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Offered by Autodesk, Tinkercad is a free online platform you can use to build and test out your Arduino circuits ... button, ultrasonic sensor, keypad), output (e.g., LED, DC motor, LCD), power ...
Inside [Klaus]’ device is an Arduino Uno, an HC-SR04 ultrasonic distance sensor, and an Adafruit Wave Shield. Originally, this parking/distance sensor used a small TFT to display the distance to ...