1 2 3 4 5 6 7 8 9 10 11 12

BIGTREETECH SKR-PRO-V1.1
WWW.BIGTREE-TECH.COM
TF card reader COR72 COD11
D11 OK
VCC_3.3V
R72
PIR7202 PIR7201 A
PID110A PID110KK VCC_3.3V Motor Drivers
1K POWER/blue VCC_3.3V
COTF1
TF1 PIC290C29
2COC29 PIC30C30
2COC30 PIC3C33
02COC33 PCOC42
IC42C42
0 PIC4C43
302COC43 PCOC44
IC4C44
02 PCOC45
IC4C45
502 PCOC46
ICC46
4602 PCOC47
ICC47
4702 PCOC48
IC48
C4802 PIC4COC49
9C49
02 PIC5COC50
0C50
2 PIC5COC51
102 PIC5COC52
C51 202
C52
TF_CARD
PITF1099 TF_SW COR1
R1
PIR101 10K
PIR102
COC1
C1
PIC101 PIC102
MCU PIC290104
1 PIC30104 1 PIC3104 01 PIC42104 01 PIC4104
301 PIC4104 01 PIC4104
501 PIC104
4601 PIC104
4701 PI104
C4801 PIC49104
01 PIC50104
1 PIC5104
101 PIC5104
201 NLDIR1 NLX0DIR
SW DIR1 X_DIR COJ30 COJ32 COJ33 COJ38 COJ39 COJ40
PITF1088 NLSTEP1 NLX0STEP J30 J32 J33 J38 J39 J40
A DATA1 COR2 STEP1 X_STEP NLX0PND NLY0PND NLZ0PND NLE00PND NLE10PND NLE20PND
A
PITF1077 TF_MISO R2
PIR201 10K
PIR202 4.7uF NLEN1 NLX0EN X_PND
1 PIJ3001 NLX0UART
Y_PND
1 PIJ3201 NLY0UART
Z_PND
1 PIJ3301 NLZ0UART
E0_PND
1 PIJ3801 NLE00UART
E1_PND
1 PIJ3901 NLE10UART PIJ4001 E2_PND
DATA0/DO
VSS PITF1066
GNDCOR5
GND OK EN1
NLDIR2
DIR2
X_EN
NLY0DIR
Y_DIR 2 PIJ3002
X_UART
2 PIJ3202
Y_UART
2 PIJ3302
Z_UART
2 PIJ3802
E0_UART
2 PIJ3902
E1_UART
1
2 PIJ4002
NLE20UART
E2_UART
COC5
PITF1055 TF_SCLK R5 10K C5 GND
TF CLK/SCLK
VDD PITF1044
PIR501 PIR502
PIC501 PIC502
NLSTEP2
STEP2
NLEN2
EN2
NLY0STEP
Y_STEP
NLY0EN
Y_EN
CONT2 CONT2 CONT2 CONT2 CONT2 CONT2
COR10
CMD/DI PITF1033 TF_MOSI R10
PIR1001 10K
PIR1002 NLDIR3
DIR3 NLZ0DIR
Z_DIR
PITF1022 TF_SS COR12
R12 10K 104
GND
GND
GND
GND

DATA3/CS PIR1201 PIR1202

COU1
NLSTEP3
STEP3 NLZ0STEP
Z_STEP
DATA2 PITF1011 U1 NLEN3
EN3 NLZ0EN
Z_EN
VCC_3.3V VCC_3.3V VCC_3.3V VCC_3.3V VCC_3.3V VCC_3.3V
NLTH00ADC0PF3
TH0_ADC_PF3 13 142 Z_UART
PITF10 PITF101 PITF10 2 PITF1013 NLTH10ADC0PF4 PIU1013
PF3/FSMC_A3(ADC3_IN9) FSMC_NBL1/DCMI_D3/PE1 PIU10142
COR61
R61 NLDIR4
DIR4 NLE00DIR
E0_DIR COJ52
J52 COR18
COJ53
J53 COR19
COJ54
J54 COR23
COJ55
J55 COR24
COJ56
J56 COR30
COJ61
J61 COR91
TH1_ADC_PF4 14
PIU1014 PF4/FSMC_A4(ADC3_IN14) PIU10141141 PE0 PIR6101 PIR6102 NLSTEP4 NLE00STEP R18 R19 R23 R24 R30 R91
TIM4_ETR/FSMC_NBL0/DCMI_D2/PE0 STEP4 E0_STEP 1K 1K 1K 1K 1K 1K
10
11
12
13

