Fuz Hackerspace

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====== AC giant led matrix ======

<WRAP round box 60%>
===== Goals =====
  * allumer une matrice de led alphanumérique sur plusieurs dizaine de mètres
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===== Ressources =====
  * collab [[user:jeanneret|nico]] , [[user:barzi]], [[user:drix]], [[user:fabien]]
  * [[https://hackaday.io/project/163657-hdmi-to-fpga-to-apa102|giant led panel with fpga]] .. interesting RS485 data transmitter for long distances (with board)

===== Ressources =====
  * [[https://www.vishay.com/docs/83608/h11aa1.pdf|Optocoupleur/capteur 240V du secteur]]
  * [[https://hackspark.fr/fr/electronique/1310-relay-module-solid-state-high-level-8-channel-5v-dc-.html|solid state relayX8]] qui est zerocrossing

===== Dev log =====

==== session 22 fev 2019 ====
{{:projets:fuz:acmatrix_leds_action.jpg?400|}}
{{:projets:fuz:acmatrix_zero_crossing.jpg?400|hint: the code is not working here...(should be waiting for HIGH)}}
{{:projets:fuz:acmatrix_relays.jpg?400|}}
{{:projets:fuz:acmatrix_scanlines.jpg?400|}}

===== Code =====

++++ Code arduino 240V lettres 2 colonnes |
<code c>

#include <DIO2.h>
#define DEBUG false

#define COL_NB 2
#define LIN_NB 7

int pin_col[COL_NB] = {3, 2};
int pin_lin[LIN_NB] = {4, 5, 6, 7, 8, 9, 10};

int seg[2][7] = { {0, 1, 0, 1, 0, 0, 0},{1, 0, 1, 0, 1, 0, 0} };

//AC
#define  pinACsense A0
int last_AC_detect = LOW;

void setup() {
  //AC
  pinMode2(pinACsense, INPUT);
  pinMode2(LED_BUILTIN, OUTPUT);

  for (int i = 0; i < COL_NB; i++) {
    pinMode2(pin_col[i], OUTPUT);
  }

  for (int i = 0; i < LIN_NB; i++) {
    pinMode2(pin_lin[i], OUTPUT);
  }

  if (DEBUG) Serial.begin(115200);
  if (DEBUG) Serial.println("let's rock!");
}


int letter[7];

void loop() {
  //int digitNb = ((long)millis / 1000) % 2;

  // COLONNES < 2
  for (int j = 0; j < 2; j++) {

    // copy current letter
    /*
    for (int k = 0; k < 7; k++) {
      letter[k] = seg[j][k];
      if (DEBUG) Serial.print(letter[k]);
      if (DEBUG) Serial.print("\t");
    }
    if (DEBUG) Serial.println("");
    */
    ////////////////////

    // allume une colonne
    int b = pin_col[j];
    digitalWrite2(b, HIGH);


    // LIGNES < 7
    for (int i = 0; i < 7; i++) {

      int a = pin_lin[i];

      //if (letter[i] == 1) {
      if (seg[j][i] == 1) {
        digitalWrite2(a, HIGH);
        if (DEBUG) Serial.print("HIGH");
      }
      else {
        digitalWrite2(a, LOW);
        if (DEBUG) Serial.print("LOW");
      }
      if (DEBUG) Serial.println("");

    } // end lines


    // persistence retinienne (env 40ms)
    
    delayMicroseconds(9000);
    
    // Wait for AC sync...
    int AC_detect = LOW;
    while ( AC_detect !=  HIGH) {
      AC_detect = digitalRead2(pinACsense);
    }


    // cols down
    digitalWrite2(b, LOW);
     
    // lines down
    for (int t = 0; t < 7; t++) {
      int z = pin_lin[t];
      digitalWrite2(z, LOW);
    }
    
