Index

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Windows Such-Indizierung mit maximaler Geschwindigkeit
Can I force full speed to the indexing service of Windows?
Force Windows indexing to run faster

Arduino Timer

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TimerOne & TimerThree Libraries
github.com/PaulStoffregen/TimerOne, TimerOne Library with optimization and expanded hardware support
github.com/PaulStoffregen/TimerThree, TimerThree Library with optimization and expanded hardware support
playground.arduino.cc/Code/Timer1 (alt?!)

Timer, Counter und Interrupts

World of Timers

Ein Arduino weist nicht nur einen einzelnen Timer sondern mehrere Timer auf. Kein Wunder, sind Timer doch essenzielle Grundkomponenten für verschiedene Aufgaben eines Mikrocontrollers.

Timer 0 ( 8 Bit) Verwendet für Funktionen wie delay(), millis(), micros()
Timer 1 ( 16 Bit) Verwendet von der Servo-Bibliothek
Timer 2 ( 8 Bit) Verwendet von der Tone-Bibliothek
Timer 3 (16 Bit) Nur Mega
Timer 4 (16 Bit) Nur Mega
Timer 5 (16 Bit) Nur Mega

Die genannten Timer finden auch für die Umsetzung von “Pulse Width Modulation” Verwendung, wobei folgende Zuordnung herrscht.

Beim Arduino:

PWM Pins 5 und 6 kontrolliert durch Timer 0
PWM Pins 9 und 10 kontrolliert durch Timer 1
PWM Pins 3 und 11 kontrolliert durch Timer 2

Transistor / BJT / MOSFET

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Junction Field Effect Transistor (JFET)
Insulated Gate Field Effect Transistor (IGFET)

Niederspannungsnetz / Hausinstallation

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Niederspannungsnetz
TN-System
Außenleiter, L1
Neutralleiter, N
Schutzleiter, PE
PEN-Leiter

Essentials – Strom, die Grundlagen
Warum spricht man von Phase und Neutralleiter, wenn es sich doch um Wechselspannung handelt?

Arduino/AVR Atomic Instruction / Mutex / Semaphore

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Arduino\hardware\arduino\avr\cores\arduino\Arduino.h
sei()  ==> interrupts()
cli()  ==> noInterrupts()

oder über das Macro:

ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
{
  // Do some atomic operation inside here
}

avr-libc

avr/interrupt.h: Interrupts
util/atomic.h: Atomically and Non-Atomically Executed Code Blocks

Arduino

attachInterrupt()
noInterrupts()
interrupts()
ow to “Multithread” an Arduino (Protothreading Tutorial)

Portable

github.com/wizard97/SimplyAtomic: Simple Arduino portable atomic macros (Portable: AVR, ARM, ESP8266, ESP32)

learn.adafruit.com

Multi-tasking the Arduino – Part 1
Multi-tasking the Arduino – Part 2
Multi-tasking the Arduino – Part 3

Questions

Do interrupts interrupt other interrupts on Arduino?

occam-pi

occam-pi in a nutshell
occam (programming language), concurrent programming language that builds on the communicating sequential processes (CSP) process algebra
concurrency.cc – Parallel programming for the rest of us

EleksMaker EleksMill CNC-Mikrograviermaschine

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EleksMaker EleksMill CNC-Mikrograviermaschine ohne Lasermodul

Prototyping PCB using CNC Laser Engraver

EleksMaker Homepage
EleksMaker EleksMill Wiki (Assembly)
EleksMaker’s Products General Discussion

