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Freenove / Freenove_4WD_Smart_Car_Kit_for_Raspberry_Pi

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python test.py Motor #26

Open tyjtyj opened 2 years ago

tyjtyj commented 2 years ago

The whole system lost power when turn left/right

I tested with different battery and they are panasonic NCR. 

The photoresistor voltage on the left is 1.57V
The photoresistor voltage on the right is 1.6V
The battery voltage is 8.16V
pi@raspberrypi:~/Freenove_4WD_Smart_Car_Kit_for_Raspberry_Pi/Code/Server $ sudo python test.py Motor
Program is starting ...
The car is moving forward
The car is going backwards
The car is turning left

Each time turn left it die. Even I remove the 2 connector to the motor

MallocArray commented 2 years ago

Sometimes the batteries are only just connecting and when the robot turns, it shakes the entire body enough to slightly disconnect it. Try pushing on your batteries to ensure they are firmly connected to the metal pads, like you are the spring pushing it a bit more forward.

tyjtyj commented 2 years ago

So i managed to test further by powering pi using powerbank.

With 2 motor the test always passed. (This tested with removing one by one motor each time to rule out it is not single motor issue. more to controller issue) with 3 motor the test sometime pass left and stop at right. with 4 motor 100% wont pass left.

The car able to move forward with 4 wheel moving. Reverse is working fine. This give me believe there is hardware failure on over on turning. ?

Add some note: When it failed, the whole system wont power on. nothing responsive until I disconnect the battery. Short circuit ? I just learn Panasonic NCR cut off at 6.5A. So this need more that 6.5A as per battery requirement. I order another 20A LG HG2 What is the power range acceptable for the board to run from power supply to test. It hard to find 7v or 8v adapter