Supported Motherboards & Wiring Guide
Note
To simplify wiring, I recommend picking up an SKR Extension Cable Kit which converts Prusa's wiring to JST connectors (not needed for BTT002).
Important
Prusa MK2.5S users must swap to a 12V hotend cooling fan (4010) since the stock fan is 5V. Stock parts cooling fan (5015) is 12V, so that should work without an issue.
Source: SKR V3.0 EZ Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
PB3 (HE0) |
| Bed Heater |
PD7 (BED) |
| Hotend Thermistor |
PA2 (TH0) |
| Bed Thermistor |
PA1 (TB) |
| Hotend Cooling Fan |
PB6 (FAN1) |
| Part Cooling Fan |
PB7 (FAN0) |
| Motherboard Fan (Optional) |
PB5 (FAN2) |
| PINDA V2 / SuperPINDA |
PC13 (Probe) |
| PINDA V2 Thermistor |
PA3 (TH1) |
| PINDA 5V | (5V pin in PWRDET)* |
| BLTouch |
PE5 + PC13 (SERVOS + Probe) |
| Filament Runout |
PC2 (E0DET) |
| NeoPixels / RGB |
PE6 (RGB) |
| X Motor | (XM) |
| Y Motor | (YM) |
| Z1 Motor | (ZAM) |
| Z2 Motor | (E1M) |
| Extruder Motor | (E0M) |
Note
* PINDA 5V source can be any available/unused 5V pin
Important
Prusa MK3/S/+: Motherboard DIAG jumpers must be installed for X & Y and removed for Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Prusa MK2.5S: Motherboard DIAG jumpers must be removed for X, Y, Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Source: SKR V3.0 Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
PB3 (HE0) |
| Bed Heater |
PD7 (BED) |
| Hotend Thermistor |
PA2 (TH0) |
| Bed Thermistor |
PA1 (TB) |
| Hotend Cooling Fan |
PB6 (FAN1) |
| Part Cooling Fan |
PB7 (FAN0) |
| Motherboard Fan (Optional) |
PB5 (FAN2) |
| PINDA V2 / SuperPINDA |
PC13 (Probe) |
| PINDA V2 Thermistor |
PA3 (TH1) |
| PINDA 5V | (5V pin in PWRDET)* |
| BLTouch |
PE5 + PC13 (SERVOS + Probe) |
| Filament Runout |
PC2 (E0DET) |
| NeoPixels / RGB |
PE6 (RGB) |
| X Motor | (XM) |
| Y Motor | (YM) |
| Z1 Motor | (ZAM) |
| Z2 Motor | (E1M) |
| Extruder Motor | (E0M) |
Note
* PINDA 5V source can be any available/unused 5V pin
Important
Prusa MK3/S/+: Motherboard DIAG jumpers must be installed for X & Y and removed for Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Prusa MK2.5S: Motherboard DIAG jumpers must be removed for X, Y, Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Source: SKR V2.0 Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
PB3 (HE0) |
| Bed Heater |
PD7 (BED) |
| Hotend Thermistor |
PA2 (TH0) |
| Bed Thermistor |
PA1 (TB) |
| Hotend Cooling Fan |
PB6 (FAN1) |
| Part Cooling Fan |
PB7 (FAN0) |
| Motherboard Fan (Optional) |
PB5 (FAN2) |
| PINDA V2 / SuperPINDA |
PE4 (Probe) |
| PINDA V2 Thermistor |
PA3 (TH1) |
| PINDA 5V | (5V pin in PWRDET)* |
| BLTouch |
PE5 + PE4 (SERVOS + Probe) |
| Filament Runout |
PC2 (E0DET) |
| NeoPixels / RGB |
PE6 (RGB) |
| X Motor | (XM) |
| Y Motor | (YM) |
| Z1 Motor | (ZMA) |
| Z2 Motor | (E1M) |
| Extruder Motor | (E0M) |
Note
* PINDA 5V source can be any available/unused 5V pin
Important
Prusa MK3/S/+: Motherboard DIAG jumpers must be installed for X & Y and removed for Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Prusa MK2.5S: Motherboard DIAG jumpers must be removed for X, Y, Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Source: SKR V1.4 Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
P2.7 (HE0) |
| Bed Heater |
P2.5 (BED) |
| Hotend Thermistor |
P0.24 (TH0) |
| Bed Thermistor |
P0.25 (TB) |
| Hotend Cooling Fan |
P2.4 (HE1) |
| Part Cooling Fan |
P2.3 (FAN0) |
| PINDA V2 / SuperPINDA |
P0.10 (Probe) |
| PINDA V2 Thermistor |
P0.23 (TH1) |
| PINDA 5V | (5V pin in PWRDET)* |
| BLTouch |
P2.0 + P0.10 (SERVOS + Probe) |
| Filament Runout |
P1.26 (E0DET) |
| NeoPixels / RGB |
P1.24 (NeoPixel) |
| X Motor | (XM) |
| Y Motor | (YM) |
| Z1 Motor | (ZMA) |
| Z2 Motor | (E1M) |
| Extruder Motor | (E0M) |
Note
* PINDA 5V source can be any available/unused 5V pin
Important
Prusa MK3/S/+: Driver DIAG pins must be cut or desoldered from Z, Z2 (E1), & E0 drivers or homing and filament runout will not work correctly.