  } // end cols

}
</code>
++++

++++ Code arduino 240V led matrix test simple  | 
<code c>
#define COL_NB 2
#define LIN_NB 7

int pin_col[COL_NB] = {2, 3};
int pin_lin[LIN_NB] = {4, 5, 6, 7, 8, 9, 10};



void setup() {
  for (int i = 0; i < COL_NB; i++) {
    pinMode(pin_col[i], OUTPUT);
  }

  for (int i = 0; i < LIN_NB; i++) {
    pinMode(pin_lin[i], OUTPUT);
  }

  Serial.begin(114200);
  Serial.println("let's rock!");
}

void loop() {

  for (int i = 0; i < 2; i++) {
    int a = random(2) + 2;
    //int a=pin_col[i];

    digitalWrite(a, HIGH);
    Serial.print("col= ");
    Serial.println(a);

    for (int j = 0; j < LIN_NB; j++) {
      int b = random(7) + 4;
      //int a=pin_lin[j];

      digitalWrite(b, HIGH);
      Serial.print("line= ");
      Serial.println(pin_lin[j]);
      delay(50);
      
      random(5)==0?digitalWrite(b, LOW):digitalWrite(b, HIGH);
    }

    digitalWrite(a, LOW);

    /*
        for (int j = 0; j < LIN_NB; j++) {
          //digitalWrite(pin_lin[j], HIGH);
          Serial.print("line= ");
          Serial.println(pin_lin[j]);
          delay(10);
          digitalWrite(pin_lin[j], LOW);
        }

        digitalWrite(pin_col[i], LOW);
    */
  }

}
</code>
++++

++++ Code arduino 240V led matrix with AC sensing and FastIO | 
<code c>
#include <DIO2.h>


#define COL_NB 2
#define LIN_NB 7

int pin_col[COL_NB] = {2, 3};
int pin_lin[LIN_NB] = {4, 5, 6, 7, 8, 9, 10};

//AC
#define  pinACsense A0
int last_AC_detect = LOW;

void setup() {
  //AC
  pinMode2(pinACsense, INPUT);
  pinMode2(LED_BUILTIN, OUTPUT);

  for (int i = 0; i < COL_NB; i++) {
    pinMode2(pin_col[i], OUTPUT);
  }

  for (int i = 0; i < LIN_NB; i++) {
    pinMode2(pin_lin[i], OUTPUT);
  }

  //Serial.begin(114200);
  //Serial.println("let's rock!");
}

int intensity_time = 0;
int step = 40;
//  bool back_from_last_scan = false;
  
void loop() {
  
  // LIGNES < 7
  for (int i = 0; i < 4; i++) {

/*
    int AC_detect = LOW;
    // Wait for AC sync...
    while ( AC_detect !=  HIGH || back_from_last_scan) {
      AC_detect = digitalRead(pinACsense);
    }
*/
    int a = pin_lin[i];

    digitalWrite2(a, HIGH);

    // COLONNES < 2
    for (int j = 0; j < 2; j++) {

      int b = pin_col[j];
      digitalWrite2(b, HIGH);

    }

    int AC_detect = LOW;
    // Wait for AC sync...
    while ( AC_detect !=  HIGH) {
      AC_detect = digitalRead2(pinACsense);
    }
    
    //delayMicroseconds(9000);
    /*
        delayMicroseconds(intensity_time);
        intensity_time += step;
        if(abs(intensity_time) > 9000) step=-step;
    */
    // ligne down
    digitalWrite2(a, LOW);

    // cols down
    for (int j = 0; j < 2; j++) {
      int b = pin_col[j];
      digitalWrite2(b, LOW);
    }

//    back_from_last_scan = true;

  }

}
</code>
++++


===== Roadmap =====
  - trouver le principe 
  - sourcer les compos
  - faire la matrice
  - faire la commande
  - faire le programme
  - assembler le tout !

<WRAP notice round box 70%>
===== Follow-up =====
  * Project created on **Fri 15-02-19** by **[[mailto:barzi@jack.tf|barzi]]**
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