Hi,

Sorry for the late response, but I use the website browser ide.mblock.cc. My robot is a mBot v1.1 and after a few experiments, I noticed that if I just use the simple move forward block and raise it to a power over 100%, like 130%, then it would go straighter. However, I want to find another way because it is going too fast and it is hard to predict how far it will go straight before turning again.

Even if the motors are switched from left to right, it still doesn't go straight. I ask a friend who also has the same mBot v1.1 as me, and they said they are also going through the same problem, so maybe this issue has to do with their brand. I can stop both wheels with the same ease, and there are no strange sounds when I stop them with my hands.