Using a Mega 2560 and Marlin 1.1-RC6 (I've got a CoreXY setup put together here), I'm having trouble getting Marlin to boot up. When I connect power, I get a sort of flickering screen (I'm using a "RepRapDiscount Smart Controller" clone with the character-based LCD). If I hit the reset button on the RAMPS, it starts flickering with a bit of the Marlin boot screen (the top left corner of the "bubble", 1-3 characters of it), and then goes out. On and off, on and off.
If I flash the firmware via the Arduino IDE, after flashing, Marlin boots normally after the flash is complete.
Also, and I just figured this out, if I have the Arduino IDE "serial monitor" open, it boots fine. Strange.
I assume I've screwed something up, but I can't figure out what. Anyone have any ideas?
If I flash the firmware via the Arduino IDE, after flashing, Marlin boots normally after the flash is complete.
Also, and I just figured this out, if I have the Arduino IDE "serial monitor" open, it boots fine. Strange.
I assume I've screwed something up, but I can't figure out what. Anyone have any ideas?