First of all, thanks for sharing your great work.
I use the polarshield server comiled for an Arduino Mega/Ramps 1.4 configuration (with A4988 drivers installed for Y and E1)
The polargraph cotroller struggled with garbage on the COM Port. There is a bug in comms.ino in the function void comms_extractParams(char* inS). When allocating space for the string on stack there has to be room for the trailing 0 character at the end of a C-string. (strlen() does not count this).
Therefore the first line (line:191) of the function should read as char in[strlen(inS) + 1];
The subsequent strcpy(in, inS) takes care about the trailing 0 of a C-string. so that's OK then.
Just another hint: My A4988 drivers did not get enabled. In configuration.ino I had to set the last parameter of setPinsInverted(false, false, true) to false, because the signal isn't inverted.
First of all, thanks for sharing your great work.
I use the polarshield server comiled for an Arduino Mega/Ramps 1.4 configuration (with A4988 drivers installed for Y and E1)
The polargraph cotroller struggled with garbage on the COM Port. There is a bug in comms.ino in the function void comms_extractParams(char* inS). When allocating space for the string on stack there has to be room for the trailing 0 character at the end of a C-string. (strlen() does not count this).
Therefore the first line (line:191) of the function should read as char in[strlen(inS) + 1];
The subsequent strcpy(in, inS) takes care about the trailing 0 of a C-string. so that's OK then.
Just another hint: My A4988 drivers did not get enabled. In configuration.ino I had to set the last parameter of setPinsInverted(false, false, true) to false, because the signal isn't inverted.