Arduino Workshops in March

HackerSpaceBrussels (HSB) is organising a series of workshops around the Arduino, an open source hardware platform.

What is Arduino?

The Arduino is a small board with an 8-bit microcontroller which can be easily programmed. It can operate connected to your computer or in stand-alone mode.

What can I do with it?

Some examples of applications:

• Switch on and off the lights in your hackroom with cron job
• Switch on and off your computer from a website
• Make a LED blink when you have new mail
• make a glowing and pulsating red heart for your significant other
• Mind-altering christmas lights

Agenda

• Tue 03 Mar@19:30: Introduction: buy an arduino, first steps
• Tue 10 Mar@19:30: First lessons: blinking leds, examples of C code
• Tue 17 Mar@19:30: Serial communications & binary data mayhem
• Sat+Sun 20+21 Mar: Mididuino workshop: arduino to do midi communication(think sound/rythms) with Wesen
• Tue 24 Mar@19:30: free for experimenting
• Tue 31 Mar@19:30: there will be a talk&tryout on servomotors (if somebody finds L497&L298 IC's/ or an ULN2004, we can tryout steppers too ) / also a talk on 'state machines' and how you can code them / free for experimenting

Tue 03 Mar

• get your arduino
• get it connected to you pc : there's a nice overview here
• install the Arduino software. Again good info at | ladyada's
• ow and drop some bucks into our money vault

Sat-Sun 07-08 Mar

• our friends (anyone named ellentriek is my friend ;-) organize a weekend full of wires, leds, soldering irons at the Compilotheque; we'll join in so come over with your project(-idea) or questions…

Tue 10 Mar

• arduino's 'hello world' : blinking a LED (checking out the example sketches available in the Arduino software) ladyada lesson 2
• contact! wirez, resistors, and all that jazz : ladyada lesson 3

Tue 17 Mar

• gibberish chatter : serial communication lesson 4
• inputs floating around: connecting a pushbutton lesson 5

Sat-Sun 21-22 Mar

• mididuino mayhem: a look into the workings of midi, and how to get it all connected

Tue 24 Mar

• come up with a nice project

Tue 31 Mar

• there will be a talk&tryout on servomotors (if somebody finds L297&L298 IC's/ or an ULN2004, we can tryout steppers too ) and also a talk on 'state machines' and how you can code them. The session will also be free for experimenting.

For Beginners

• If you don't know anything about electronics: we'll get you started. We'll explain how the components work and what you can do with it. We'll show you how to connect them without soldering.
• If your not a programmer, that's fine. The code to run these things is pretty basic, and a little brain combined with the awesome power of copy/paste will find it's way in this.
• If you're an accountant, no prob. If you're eager to learn you will be able to manage this.

For Advanced users

• Those of you who like to take it to another (volume-)level are invited to the two-day workshop on the weekend of 21/22 april.
• Wesen, the developer of the miduino will be with us to show his stuff.
• Think: beats and bleeps modified by an remixed arduino.

Fee

We ask a little fee for the whole package of sessions: 10EUR (sessions + workshop) in order to pay Wesen's train tickets & cover some material and infrastructure.

Location

Void*pointer
av. princesse elisabeth 46
1030 schaerbeek
http://L45.be/where

Transport

• Car sharing: from Ghent, email eb.citanaf|oniudra#eb.citanaf|oniudra

Registration

Space is limited, so we ask you to register in advance by:

1. send an email to eb.citanaf|oniudra#eb.citanaf|oniudra AND
2. register on Doodle

Requirements

• Bring your laptop/computer
• Bring your arduino

Buy

You can buy an Arduino at the 3rd of March meeting for around 25EUR. Pre-order one by sending your name and quantity to eb.citanaf|oniudra#eb.citanaf|oniudra. Apparently a belgian distributor has risen up really recently (feb 2009) they are coming over 3rd of March to void*pointer.

Mailing

See draft version 19. Edit here.

>> show me more <<

=======================================================================
          HSB announces Arduino Workshops (Brussels, March)
=======================================================================

HackerSpaceBrussels (HSB) is organising a series of workshops around the
Arduino, an open source hardware platform. There will be five evening
sessions on Tuesdays (03-10-17-24-31 of March) and a weekend workshop
(21-22 of March).

What is Arduino? 
================

The Arduino is a small board with an 8-bit microcontroller which can be
easily programmed. It can operate connected to your computer or in
stand-alone mode.

What can I do with it?
======================

Some examples of applications:
* Switch on and off the lights in your hackroom with cron job
* Switch on and off your computer from a website
* Make a LED blink when you have new mail
* make a glowing and pulsating red heart for your significant other
* Mind-altering christmas lights

For Beginners
=============

If you don't know anything about electronics: we'll get you started.
We'll explain how the components work and what you can do with it.
We'll show you how to connect them without soldering.
If your not a programmer, that's fine. The code to run these things is
pretty basic, and a little brain combined with the awesome power of
copy/paste will find it's way in this.
If you're an accountant, no prob. If you're eager to learn you will be
able to manage this.