Prusa MK2.5S: Driver DIAG pins must be cut or desoldered from X, Y, Z, Z2 (E1), & E0 drivers or homing and filament runout will not work correctly.
Source: SKR V1.3 Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
P2.7 (HE0) |
| Bed Heater |
P2.5 (BED) |
| Hotend Thermistor |
P0.24 (TH0) |
| Bed Thermistor |
P0.23 (TB) |
| Hotend Cooling Fan |
P2.4 (HE1) |
| Part Cooling Fan |
P2.3 (FAN) |
| PINDA V2 / SuperPINDA |
P1.25 (Z-) |
| PINDA V2 Thermistor |
P0.25 (TH1) |
| PINDA 5V | (5V pin in Z+)* |
| BLTouch |
P2.0 + P1.25 (SERVOS + Z-) |
| Filament Runout |
P1.28 (X+) |
| X Motor | (X) |
| Y Motor | (Y) |
| Z1 Motor | (Z) |
| Z2 Motor | (E1) |
| Extruder Motor | (E0) |
Note
* PINDA 5V source can be any available/unused 5V pin
Important
Prusa MK3/S/+: Motherboard DIAG jumpers must be installed for X & Y and removed for Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Prusa MK2.5S: Motherboard DIAG jumpers must be removed for X, Y, Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Source: BTT002 V1.0 Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
PE6 (HE) |
| Bed Heater |
PE5 (BED OUT) |
| Hotend Thermistor |
PA2 (T0) |
| Bed Thermistor |
PA1 (T2) |
| Hotend Cooling Fan |
PB9 (FAN0) |
| Part Cooling Fan |
PB8 (FAN1) |
| PINDA V2 / SuperPINDA |
PD1 (Z-PROBE) |
| PINDA V2 Thermistor |
PC3 (Shared with Z-PROBE) |
| PINDA 5V | (Shared with Z-PROBE) |
| BLTouch | N/A |
| Filament Runout |
PA15 (Shared with EXP3) |
| NeoPixels / RGB | N/A |
| X Motor | (XM) |
| Y Motor | (YM) |
| Z1 Motor | (ZAM) |
| Z2 Motor | (ZBM) |
| Extruder Motor | (EM) |
Important
Prusa MK3/S/+: Driver DIAG pins must be cut or desoldered from Z & E drivers or homing and filament runout will not work correctly.
Prusa MK2.5S: Driver DIAG pins must be cut or desoldered from X, Y, Z, & E drivers or homing and filament runout will not work correctly.
Source: SKR Mini E3 V3.0 Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
PC8 (E0) |
| Bed Heater |
PC9 (HB) |
| Hotend Thermistor |
PA0 (TH0) |
| Bed Thermistor |
PC4 (THB) |
| Hotend Cooling Fan |
PC7 (FAN1) |
| Part Cooling Fan |
PC6 (FAN0) |
| Motherboard Fan (Optional) |
PB15 (FAN2) |
| SuperPINDA |
PC14 (Shared with Z-PROBE) |
| SuperPINDA 5V | (Shared with Z-PROBE) |
| BLTouch |
PA1 + PC14 (Shared with Z-PROBE) |
| Filament Runout |
PC15 (E0-STOP) |
| NeoPixels / RGB |
PA8 (Neo-PWR1) |
| X Motor | (XM) |
| Y Motor | (YM) |
| Z1 Motor | (ZAM) |
| Z2 Motor | (ZBM) |
| Extruder Motor | (EM) |
Important
Prusa MK3/S/+: Motherboard DIAG jumpers must be installed for X & Y and removed for Z & E or homing and filament runout will not work correctly.
