Arduino Car Handler

By Jerry Yan, April 2017

Hardware Look

Software Look

Downloads

You can download the release version here.

System Requirements

• macOS Sierra or later (10.12+)
• Bluetooth 2.1

A Glance

Connect with the Car

1. Pair the Arduino car with your Mac on Bluetooth.
2. Select your Bluetooth Serial Port on the "Port" in the menu bar.
3. Click "Connect", the status will change to "Connected" if it succeeds.

Operate the Car

You can operate the car with any of the following ways:

I. Use the Keyboard

You can use the arrow keys on the keyboard to operate the car. When the key's down, the car starts to move; when the key's up, the car ceases to move.

II. Use the Buttons on the Window

Just click on "Forward," "Left," "Right," "Backward," or "Stop" to operate the car.

Monitoring the Car

When the car is connected, the app will show the realtime distance in front of the car. The car also alerts when there's obstacle less than 25cm in front of it.

Get the Trace of the Car (Realtime)

Auto Recording

• Start: When the car is connected, start the Auto Recording to get the realtime trace of the car.
• **Pause: ** The trace recording will be paused, and you may click the start button to restart it. The previous trace will not be erased.
• Stop: The trace recording will be stopped, and you may click the start button to restart it. The previous trace will be erased.

Manual Input

Enter the JSON data like this, and then click the "try" button to stimulate the realtime trace recording.

{"a_x":"0.27", "a_y":"0.12", "a_z":"-10.04", "USDistance":"228"}
{"a_x":"0.31", "a_y":"0.08", "a_z":"-10.08", "USDistance":"36"}
{"a_x":"0.16", "a_y":"0.12", "a_z":"-10.08", "USDistance":"37"}
{"a_x":"0.16", "a_y":"0.04", "a_z":"-10.04", "USDistance":"38"}
{"a_x":"0.24", "a_y":"0.16", "a_z":"-10.12", "USDistance":"36"}
{"a_x":"0.27", "a_y":"0.04", "a_z":"-10.08", "USDistance":"36"}
{"a_x":"0.31", "a_y":"0.16", "a_z":"-10.08", "USDistance":"35"}
{"a_x":"0.31", "a_y":"0.08", "a_z":"-10.08", "USDistance":"36"}
{"a_x":"0.24", "a_y":"0.12", "a_z":"-10.04", "USDistance":"40"}

• a_x: the instantaneous acceleration on the x-Axis (in $m/s^2$)
• a_y: the instantaneous acceleration on the y-Axis (in $m/s^2$)
• a_z: the instantaneous acceleration on the z-Axis (in $m/s^2$)
• USDistance: the ultra-sonic distance in front of the car (in $cm$)

Reset Button

You may reset the image area anytime using the reset button.

Arduino Code

You can access the Arduino Code here.

Credit

SwiftyJSON

ORSSerialPort