Introduction

1. Product Overview

The FLY TOOL-LITE-232 is a tool board designed by Guangzhou Meilun Electronic Technology Co., Ltd. for 3D printers. This tool board provides XT30/KF interfaces, allowing the replacement of the complex wiring between the mainboard and the print head with just four wires, optimizing the layout. The TOOL-LITE-232 is suitable for 36/42 stepper motors and integrates an RS232 transceiver, Type-C port, TMC2209 driver, LIS2DW accelerometer, two controllable fans, and other features. This tool board is compatible with the Klipper firmware.

4. Product Categories

TOOL-LITE	TOOL-LITE-232	TOOL-LITE-CAN
Klipper CANBus	❌	✅
Klipper RS232	✅	❌
RRF CANBus	❌	❌
LIS2DW	✅	✅
MAX31865	❌	❌

1.1 Product Features

• Reserved Boot button, allowing users to enter Boot mode via Type-C for firmware updates.
• Supports Klipper firmware.
• Supports RS232 mode.
• In RS232 mode, it offers higher transmission rates and stronger stability.
• Temperature sensor support: NTC100K and PT1000 temperature sensors.
• Supports two controllable fan channels with a maximum output current of 1A.
• Onboard LIS2DW accelerometer.
• Reserved high-voltage probe interface, onboard 2209 driver, supporting various leveling sensors such as BLtouch, Klicky, Voron Tap, PL08n, etc.
• Supports 12-24V voltage, 15A current input, with an enlarged heating rod port rated at 10A.

1.2 New Features

• Added RS232 mode, providing higher transmission rates, stronger stability, and simpler debugging and usage.
• Added a 1-meter power/signal cable with a twisted-pair design for enhanced anti-interference performance.

1.3 Product Specifications

• MCU: Raspberry Pi RP2040, Dual-core ARM Cortex-M0+ @133MHz.
• Connection interface uses XT30 (2+2) connectors supporting 15A current, peak 30A.
• Firmware: Klipper.
• Input voltage: DC 12V-24V.
• Logic voltage: DC 3.3V.
• Onboard sensor: LIS2DW.
• Heating rod interface: Heating rod (HEAT0), 10A.
• Expansion interfaces: High-voltage probe interface, EndStop, PT100/PT1000, XH2.54-2P CAN expansion port.
• Fan interface: Two DC controllable fan channels.
• Motor driver: Onboard TMC2209.
• Temperature sensor: One channel for 100K NTC or PT1000 (TH0).

Product Notes

Output Port	Maximum Current at 24V Power	Maximum Current at 12V Power
Heating Port	5A	2.5A
Fan Port	1A	0.5A