Pinout

Note

• This page lists the pinout of the FLY-F407ZG motherboard after flashing Klipper firmware. Pin numbers are based on the motherboard schematic.
• UART/CS is the driver communication pin: used as UART with TMC2209, and as chip select CS with SPI drivers such as TMC5160. The same pin is shared for both functions.
• EN is the enable pin. In Klipper configuration, it is typically active low (with ! prefix in enable_pin).
• The driver sockets on the FLY-F407ZG do not provide DIAG mappings that can be directly used for Klipper sensorless homing. The regular IOs listed below are intended for endstops or general-purpose inputs only.

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Driver Pins

The FLY-F407ZG provides 9 driver sockets:

Driver	STEP	DIR	EN	UART/CS	DIAG
DRIVER0	PB9	PE0	PE1	PG13	-
DRIVER1	PB8	PG11	PG12	PG10	-
DRIVER2	PA8	PD6	PD7	PD5	-
DRIVER3	PC7	PD3	PD4	PD1	-
DRIVER4	PC6	PA15	PD0	PA14	-
DRIVER5	PD15	PG7	PG8	PG6	-
DRIVER6	PD14	PG4	PG5	PG3	-
DRIVER7	PD13	PD11	PG2	PD10	-
DRIVER8	PD12	PD8	PD9	PB12	-

DIAG and Sensorless Homing

Neither the pinout diagram nor the reference configuration for the FLY-F407ZG provides a mapping from the driver DIAG pins to the MCU input pins. Therefore, the DIAG column in the driver table is marked as -.

The IO0-IO7 pins listed below are independent regular endstop / general-purpose inputs. They are not driver DIAG signals. Do not use these regular IOs directly as diag_pin for any driver when configuring Klipper.

SPI Bus

SPI drivers such as the TMC5160 use the motherboard's hardware SPI bus. Configure spi_bus: spi1a in the configuration. There is no need to configure the MOSI/MISO/SCLK pins separately:

[tmc5160 stepper_x]
spi_bus: spi1a
cs_pin: Corresponding driver's UART/CS pin

Detailed information on software SPI and SPI speed: SPI Configuration Method

Endstops and Probe

Function	Pin	Corresponding Driver DIAG
Endstop 0 / IO0	PC3	-
Endstop 1 / IO1	PC2	-
Endstop 2 / IO2	PF2	-
Endstop 3 / IO3	PF1	-
Endstop 4 / IO4	PF0	-
Endstop 5 / IO5	PC15	-
Endstop 6 / IO6	PC14	-
Endstop 7 / IO7	PA3	-

Heaters

Function	Pin
Heated Bed	PE2
Heater 0	PF7
Heater 1	PF6
Heater 2	PE6
Heater 3	PE5
Heater 4	PE4
Heater 5	PE3

Temperature Sensors

Function	Pin
Bed Thermistor	PF3
Thermistor 0	PA0
Thermistor 1	PC1
Thermistor 2	PC0
Thermistor 3	PF10
Thermistor 4	PF5
Thermistor 5	PF4

Supported Thermistor Types

The thermistor ports support NTC thermistors (100K) by default. It is recommended to set sensor_type to Generic 3950.

List of built-in sensor_type options available in Klipper and their applicable scenarios: Thermistor Configuration Method

K-type thermocouples, PT100, etc., require additional signal conversion chips and cannot be connected directly to the thermistor ports.

Fans

Function	Pin
Fan 0	PF8
Fan 1	PF9
Fan 2	PA2
Fan 3	PA1
Fan 4	PE13
Fan 5	PB11

PWM

The FLY-F407ZG provides 1 PWM output, which can be used for servos, fan speed control, etc.:

Pin	Notes
PE11	Servo / BLTouch control