Leiterplatinen Fräsen mit CAM

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FlatCAM-8.5
Candle_1.1.7

FlatCAM: Free and Open-source PCB CAM
FlatCAM: 2D Computer-Aided PCB Manufacturing

github.com/pcb2gcode/pcb2gcode
github.com/pcb2gcode/pcb2gcodeGUI

github.com/Denvi/Candle

KiCAD Python Console

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cd /c/Users/bachman0/Documents/ZHAW_Module/PA/kicad/python/svg2mod
python svg2mod.py -i ../../images/PA17_bmat_6_V1.svg -o test1 --format pretty
Parsing SVG...
No handler for element {http://www.w3.org/2000/svg}defs
No handler for element {http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd}namedview
No handler for element {http://www.w3.org/2000/svg}metadata
transform: translate [0.0, -295.7]
transform: translate [-2.0552455, 280.43471]
Writing module file: test1.kicad_mod


sys.path.append('');
os.chdir('');

sys.argv = ['arg1', 'arg2']
execfile('');

subprocess.call(['./abc.py', arg1, arg2])

# 
execfile('C:\Users\bachman0\Documents\ZHAW_Module\PA\kicad\python\test1.py')
# Traceback (most recent call last):
#   File "<input>", line 1, in <module>
# IOError: [Errno 2] No such file or directory: 'C:\\Users\x08achman0\\Documents\\ZHAW_Module\\PA\\kicad\\python\test1.py'

execfile('C:Users/bachman0/Documents/ZHAW_Module/PA/kicad/python/test1.py')
# Traceback (most recent call last):
#   File "<input>", line 1, in <module>
# IOError: [Errno 2] No such file or directory: 'C:Users/bachman0/Documents/ZHAW_Module/PA/kicad/python/test1.py'

print sys.path
# ['C:\\Program Files\\KiCad\\lib\\python27.zip', 'C:\\Program Files\\KiCad\\lib\\python2.7', 'C:\\Program Files\\KiCad\\lib\\python2.7\\plat-win32', 'C:\\Program
# Files\\KiCad\\lib\\python2.7\\lib-tk', 'C:\\Program Files\\KiCad\\lib\\python2.7\\lib-old', 'C:\\Program Files\\KiCad\\lib\\python2.7\\lib-dynload', 'C:\\building
# \\msys64\\mingw64', 'C:\\Program Files\\KiCad\\lib\\python2.7\\site-packages', 'C:\\Program Files\\KiCad\\lib\\python2.7\\site-packages\\wx-3.0-msw', '.', 
# 'C:/Program Files/KiCad/bin/../share/kicad/scripting/plugins']

execfile('C:/Users/bachman0/Documents/ZHAW_Module/PA/kicad/python/test1.py')
# 0 F.Cu
# [...]

# ex.

import sys
sys.path.append("/home/user/path/to/kicad-python/")
execfile("/home/user/path/to/kicad-python/examples/pcbannotate.py")

os.chdir('C:/Users/bachman0/Documents/ZHAW_Module/PA/kicad/python/svg2mod/')
execfile('svg2mod.py')

subprocess.call(['svg2mod.py', '-h'])
# Traceback (most recent call last):
#   File "<input>", line 1, in <module>
#   File "C:\Program Files\KiCad\lib\python2.7/subprocess.py", line 169, in call
#     return Popen(*popenargs, **kwargs).wait()
#   File "C:\Program Files\KiCad\lib\python2.7/subprocess.py", line 321, in __init__
#     errread, errwrite)
#   File "C:\Program Files\KiCad\lib\python2.7/subprocess.py", line 571, in _execute_child
#     startupinfo)
# WindowsError: [Error 193] %1 ist keine zulässige Win32-Anwendung

print sys.executable
# C:/Program Files/KiCad/bin/kicad.exe

subprocess.call([sys.executable, 'svg2mod.py', '-h'])
# not a good idea

subprocess.call(['python', 'svg2mod.py', '-h'])
# not a good idea

KiCad PCB EDA Suite – Python Plugin Development for Pcbnew

Welcome to KiCad Python API’s documentation!

KiCAD on OS X – How to use python scripts? [solved]

Kicad Scripting Table of Contents
The basics of scripting in pcbnew
modifying pcbnew layout from python