Parking cars in garages can always be a challenge when you're in a hurry, or your new car or garage is just a bit too tight. Instead of resorting to the tennis ball and fishing line, Instructables user "Aptpupil" created a device based around an Arduino circuit and an ultrasonic distance sensor. It measures the distance between the vehicle and the wall, and uses a range of LEDs to display the progress to the driver from the garage wall.
If you're making your own permanent Arduino-based project such as the parking assistant mentioned above - and don't want to banish an entire board - instead get yourself an ATmega328 preloaded with the Arduino bootloader:
This is the same Atmel AVR ATmega328P microcontroller used in the official Arduino Uno, as well as our Eleven, EtherTen, USBDroid, and other boards. Perfect for building your own Arduino-compatible project directly on a breadboard or on a custom PCB, or for replacing the MCU in an existing board. For more information to order, click here.