room temperature and send the signal to arduino. Then signal will send to LCD display and DC motor. LCD display will display the temperature value that detected by LM35 and the DC motor will rotate with different speed depend to the value of temperature that control by arduino. The output is DC motor and LCD display.

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LED with variable flashing timer

Can be used as traffic light which consist of 3 colours red,yellow and green. Set pin to high, set delay to desired time for each LED. set pin to low, set delay to desired time. This will create flashing light with custom timer and can be used as traffic light to control the traffic.

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Piezo Sound
using the piezo and the push button to produce a sound. Use Arduino Uno R3 board and the breadboard small. Attached the piezo to the breadboard with a resistor and connect it to the push button then connect the push button to the arduino uno R3.

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Automatic Light

Through the use of photoresistors, the lights can be turned on when the night comes and turned off when daylight shines.

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Gas Sensor
-To detect toxic or explosive gasses and measure gas concentration.
-To identify gas leaks and to detect smoke and carbon monoxide in homes.
For example, if there is leaking of gasses in a room, the sound of the buzzer will depends on the concentration of the gasses. The more concentrated the gasses are, the louder the buzzer sounds. The input for this application is the gas sensor, for the output will be the buzzer.

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Password Protected Security System

Using TinkerCAD to build a security system that contains a password set. It will give a green signal if and only if the correct password is entered. Otherwise, the alarm (buzzer) will go off to indicate that the password that was entered is wrong.

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Ultrasonic Distance Sensor in Arduino.
To detect the distance of the object by observing the number of LEDs that light up. For example, if the object is closer the number of LED that lighted up will increase while if the object is too far, none of the LED will light up. The input for this application will come from the ultrasonic distance sensor, while the output can be seen on the LED.

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Multiple LEDs With Speed Variable

Declare a variable with a desired value to be used as delay timer. Implement block of code to set:
>> pin x to HIGH
>> delay with Speed Variable
>> pin x to LOW
>> delay with Speed Variable
Then perform repetition with all the LEDs.

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Smoke Detection using Gas Sensor

This project can detect smoke including inflammable gas.
When the smoke reaches a certain level of the output voltage, the buzzer will activated and a red LED will turn on.

input: Gas sensor
output: LED & buzzer

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(Passive InfraRed) PIR Motion Sensor. it's configured to send a HIGH or LOW signal which can detect a movement. it detects infrared light levels . the sensor reports a LOW signal by default, reads the amount of ambient infrared light coming in, then HIGH signal is triggered for a certain period of time when the light levels change, means there's a movement.

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TMP36 Temperature Sensor with Arduino in TinkerCAD.
Using 3 similar LED, to categorize High, Medium and Low temperature. Using TMP36 as analog input to interpret human's skin temperature. TMP36 will create the change of voltage signal depending on the temperature that it senses. And then the LED will light up, if it sense High temperature, then all 3 of the LED will light up.

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The radar can detect the object and  transmits radio wave pulses that bounce off any object in its path. The object returns a portion of the wave received by the receiver which is in line of sight with the transmitter. When the object is too close with the radar system, there is the sound for warning.  This is useful in border of countries to detect the intruder especially in barracks to enhance our military strength.