I'm starting with my first smoothieware-based board and it's almost working fine. I can print using webinterface (uploading GCode to SD card) and I can connect using Repetier and Pronterface. I also have an TFT32 LCD, which connects to second serial on the board (MKS). All programs and LCD works fine, I can move, set temperature, etc etc….
The problema is when I try to print. The printer starts to move (let's say the first 5 GCode lines) and then stop. I can't send anymore any command using the same interface. Ex: If I start printinf using Repetier (USB Serial), after some lines, printer stop and I can't send any commands using Repetier anymore, printer simple doesn't reply. But If I go to WebInterface, I can do anything, move, change temperature, etc… Also, temperature control still working, so the board itself is not freezed.
I know about the cable length (USB). But the same problem ocours with LCD, which has a 40cm flat cable direct on the board! Exactly the same problem! So my guess is not the length of cable or interference.
If I copy the same GCode to SD, printer works fine!
What am I doing wrong?