No Start Signal Detected - Forcing Start
My QUB ThreeUp V3 on Windows 7 partially ran for a few days. Using Repetier-Host V 1.5.6, I could manually turn on the extruder and heated bed, but was unable to move any of the stepper motors. The X-Axis stepper motor didn't appear to move at all during test printing (everything else did). I decided to swap stepper controllers on the Ramps 1.4 to see if it was a bad controller. Unfortunately, I did this with the power on and fried the Arduino 2560 and possibly other stuff. The result was if the PS was connected to main power and Arduino/Ramps and then I plugged in the USB in to the computer, the computer completely shutoff immediately. So, I ordered a new Arduino 2560, Ramps 1.4 and stepper controllers and installed all of them. I "believe" I flashed the Arduino using Marlin file from GitHUB. I have no way to know if the Arduino is flashed or not. Repetier Host connects but I am unable to send any commands to the printer (no movement or warming of extruder/bed). When the computer connects there is an instantaneous bump in all of the stepper motors (I assume just a power surge). When RH starts it says: "No Start Signal Detected - Forcing Start." Then after waiting about 30 seconds it says "Communication Timeout - reset send buffer block". It will not do anything else except repeat the Communication Timeout message. Since then I have played around with COM ports, USB cables and even switched to a different computer running Windows 10 with no luck. I set COM40 as the com to avoid conflicts with the other ones. The Baud Rate is 250000. At this point I cannot go any further.