Case 1 - Detect the distance with the ultrasonic sensor

Part 1   Objective

• MegaPi x 1

• MegaPi RJ25 adapter x 1

• Ultrasonic sensor x 1

• RJ25 cable x 1

• USB cable (Type-B) x 1

• Computer with network access x 1

Install the MegaPi RJ25 adapter on MegaPi, connect the ultrasonic sensor to MegaPi by using the RJ25 cable, connect MegaPi to the computer by using the USB cable, open mBlock 5 (PC client or web version), click +add, select Ultimate 2.0 from the Device Library, click Connect, and select the Live mode.

Update the firmware of Ultimate 2.0.

Part 3   Programming

In Live mode, after you select the check box on the left of the ultrasonic sensor port 6 distance (cm) block, the stage displays the distance detected by the ultrasonic sensor in real time.

Part 4   Practice

Change the distance output value by changing the distance between the ultrasonic sensor and the obstacle. The distance is detected and displayed on mBlock 5.