Prusa MK2.5S: Motherboard DIAG jumpers must be removed for X, Y, Z, & E or homing and filament runout will not work correctly.
Source: SKR Mini E3 V3.0.1 Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
PA15 (E0) |
| Bed Heater |
PB3 (HB) |
| Hotend Thermistor |
PC5 (TH0) |
| Bed Thermistor |
PC4 (THB) |
| Hotend Cooling Fan |
PA8 (FAN1) |
| Part Cooling Fan |
PC9 (FAN0) |
| Motherboard Fan (Optional) |
PC8 (FAN2) |
| SuperPINDA |
PA1 (Shared with Z-PROBE) |
| SuperPINDA 5V | (Shared with Z-PROBE) |
| BLTouch |
PA0 + PA1 (Shared with Z-PROBE) |
| Filament Runout |
PC15 (E0-STOP) |
| NeoPixels / RGB |
PA14 (RGB-PWR1) |
| X Motor | (XM) |
| Y Motor | (YM) |
| Z1 Motor | (ZAM) |
| Z2 Motor | (ZBM) |
| Extruder Motor | (EM) |
Important
Prusa MK3/S/+: Motherboard DIAG jumpers must be installed for X & Y and removed for Z & E or homing and filament runout will not work correctly.
Prusa MK2.5S: Motherboard DIAG jumpers must be removed for X, Y, Z, & E or homing and filament runout will not work correctly.
Source: SKR Mini E3 V2.0 Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
PC8 (E0) |
| Bed Heater |
PC9 (HB) |
| Hotend Thermistor |
PA0 (TH0) |
| Bed Thermistor |
PC3 (THB) |
| Hotend Cooling Fan |
PC7 (FAN1) |
| Part Cooling Fan |
PC6 (FAN0) |
| SuperPINDA |
PC14 (Shared with Z-PROBE) |
| SuperPINDA 5V | (Shared with Z-PROBE) |
| BLTouch |
PA1 + PC14 (Shared with Z-PROBE) |
| Filament Runout |
PC15 (E0-STOP) |
| NeoPixels / RGB |
PA8 (NEOPIXEL) |
| X Motor | (XM) |
| Y Motor | (YM) |
| Z1 Motor | (ZAM) |
| Z2 Motor | (ZBM) |
| Extruder Motor | (EM) |
Important
Prusa MK3/S/+: Motherboard DIAG jumpers must be installed for X & Y and removed for Z & E or homing and filament runout will not work correctly.
Prusa MK2.5S: Motherboard DIAG jumpers must be removed for X, Y, Z, & E or homing and filament runout will not work correctly.
Source: Robin Nano V3.0 Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
PE5 (HE0) |
| Bed Heater |
PA0 (H-BED) |
| Hotend Thermistor |
PC1 (TH1) |
| Bed Thermistor |
PC0 (TB) |
| Hotend Cooling Fan |
PB1 (FAN2) |
| Part Cooling Fan |
PC14 (FAN1) |
| Motherboard Fan (Optional) |
PB0 (HE1) |
| PINDA V2 / SuperPINDA |
PC8 (Z-) |
| PINDA V2 Thermistor |
PA2 (TH2) |
| PINDA 5V | (5V pin in Z- or Z+)* |
| BLTouch |
PA8 + PC8 (BLTouch + Z-) |
| Filament Runout |
PA4 (MT_DET1) |
| NeoPixels / RGB | N/A |
| X Motor | (X) |
| Y Motor | (Y) |
| Z1 Motor | (Z1) |
| Z2 Motor | (E1) |
| Extruder Motor | (E0) |
Note
* PINDA 5V source can be any available/unused 5V pin
Important
Prusa MK3/S/+: Motherboard DIAG jumpers must be installed for X & Y and removed for Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Prusa MK2.5S: Motherboard DIAG jumpers must be removed for X, Y, Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Source: Eagle V1.0 Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
PE5 (HE0) |
| Bed Heater |
PA0 (H-BED) |
| Hotend Thermistor |
PC1 (TH1) |
| Bed Thermistor |
PC0 (TB) |
| Hotend Cooling Fan |
PB1 (FAN2) |
| Part Cooling Fan |
PC14 (FAN1) |
| Motherboard Fan (Optional) |
PB0 (HE1) |
| PINDA V2 / SuperPINDA |
PC8 (Z-) |
| PINDA V2 Thermistor |
PA2 (TH2) |
| PINDA 5V | (5V pin in Z- or Z+)* |
| BLTouch |
PA8 + PC8 (BLTouch + Z-) |
