Just some notes for now) Connect to PC with HL-2303 cable. Use serial console (From Arduino IDE). 38400 baud. The mower says: Ambrogio Line50 Basic EUR Board AM50 5.0 Built on May 24 2012 14:28:08 with r12947 Copyright (C) 2008 Zucchetti Centro Sistemi SPA TEST A: Passed TEST B: Passed And repeats that.