import time
from pyb import UART
# UART 3, and baudrate.
uart = UART(3, 19200, timeout_char=200)
location = "40" #place to put the goal location
while True:
uart.write("s")
uart.write(location)
uart.write("e")
if uart.any():
print(uart.read())
time.sleep_ms(1000)