The printing bed has been installed as well the hot-end of the extruder. I had a bit of problem mounting of the hot-end, because the cold part of the extruder didn't had the right mounting holes pre drilled for my arcol.hu hot-end. It looks I had an older version of the Wade's extruder. But a little drilling and filing solved the issue. I installed the Arduino Mega 2560 board to the printer. I configured and uploaded the firmware software onto the board. I run a "virtual" printing test with the board, all looks good. Now, I'm waiting for two more piece of electronics from oversee.