Just from a brief search, it looks like P802M is the version of the board, which is indeed Melzi 2.0. If that all needs to be filled back in I will be screwed. My printer came pre configured for the hardware it has so it knows the pitches of the leadscrews and all that stuff. I did see that the bed leveling seems to take over the Z axis limit switch so at least I know once I get the probe and mounting stuff for it I have all the hardware, but I have no idea as to the firmware.Īnd last, if you flash new new firmware, does that wipe out all the config stuff.

I also have no idea of what firmware to get or what has what features and what will fit or run on what boards. The next thing, is trying not to be redundant, how can you tell if the controller board, which in this case as far as I can tell is a Melzi 2 clone, has a bootloader on it already? I have seen a few videos that show going into the arduino GUI and selecting the board but it seems they select the processor on the board and I have no idea what that is. Perhaps the P802M_8_V1.6 is the version of the printer? When I first fire my printer up I get P802M_8_V1.6 and I am assuming that is the version of the firmware? I also get Repetier 0.91, which looks like the version of the firmware. I have a tronxy P802M that I would like to add auto bed leveling to, the type that used a touch probe as I tend to print on glass. I have some Q’s about how the whole eco system fits together. When you are finished, the Arduino is no longer required and can be re-purposed for other fun projects instead. From that point, firmware can be flashed over USB as many times as needed. Once it has been burned on your board, you will never have to do it again. The best part… a bootloader is permanent. We can use anything from an AVR programmer to a Raspberry Pi, but to keep things simple and cheap, an Arduino Uno and a few breadboard jumper wires will get the job done. Most importantly, we will need a device that can interact with and write code to our boards.

Since this is necessary to upload firmware via USB, we will look at one of the easiest ways to do it. Melzi boards, often used in budget 3D printers like the CR-10, Ender-3 and Maker Select are almost exclusively distributed without them. The problem is that in order to do so, the board must already have a bootloader pre-installed. If you want to add new features on your 3D Printer, such as Auto Bed Leveling or Power Loss Resume, you will probably need to flash new firmware on the electronics board.

Arduino 1.8.5 compile marlin