Marlin VS Sanguino

There is _a lot_ wrong with Marlin. It is a complex codebase, full with ancient artefacts, litterred with preprocessor ifdefs every 2-3 lines of code, dynamic includes in the middle of CPP files, etc[1]. It's about as unreadable as C++ code gets--well, I guess it's not template metaprogramming.

Klipper by contrast is a breeze to read through[2].

I am very grateful for Marlin, for all of reprap, and everyone who has contributed to it. But saying there is nothing wrong with it is straight up misguided.

[1]: https://github.com/MarlinFirmware/Marlin/blob/bugfix-2.1.x/M...

[2]: https://github.com/Klipper3d/klipper/blob/master/src/lcd_hd4...

i spent some time and successfully rebased Kobra 2.8.2 OG firmware from an unknown Marlin ~2.0.8 frankenstein to a clean latest (as of now) release (not bugfix) 2.1.x -- v2.1.2.1 + 1 commit

As an example, check the macropocalypse in Marlin - but the actual trigger for me to start was Reprap firmware doing a floating point divide in interrupt context while targeting AVR8 core…

Go to the marlin github https://github.com/MarlinFirmware/Marlin and download the latest stable or bugfix release. Also, download the configurations that match the version of the firmware you downloaded https://github.com/MarlinFirmware/Configurations

Just don't do this and you'll be fine - https://github.com/MarlinFirmware/Marlin/blob/bugfix-2.1.x/Marlin/src/core/macros.h

After some research, I stumbled upon a GitHub issue (https://github.com/MarlinFirmware/Marlin/issues/24281) that seemed to address a similar problem, but I can't quite pinpoint what triggers the "V86 stored setting" message in my case. I did notice that SuperSlicer includes the "G92 E0" command in the "Before layer change" section, so I'm wondering if that could be a potential culprit.

Was this the GitHub page you were talking about?

I managed to compile straight Marlin 2.1.2.1 successfully.

download Marlin firmware branch 0.2.x from https://github.com/MarlinFirmware/Marlin

/** * Marlin 3D Printer Firmware * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] * * Based on Sprinter and grbl. * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . * */ #pragma once /** * Sanguinololu board pin assignments */ /** * Rev B 26 DEC 2016 * * 1) added pointer to a current Arduino IDE extension * 2) added support for M3, M4 & M5 spindle control commands * 3) added case light pin definition */ /** * A useable Arduino IDE extension (board manager) can be found at * https://github.com/Lauszus/Sanguino * * This extension has been tested on Arduino 1.6.12 & 1.8.0 * * Here's the JSON path: * https://raw.githubusercontent.com/Lauszus/Sanguino/master/package_lauszus_sanguino_index.json * * When installing select 1.0.2 * * Installation instructions can be found at https://learn.sparkfun.com/pages/CustomBoardsArduino * Just use the above JSON URL instead of Sparkfun's JSON. * * Once installed select the Sanguino board and then select the CPU. */ #define ALLOW_MEGA644P #include "env_validate.h" #ifndef BOARD_INFO_NAME #define BOARD_INFO_NAME "Sanguinololu <1.2" #endif // // Limit Switches // #define X_STOP_PIN 18 #define Y_STOP_PIN 19 #define Z_STOP_PIN 20 // // Steppers // #define X_STEP_PIN 15 #define X_DIR_PIN 21 #define Y_STEP_PIN 22 #define Y_DIR_PIN 23 #define Z_STEP_PIN 3 #define Z_DIR_PIN 2 #define E0_STEP_PIN 1 #define E0_DIR_PIN 0 // // Temperature Sensors // #define TEMP_0_PIN 7 // Analog Input (pin 33 extruder) #define TEMP_BED_PIN 6 // Analog Input (pin 34 bed) // // Heaters / Fans // #define HEATER_0_PIN 13 // (extruder) #if ENABLED(SANGUINOLOLU_V_1_2) #define HEATER_BED_PIN 12 // (bed) #define X_ENABLE_PIN 14 #define Y_ENABLE_PIN 14 #define Z_ENABLE_PIN 26 #define E0_ENABLE_PIN 14 #if !defined(FAN_PIN) && ENABLED(LCD_I2C_PANELOLU2) #define FAN_PIN 4 // Uses Transistor1 (PWM) on Panelolu2's Sanguino Adapter Board to drive the fan #endif #else #define HEATER_BED_PIN 14 // (bed) #define X_ENABLE_PIN 4 #define Y_ENABLE_PIN 4 #define Z_ENABLE_PIN 4 #define E0_ENABLE_PIN 4 #endif #if !defined(FAN_PIN) && (MB(AZTEEG_X1, STB_11) || IS_MELZI) #define FAN_PIN 4 // Works for Panelolu2 too #endif

Grab the Sanguino Board plugin here - https://github.com/Lauszus/sanguino/zipball/master and extract to Desktop