issue on deep_pi_car code

[hareshel]

INFO :2020-01-08 14:56:22,072: Creating a DeepPiCar...
DEBUG:2020-01-08 14:56:22,095: Set up camera
Traceback (most recent call last):
File "deep_pi_car.py", line 136, in
main()
File "deep_pi_car.py", line 129, in main
with DeepPiCar() as car:
File "deep_pi_car.py", line 28, in init
self.pan_servo = picar.Servo.Servo(1)
File "/usr/local/lib/python3.7/dist-packages/SunFounder_PiCar-1.0.1-py3.7.egg/picar/SunFounder_PCA9685/Servo.py", line 36, in init
self.pwm = PCA9685.PWM(bus_number=bus_number, address=address)
File "/usr/local/lib/python3.7/dist-packages/SunFounder_PiCar-1.0.1-py3.7.egg/picar/SunFounder_PCA9685/PCA9685.py", line 47, in init
self.bus = smbus.SMBus(self.bus_number)
TypeError: an integer is required (got type NoneType)

[dctian]

Please double check your car's electrical connection and make sure batteries are freshly charged. Otherwise, you may get weird low level hardware errors. Hope this helps!

[knight3000]

Hello, thank you for this amazing walk through! I have the latest Pi 4 and i get the following error when running the deep_pi_car.py

pi@raspberrypi:~/DeepPiCar/driver/code $ python3 deep_pi_car.py
INFO :2020-03-29 11:05:49,178: Creating a DeepPiCar...
[Errno 121] Remote I/O error
Error. Pi revision didn't recognize, module number: b03111
Exiting...

Do i need to edit the code somewhere to include the newer Pi 4 module?

[rb05751]

knight, did you ever figure out how to solve this? I'm have the same exact issue except without the [Errno 121] error. Kind of desperate for an answer!

[knight3000]

rb05751, yeah i got it to work!

You have to edit PCA9685.py
add this after line 49:
RPI_REVISION_4_MODULE_B = ["b03111"]

Then you need to add this after line 72:
elif pi_revision == '4 Module B':
return 1

Then add this after line 100:
elif line[11:-1] in self.RPI_REVISION_4_MODULE_B:
return '4 Module B'

If i remember correctly, that was the only place you had to edit. Hope it works for you.