OMG it was the contrast! It works now. Thank you guys for the help!by Mellin - Reprappers
Should I try to connect them backward? Is there a risk of damaging the LCD by doing that? What about the #3 that Dust mentioned? Now that I switched to the newest firmware and Arduino, the constant sound is gone, so maybe it is a contrast issue. To change it I should just rotate the adjustable resistor on the back of the LCD module?by Mellin - Reprappers
Here is a close up of both controller's and board's connectors: [1drv.ms] I made sure to connect EXP1 to EXP1 and EXP2 to EXP2.by Mellin - Reprappers
Here is the side from which I bought the control panel: I bought the main board from the same site: Just in case I add my own photos of the back of the control panel too: [1drv.ms]by Mellin - Reprappers
Ok, I got myself newest Marlin (1.1.9) and newest Arduino (1.8.9). But problems rise anew. First of all, inside of the Configuration.h there is no portion like the one you quoted. Using the Ctrl+F I couldn't find any instance of the "#define DOGLCD", but "#define ULTRA_LCD" is present, but when I enabled only that line in LCD portion, nothing changed. The screen still is blue with nothing. Iby Mellin - Reprappers
Ok, it looks like the drivers were just taking way longer then they should to install. Board is now visible under COM7. Thanks Dusk for the idea, but thankfully it worked without removing ramps. Since I am using both Marlin from that out of date site as well as the Arduino version mentioned on it, it should work at least until I move to newer Marlin. I can upload firmware no problem now. Althoby Mellin - Reprappers
Hi. I am currently building myself a printer using RAMPS 1.4 + Arduino MEGA 2560, but after assembling everything I started prepping for uploading firmware and I came across a problem. Whenever I connect the board to my PC using a USB cable, it does not show up in my Device Manager. Not as "Unknown Device" under "Other devices" and not as anything else. I tried both with 12V power supply and wiby Mellin - Reprappers
No, I'm not. I have a usbasp programmer (or whatever that is called), because I had to burn bootloader to the previous too. But I don't remember how to... I know how to connect it to the board, bot I don't remember what I should select inside Arduino and I don't want to try and error this problem out.by Mellin - Sanguino(lolu)
Hi! I have a problem with my Sanguinololu 1.3a I recently wanted to upload to it Marlin firmware, because I had to install new ATMEGA1284P-PU microcontroller, but in Arduino 0023 I keep getting "avrdude: stk500_getsync(): not in sync: resp=0x00" error after trying to upload. I tried ways described in article: I tried that 10 seconds reset holding. I already had those 2-pin connected before. Iby Mellin - Sanguino(lolu)