fxprime

### ekf config file ###
ekf_filter_node:
    ros__parameters:
# The frequency, in Hz, at which the filter will output a position estimate. Note that the filter will not begin
# computation until it receives at least one message from one of the inputs. It will then run continuously at the
# frequency specified here, regardless of whether it receives more measurements. Defaults to 30 if unspecified.
        frequency: 25.0

# The period, in seconds, after which we consider a sensor to have timed out. In this event, we carry out a predict
# cycle on the EKF without correcting it. This parameter can be thought of as the minimum frequency with which the

fxprime

import launch
from launch_ros.actions import ComposableNodeContainer, Node
from launch_ros.descriptions import ComposableNode


def generate_launch_description():
    """Launch file which brings up visual slam node configured."""
 

fxprime

#include <i2cmaster.h>

#define uint16_t unsigned int
typedef struct
{
  uint16_t Red;
  uint16_t Green;
  uint16_t Blue;
  uint16_t Clear;
} RGB;

fxprime

#!/usr/bin/env python

import sys
import rospy
import rosbag
import cv2
from sensor_msgs.msg import Image
from cv_bridge import CvBridge, CvBridgeError

def save_images_from_rosbag(rosbag_file, topic_name, output_file):

fxprime

import cv2
#assert cv2.__version__[0] == '3', 'The fisheye module requires opencv version >= 3.0.0'
import numpy as np
import os
import glob
CHECKERBOARD = (7,10)
subpix_criteria = (cv2.TERM_CRITERIA_EPS+cv2.TERM_CRITERIA_MAX_ITER, 30, 0.1)
calibration_flags = cv2.fisheye.CALIB_RECOMPUTE_EXTRINSIC+cv2.fisheye.CALIB_CHECK_COND+cv2.fisheye.CALIB_FIX_SKEW
# calibration_flags = cv2.fisheye.CALIB_RECOMPUTE_EXTRINSIC+cv2.fisheye.CALIB_FIX_SKEW
objp = np.zeros((1, CHECKERBOARD[0]*CHECKERBOARD[1], 3), np.float32)

fxprime

#!/usr/bin/env python
# -*- coding: utf-8 -*-

# Copyright 2016 Massachusetts Institute of Technology

"""Extract images from a rosbag.
"""

import os
import argparse

fxprime

/**
 * 
 */
const int dirPin = 8;
const int stepPin = 9;
const int enablePin = 7;
const int sw = 6;

const int delayMicros = 500;  //Delay between each step
const int maximumSteps = 230; 

fxprime

#include <AccelStepper.h>

const int StepPin = 9;
const int DirPin = 8;
const int EnablePin = 7;


AccelStepper stepper(AccelStepper::DRIVER, StepPin, DirPin, 0, 0, true);

fxprime

const int dirPin = 8;
const int stepPin = 9;
const int enablePin = 7;

void setup() {
  pinMode(enablePin, OUTPUT);
  pinMode(stepPin, OUTPUT);
  pinMode(dirPin, OUTPUT);

  digitalWrite(enablePin, LOW);

fxprime

/**
ตัวอย่างการใช้ PS2 Wireless กับ Arduino
PS2X_lib
ในการอ่านค่า joy PS2 ของร้าน Modulemore
โดยต่อ
UNO R3 --- > PS2 adapter
GND   -    GND
5v    -    VCC
D3    -    DAT
D4    -    CMD