treeherder

import turtle
 window = turtle.Screen()         # set up the window color and title
 window.bgcolor("black")
 window.title("an educational exercise")

 treeherder = turtle.Turtle()       # create a turtle
 treeherder.color("green")          # make him draw a green line
 treeherder.pensize(5)

treeherder

#include <SoftwareSerial.h>
 
SoftwareSerial serial_device(7, 8);
unsigned char buff[512]; /* buffer */
int index=0;    
void setup()
{
  serial_device.begin(19200);               /* baud rate */  
  Serial.begin(19200);             /* works better when they match*/