![]() 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.
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