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Arduino Gcode reader


Arduino Gcode reader

By : user2953478
Date : November 21 2020, 01:01 AM
I hope this helps you . one of your big problem is that your while end when thwere are nomore carachter. This mean that if your loop consume the buffer FASTER than it get written (remeber:9600 baud mean 960Byte/s, arduino even if slow but can compute 16.000.000 operation/s...).
Another big problem MAY bethe lack of ram, os your output is truncated. there is some function to check real time usage of ram, see http://playground.arduino.cc/Code/AvailableMemory, stopping to use String and even char array is a way better idea; the code is not that hard to write!
code :
while (Serial.available()>0)
while ( (k=Serial.read()) != ' ' && k != '\n') //yes it is a bit weird like this
unsigned long timeout_ms = 1000; //timeout after 1 seconds from NOW!
unsigned long start_ms = millis();
int k=Serial.read();
while ( k != ' ' && millis()-start_ms < timeout_ms){// because here we expect "Gx ", why are you was also using k != '\n'? removed, feel free to add it back
    if (k == -1){
        k=Serial.read(); //read the next char
        continue; //return to the beginning of the while
    }
    [... do thigs...]
    k=Serial.read(); //read the next char
    //here you may add "start_ms = millis();" if you want to reset the timeout
}


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Receive USB serial data in arduino in combination with RFID reader

Receive USB serial data in arduino in combination with RFID reader


By : Nicolas Van Hoorde
Date : March 29 2020, 07:55 AM
I hope this helps . The arduino UNO only has 1 serial port, pin 0 and 1 are actualy connected to the usb port.
You will need to use softwareserial to create a serial port in the software to talk to your RFID Reader and connect the RFID reader to other pins then 0 and 1
Binary reader with arduino blinking 8 leds

Binary reader with arduino blinking 8 leds


By : user3836052
Date : March 29 2020, 07:55 AM
This might help you I´m trying to insert a binary raw sequence (01010100, 01101000, 01100001) into Arduino. I would like to make 8-led group blink in a loop, showing with light each 8-group binary sequence when: 0=light off and 1=light on. , Basically you could do something like:
code :
int myPins[] = {2, 3, 4, 5, 6, 7, 8, 9};
byte sequence[] = {B01001001,B00000001,B00000011};

void setup(){
  for(int i = 0; i < 8; i++){
    pinMode(myPins[i], OUTPUT);
  }
}

void loop(){
  for(int i = 0; i < 3; i++){
    turnOnOff(sequence[i]);
    delay(500); //just to see results
  }
}

void turnOnOff(byte data){
  for(int i = 0; i < 8; i++){
    boolean onOff = data & (B00000001 << i);
    digitalWrite(myPins[i],onOff);
  }
}
Modifying Gcode

Modifying Gcode


By : Ayashkanta Dash
Date : November 22 2020, 03:01 PM
Any of those help I am trying to open a .gcode file, read it, and based on what it reads add a specific number to the number attached to any string that contains 'Z' , I think this will work:
code :
from string import *
part_path = input(' Enter Directory for Part Number: ')  # Asks user to input directory of part number folder
part_path = part_path.replace(('\\'), '/')  # Converts \ to / in path to avoid escape characters
file_name = input('Enter the file name: ')
file_path = part_path + '/' + file_name + '.gcode'

gc = open(file_path)
gc_content = gc.readlines()
for l in gc_content:
    if 'Z' in l:
        l.rstrip()
        dex = l.index('Z')
        num = float(l[dex+1:])
        newnum = num + 1.0
        replace(l, str(num), str(newnum))
How to send one gcode command over USB?

How to send one gcode command over USB?


By : user3631157
Date : March 29 2020, 07:55 AM
I hope this helps . Adding an extra sleep period after my command fixed my issue. I can also now read back the initial set up feedback from the printer.
My final code without this is:
code :
import serial
import time

ser = serial.Serial('/dev/ttyUSB0', 115200)

time.sleep(2)
ser.write("G28\r\n")
time.sleep(1)
ser.close()
GCode and RS232

GCode and RS232


By : Jonathan Serrano
Date : March 29 2020, 07:55 AM
I wish did fix the issue. Gcode per se doesn't support reading anything from any peripheral. Gcode is nothing more than a line-oriented textual machine command format, and is typically fed from a storage medium or file into an interpreter. This interpreter determines the axes movements, usually incorporating some trajectory planner. Then the interpreter emits signals to a peripheral device (LPT port, special card, etc.) that are fed to motor controllers. So without more details, based on your question, I think you're going to need something else to handle any serial connection. If you could clarify or add more details a solution may become apparent.
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