| Filament Runout |
PA4 (MT_DET1) |
| NeoPixels / RGB | N/A |
| X Motor | (X) |
| Y Motor | (Y) |
| Z1 Motor | (Z1) |
| Z2 Motor | (E1) |
| Extruder Motor | (E0) |
Note
* PINDA 5V source can be any available/unused 5V pin
Important
Prusa MK3/S/+: Motherboard DIAG jumpers must be installed for X & Y and removed for Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Prusa MK2.5S: Motherboard DIAG jumpers must be removed for X, Y, Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Source: SGEN_L V2.0 Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
P2.7 (HE0) |
| Bed Heater |
P2.5 (BED) |
| Hotend Thermistor |
P0.23 (TH1) |
| Bed Thermistor |
P0.24 (TB1) |
| Hotend Cooling Fan |
P1.4 (FAN2) |
| Part Cooling Fan |
P2.4 (FAN1) |
| Motherboard Fan (Optional) |
P2.6 (HE1) |
| PINDA V2 / SuperPINDA |
P1.25 (Z-) |
| PINDA V2 Thermistor |
P0.25 (TH2) |
| PINDA 5V | (5V pin in Z- or Z+)* |
| BLTouch |
P1.24 + P1.25 (SERVO + Z-) |
| Filament Runout |
P1.28 (X+) |
| NeoPixels / RGB | N/A |
| X Motor | (X) |
| Y Motor | (Y) |
| Z1 Motor | (Z1) |
| Z2 Motor | (E1) |
| Extruder Motor | (E0) |
Note
* PINDA 5V source can be any available/unused 5V pin
Important
Prusa MK3/S/+: Motherboard DIAG jumpers must be installed for X & Y and removed for Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Prusa MK2.5S: Motherboard DIAG jumpers must be removed for X, Y, Z, Z2 (E1), & E0 or homing and filament runout will not work correctly.
Source: Robin E3 Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
PC9 (HE0) |
| Bed Heater |
PC8 (H-BED) |
| Hotend Thermistor |
PA0 (ETEMP) |
| Bed Thermistor |
PA1 (B-MOT) |
| Hotend Cooling Fan | N/A (Wire to 24V) |
| Part Cooling Fan |
PA8 (FAN0) |
| SuperPINDA |
PB1 (Probe) |
| SuperPINDA 5V | (5V pin in Probe)* |
| BLTouch |
PA3 + PB1 (SERVO + Probe) |
| Filament Runout |
PB10 (MT-DET) |
| NeoPixels / RGB |
PA2 (NeoPixel) |
| X Motor | (X) |
| Y Motor | (Y) |
| Z1 Motor | (Z1) |
| Z2 Motor | (Z2) |
| Extruder Motor | (E) |
Note
* SuperPINDA 5V source can be any available/unused 5V pin
Important
Prusa MK3/S/+: Motherboard DIAG jumpers must be installed for X & Y and removed for Z & E or homing and filament runout will not work correctly.
Prusa MK2.5S: Motherboard DIAG jumpers must be removed for X, Y, Z, & E or homing and filament runout will not work correctly.
Source: Robin E3D Pins Diagram
| Pin Number / Name | |
|---|---|
| Hotend Heater |
PC9 (HE0) |
| Bed Heater |
PC8 (H-BED) |
| Hotend Thermistor |
PA0 (ETEMP) |
| Bed Thermistor |
PA1 (B-MOT) |
| Hotend Cooling Fan | N/A (Wire to 24V) |
| Part Cooling Fan |
PA8 (FAN0) |
| SuperPINDA |
PB1 (Probe) |
| SuperPINDA 5V | (5V pin in Probe)* |
| BLTouch |
PA3 + PB1 (SERVO + Probe) |
| Filament Runout |
PB10 (MT-DET) |
| NeoPixels / RGB |
PA2 (NeoPixel) |
| X Motor | (X) |
| Y Motor | (Y) |
| Z1 Motor | (Z1) |
| Z2 Motor | (Z2) |
| Extruder Motor | (E) |
Note
* SuperPINDA 5V source can be any available/unused 5V pin
Important
Prusa MK3/S/+: Motherboard DIAG jumpers must be installed for X & Y and removed for Z & E or homing and filament runout will not work correctly.
Prusa MK2.5S: Motherboard DIAG jumpers must be removed for X, Y, Z, & E or homing and filament runout will not work correctly.