How to enable the block "Read Ultrasonic sensor trig pin/echo pin"


#1

I am a new user of mblock. And now I am trying to use my ultrasonic sensor on mt Arduino Uno board. However, I am not able to enable the block “Read Ultrasonic sensor trig pin/echo pin”.


#2

Hi WinnieLu,

This program block is only available in offline mode. Please pull the mode switch to upload mode refer to the picture below: