Duet2 Wifi PanelDue serial passthrough with Arduino Due

Olivimages

I tried this code, without storing the data in a variable it appears to react faster than before.

void loop() {
    // read from port 1, send to port 2, transmit from Duet to PanelDUE
while (Serial1.available() > 0) {
     Serial2.write(Serial1.read());
}
  // read from port 2, send to port 1, transmit from PanelDUE to Duet 
while (Serial2.available() > 0) {
    Serial1.write(Serial2.read());
}

zapta

@Olivimages said in Duet2 Wifi PanelDue serial passthrough with Arduino Due:

I tried this code, without storing the data in a variable it appears to react faster than before.

Possibly it's faster because you don't echo it and not because of the variable.

A Former User

to increase the speed further skip past the arduni serial and write good old avr fashioned code in its place.

also having a while loop process all the bytes in the queue would favour one direction of the link, putting a limt on the number of bytes in each loop might balance things out?

dhusolo

Not to hijack but I'm working on something similar. I have a Duet 2 Wifi, Panel Due and 5 inch screen with firmware 2.04. I want to make a G Code Sender with a simple 16 button keypad. Each button will have an assigned G Code to send to the printer. I have spare Arduino Nano, Mini, and ESP8266 so I have some options.

FelixH

@dhusolo if you have a PanelDue, why don't you just create macros??

dhusolo

@FelixH I've tried that but with the number of macros needed it would clutter the screen. I feel this would be easier during troubleshooting and I think it'll be pretty useful to others if I can get it working right.

FelixH

@dhusolo said in Duet2 Wifi PanelDue serial passthrough with Arduino Due:

@FelixH I've tried that but with the number of macros needed it would clutter the screen. I feel this would be easier during troubleshooting and I think it'll be pretty useful to others if I can get it working right.

I have plenty of macros on my Duet CNC. I de-clutter them by using folders and sub-folders. Not to discourage you ore anything, but your problem has a much easier solution than an external Arduino Gcode sender.

dhusolo

@FelixH I completely agree, there's an easier way of doing it. Just sometimes it'd be easier if i had a handheld controller vs having to navigate the touchscreen

FelixH

@dhusolo said in Duet2 Wifi PanelDue serial passthrough with Arduino Due:

@FelixH I completely agree, there's an easier way of doing it. Just sometimes it'd be easier if i had a handheld controller vs having to navigate the touchscreen

You can always have a look here:

https://forum.duet3d.com/topic/11389/cnc-style-pendant/122?_=1593623248420

remove all the code regarding the pendant (encoders, buttons, etc.) and just set what you want to do. Should be quite doable...

Olivimages

Hi all,

Here is the completed pendant/joystick

The potentiometer sets the feed speed for manual move
Left joystick for X and Y
Right Joystick for Z (up and down) and baby step Z (left and right)
Button on left joystick set work coordinate X Y to 0 while right joystick button set Z to 0.
Manual move occurs only when status is "Idle" and not processing.
Cable used is an ethernet cable with 8 wires, that insert between PanelDue and Duet, so Arduino is powered by Duet 5V.

I have searched a lot for smooth movements. Pushing maximum joystick sends 5mm move at maximum feed speed.
Pushing just a bit moves % (from 0 to 100%) of 5mm move and feed speed.
There is a calculation for the move duration, and send only a new G1 code only when previous move is terminated.
I can post the code but i need to clean it before.

dhusolo

@Olivimages That's pretty cool. Great job! are you planning on sharing the sketch and wiring diagram? I built a CNC pendant but I'd like to incorporate some of your features into mine.

Olivimages

Here is the sketch, need to be fine tuned but working very good already.
The wiring for serial is on this topic just above, wiring of joystick are on the Analog pins of arduino and buttons on Digital pins.
@dhusolo Let me know if you have remarks or improvement on the code, and show us your project.

#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#define COLUMS           20
#define ROWS             4
#define LCD_SPACE_SYMBOL 0x20  //space symbol from the LCD ROM, see p.9 of GDM2004D datasheet
LiquidCrystal_I2C lcd(PCF8574_ADDR_A21_A11_A01, 4, 5, 6, 16, 11, 12, 13, 14, POSITIVE);

/*
  Workbee CNC pendant
  Duet3d and PanelDue7i
  Olivier Dessy
*/

int PotX = 0;  // Joystick X reading
int PotY = 0;  // Joystick Y reading
int PotZ = 0;  // Joystick Z reading
int PotZB = 0;  // Joystick Z babystep reading
int PotF = 0;  // Potentiometer Feed reading
bool ButtonX = 0;  // Button X joystick
bool ButtonZ = 0;  // Button Z joystick
bool Button1 = 0;  // Button 1
bool Button2 = 0;  // Button 2
bool Button3 = 0;  // Button 3
bool Button4 = 0;  // Button 4
bool Button5 = 0;  // Button 5
float X = 0.2; // X move
float Y = 0.2; // Y move
float Z = 0.200; // Z move
float ZB = 0.002; // Z babystep move
int F = 0;
int PotFlcd = 0;
String Buffer ="";
String Move =""; // Instruction GCODE
String Message ="";
String Status ="";
// I=idle, P=printing from SD card, S=stopped (i.e. needs a reset), C=running config file (i.e starting up), A=paused, D=pausing, R=resuming from a pause, 
// B=busy (e.g. running a macro), F=performing firmware update, O=Vin power low
unsigned long startMillis;
unsigned long currentMillis;
unsigned long period=500;

void setup() {
  pinMode(22, INPUT);
  pinMode(23, INPUT);
  pinMode(24, INPUT);
  pinMode(25, INPUT);
  pinMode(26, INPUT);
  pinMode(27, INPUT);
  Serial1.begin(57600); // Serial port to Duet3d
  Serial2.begin(57600); // Serial port to PanelDue
  //  Serial1.print("M111 S1 P3\n"); // Start debug mode on USB
  Serial1.print(F("M575 P1 B57600 S0\n")); // Serial port without checksum for GCode commands
  Serial.begin(57600); // Programming port of Arduino Due for debug
  lcd.begin(16,4);
  lcd.setCursor(0,0);  
  lcd.print("Feed : ");
  startMillis=millis(); // Start time
}

void loop() {
    if (Buffer.substring(2,8) == "status") { // If status received, extract status
        Status = Buffer.substring(11,12);
    }
    Serial.print(Buffer); // Print received message from Duet3d for debug
    Buffer="";
    Readsensor(); // read the value from the sensor:
    period=(abs((max(abs(X),max(abs(Y),abs(Z+ZB)))/(F)*60.00*1000.00)*0.8)); // Wait for move to be terminated in ms
    if (abs(PotF-PotFlcd)>25) { // LCD Anti flickering, display only once when changed
      PotFlcd = PotF;
      Serial.print(String(PotFlcd));
      lcd.setCursor(7,0);  
      lcd.print(String(PotFlcd)+" mm/'   ");
    }
    currentMillis=millis();

