Hi!
I have a Delta / Kossel type printer, I use arduino, repetier, RAMPS 1.4 for the printer. I have a problem with RAMPS 1.4, in that everytime I buy one, one of the digital pins usually fail, usually the extruder heater pin D10. I have had three now, that everytime I connect everything, then run repetier host, start heating up the extruder, it will heat up with the LED on, get to temp, and then the led will go off, the extruder will cool down, and then I am never able to heat up from that pin again. I'm just trying to get some input on how to stop frying this stupid things, usually I am able to still use D8 or D9 for the extruder and heated bed that I have, but now the third ramps that I have I bought so I could have three digital pins and have fan cooling capabilities, seems like all three have fried somehow because none of them are giving off the voltage, and the LED does not come on when I command to heat the extruder.
Would a resistor, diode, fuse or something stop me from frying these digital pins? Is it because I am buying cheap RAMPS boards and they aren't robust enough? This has happened with three different types of hot ends as well so I don't think it is a short or bad core.
Just looking for some input because I am going to try throwing in my old ramps board so I can print, but I don't want to buy a new RAMPS board, just to fry another pin and be back to square one.
I have a Delta / Kossel type printer, I use arduino, repetier, RAMPS 1.4 for the printer. I have a problem with RAMPS 1.4, in that everytime I buy one, one of the digital pins usually fail, usually the extruder heater pin D10. I have had three now, that everytime I connect everything, then run repetier host, start heating up the extruder, it will heat up with the LED on, get to temp, and then the led will go off, the extruder will cool down, and then I am never able to heat up from that pin again. I'm just trying to get some input on how to stop frying this stupid things, usually I am able to still use D8 or D9 for the extruder and heated bed that I have, but now the third ramps that I have I bought so I could have three digital pins and have fan cooling capabilities, seems like all three have fried somehow because none of them are giving off the voltage, and the LED does not come on when I command to heat the extruder.
Would a resistor, diode, fuse or something stop me from frying these digital pins? Is it because I am buying cheap RAMPS boards and they aren't robust enough? This has happened with three different types of hot ends as well so I don't think it is a short or bad core.
Just looking for some input because I am going to try throwing in my old ramps board so I can print, but I don't want to buy a new RAMPS board, just to fry another pin and be back to square one.