The Fly Micro 4 is a compact 3D printer motherboard with four 2209 drivers supporting sensorless homing. It includes heating and temperature measurements for both the print head and the heated bed. It can use BLTouch and metal proximity switches for automatic bed levelling. With a CAN interface, it can connect to CAN tool boards. The four end-stop connections fulfil the basic requirements for a 3D printer, making it suitable for DIY projects or converting existing machines.
MCU: Raspberry Pi RP2040, Dual Core ARM Cortex-M0+ @ 133MHz
Firmware: Klipper
Supports 12-24V DC power input, providing more stable power and eliminating the need for a step-down module.
Driver operating modes: UART, STEP/DIR
Expansion interfaces: BLTouch (Servos, Probe), Proximity Switch X1
Fans: Two controllable 2-wire fans, One always-on fan
Temperature sensors: 2 NTC 100K channels
Heating interfaces: 2 controllable interfaces supporting 10A
Klipper firmware refer to this URL
mellow.klipper.cn
Web generation machine configuration, do not need to know programming
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