This great sonar ranger from Devantech offers a wide range from 3cm to 3m. For further range see the SRF08. The SRF04 is interfaced using the one output line to ping the sensor and an input line to read the echo.
This is the SRF05 Ultrasonic ranger made by Devantech. The Ultrasonic detector can detect from ~4 inches to ~13 feet.
This is the SRF08 Ultrasonic ranger made by Devantech. The Ultrasonic detector can detect from ~4 inches to ~30 feet.
Can you imagine using Arduino's Shield on your Garagino? The Garagino Dock comes to solve this issue.
These heavy duty 6 inch (152mm) Stainless Steel mecanum wheels allow your robot to easily move laterally, diagonally, or spin in a circle. This set includes four wheels. These heavy duty wheels are rated for 150kg!