Adafruit 16-Channel Servo Driver smbus not defined
Moderators: adafruit_support_bill, adafruit

Forum rules
Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/

Adafruit 16-Channel Servo Driver smbus not defined

by nonlinearmind on Mon Dec 17, 2012 2:34 pm

I'm trying to get a Servo motor running using the tutorial.

I've changed the smbus settings for the RPi revision and keep getting the following error from line (30) that I changed in Adafruit_PWM_Servo_Driver.py

Code: Select all | TOGGLE FULL SIZE
self.i2c = Adafruit_I2C(address, bus=smbus.SMBus(1))
NameError: global name 'smbus' is not defined


What am I doing wrong??
nonlinearmind
 
Posts: 6
Joined: Fri Oct 26, 2012 10:07 am

Re: Adafruit 16-Channel Servo Driver smbus not defined

by adafruit_support_bill on Tue Dec 18, 2012 5:41 am

Did you install the smbus library?
http://learn.adafruit.com/adafruit-16-c ... it-library
Before you start, you'll need to have the python smbus library installed, run apt-get install python-smbus
User avatar
adafruit_support_bill
 
Posts: 29602
Joined: Sat Feb 07, 2009 9:11 am

Re: Adafruit 16-Channel Servo Driver smbus not defined

by nonlinearmind on Tue Dec 18, 2012 10:55 am

I had it installed. Here's what I get back when I run Servo_Example.py:

pi@raspberrypi ~/Adafruit-Raspberry-Pi-Python-Code/Adafruit_PWM_Servo_Driver $ sudo python Servo_Example.py
Traceback (most recent call last):
File "Servo_Example.py", line 12, in <module>
pwm = PWM(0x40, debug=True)
File "/home/pi/Adafruit-Raspberry-Pi-Python-Code/Adafruit_PWM_Servo_Driver/Adafruit_PWM_Servo_Driver.py", line 30, in __init__
self.i2c = Adafruit_I2C(address, bus=smbus.SMBus(1))
NameError: global name 'smbus' is not defined
nonlinearmind
 
Posts: 6
Joined: Fri Oct 26, 2012 10:07 am

Re: Adafruit 16-Channel Servo Driver smbus not defined

by adafruit on Mon Dec 24, 2012 12:29 pm

can you try again with a fresh copy of the git repository? we cant reproduce this...
User avatar
adafruit
 
Posts: 11680
Joined: Thu Apr 06, 2006 3:21 pm
Location: nyc