Are you in Australia and seeking to buy a BigTreeTech BTT Octopus Max EZ for your 3D printer? The BIGTREETECH Octopus MAX EZ is a 32 - bit motherboard. It's an upgraded version of the Octopus Pro, developed by the 3D printing team of Shenzhen Big Tree Technology Co., Ltd. With self - developed stepper motor sockets, it offers better safety and user experience. It also comes with features the Octopus Pro lacks, boosting DIY capabilities. Key features include a 32 - bit 550 MHz ARM Cortex - M7 series STM32H723ZET6 MCU. There's an onboard BOOT button for DFU mode to update the bootloader. The thermistor circuit is protected to prevent MCU damage. You can select voltages (24V, 12V, 5V) for the CNC fan, avoiding external step - down and protecting the board from user errors. It has eFuse protection, responding fast and protecting the motherboard from short circuits, over - current, etc. You can upgrade the MCU firmware via SD card or DFU using Klipper's make flash command. There are 10 EZ driver sockets for pinless drivers, safer to use, and onboard SPI and UART that you can set in the firmware without a jumper. It supports power loss recovery, filament runout sensor, CAN, auto power - off, BL Touch, RGB, etc. The replaceable fuse makes maintenance easy. There are 3 x 4 pins fan ports for water cooling. The onboard proximity switch port supports NPN and PNP types with selectable voltages. An onboard SPI interface connects an acceleration sensor for Klipper's input shaping.
Using the BigTreeTech BTT Octopus Max EZ for your 3D printer is quite straightforward. First, make sure to connect all the components properly according to the pinout diagram. When powering it on, choose the appropriate voltage for the CNC fan. You can update the firmware either via an SD card or by using the DFU method with Klipper's make flash command. If you want to enable some features like Klipper's input shaping, connect an acceleration sensor to the onboard SPI interface. For maintenance, if there's an issue with the power, check the replaceable fuse. If it's blown, simply replace it. Be careful when connecting the heated bed and heater cartridge to avoid short - circuits that could damage the MCU. When setting up the EZ driver sockets, no need to worry about jumpers, just configure the settings in the firmware. And always ensure proper ventilation, especially if you're using the water - cooling system connected to the 3 x 4 pins fan ports.
