Attribute error: 'Adafruit_I2C' object has no attribute 'writeList'

Hi there,

I am using the motor bridge cape using BBB to run stepper motor. When I execute the test file,, I end up in the error “Attribute error: ‘Adafruit_I2C’ object has no attribute ‘writeList’”. Kindly help me in this issue.

Problem fixed. Thanks

1. install the adafruit_gpio

sudo apt-get update

sudo apt-get install build-essential python-pip python-dev python-smbus git

sudo pip install Adafruit-GPIO

2. install adafruit_bbio

sudo apt-get install build-essential python-dev python-pip -y

sudo pip install Adafruit_BBIO

3. change the as below

import Adafruit_GPIO.I2C as I2C

import Adafruit_BBIO.GPIO as GPIO

import time

Reset = “P9_23”

MotorBridge = I2C.Device(0x4b, 2)

GPIO.setup(Reset, GPIO.OUT)

4. Here is the output. I will update wiki soon.

debian@beaglebone:~/MotorBridgeCapeforBBG_BBB/tests$ python

Hello From MotorBridge

Hello From MotorBridge

Hello From MotorBridge


Seeed techsupport team


Hello Fellows and Ladies,

Is the new software, which is found on, for the Motor Bridge Cape ( used w/ only Python3 now?