lbussy

Shutdown Raspberry Pi with a Single Button

There are two methods:

1. Scripted Method
2. Boot Overlay Method (also below as "tl;dr")

tl;dr Version

Add the following to your /boot/config.txt and reboot:

ExtremeGTX

Introduction

This tutorial for setting up Ubuntu Server (RPi 3B) as Wifi access point

Overview:

The main steps can be listed as following:

1. Install required packages
2. Setup hostapd
3. Setup DNSmasq
4. Configure AP IP Address

dronir

# This converts a BOM file in CSV format, produced by KiCad Pcbnew,
# by selecting File / Fabrication Outputs / BOM File
# into the format expected by the JLCPCB manufacture service.
# At least in KiCad 5.1.4 the CSV output seems a bit broken in terms of column names,
# which is reflected in this code. If it changes in later KiCad versions, this script
# needs to change, too.

# Use this by running the command line: python convert_bom.py inputfile.csv outputfile.csv
# It will overwrite your output file without asking so be careful.

EliaCereda

//
//  NSImage+Python.swift
//
//  Created by Elia Cereda on 03/06/2019.
//  Copyright © 2019 Elia Cereda.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

stevecheckoway

Installation on Ubuntu 18.04.2 LTS

1. Install the jdk.

   $ sudo apt update
   $ sudo apt install default-jdk
   

2. Create a new user.

westphallm1

Raspberry Pi Ubuntu Spinnaker SDK Setup

These steps describe using an Ubuntu desktop environment to install Ubuntu and the Spinnaker Python interface on a Raspberry Pi 3 B+. Commands to be run on the desktop are prefaced with (desktop)$, and commands to be run on the Raspberry Pi are prefaced with (pi)$

1. Flash the latest Ubuntu image (at the time of writing: 18.04) to an SD card and perform first-time setup by following these instructions. You will need an HDMI cable, a monitor, and a keyboard. The Raspberry Pi must also be connected to your local network via Ethernet.

iwalpola

STM32duino GPIO Registers and programming

Sources:

http://embedded-lab.com/blog/stm32-gpio-ports-insights/
http://hertaville.com/stm32f0-gpio-tutorial-part-1.html

The libmaple libraries, on which STM32duino is based, provides access to registers by the syntax:

GPIOA->regs->REG

xcompass

// ==UserScript==
// @name         Questrade Updater
// @namespace    http://tampermonkey.net/
// @version      0.4
// @description  Auto refresh Questrade trading UI
// @author       Pan Luo
// @match        https://my.questrade.com/Trading/*
// @updateURL    https://gist.githubusercontent.com/xcompass/697fd581e5c39b5e6c54/raw/questrade_updater.js
// @grant        none
// ==/UserScript==

gbaman

Raspberry Pi Zero OTG Mode

Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).

The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int

andyyou

 btn Button           chk CheckBox                ckl CheckedListBox 
 cmb ComboBox         dtp DateTimePicker          lbl Label 
 llb LinkLabel        lst ListBox                 lvw ListView 
 mtx MaskedTextBox    cdr MonthCalendar           icn NotifyIcon 
 nud NumeircUpDown    pic PictureBox              prg ProgressBar 
 rdo RadioButton      rtx RichTextBox             txt TextBox 
 tip ToolTip          tvw TreeView                wbs WebBrowser 

容器
 flp FlowLayoutPanel    grp GroupBox               pnl Panel