BIGTREETECH SKR Mini E3 V2.0 Control Board 32Bit with TMC2209 UART Driver New Upgrade 3D Printer Parts Motherboard for Ender 3 V2, Ender3 Pro, Ender-3 Series 3D Printer

This Bigtreetech SKR mini E3 V.3 works really well. I replaced my stock Creality CR10 board with this Bigtreetech. It is easy to install and wire up, but the firmware gets tricky. It is set up with Marlin firmware for a Creality Ender 3 printer. The build dimensions are not the same as the Creality CR10. I basically spent a few days programming and tuning the firmware for my setup. Luckily there are CR10 files available. I have a BLtouch, a Microswiss direct drive extruder, and a few other custom features. I got it running well and I have to say that the stepper motors are so much smoother and quieter. It is a worthwhile upgrade as long as you are familiar with firmware upgrades. I used Virtual Studio Code to modify Marlin. I am sure there are other ways, but this was what I ended up using. If you are not familiar with Marlin then this upgrade is not for the faint of heart. But if you are somewhat familiar with programming languages, then go for it. There are a lot of helpful videos on the Internet.

This mainboard was by far the best upgrade to my Ender 3 Pro (MicroSwiss all-metal hotend is a close second). The TMC 2209 drivers make the steppers so quiet that I sometimes forget it is actually doing something (although there is the fan noise). The added space on the EEPROM was perfect for fitting all the features I wanted into my Marlin build (Linear Advance, Auto-Bed leveling, and Junction Deviation in particular). Not entirely sure why BIGTREETECH only lists 256KB...it is actually 512KB which allows me to compile 'bloaty' stuff (PIDBEDTEMP, M503, boot images, extra menu items for LCD, etc.) into the firmware and not have to worry about saving every last little byte.Installation wasn't difficult, but it was frustrating as Creality hot-glued everything to their stock board. Took a long time to get that stuff off without damaging anything. Came pre-loaded with a recent version of Marlin and was easy to flash to a custom build by simply dropping a 'firmeware.bin' file onto SD card and turning the printer on. A nice feature is that after it updates the firmware, it renames the file to 'firmware.cur' so it does not try to reflash every time you turn the printer on (the bootloader I flashed to my stock board didn't do this).BLTouch & Auto-Bed LevelingI did have some trouble configuring the firmware for ABL using the BLTouch at first. Most guides out there assume you are plugging into the Z-Stop on the board, but this board has the 5-pin header for BLTouch (which was convenient to build a 5-pin DuPont connector right to the board instead of separate 3-pin and 2-pin connectors). In your configuration.h, make sure that #define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN is commented out and that you are using #define USE_PROBE_FOR_Z_HOMING. One other thing I had to change was #define Z_MIN_PROBE_PIN PC14. PC14 is the Z-endstop pin from the 5-pin header. The pin set to this by default will not work. In configuration_adv.h, PROBE_OFFSET_WIZARD is a really handy menu option to help set the z-probe offset value. There are other minor things you have to change to get ABL to work, but all the guides out there cover that in great detail.The Instruction Manual does include a link to pre-compiled Marlin binaries for this board. I believe from that page the 'firmware-bltouch.bin' would have worked for me using the 5-pin Z-Probe header, however the webpage is unclear and I wanted more control over what features were in my firmware. Would be nice if they supplied the configuration.h and configuration_adv.h files for these builds so that users know what's in them.Extra StuffI bought the kit with the Mainboard, BLTouch and no touchscreen display.Be aware that the wires for the BLTouch probe are nowhere near long enough to reach your mainboard. You WILL have to do custom wiring or need to buy a BLTouch extension cable (1-meter should be long enough).This kit does NOT come with a bracket for the BLTouch either. I printed one out from Thingiverse and it works great, but if you prefer a metal bracket, you'll have to buy it separate from this.The kit does have appropriate screws/washers/springs to install the BLTouch.It is pretty clear in the description and pictures that it would not come with the bracket or long-enough cabling, however some folks might not notice or realize they need these things and be very disappointed.Overall a great board and an awesome upgrade that would really only be better if the documentation was more specific instead of a few pictures and incoherent sentences. In particular, configuring Marlin for BLTouch using this board's 5-pin header (notably the PC14 pin). Oddly, the BIGTREETECH configuration files specifically for this board on GitHub for Marlin do NOT have the pin defined as PC14. Despite a few challenges, this is still 5-stars all around because this upgrade is not designed for people who like for things to 'just work' or simple plug n' play. Go buy a more expensive printer if that is what you want.

Mi impresora es una ender 3 v2 Neo... Tenía la versión de Creality 4.2.2 y la verdad es que era lenta, muy lenta, si movía la ruedita muy rápido para ir a los mas alto (25cm) se inhibía y se reiniciaba haciendo un homing de nuevo, tenía que avanzar lento para que no se reinicie, ahora que instalé la SKR Mini E3 V3.0, hice una prueba de stress moviendo la ruedita a la mayor velocidad posible para que suba a lo mas alto y para mi sorpresa cumplió a cabalidad mi orden sin inmutarse ni chistar, definitivamente en esta pequeña prueba me doy cuenta que esta placa es muuucho mejor que la 4.2.2 original de creality, que de por si vino con un firmware deplorable y asqueroso, simple como si para un niño fuese dedicada, ya con mi anterior placa use el firmware de MriscoC en github, no se si pueda pegar el link aquí pero realmente ese firmware te cambia la vida con tantas opciones y el autoleveling es otro nivel de calibración, lo hace a mas de 9 puntos sobre la base y la pantalla indica todo, una maravilla.Aun no imprimo nada, pero solo la prueba de estrés que hice es suficiente para esperar lo mejor de esta placa junto al firmware profesional de MriscoC que me parece la mejor combinación. Ya luego evolucionaré a ponerle un sprite direct extruder de Creality que ya compré y me llega vía courier a mi país en varios días, para eso tendré que hacer uso de las configuraciones espciales que MriscoC tiene en su página donde podré subirle la temperatura al hotend para poder imprimir TPU y demás filamentos especiales.Problemas:Si... como tenía el firmware anterior, al poner la placa la pantalla (dacai) de mi impresora, esta emitía un pitido constante e infinito que hasta me hizo pensar en devolver la placa y comprarme la versión 4.2.7, pero a sabiendas de que en estas impresoras nada es plug and play y que si no calza pues se imprime y se hace calzar por las buenas o las malas, logré hacerla funcionar instalando quizá sin éxito el firmware que propone Bigtreetech en su página oficial de github, luego instalé el firmware del LCD stock de fábrica original de creality que MriscoC tiene en su página como respaldo y luego instalé el firmware de MriscoC y todo función de maravilla, al final instalé los assets de nuevo de la LCD con los ínconos personalizados y me va de maravilla todo, una pasada increíble. Ya mañana viene la prueba de fuego imprimiendo cosas, porque me he quedado hasta las 3am haciendo la instalación y demás.Advertencias:Si... Vas a necesitar un set de pines donde haya uno de dos patitas para conectar el pin del hotend, yo lo tuve que conectar a la placa directamente en la energía, por lo que está constantemente encendida y se pierde el efecto silencioso donde el ventilador se apaga si la máquina está en reposo, además de las ventajas de optimización automática de flujo de aire (460PCS JST XH2.54 Connector kit 2/3/4/5/6Pin Plug with Terminal Wires Cables Socket Header Wire Connectors Kit).