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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Object tracking with NXT Cam V4 for LEGO Mindstorms","articleBody":"Hello,\r\n\r\nI am trying to program an object tracking robot with lego mindstorms using the python language. However I am not able to communicate with the NXT cam.\r\n```python\r\n#!/usr/bin/env pybricks-micropython\r\nfrom pybricks.hubs import EV3Brick\r\nfrom pybricks.ev3devices import (Motor, TouchSensor, ColorSensor,\r\n                                 InfraredSensor, UltrasonicSensor, GyroSensor)\r\nfrom pybricks.parameters import Port, Stop, Direction, Button, Color\r\nfrom pybricks.tools import wait, StopWatch, DataLog\r\nfrom pybricks.robotics import DriveBase\r\nfrom pybricks.media.ev3dev import SoundFile, ImageFile\r\n\r\n\r\n# This program requires LEGO EV3 MicroPython v2.0 or higher.\r\n# Click \"Open user guide\" on the EV3 extension tab for more information.\r\n\r\n\r\n# Create your objects here.\r\nev3 = EV3Brick()\r\n\r\n\r\n# Write your program here.\r\nev3.speaker.beep()\r\n\r\nimport ev3dev2\r\nfrom ev3dev2 import sensor\r\nfrom ev3dev2.sensor import lego\r\nfrom ev3dev2.sensor.lego import I2C\r\n\r\n# Set up the I2C port on the EV3 for communication with the NXTCam-v4\r\ni2c_port = ev3dev2.get_current_i2c_bus()\r\ni2c_address = 0x01 # NXTCam-v4 I2C address\r\ni2c_sensor = lego.I2C(i2c_port, i2c_address)\r\n\r\n# Turn on the camera\r\ni2c_sensor.mode = lego.I2C.MODE_RAW # Set I2C mode to RAW\r\ni2c_sensor.write(0x01, 0x00) # Write 0x00 to register 0x01 to turn on the camera\r\n\r\n# Read data from the camera\r\nwhile True:\r\n    i2c_sensor.write(0x00, 0x00) # Write 0x00 to register 0x00 to trigger a new frame\r\n    data = i2c_sensor.read(8, lego.I2C.REPEAT) # Read 8 bytes of data from the camera\r\n    # Process the data as needed\r\n```\r\nI tried this code but it keeps bringing up the error : no module named 'ev3dev2'\r\n\r\n\r\n","author":{"url":"https://github.com/gara-3004","@type":"Person","name":"gara-3004"},"datePublished":"2023-04-03T16:43:09.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":8},"url":"https://github.com/792/ev3dev-lang-python/issues/792"}