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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))


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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
}
PERL script to interpret GCODE

PERL script to interpret GCODE


By : user3038206
Date : March 29 2020, 07:55 AM
I wish did fix the issue. I've been working on a PERL script that I received from yet another person on a 3D-printing forum. , This line here is what's wrong:
code :
# read stdin and any/all files passed as parameters one line at a time
while (< > ) {
while ( <STDIN> ) {
Convert string text to GCode

Convert string text to GCode


By : user1563413
Date : March 29 2020, 07:55 AM
Does that help What we ended up doing:
App asks for a String as input; String is converted to a bitmap and then saved as a .png; .png is loaded and converted to a .svg file. We used this repo: https://github.com/jankovicsandras/imagetracerandroid We developed a parser to convert a .svg to g-code.
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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