Marcel Stör marcelstoer

👨‍👩‍👧‍👧

The Earth was made round so that we would not see too far down the road - K.B.

Passionate clean coder, leading by example. @ThingPulse co-founder. @nodemcu firmware committer. Environmentalist.

marcelstoer / moody.lua

Last active June 9, 2016 19:35

Moody: NodeMCU with MAX7219 8x8 matrix display (SPI)

marcelstoer / debounce-with-tmr.lua

Last active December 7, 2019 06:05

NodeMCU debounce based on timer with GPIO pullup

	-- inspired by https://github.com/hackhitchin/esp8266-co-uk/blob/master/tutorials/introduction-to-gpio-api.md
	-- and http://www.esp8266.com/viewtopic.php?f=24&t=4833&start=5#p29127
	local pin = 4 --> GPIO2

	function debounce (func)
	local last = 0
	local delay = 50000 -- 50ms * 1000 as tmr.now() has μs resolution

	return function (...)
	local now = tmr.now()

marcelstoer / debounce.lua

Last active October 3, 2018 14:31

Debounce with NodeMCU with two separate functions for down/up trigger

	-- inspired by: http://www.esp8266-projects.com/2015/03/buttons-pushbuttons-and-debouncing-story.html
	local GPIO14 = 5
	local debounceDelay = <however-many-ms-your-sensor-requires>
	local debounceAlarmId = <0-6>
	gpio.mode(GPIO14, gpio.INT, gpio.PULLUP)
	gpio.trig(GPIO14, "down", doorLocked)

	function doorLocked()
	-- don't react to any interupts from now on and wait 50ms until the interrupt for the up event is enabled
	-- within that 50ms the switch may bounce to its heart's content

marcelstoer / wifi-watch.lua

Last active October 24, 2016 21:50

Keep NodeMCU connected to WiFi

	-- If you have a recent firmware from the dev branch you could do away with that ugly timer
	-- by relying on WiFi events and (re-)acting accordingly. See wifi.sta.eventMonReg() at
	-- https://github.com/nodemcu/nodemcu-firmware/wiki/nodemcu_api_en#wifistaeventmonreg

	-- init all globals
	...

	wifiReady = 0

	function configureWiFi()

marcelstoer / enable-os-x-screen-sharing.sh

Last active May 15, 2021 18:27

Enable OS X screen sharing from the command line, http://frightanic.com/apple-mac/enable-os-x-screen-sharing-command-line/

marcelstoer / spring-security-logout-without-csrf.xml

Last active March 1, 2016 12:42

Spring Security logout without CSRF protection

	...
	<!-- http://docs.spring.io/spring-security/site/docs/4.0.x/reference/htmlsingle/#filter-stack -->
	<!-- logout w/o CSRF protection if logout filter is placed before the CSRF filter -->
	<security:custom-filter before="CSRF_FILTER" ref="logoutFilter" />
	</security:http>

	<bean id="logoutFilter" class="org.springframework.security.web.authentication.logout.LogoutFilter">
	<constructor-arg name="logoutSuccessUrl" value="place-whatever-you-need-here" />
	<constructor-arg name="handlers">
	<list>

marcelstoer / net-send-queue.lua

Last active May 16, 2016 19:33

NodeMCU net send queue

	------------------------------------------------------------------------------
	-- Net send queueing helper
	--
	-- Created by devsaurus for https://github.com/nodemcu/nodemcu-firmware/pull/1207
	--
	-- See also
	-- https://nodemcu.readthedocs.io/en/dev/en/modules/net/#netsocketsend
	--
	-- Based on Vladimir Dronnikov's
	-- MQTT queuing publish helper

marcelstoer / validate-email.php

Created May 12, 2016 19:52

How to validate email with PHP

	<?php
	// inspired by a note at http://php.net/manual/en/function.getmxrr.php
	// further inspiration from https://github.com/webdigi/SMTP-Based-Email-Validation
	function validateEmail($email)
	{
	$emailValid = false;

	$domain = extractFullyQualifiedDomainFromEmail($email);
	$mxHost = findPreferredMxHostForDomain($domain);

marcelstoer / rotate-8x8-matrix-char_traditional.lua

Last active June 16, 2016 21:41

http://wp.me/pzoQb-sN shows how to draw to MAX7219 8x8 matrix displays, this gist shows the maybe "traditional" way of rotating characters

	local numberToTable = function(number, base, minLen)
	local t = {}
	repeat
	local remainder = number % base
	table.insert(t, 1, remainder)
	number = (number - remainder) / base
	until number == 0
	if #t < minLen then
	-- "pad" table with 0s
	for i = 1, minLen - #t do table.insert(t, 1, 0) end

marcelstoer / rotate-8x8-matrix-char_convert-while-rotating.lua

Created June 16, 2016 21:48

http://wp.me/pzoQb-sN shows how to draw to MAX7219 8x8 matrix displays, this gist shows how the convert the numbers while rotating

	local numberToTable = function(number, base, minLen)
	local t = {}
	repeat
	local remainder = number % base
	table.insert(t, 1, remainder)
	number = (number - remainder) / base
	until number == 0
	if #t < minLen then
	-- "pad" table with 0s
	for i = 1, minLen - #t do table.insert(t, 1, 0) end

	$ ssh <user>@<mac-without-screen>

	$ sudo defaults write /var/db/launchd.db/com.apple.launchd/overrides.plist com.apple.screensharing -dict Disabled -bool false
	$ sudo launchctl load /System/Library/LaunchDaemons/com.apple.screensharing.plist
	/System/Library/LaunchDaemons/com.apple.screensharing.plist: Service is disabled
	$ sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.screensharing.plist