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Reversed Servo for the wheels

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Post time 2019-7-14 03:14:48 | Show all posts |Read mode
Hi,

In our PiCar-A set, I found that the wheels react at opposite directions when instructed and in auto mode as well.  The camera is working correctly.  How to change the code to only reverse the wheel part?

Thanks!
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Post time 2020-2-13 05:06:35 From the mobile phone | Show all posts
Ho, do You nave fix the bug? I have opposite directions in servo and in motor.
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Post time 2020-3-8 22:38:13 | Show all posts
I have the same problem, would appreciate a pointer.  In the directions it highlights to ensure that the motor installation is correctly orientated, but I see no markings indicating tthe motors are side specific.  This issue also prevents the object tracking from working correctly so it isn't just an issue with the GUI client.
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Post time 2020-3-10 00:20:50 | Show all posts
Posting what worked for me......Note that the pictures in the manual show the tops of the motors with a D shape, with the flat side against the chassis.  This allows for the correct motor orientation with the correct PIN connections, but is impossible to align as there is a protrusion on that side which prevents the motor from mounting flush.  Counter-intuitively, that orientation also exposes the motor wires to the wheels......

Mounting the motors with the flat of the D towards the exterior, allows flush mounting with the wires protected from the wheels, but reverses the movement directions (forward/back, right/left).  These can be corrected in the move.py file by swapping the 1/0 values to the opposite values from the stock code:

  1. left_forward  = 1
  2. left_backward = 0

  3. right_forward = 0
  4. right_backward= 1
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Post time 2021-2-7 14:56:41 | Show all posts
Please check if your circuit is correct? Is the motor reversed?
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Post time 2021-2-7 14:59:38 | Show all posts
1581533511 replied at 2020-2-13 05:06 AM
Ho, do You nave fix the bug? I have opposite directions in servo and in motor.

Please check if your circuit is correct? Is the motor reversed?
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Post time 2021-2-7 15:01:39 | Show all posts
1583678156 replied at 2020-3-8 10:38 PM
I have the same problem, would appreciate a pointer.  In the directions it highlights to ensure that ...

Please check if your circuit is correct? Is the motor reversed?
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Post time 2021-2-7 15:05:05 | Show all posts
1583678156 replied at 2020-3-10 12:20 AM
Posting what worked for me......Note that the pictures in the manual show the tops of the motors wit ...

correct
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Post time 2021-3-16 19:08:24 | Show all posts
I have this problem too, and have tried to revise the "move.py file but i get an "access denied" message and can not save the file, can you help me.
thanks
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Post time 2021-5-6 08:58:32 From the mobile phone | Show all posts
Had the same with RaspTank 2 motors. It depends where manufacturer has put the negative and positive on the motor. With my motors the + and - where opposite on connector then on hat board. Either change the pins in the connector, so they correspond with board, or change the default 0 to 1, or 1 to zero in move.py.
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