Damaged RAMPS Board
Posted: Mon Aug 05, 2013 12:52 pm
Hello to everyone. I am new to this forum and also new to 3d printing.
I had a look round and chose the Ord Bot as the best engineered DIY printer out there and I got a kit shipped to me in the UK from Automation Technology. The customs duty was a reasonable 35 GBP.
I am nearly there with the build having spent about 40+ hours on it so far. Obviously a lot of thought and effort has gone into the design.
I have an Arduino Mega 2560/Ramps 1.4 board/pololu stepper drivers. I also have the Smart LCD smart panel. Not sure which firmware was preloaded but I have now re flashed it with Marlin firmware and an Ord Bot configuration. Eventually got all the axis to move and extruder and bed to heat up. LCD smart controller worked OK both in stand alone mode and also powered through the USB from the PC. So far so good.
One of the last things to complete was the end stops. Using just 2 of the 3 wires, I wired S on ramps to NO on the switch (blue wire) and GND to C (black wire).
However disaster. I think I have plugged one of the endstops into the Ramps board upside down. Instead of S to GND this would connect + to GND. Something is damaged. The Ramps board will now not power up in stand alone mode. The screen lights up but there is no menu. As a test I tried an external 5v supply to the Arduino board power socket, the LEDS on the Arduino board light up but the RAMPS board LEDS and the screen are still dead.
Strange thing is everything still works OK when RAMPS is powered from a PC through the USB connection with the mains power unit on at the same time. The screen and menu is back and axis movements control fine. I could run the printer like this but I would like to be able to use it in stand alone mode.
Something on the 5v power side of the RAMPS board has been damaged I think. I checked the 2 resettable fuses with a meter and they both seem OK. Anybody got any ideas which components to check/replace or should I just cut my losses and buy a new board?
I had a look round and chose the Ord Bot as the best engineered DIY printer out there and I got a kit shipped to me in the UK from Automation Technology. The customs duty was a reasonable 35 GBP.
I am nearly there with the build having spent about 40+ hours on it so far. Obviously a lot of thought and effort has gone into the design.
I have an Arduino Mega 2560/Ramps 1.4 board/pololu stepper drivers. I also have the Smart LCD smart panel. Not sure which firmware was preloaded but I have now re flashed it with Marlin firmware and an Ord Bot configuration. Eventually got all the axis to move and extruder and bed to heat up. LCD smart controller worked OK both in stand alone mode and also powered through the USB from the PC. So far so good.
One of the last things to complete was the end stops. Using just 2 of the 3 wires, I wired S on ramps to NO on the switch (blue wire) and GND to C (black wire).
However disaster. I think I have plugged one of the endstops into the Ramps board upside down. Instead of S to GND this would connect + to GND. Something is damaged. The Ramps board will now not power up in stand alone mode. The screen lights up but there is no menu. As a test I tried an external 5v supply to the Arduino board power socket, the LEDS on the Arduino board light up but the RAMPS board LEDS and the screen are still dead.
Strange thing is everything still works OK when RAMPS is powered from a PC through the USB connection with the mains power unit on at the same time. The screen and menu is back and axis movements control fine. I could run the printer like this but I would like to be able to use it in stand alone mode.
Something on the 5v power side of the RAMPS board has been damaged I think. I checked the 2 resettable fuses with a meter and they both seem OK. Anybody got any ideas which components to check/replace or should I just cut my losses and buy a new board?