Problems with straight lines on Scara/Polar table

jeffeb3 · June 1, 2022, 12:07pm

karltinsly/gcode-feeder/blob/master/serialGrblDEMOKTv3.ino#L263

      
        
            	String line = "";
            
            
    Serial1.print("\r\n\r\n");			//Wake up grbl
                delay(2);
                emptySerialBuf(1);
                if(myFile){                                                                      
            	    while(myFile.available()){		//until the file's end
            	    	line = readLine(myFile);	//read line in gcode file 
            	      	Serial.print(line);		//send to serials
            	      	Serial1.print(line);
            	      	Serial.print(getSerial(1));	//print grbl return on serial
            		}
            	}
            	else
            		fileError();
            
            
	myFile.close();
            	Serial.println("Finish!!\n");
            	delay(2000);
            }

Karl is going even simpler and just reading any line from the serial port. If it is ‘error\n’, he still continues.

The 1:1 message to ‘ok’ can be a bit dangerous. Because you can’t ever miss one, or you’re stuck. But you also need to be careful, because if you accidentally time out and skip ahead, then your command might be dropped, or cut off. It is a tricky balance. Cncjs has had trouble with this. The touch screens have trouble with it. It’s tricky.