plusangel

#ifndef INVOICE_H_
#define INVOICE_H_

#include <chrono>
#include <memory>
#include <ostream>
#include <string>
#include <vector>

#include "Customer.h"

plusangel

# ROS1
export ROS_DISTRO=melodic
source /opt/ros/$ROS_DISTRO/setup.bash
source /home/user/catkin_ws/devel/setup.bash

# ROS2
export ROS_DISTRO=crystal
source /opt/ros/$ROS_DISTRO/setup.bash
source /home/user/ros2_ws/install/local_setup.bash

plusangel

I have setup Ad-Hoc mode on my Pi3.

This involves modification to network configuration file /etc/network/interfaces so you should first make a backup e.g. sudo cp /etc/network/interfaces /etc/network/interfaces.orig.

Replace the interfaces file with the following:-

# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

plusangel

How to install packages from github

git clone -b <branch> <address>
e.g.  git clone -b hydro-devel https://github.com/ros/common_msgs.git

What python version I ahve installed?
pkg-config --modversion opencv

How to view a camera topic on ROS?
rosrun image_view image_view image:=/usb_cam/image_rect

plusangel

# To load the mnist data
from keras.datasets import fashion_mnist
from tensorflow.keras.models import Sequential

# importing various types of hidden layers
from tensorflow.keras.layers import Conv2D, MaxPooling2D,\
Dense, Flatten, Softmax

from tensorflow.keras.optimizers import Adam
from tensorflow.keras.losses import SparseCategoricalCrossentropy

plusangel

LSTM for Predictive Maintenance on Pump Sensor Data - link

Time series analysis to explain the thought process in a predictive maintenance case -- almost done--

Time Series Anomaly Detection with PyFBAD - link

An End-to-End Unsupervised Outlier Detection

Time Series Forecasting With Prophet in Python - link

The Prophet library is an open-source library designed for making forecasts for univariate time series datasets and another example here

plusangel

Let's say that we are in rPi4 we have installed ROS noetic following this guide and we want to add a couple of new packages. In our case we have selected ros_comm package. Imagine that we want to add teleop_twist_keyboard.

cd ros_catkin_ws/
source devel_isolated/setup.bash
rosinstall_generator ros_comm teleop_twist_keyboard --rosdistro noetic --deps --wet-only --tar > noetic-custom_ros.rosinstall
wstool merge -t src noetic-custom_ros.rosinstall
wstool update -t src
rosdep install -y --from-paths src --ignore-src --rosdistro noetic -r --os=debian:buster
sudo ./src/catkin/bin/catkin_make_isolated --install -DCMAKE_BUILD_TYPE=Release --install-space /opt/ros/noetic

plusangel

cmake_minimum_required(VERSION 3.0.0)
project(raii_examples VERSION 0.1.0)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

add_executable(raii_2 raii_2.cpp)

plusangel

cmake_minimum_required(VERSION 3.0.0)
project(raii_examples VERSION 0.1.0)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

add_executable(raii_1 raii_1.cpp)

plusangel

import sys
from time import sleep

from PySide2.QtCore import Qt, QObject, QThread, Signal, Slot
from PySide2.QtWidgets import (
    QApplication,
    QLabel,
    QMainWindow,
    QPushButton,
    QVBoxLayout,