BigTrak Reborn

BigTrak reborn, driving it outdoors!

Two components to this project

• User interface, the iPhone/iPodTouch/iPad and Spectrum Analyzer Shield

• Drive train interface, Arduino Uno and the RC car

1 – User interface

We want to use the Spectrum Analyzer Shield to process Audio signal that’sgenerated from the RealSmartz App. First obtain a male to male AUX cable. Plugone end to the input jack of the shield and the other to the Apple device. Forthe newer Apple device you need to obtain an extension cable. Next, launchthe RealSmartz App.

2 – Drive train interface

Attach the Spectrum Analyzer Shield to the Arduino Uno and pwm pin 3 to Servoand 5 to ESC of the RC car. First make sure the pins line up correctly betweenthe Spectrum Analyzer Shield and Arduino Uno. Push down with slight pressure and thetwo parts should fuse into one unit. Next, connect the power of the servo to v3and ground of the Arduino.

✅ Putting everything together

Upload and modify the driveTrainArduino/driveTrainArduino.ino to the Arduino and test everything out.The Servo and ESC value is specific to your RC car and may not be the same.

Materials RealSmartz running on Apple device [iPhone, iPad, iPod touch]:

• https://itunes.apple.com/us/app/real-smartz/id1384290599?ls=1&mt=8

Spectrum Analyzer Shield:

• https://www.sparkfun.com/products/13116

• https://www.ebay.com/itm/Arduino-Uno-Compatible-Dual-MSGEQ7-Spectrum-Analyzer-Breakout-Board-Shield/322619787678

Arduino Uno drive train program

• https://github.com/DownloadTheBearCompany/BigTrakReborn/blob/master/driveTrainArduino/driveTrainArduino.ino

RC Car, convert the RC car to the point it’s drivable with the Arduino

• https://www.sparkfun.com/tutorials/348

• http://www.instructables.com/id/RC-Car-to-Robot/

• http://www.instructables.com/id/How-to-convert-almost-any-27-or-49-MHz-RC-Car-in/

• More: https://www.google.com/search?q=convert+rc+car+arduino&oq=convert+rc+car+arduino

• Male to male AUX(2.5 Audio) cable

• Arduino Uno: https://store.arduino.cc/usa/arduino-uno-smd-rev3

Test it out on the field

Added a few GPS instructions on RealSmartz App. The RC car should be able to drive towards the GPS way points. If your RC car is behaving incorrectly. Give your iPhone a call. It will stop the car in its track.