FLY E3 PRO Ultra Control Board

The FLY E3 PRO Ultro motherboard features a high‑performance 550 MHz STM32H7‑series processor, engineered for high‑speed 3D printing, with native support for both Klipper and RepRapFirmware. It comes equipped with five onboard TMC2209 drivers to suit various DIY requirements. The board is compatible with the official RRF Wi‑Fi module, enabling web‑based control, online firmware updates, and ultra‑fast file transfers of up to 1.6 MB/s. Its mounting holes match those of the Ender‑3 exactly, so it can be installed as a direct replacement, and it supports both 12864 and serial‑port LCD screens. For Klipper and RRF setups alike, it also supports the popular CAN‑bus communication standard, providing more stable performance and flexible expansion.

• 32-bit ARM Cortex-M4 series 550 MHz, STM32H723VGT6 chip
• Firmware: Reprap/Klipper
• Five TMC2209 drivers on board, XYZ 3 driver positions support infinite bit mode
• Display: serial touch screen, mini12864 LCD, 12864 LCD, 2004 LCD, FLY 4.3/7.0 V1
• 1*IN port, supports automatic bed levelling sensors: BLTouch, PL08N and other proximity sensors, Klicky, Voron Tap, etc.
• Using repap firmware, you can use ESP32 WiFi module, support 1.6m/s
• Unique PWM Fan MOS board design, damaged can be directly replaced, reducing the difficulty of customer repair, four 2-pin fan interfaces
• 3*ADC interfaces for temperature sensors, 3 limit ports can be connected to limit switches
• 4*IO ports can be used for proximity switches, limit switches, laser heads, RGB lights, etc.
• 3*heating ports
• 1*serial screen port for RRF
• Max version supports 1*K-type thermocouple and 1*PT100 temperature sensor
• Newly added DIP switch for 2/3/4-wire mode selection of Pt100 temperature sensor
• New integrated heat sink to increase the heat sink area when driving
• New CAN port

Compatible

Ender 3, Ender 3 pro, Ender 5, Ender 5 pro, Blv, Voron0, DIY 3D Printer

RRF reference & Klipper reference