mBot enginge selectively shutting down

#1

Just got my (first!) mBot today; assembly was really easy and fun, and the parts all look reassuringly high-quality.

I have a weird engine problem, though: whenever I have switched to cruise mode and back, the right engine refuses to go forward from then on.

The consequences: No going forward possible anymore (since the right engine is off and the left goes forward, the result is a circle); going backwards works alright (since the right engine follows the “go backwards command” without problems); turning sort-of works (even if the right engine refuses to go forward, the fact that the left engine goes backwards will do the trick).

If I switch the robot off and on again, behavior returns to normal. If I switch on cruise mode and off again, the erratic behavior returns.

Any ideas/remedies would be greatly appreciated!

All the best,

Markus

#2

Hi Poessel,

Have you ever reset default program for the mBot.
Please reset refer to bellow steps have a try:
Step 1: Download the latest mBlock software (V3.3.0) in this link (the beta one is V3.3.0):
http://learn.makeblock.com/software/
Decompress the file after download and install mBock software on PC.
Step 2: Use the USB cable connect mBot to PC and turn on the mBot.

Step 3: Open mBlock v3.3.0, choose mBot under Board:

Step 4: Choose the correct Serial Port for mBot under Connect->Serial Port: (Here my mBot’s serial port is COM3, and you can check your mBot serial port under your computer’s Device Manager->Ports (COM&LPT))

Step 5: Go to Connect->Reset Default Program->mBot, wait until it says Upload Finish.

Note: Above Steps take windows PC for example, if your PC is Mac, you need pay attention to two points bellow

  1. Before reset default program, need install a driver for Mac, here is the link to download the driver:
    http://blog.sengotta.net/wp-content/uploads/2015/11/CH34x_Install.zip
  2. When choose Serial port under Connect->Serial Port, please choose /dev/tty.wchusbserial1410.

If still the same issue, please kindly take a video to show this issue and send it to mail: tec-support@makeblock.cc

#3

Thank you - will do what you suggest and report the outcome!

#4

OK, it worked - mBot is behaving normally now. Thanks!

#5