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kasperkamperman / fixwrongutf8encoding.php
Created July 3, 2018 11:58
Function to fix ut8 special characters displayed as 2 characters (utf-8 interpreted as ISO-8859-1 or Windows-1252)
<?php header('Content-Type: text/html; charset=utf-8'); ?>
<html>
<head>
<title>Fix wrong encoded UTF8 characters</title>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
</head>
<body>
<pre>
<?php
/* Problem description:
@kasperkamperman
kasperkamperman / application.cpp
Created March 11, 2016 14:19
Example implementation to receive commands over TCP on your Photon running FastLED animations.
/*
Example implementation to receive commands over TCP on your Photon running FastLED animations.
FastLED is not implemented you have to do that yourself.
It makes use of this Serial cmd protocol concept:
https://gist.github.com/kasperkamperman/7e827bb481dfcdb4cb52
See this Processing sketch to send TCP Data. Modify the IPAddress to the local address of the Photon.
https://gist.github.com/kasperkamperman/1f185758519fa3131ea0
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kasperkamperman / main.cpp
Last active August 18, 2022 08:41
DMA control of GPIO pins on Particle Photon STM32
#include "Particle.h"
// RM0033 MANUAL - Table 23 / Figure 1 System architecture
// Photon is STM32F205
// Only DMA2 is connected with GPIO ports https://stackoverflow.com/questions/46613053/pwm-dma-to-a-whole-gpio
// GPIO BSSRL/BSSRH/BSSR http://hertaville.com/stm32f0-gpio-tutorial-part-1.html
// DMA_Mode_Circular https://github.com/monkbroc/particle-speaker
// Ulrich Radig OctoArtnetNode https://www.ulrichradig.de/home/index.php/dmx/8-kanal-art-net
// Thanks to Julien Vanier for the idea of BSRR manipulation.
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kasperkamperman / oscP5senderReceiver.pde
Created January 10, 2016 15:51
Example for OSC explanation video: https://youtu.be/0uOR2idKvrM
/*
* oscP5sendreceive by andreas schlegel
* example shows how to send and receive osc messages.
* oscP5 website at http://www.sojamo.de/oscP5
* modified by Kasper Kamperman
* OSC explanation video: https://youtu.be/0uOR2idKvrM
*/
import oscP5.*;
import netP5.*;
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kasperkamperman / faceDetectProcessingOpenCV.pde
Created May 31, 2015 20:17
Face Detection on a mirrored webcam image. Track the position of the biggest face. Uses the OpenCV library for Processing.
/*
Face Detection example:
- including mirror effect
- track the position of the face
Install the OpenCV for Processing library (Sketch > Import library):
https://github.com/atduskgreg/opencv-processing
Check also the reference:
http://atduskgreg.github.io/opencv-processing/reference/
@kasperkamperman
kasperkamperman / sound_normalizing.ino
Created November 17, 2020 12:20
sound_normalizing
/* script to calibrate (sound level normalizing) a microphone (or other sensor).
used with Sound Sensor v2.0 from flamingoeda.com / electronic bricks
sampling based on Arduino Cookbook recipe "detecting sound" chapter 6.7
dim_curve idea by Jims <http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1174674545>
created 7 september 2011 Kasper Kamperman
http://www.kasperkamperman.com
This example code is in the public domain.
*/
@kasperkamperman
kasperkamperman / ReadPulseCooking.pde
Created June 13, 2019 20:30
Code in which I read serial data and write it to a CSV file. Used for a research project.
// ReadPulseCooking.pde
import processing.serial.*;
/*
http://pulsesensor.myshopify.com/
Uses a modified pulse sensor script in Arduino to update each 10ms
A different string is formulated with all the data
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kasperkamperman / callbucket_demo.php
Created October 18, 2018 11:23
This algorithm spreads out reoccurring (every n minutes) api calls over time, so server load is balanced. It's only the spreading out part.
<pre>
<?php
ini_set('display_errors', '1');
ini_set('error_reporting', E_ALL);
/* This algorithm spreads out reoccurring (every n minutes) api calls over time, so server load
is balanced. It's only the spreading out part.
The whole system uses a database with 60 columns. Each croncall (if we assume one a minute) we read out the
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kasperkamperman / frameDifferenceMat.pde
Created May 19, 2015 20:35
frameDifference with Mat OpenCV library for Processing
import org.opencv.core.Mat;
import gab.opencv.*;
import processing.video.*;
Capture video;
OpenCV opencv;
Mat cvLastFrameMat;
Mat cvThisFrameMat;
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kasperkamperman / dmxoutputdriver.ino
Last active February 4, 2018 20:06
Output DMX data on the Particle Photon. Transmission is done in the background with the DMA implementation. You can use any pin, so you are not restricted to the serial port. Counterpart is that it uses a lot of memory (4 bytes for every transmitted DMX bit).
/* Demo to create a DMX output on every pin of the Photon.
It send the information through DMA, so transmitting data won't cost you
extra CPU cycles. Counterpart of this method is that each bit occupies 32bits
(unt32_t) in memory. So almost half of the Photon's memory is used for the
data array.
You can choose to use continuousMode is DMX is transmitted on the maximum speed
of around 44 fps. You can't go faster (at least not if you use the whole buffer).
This code supports on pin, however without any additional memory cost you could