Pinout
- This page lists the pinout of the FLY-Super8 Pro motherboard after flashing Klipper firmware. Pin numbers are based on the motherboard schematic.
UART/CSis the driver communication pin: when using TMC2209, it functions as UART; when using SPI drivers like TMC5160, it serves as the chip selectCS. The same pin is multiplexed.ENis the enable pin. In Klipper configuration, it is typically active-low (with!prefix inenable_pin).DIAGis the driver diagnostic signal pin. When using sensorless homing, configure the correspondingdiag_pinaccording to the table below. Some drivers may still require setting the DIAG jumper as noted.
Interactive Pin Hotspots
The image below uses the FLY-Super8 Pro product image and the same hotspot data from the Klipper configuration generator. Use the device filters above to show only compatible connectors; click a hotspot to see compatible devices, common Klipper configuration sections, and notes. Use “Locate in pin table” in the detail panel to jump to and highlight the corresponding row below. Hover still shows the connector name and pin. Always verify the silkscreen and connector positions against the physical board and schematic.
Hover to see the pin; click a hotspot to view compatible devices and configs. Pins can be copied from the detail panel, except for driver connectors.
Driver Pins
The FLY-Super8 Pro provides 8 driver ports:
| Driver | STEP | DIR | EN | UART/CS | DIAG |
|---|---|---|---|---|---|
| DRIVER0 | PE2 | PC5 | PF11 | PC4 | PG12 |
| DRIVER1 | PE3 | PF13 | PF14 | PF12 | PG11 |
| DRIVER2 | PE4 | PG0 | PG1 | PF15 | PG10 |
| DRIVER3 | PE14 | PE8 | PE9 | PE7 | PG9 |
| DRIVER4 | PE15 | PE11 | PF2 | PE10 | PD7 |
| DRIVER5 | PE1 | PF0 | PC15 | PF1 | PD6 |
| DRIVER6 | PE0 | PG3 | PG4 | PG2 | PA8 |
| DRIVER7 | PE6 | PG6 | PG7 | PG5 | PF3 |
Before starting, completely shut down the printer and disconnect the power supply. Do not plug or unplug wiring harnesses, organize connector wiring, or touch terminals while the power is on.
When using sensorless homing, the driver chip outputs the stall detection signal through the DIAG pin, which Klipper needs to read via a corresponding input port. The correspondence between DIAG and the endstop ports on this motherboard is as follows:
- DRIVER0–6: DIAG is directly connected to the corresponding endstop input port on the MCU (DRIVERn → Endstop port n). There are no DIAG jumper pins on the board, and the DIAG signal always reaches the MCU. To enable sensorless homing, simply configure the corresponding endstop port pin as
diag_pin. Do not connect a physical endstop switch to this endstop port. - DRIVER7: DIAG is not directly connected to an endstop port. You must manually install the adjacent DIAG jumper cap to route the DIAG signal to PF3 (DIAG shared pin) before sensorless homing can be used.
Once sensorless homing is enabled, the corresponding endstop port is occupied by the DIAG signal and must not be connected to a mechanical or optical endstop switch simultaneously.
SPI Bus
SPI drivers like the TMC5160 use the motherboard's hardware SPI bus. Configure spi_bus: spi1a in the configuration; there is no need to configure 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 Guide
Endstops and Probe
| Function | Pin | Corresponding Driver DIAG |
|---|---|---|
| Endstop port 0 / IO0 | PG12 | DRIVER0 |
| Endstop port 1 / IO1 | PG11 | DRIVER1 |
| Endstop port 2 / IO2 | PG10 | DRIVER2 |
| Endstop port 3 / IO3 | PG9 | DRIVER3 |
| Endstop port 4 / IO4 | PD7 | DRIVER4 |
| Endstop port 5 / IO5 | PD6 | DRIVER5 |
| Endstop port 6 / IO6 | PA8 | DRIVER6 |
| HV-IN / Generic Input | PF3 | DRIVER7 |
| IN / PWM_OUT | PF8 | - |
| Probe | PC3 | - |
For wiring of micro switches, optical endstops, proximity sensors, and TAP, see: Endstop Wiring Guide
Heaters
| Function | Pin |
|---|---|
| Heated Bed | PE5 |
| Heater port 0 | PB0 |
| Heater port 1 | PB1 |
| Heater port 2 | PC7 |
| Heater port 3 | PF7 |
| Heater port 4 | PF6 |
Temperature Sensors
| Function | Pin |
|---|---|
| Thermistor port 0 | PF4 |
| Thermistor port 1 | PF5 |
| Thermistor port 2 | PF9 |
| Thermistor port 3 | PF10 |
| Thermistor port 4 | PC0 |
| Thermistor port 5 | PC1 |
The thermistor ports support NTC thermistors (100K) by default, with sensor_type recommended as Generic 3950; they also support 2-wire PT1000, configured by setting sensor_type to PT1000.
List of
sensor_typeoptions that can be directly connected internally by Klipper and their applicable scenarios: Thermistor Configuration Method
K-type thermocouples, 3-wire PT100, etc., require additional signal conditioning chips and cannot be connected directly to the thermistor ports.
Fans
| Function | Pin |
|---|---|
| Fan port 0 | PA0 |
| Fan port 1 | PA1 |
| Fan port 2 | PA2 |
| Fan port 3 | PA3 |
| Fan port 4 | PA15 |
| Fan port 5 | PB11 |
| Fan port 6 | PB10 |
| Fan port 7 | PD12 |
| Fan port 8 | PD14 |
| Fan port 9 | PD15 |
PWM
The FLY-Super8 Pro provides 2 PWM outputs, suitable for servos, fan speed control, etc.:
| Pin | Remark |
|---|---|
| PC6 | Servo / BLTouch control |
| PF8 | IN / PWM_OUT |
BL-Touch
| Function | Pin |
|---|---|
| Servo signal | PC6 |
| Probe signal | PC3 |
EXP Connectors
- The EXP headers are commonly used for screens like the Mini12864 or other expansion peripherals.
- If a pin is already used by SPI, UART, endstop, fan, or other functions, do not configure it again in the EXP peripheral settings.
EXP1
| Function | Pin |
|---|---|
| EXP1_1 | PE12 |
| EXP1_2 | PE13 |
| EXP1_3 | PB2 |
| EXP1_4 | PG8 |
| EXP1_5 | PC14 |
| EXP1_6 | PC13 |
| EXP1_7 | PG14 |
| EXP1_8 | PG13 |
| EXP1_9 | GND |
| EXP1_10 | 5V |
EXP2
| Function | Pin |
|---|---|
| EXP2_1 | PA6 |
| EXP2_2 | PA5 |
| EXP2_3 | PB7 |
| EXP2_4 | PA4 |
| EXP2_5 | PB6 |
| EXP2_6 | PA7 |
| EXP2_7 | PG15 |
| EXP2_8 | RST |
| EXP2_9 | GND |
| EXP2_10 | NC |