    if ((abs(PotX) > 8 || abs(PotY) > 8 || abs(PotZ) > 15 || abs(PotZB) > 15) && (Status !="P") ) { // If one joystick is moved and machine not processing/printing
        F = PotF*(max(abs(PotX),max(abs(PotY),abs(PotZ)))/512.00); // Feed from 4% to 100% of F proportionnal to PotX 
        if (F < 150) { F=150; } // Avoid divide by 0  // Feed min 150mm/min max 3500mm/min, from 4% to 100% of F proportionnal to PotX 
        X = int((PotX)/100.00*10.00)/10.00; // Max potentiometer 512/100 -> X Y move of 5.12 mm max
        Y = int((PotY)/100.00*10.00)/10.00; 
        Z = int((PotZ)/5000.000*1000.000)/1000.000; // Max potentiometer 512/5000 -> Z move of 0.10 mm max
        ZB = int((PotZB)/100000.000*10000.000)/10000.000; // Max potentiometer 512/100000 -> ZB move of 0.005 mm max
        period=(abs((max(abs(X),max(abs(Y),abs(Z+ZB)))/(F)*60.00*1000.00)*1)); // Wait for move to be terminated in ms
        if (currentMillis-startMillis>=period) { // Start new move only when move is finished
          String Move = "G91 G1 X"+String(X)+"Y"+String(Y)+"Z"+String(Z+ZB)+" F"+String(F)+"\n" ;
          Serial1.print(F("G91\n"));
          Serial1.print(Move); // GCODE send
          Serial.println(Status+" start="+String(startMillis)+" current="+String(currentMillis)+" delay="+String(period)+" PotF="+String(PotF)+" Move="+String(Move)); // Debug print
          startMillis=currentMillis; // Reset delay count for next move
        }
    }
    else {  // If no joystick is moved do serial passthrough between Duet3d and PanelDue
       // read from port 1, send to port 2, transmit from Duet to PanelDUE
      while (Serial1.available() > 0) {
        Buffer = Serial1.readString();
        Serial2.print(Buffer);
      }
      // read from port 2, send to port 1, transmit from PanelDUE tu Duet 
      while (Serial2.available() > 0) {
        //    Serial.print(char(Serial2.peek()));
        Serial1.write(Serial2.read());
      }
    }

// Read buttons and execute macros    
if (ButtonX == LOW ) {
Serial1.println("M98 P""0:/macros/Set work X0 Y0""");
lcd.setCursor(0,1);
lcd.print("Set work X0 Y0  ");
delay(1000);
lcd.setCursor(0,1);
lcd.print("                ");
}
if (ButtonZ == LOW ) {
Serial1.println("M98 P""0:/macros/Set work Z0""");
lcd.setCursor(0,1);
lcd.print("Set work Z0     ");
delay(1000);
lcd.setCursor(0,1);
lcd.print("                ");
}
if (Button1 == HIGH ) {
Serial1.println("M98 P""0:/macros/Probe XYZ Left Front 6,35 tool""");
lcd.setCursor(0,1);
lcd.print("Probe XYZ 6,35  ");
delay(2000);
lcd.setCursor(0,1);
lcd.print("                ");
}
if (Button2 == HIGH ) {
Serial1.println("M98 P""0:/macros/Probe Z""");
lcd.setCursor(0,1);
lcd.print("Probe Z         ");
delay(2000);
lcd.setCursor(0,1);
lcd.print("                ");
}
if (Button3 == HIGH ) {
Serial1.println("M98 P""pause.g""");
lcd.setCursor(0,1);
lcd.print("Pause           ");
delay(2000);
lcd.setCursor(0,1);
lcd.print("                ");
}
if (Button4 == HIGH ) {
Serial1.println("M98 P""stop.g""");
lcd.setCursor(0,1);
lcd.print("Stop            ");
delay(2000);
lcd.setCursor(0,1);
lcd.print("                ");
}
}
void Readsensor() {
  PotX = map(analogRead(A0),0,1023,-512,512)-8; // Offset of -8 joystick not at 0 at center
  PotY = map(analogRead(A1),0,1023,-512,512)-5;
  PotZ = map(analogRead(A2),0,1023,-512,512)+7;
  PotZB = map(analogRead(A4),0,1023,-512,512);
  PotF = map(analogRead(A3),0,1023,3500,150); // Feed min 150mm/min max 3500mm/min
  ButtonX = digitalRead(22);
  ButtonZ = digitalRead(23);
  Button1 = digitalRead(24);
  Button2 = digitalRead(25);
  Button3 = digitalRead(26);
  Button4 = digitalRead(27);
}

dhusolo

@Olivimages Are you using a normal pot(like a 10K/20K) or a rotary encoder?

Olivimages

@dhusolo said in Duet2 Wifi PanelDue serial passthrough with Arduino Due:

@Olivimages Are you using a normal pot(like a 10K/20K) or a rotary encoder?

I used normal pot, these one : https://www.gotronic.fr/art-module-potentiometre-gravity-dfr0054-19304.htm