Hello community.
After the assembling Galaxy rover and connecting it to the Sunfounder Controller App I pushed the virtual triggers (left and right motors) on the App: left motors was not even started and after 5 seconds I heard and smelled the smoke and loud click from the Shield board (left motor driver I think)
Right motors was ok and alive! After I have disconnected right motor group and reconnected LEFT motors to the RIGHT pins - they still not worked.
And after this reconnection I put everything back like it must be and right motors (that was ok previously) became not working!!!
All motors from the box has short circuits for + and - contacts is it normal?
I bought another Galaxy RVR but I’m scared to start assembling due to the motors gap!
Let me summarize your problem.
At first, the left motor does not work and the left motor driver chip is burned, but the right motor works fine.
Then you connect the left motor to the right motor driver, and the left motor does not work either.
Finally you restore and connect the right motor back to the right motor driver, and the right motor does not work either.
If this is the case, it may be the left motor that is faulty.
Are the + and - contacts of all the motors in the box shorted?
It is recommended that you take a clear picture of the problem motor and show it to us.
I just bought another Galaxy RVR (new one) and the + and - contacts of all the motors in the box shorted also (I only open the box and checked the contact, so motors was not used before)
Judging from the pictures you provided, it is normal.
The 104 capacitor is connected in parallel at both ends of the DC motor for filtering and noise suppression.
The motor is similar to a short circuit in a static state because the motor is full of coil windings.
The two ends of the 5V DC motor are short-circuited in a static state because of the low resistance characteristics of the armature winding, but this does not affect the normal operation of the motor.
We will arrange to reissue the expansion board and motor to you.
Judging from the pictures you provided, it is normal.
The 104 capacitor is connected in parallel at both ends of the DC motor for filtering and noise suppression.
The motor is similar to a short circuit in a static state because the motor is full of coil windings.
The two ends of the 5V DC motor are short-circuited in a static state because of the low resistance characteristics of the armature winding, but this does not affect the normal operation of the motor.
We will arrange to reissue the expansion board and motor to you.
Hello and warm regards.
Thank you so much for the expansion board - I have received it! Amazing that you did it and sent it to me - very very appreciate it
but the problem not disappear. The same issue - left motors are still not working. New board and same problem. Left motors are not moving.
I bought another Galaxy RVR just to figure out that it was my mistake or hardware problem and there is no problems at all - superb robot, everything working great. So I connected everything right.
I think that it’s a motor (or motors) I don’t know how to check it or investigate which one is bad (but I know that if I will connect left motors to the right side - it will damage the right driver too)
At this moment right 3 motors are moving great.