For Advanced users
==================
Those of you who like to take it to another (volume-)level are invited
to the two-day workshop on the weekend of 21/22 april.
Wesen, the developer of the miduino will be with us to show his stuff.
Think: beats and bleeps modified by an remixed arduino.

Agenda
======

* Tue 03 Mar@19:30: Introduction: buy an arduino, first steps
* Tue 10 Mar@19:30: First lessons: blinking leds, examples of C code
* Tue 17 Mar@19:30: Serial communications & binary data mayhem
* Sat+Sun 20+21 Mar: Mididuino workshop: arduino to do midi
  communication(think  sound/rythms) with Wesen
* Tue 24 Mar@19:30: free for experimenting
* Tue 31 Mar@19:30: free for experimenting

Fee
===

We ask a little fee for the whole package of sessions: 10EUR (sessions +
workshop) in order to pay Wesen's train tickets & cover some material
and infrastructure.

Location
========

Void*pointer
av. princesse elisabeth 46
1030 schaerbeek
http://L45.be/where

Transport
=========

* Tram 23-56-92: halte Princesse Elisabeth
* Tram 55-33: halte Verboekhoven
* Car sharing: from Ghent, email [e-mail]

Registration
============

Space is limited, so we ask you to register in advance by:

1. send an email to [e-mail]
AND
2. register on Doodle:
http://www.doodle.com/participation.html?pollId=dizb67dq3rvb9shh

Requirements
============

* Bring your laptop
* Bring your arduino

Buy
===

You can buy an Arduino at the 3rd of March meeting for around 25EUR.
Pre-order one by sending your name and quantity to [e-mail].

Links
=====

http://arduino.cc
http://hsb.wikidot.com/arduino
http://hsb.wikidot.com/mididuino-workshop
http://ruinwesen.com
http://www.ladyada.net/learn/arduino/index.html

Code examples

>> show me more <<

Blinking LED

const int ledPin = 13;
const int timeInterval = 100;

void sendDOT()
{
  digitalWrite(ledPin, HIGH); 
  delay(timeInterval);  
  digitalWrite(ledPin, LOW); 
  delay(timeInterval);  
}
void sendDASH()
{
  digitalWrite(ledPin, HIGH); 
  delay(timeInterval * 3);  
  digitalWrite(ledPin, LOW); 
  delay(timeInterval);  
}

void setup() {
  pinMode(ledPin,OUTPUT);
}

void loop(){
 sendDOT();
 sendDASH();

}

Morse example

char* morse[] = {
".-",  // A
"--",  // B
"..-", // C
".-.", // D
"-.-", // F
".--", 
".-..", 
".-.-", 
".--.", 
"-..-", 
};

char word[] = "ABCD";

void setup(){
  Serial.begin(9600);

}

void loop() {
  int wordlen = strlen(word);

  for(int i=0; i<wordlen; i++) { 
    int index = word[i] - 65;
    send_morsecode(index);
  }

}

void send_morsecode(int index) {
   char * morsecode = morse[index];
   int length = strlen(morsecode);

   for(int i=0; i<length; i++) {
     send_bit( morsecode[i] ); 
   }
}

void send_bit(char b) {
 Serial.print(b);

  if(b == '.') {
  digitalWrite(13, HIGH);
  delay(100);
  digitalWrite(13, LOW);
  delay(100);
 } else if( b=='-') {
  digitalWrite(13, HIGH);
  delay(500);
  digitalWrite(13, LOW);
  delay(100);
 }
}

Joost's code

/*
 * Exercise: show "Hackerspace Brussels" in Morse code on the led on pin 13.
 *
 * 
 */

static const char *bhs = "hackerspace brussels";

static const int dotMark = 1;
static const int dashMark = 3;
static const int intraCharGap = 1;
static const int betweenLettersGap = 3;
static const int betweenWordsGap = 7;

static const int wordsPerMinute = 33; // 33;
static const int charsPerMinute = wordsPerMinute * 5;
static const int unitTimeMs = (600*1000)/charsPerMinute;

static const char *codeTable[] = {
  ".-",   // A
  "-...", // B
  "-.-.", // C
  "-..",  // D
  ".",    // E
  "..-.", // F
  "--.",  // G
  "....", // H
  "..",   // I
  ".---", // J
  "-.-",  // K
  ".-..", // L
  "--",   // M
  "-.",   // N
  "---",  // O
  ".--.", // P
  "--.-", // Q
  ".-.",  // R
  "...",  // S
  "-",    // T
  "..-",  // U
  "...-", // V
  ".--",  // W
  "-..-", // X
  "-.--", // Y
  "--..", // Z

