Product Description BTT SKR V1.4 32-bit Silent Motherboard 1. ARM Cortex-M3 CPU 2. DIY interface(I2C,SPI,WIFI Double z-axis)  3. Motor drive interface(X,Y,Z,E0,E1)4.Thermistor interface BTT B1 TFT35 V3.0 Dual Operation System 1. Dual operating system2. Real-time monitoring of data during printing3. Multi-select printing mode4. G code5. Mode preview effect BIQU SSS (Super Spring Steel) 1. The model is easy to stick and easy to take away.2. BIQU SSS plus soft magnetic patch enables stable printing.3. Both side can be used. Filament Sensor The printer will automatically pause a print if filaments was detected broken, which will help detect printing problems and save time. Multi-color RGB lights The RGB Light is bulit in the hotend, and there are four colors for you to choose. Even you can see the print status at the night. More Details & Notes 1. The Type-C line can only be replaced by BIQU cutomized Type-C line, other lines are not suitable.2. The BL Touch holder is included(BL Touch is not).3. Two more interfaces for smart filament sensor and BL Touch. Dimensions & Specs Product name BIQU B1 3D Printer Printing Size 235*235*270mm Molding Tech FDM (Fused Deposition Modeling) Printing Accuracy ±0.05mm Filament PLA, ABS, PETG Slicing Format STL, OBJ, AMF Connecting Method Via data cable, TF card, USB Max Print Speed 100mm/s Leveling Manual Working mode Offline or online Motor Accuracy ±0.1 Language English, French, Spanish, Italian,etc. Power Supply 24V Screen BTT B1 TFT35 V3.0 Control Board BTT SKR V1.4 Quick View Relavant Files Manual Upgradeable Hardware SKR V1.4 Control Board Learn more B1 TFT35 V3.0 Screen Learn more BIQU B1 dual z upgrade kit Learn more BIQU B1 two-in-one-out dual-color printing upgrade kit Learn more FAQ Q1, Does the machine support connecting to a computer for printing? It supports a computer, also you can print by U disk and TF card. Q2, Is the printer with dual Z-axis? No, it's a single screw structure. Q3, How many languages does the printer supports? It has 15 languages, including English, 简体中文, Русский, 日本語, Հայերեն, Deutsch, Čeština, Español, français, Portugues, Italiano, Polski, Slovensky, Dutch, Magyar. Q4, Where can I download the firmware and how to upgrade the firmware? Please go to the github center to find the latest firmware: https://github.com/bigtreetech/BIQU-B1 And here is a guide video to burn firmware. https://www.youtube.com/watch?v=-dwfWrqbtio Q5, Can the printer automatically shut down after printing? The machine does not have a "shutdown module after printing" by default, so it cannot be automatically shut down.