patrickelectric

ROS

Long and love-rate (more rate than love) relationship, take mostly of this review with a grant of salt.

Well documented

Well distributed

Great tools, libraries and projects

ROS (started in 2010) have some great tools visualize topics, send and debug messages, check frequencies, and much more. It's also possible to use more advanced tools and solutions like: rviz, gmapping, rtabmap, stereo_image_proc and the list goes on. With ROS, it's possible to take advantage of all drivers that exist for different pieces of hardware. Keep in mind that this is possible, but not easy, usually the drivers need specific configuration, custom settings and may give as output really complex data that needs to be processed or analyzed by another program.

Bureaucratic

ROS uses [catkin](https://github.com

Paraphraser

Checking your Raspberry Pi's view of its power supply

Sometimes it seems like the first (and sometimes only) advice you get offered for almost any problem with a Raspberry Pi is "check your power supply". You think something like:

"hey, I'm using an official power supply sold as being matched with my Pi so how can there be any problem?"

You look up the specs then stick a controlled load across your supply and confirm that it can deliver the required number of Watts.

Yet your problems persist…

denniskupec

(version 1)

# 4-layer, 1oz copper
(rule "Minimum Trace Width and Spacing (inner layer)"
	(constraint track_width (min 5mil))
	(constraint clearance (min 5mil))
	(layer inner)
	(condition "A.Type == 'track'"))

(rule "Minimum Trace Width and Spacing (outer layer)"

strfry

#!/bin/sh -e

# Dependencies
apt install -y v4l2loopback-dkms v4l2loopback-utils gstreamer1.0-plugins-good
apt install -y gstreamer1.0-plugins-bad # h264parse
apt install -y gstreamer1.0-libav # H.264 

# Reset module state
modprobe -r v4l2loopback
modprobe v4l2loopback

maxkostinevich

<!-- 
/*
 * Serverless contact form handler for Cloudflare Workers.
 * Emails are sent via Mailgun.
 *
 * Learn more at https://maxkostinevich.com/blog/serverless-contact-form
 * Live demo: https://codesandbox.io/s/serverless-contact-form-example-x0neb
 *
 * (c) Max Kostinevich / https://maxkostinevich.com
 */

patrickelectric

/**
 * @brief Helper struct to do a moving average
 *  Ref: https://en.wikipedia.org/wiki/Moving_average
 *
 * @tparam T
 */
template <typename T> struct MovingAverage {
    /**
     * @brief Update average
     *

jimmychu0807

use std::str;

fn main() {
  // -- FROM: vec of chars --
  let src1: Vec<char> = vec!['j','{','"','i','m','m','y','"','}'];
  // to String
  let string1: String = src1.iter().collect::<String>();
  // to str
  let str1: &str = &src1.iter().collect::<String>();
  // to vec of byte

bencholmes

function [Ac,Bc,Cc,Dc] = cascadeSSM(A,B,C,D)
% CASCADESSM    A function to cascade linear state-space matrices for the
% purpose of cascading filters etc.
%
% Author:  Ben Holmes
% Date:    2018/05/20
% License: GPL V3
%
% This function is derived from the answer
% https://math.stackexchange.com/questions/2201067/cascade-of-state-space-models-for-linear-systems

jameswpm

#!/bin/bash
#
# Minimalistic_Pomodoro_Timer
#
# Based on the SU answer found here: https://superuser.com/questions/224265/pomodoro-timer-for-linux/669811#669811
#
# Tested in Ubuntu 16.04 and Arch
pomodorotime () {
  notify-send "Time to Work" "Focus" -u normal -a 'Pomodoro' -i $HOME/Documentos/icon.png
  paplay /usr/share/sounds/freedesktop/stereo/window-attention.oga

patrickelectric

#Download ardusub image
wget https://s3.amazonaws.com/downloads.bluerobotics.com/Pi/stable/ardusub-raspbian.img.zip
unzip ardusub-raspbian.img.zip
#mount image as device
sudo kpartx -va 0.0.10.img
sudo mkdir -p /mnt/image
#mount device partition as folder
sudo mount /dev/mapper/loop0p2 image
#move qemu inside /usr/bin
sudo cp /usr/bin/qemu-arm-static image/usr/bin