};

static const int ledPin = 13;   // LED connected to digital pin 13

void setup()                    // run once, when the sketch starts
{
  pinMode(ledPin, OUTPUT);      // sets the digital pin as output
}

static inline void doGap(int gapSize) {
  digitalWrite(ledPin, LOW);
  delay(unitTimeMs * gapSize);
}

static inline void doMark(int markSize) {
  digitalWrite(ledPin, HIGH);
  delay(unitTimeMs * markSize);
}

static inline void doSpace() {
  doGap(betweenWordsGap);
}

static inline void doChar(char c) {
  c &= (0xFF-0x20); // capitalize
  if (c == 0) {
    doSpace();
    return;
  }
  c -= 'A';
  const char * code = codeTable[c];
  while (*code != 0) {
    if (*code == '-') { doMark(dashMark); }
    else { doMark(dotMark); }
    ++code;
    // make sure we don't set an intraChar gap at the end of the char
    if (*code != 0) {
      doGap(intraCharGap);
    }
  }
  doGap(betweenLettersGap);
}

static inline void doTxt(const char *txt) {
  while(*txt != 0) {
    doChar (*txt);
    ++txt;
  }
  doSpace();
  doSpace();
}

void loop()                     // run over and over again
{
  doTxt(bhs);
}

Joost's version (serial)

/*
 * Exercise: show "Hackerspace Brussels" in Morse code on the led on pin 13.
 * Modification that uses the serial port.
 * 
 */

static const char *bhs = "hackerspace brussels";

static const int dotMark = 1;
static const int dashMark = 3;
static const int intraCharGap = 1;
static const int betweenLettersGap = 3;
static const int betweenWordsGap = 7;

static const int wordsPerMinute = 33; // 33;
static const int charsPerMinute = wordsPerMinute * 5;
static const int unitTimeMs = (1200*1000)/charsPerMinute;

static const char *codeTable[] = {
  ".-",   // A
  "-...", // B
  "-.-.", // C
  "-..",  // D
  ".",    // E
  "..-.", // F
  "--.",  // G
  "....", // H
  "..",   // I
  ".---", // J
  "-.-",  // K
  ".-..", // L
  "--",   // M
  "-.",   // N
  "---",  // O
  ".--.", // P
  "--.-", // Q
  ".-.",  // R
  "...",  // S
  "-",    // T
  "..-",  // U
  "...-", // V
  ".--",  // W
  "-..-", // X
  "-.--", // Y
  "--..", // Z

};

static const int ledPin = 13;   // LED connected to digital pin 13

void setup()                    // run once, when the sketch starts
{
  pinMode(ledPin, OUTPUT);      // sets the digital pin as output
  Serial.begin(9600);
}

static inline void doGap(int gapSize) {
  digitalWrite(ledPin, LOW);
  delay(unitTimeMs * gapSize);
}

static inline void doMark(int markSize) {
  digitalWrite(ledPin, HIGH);
  delay(unitTimeMs * markSize);
}

static inline void doSpace() {
  doGap(betweenWordsGap);
}

static inline void doChar(char c) {
  c &= (0xFF-0x20); // capitalize
  if (c == 0) {
    doSpace();
    return;
  }
  c -= 'A';

  // make sure we ignore non-alpha chars
  if (c > 25) return;

  const char * code = codeTable[c];
  while (*code != 0) {
    if (*code == '-') { doMark(dashMark); }
    else { doMark(dotMark); }
    ++code;
    // make sure we don't set an intraChar gap at the end of the char
    if (*code != 0) {
      doGap(intraCharGap);
    }
  }
  doGap(betweenLettersGap);
}

static inline void doTxt(const char *txt) {
  while(*txt != 0) {
    doChar (*txt);
    ++txt;
  }
  doSpace();
  doSpace();
}

void loop()                     // run over and over again
{
  if (Serial.available()) {
    char c = Serial.read();
    doChar(c);
    Serial.print(c, BYTE);
  }
}

int ledPin = 13;                // LED connected to digital pin 13

void setup()                    // run once, when the sketch starts
{
  pinMode(ledPin, OUTPUT);      // sets the digital pin as output
}

void loop()                     // run over and over again
{
  for(int foobar=0; foobar < 256; foobar++ )
  {
   analogWrite(ledPin, foobar);  
   analogWrite(3, foobar);  
   delay(10);                
  }
 }

Frankenstein

int frankenstein;

void setup() {

  Serial.begin(9600);
  frankenstein = 0;

}

int some_sum(int a) {
  int sum = a + 10;
  return sum;
}

void loop() {
  frankenstein = some_sum( frankenstein );
  Serial.println(frankenstein);
}

Servo example

#include <Servo.h>
Servo servo1;

void setup() {
  servo1.attach(9);  // digital pin 9
  Serial.begin(9600);
  Serial.println("Ready");
}

void loop() {
  static int v = 0;
  for(int i = 0 ; i< 180; i+=10) {
      delay(1000);
      servo1.write(i);
      Serial.println(i);
  }
}

Pictures