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sunfounder / Sunfounder_Smart_Video_Car_Kit_for_RaspberryPi

Sunfounder Smart Video Car Kit for Raspberry Pi

Home Page:http://www.sunfounder.com

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Cali Server Error

mauriziotallarico opened this issue · comments

commented

Hello could you please help ion this error ?
I'm using GIT latest repo cloned and RPI3
thanks !

Traceback (most recent call last):
  File "cali_server.py", line 174, in <module>
    setup()
  File "cali_server.py", line 45, in setup
    video_dir.setup()
  File "/home/pi/Sunfounder_Smart_Video_Car_Kit_for_RaspberryPi/server/video_dir.py", line 31, in setup
    pwm = servo.PWM()           # Initialize the servo controller.
  File "/home/pi/Sunfounder_Smart_Video_Car_Kit_for_RaspberryPi/server/PCA9685.py", line 95, in __init__
    self.write_all_value(0, 0)
  File "/home/pi/Sunfounder_Smart_Video_Car_Kit_for_RaspberryPi/server/PCA9685.py", line 174, in write_all_value
    self._write_byte_data(self._ALL_LED_ON_L, on & 0xFF)
  File "/home/pi/Sunfounder_Smart_Video_Car_Kit_for_RaspberryPi/server/PCA9685.py", line 113, in _write_byte_data
    if not self._check_i2c():
  File "/home/pi/Sunfounder_Smart_Video_Car_Kit_for_RaspberryPi/server/PCA9685.py", line 130, in _check_i2c
    status, output = commans.getstatusoutput(cmd)
NameError: global name 'commans' is not defined
commented

Hello, problem solved , i think there is a typo in PCA9685.py : there is a "commans" instead of "commands".
Problem solved, i think you might want to fix the typo :)

commented

Thank you, We have already fix the problem in the newest commit, you can try pull from master again.

commented

@sunfounder Hey we cloned the repo today and ran into trouble when trying to start the cali_server.py.

$ sudo python cali_server.py
offset_x = 11
offset_y = 0
offset = 0
turning0 = True
turning1 = True
Traceback (most recent call last):
  File "cali_server.py", line 174, in <module>
    setup()
  File "cali_server.py", line 45, in setup
    video_dir.setup()
  File "/home/pi/Sunfounder_Smart_Video_Car_Kit_for_RaspberryPi/server/video_dir.py", line 31, in setup
    pwm = servo.PWM()           # Initialize the servo controller.
  File "/home/pi/Sunfounder_Smart_Video_Car_Kit_for_RaspberryPi/server/PCA9685.py", line 113, in __init__
    self.bus = smbus.SMBus(self.bus_number)
IOError: [Errno 2] No such file or directory

I read a bit through #3 and accordingly ran:

$ i2cdetect -y 1
Error: Could not open file `/dev/i2c-1' or `/dev/i2c/1': No such file or directory

We are using a Raspberry Pi B+ using the latest Raspbian Lite image and we are connecting over SSH.

commented

Hello , i believe i had a similar problem. In my case it was due to the fact that i was powering the Rpi via a different source and not from the batteries of the robot kit. It's mentioned in start page from Git : " Hardware problem:
If you are using a DC adapter for your Raspberry Pi, you need to connect the GND between Servo Controller and Raspberry Pi. Because they are common-grounded by the micro USB, and if you use a DC adapter, you have to make another wire for common-ground."

commented

@mauriziotallarico Thanks for your fast reply.

We power the Pi using the USB of the DC-DC converter which is powered by the kit's batteries.
We connected the Pi's Ground with the Servo Controller (as it was part of the booklet; GPIO6).

commented

Hello, silly question: i suppose You've enable I2C right ? You can do this by raspi-config

commented

@mauriziotallarico Oh god, I guess silly questions are good ones. Somehow we forgot this.
Thanks a lot!

commented

I am getting the same error
I checked all the wiring (i followed the instruction on youtube and the notebook that came with robot)
i am using the batteries
i enabled I2C via raspi-config
and i still get the same error

pi@raspberrypi:~/Sunfounder_Smart_Video_Car_Kit_for_RaspberryPi/server $ lsmod | grep i2c
i2c_bcm2708 4920 0
i2c_dev 5671 0

pi@raspberrypi:~/Sunfounder_Smart_Video_Car_Kit_for_RaspberryPi/server $ sudo python cali_server.py
offset_x = 11
offset_y = 0
offset = 0
turning0 = True
turning1 = True
Traceback (most recent call last):
File "cali_server.py", line 176, in
setup()
File "cali_server.py", line 47, in setup
video_dir.setup(busnum=busnum)
File "/home/pi/Sunfounder_Smart_Video_Car_Kit_for_RaspberryPi/server/video_dir.py", line 34, in setup
pwm = servo.PWM(bus_number=busnum) # Initialize the servo controller.
File "/home/pi/Sunfounder_Smart_Video_Car_Kit_for_RaspberryPi/server/PCA9685.py", line 113, in init
self.bus = smbus.SMBus(self.bus_number)
IOError: [Errno 2] No such file or directory

commented

issue is fixed ... i had to restart my raspi after enabling the I2C !!!

commented

@mauriziotallarico you saved my life! thanks

commented

Hi All. I need Help. After install 2 X 18650 3,7 V, my Pi don't work, Red indicator don't light, green light, but not long. I cant start terminal PuTTy, because low energy for RaspberryPi, Maybe somebody know what kind problem?

commented