Team Green

• Anila Durbha
• Gautham Krishna
• Marie Lee

Car Simulator

Project Description

This project was inspired by TESLA. Given the alarming price of TESLA cars, we aimed to design a low-budget prototype that could potentially be a competitor to Chevy or Ford. We designed a semi-truck-based car that could mimic the features of a modern-day car such as automatic lights, proximity alerts, blind spot detection, and temperature insights. This was designed using a Wio terminal, 5 external sensors, and 3 buttons. A detailed part list and working principle are listed in the upcoming sections.

Parts List

• Motion Sensor To detect the presence of an object while passing left.
• Circular LED To simulate front headlights.
• Ultrasound Ranger To measure the distance between your car and behind.
• Temperature and Humidity Sensor To simulate and measure the ambient and engine temperature.
• Digital Light Sensor To determine the outdoor light conditions.

Features

The project was developed with the following features:

• Simulate the start of the vehicle remotely.
• Turn on the light automatically by reading the light sensor value.
• Use the LED to simulate front headlights.
• Simulate High Beam and Low Beam.
• Provide an alert to the user if the Engine Temperature is high.
• Provide a proximity alert based on the car behind.
• Provide a blind spot audio alert while passing left.

---

Setup Instructions

• Step1: Connect the Circular LED to D2
• Step2: Connect the Ultrasonic Ranger to D4
• Step3: Connect the Digital Light Sensor to the I2C port on the Wio Terminal
• Step4: Connect the Temperature and Humidity Sensor to D6
• Step5: Connect the PIR Motion Sensor to D0
• Step6: Attach the Wio to the 3D Printed Truck

The below portrays the image representation for step-by-step connections:

Construction Video

ConstructionVideo_Compressed.mp4

Working Principle

Remote Start

• Pushsafer was used to send a command through Python to an iOS device that posed the question "Want to start your car?".
• If the user responded yes, a command was then sent to Wio which would simulate the start of a car engine.
• If no, the loop in Python would repeat after a set period that will ask the question again

The following images represent the screen from PushSafer.

Passing on the left

• When WIO_KEY_C is pressed, the motion sensor is enabled to check for blind spot objects.
• This is done to simulate the indicator camera in cars.
• If an object is identified, the WIO_BUZZER is set to provide audio feedback in addition to the alert that appears on the terminal

---

Rear end proximity detection

• The Ultrasonic Ranger is used to simulate rear end proximity detector.
• The ranger is set to run continuously and provides visual alerts on the terminal if the vehicle behind is close.
• If the vehicle behind is between 15 to 30m, the alert is issued as "CAR BEHIND", and when the vehicle is closer than that, the alert is issued as "ALERT!".

---

Automatic Lights

• This was designed based on the automatic headlights in cars.
• Based on the light value from the digital light sensor, the LED lights up.
• This is particularly true when it comes to low light values.
• On pressing down WIO_5S_PRESS button, the LED also simulates High and Low Beam.

---

Temperature

• The Temperature and Humidity Sensor serves two purposes.
• During the initial startup, it is used to measure "ambient temperature" and issues visual feedback.
• The feedback will include either "Beautiful Weather" or "Bad Weather, Drive Safe!" based on the temperature.
• While the vehicle is running, and when WIO_KEY_B is pressed, the same sensor is used to measure "engine temperature".
• Visual feedback is provided based on the temperature and the variation is also depicted through changes in colors - Blue for normal and Red for high temperatures.

---

Fitting with 3D printed Case

The below image shows various angles for the final fitted vehicle.

---

Working Video

The final prototype is as below:

FInal.mp4

The code can be found here