NLTH20ADC0PF5
TH2_ADC_PF5 15 140 Z_CS 1K NLEN4 NLE00EN 1 PIJ5201 PIR1801 PIR1802 1 PIJ5301 PIR1901 PIR1902 1 PIJ5401 PIR2301 PIR2302 1 PIJ5501 PIR2401 PIR2402 1 PIJ5601 PIR3001 PIR3002 1 PIJ6101 PIR9101 PIR9102
PIU1015
PF5/FSMC_A5(ADC3_IN15) SPI2_NSS/I2S2_WS/TIM4_CH4/TIM11_CH1/SDIO_D5/DCMI_D7/I2C1_SDA/CAN1_TX/PB9 PIU10140
EN4 E0_EN
TH3_ADC_PF6 18
NLTH30ADC0PF6 PIU1018 PF6/TIM10_CH1/FSMC_NIORD(ADC3_IN4) PIU10139139 Y_CS NLEN5 NLE10EN 2 PIJ5202 2 PIJ5302 2 PIJ5402 2 PIJ5502 2 PIJ5602 2 PIJ6102
TIM4_CH3/SDIO_D4/TIM10_CH1/DCMI_D6/ETH_MII_TXD3/I2C1_SCL/CAN1_RX/PB8 EN5 E1_EN
ADC_PF7 19 133 E0_CS NLSTEP5 NLE10STEP 3 PIJ5203 3 PIJ5303 3 PIJ5403 3 PIJ5503 3 PIJ5603 3 PIJ6103
PIU1019
PF7/TIM11_CH1/FSMC_NREG(ADC3_IN5) (JTDO)/TRACESWO/SPI3_SCK/I2S3_CK/TIM2_CH2/SPI1_SCK/PB3 PIU10133
STEP5 E1_STEP
GND ADC_PF8 20
PIU1020 PIU10132132 E1_CS NLDIR5 NLE10DIR 4 PIJ5204 4 PIJ5304 4 PIJ5404 4 PIJ5504 4 PIJ5604 4 PIJ6104
PF8/TIM13_CH1/FSMC_NIOWR(ADC3_IN6) UAT6_CTS/DCMI_D13/PG15 DIR5 E1_DIR
ADC_PF9 21 127 E2_CS NLEN6 NLE20EN
PIU1021
PF9/TIM14_CH1/FSMC_CD(ADC3_IN7) FSMC_NE4/UAT6_RTS/PG12 PIU10127
NLEXP20A EN6 E2_EN CONT4 CONT4 CONT4 CONT4 CONT4 CONT4
ADC_PF10 22 PIU10125125 EXP2_A

Power selection Power indicator light Z_EN

Z_DIR
PIU1022
26
PIU1026
28
PF10/FSMC_INTR(ADC3_IN8)
PCO/OTG_HS_ULPI_STP(ADC123_IN10)
FSMC_NCE4_1/FSMC_NE3/PG10
UAT6_RX/FSMC_NE2/FSMC_NCE3/PG9
124
PIU10124
E2_DIR
NLSTEP6
STEP6
NLDIR6
DIR6
NLE20STEP
E2_STEP
NLE20DIR
E2_DIR
COD4 D4 PIU1028 PC2/SPI2_MISO/OTG_HS_ULPI_DIR/ETH__MII_TXD2/I2S2EXT_SD(ADC123_IN12) UAT2_CK/FSMC_NE1/FSMC_NCE2/PD7 PIU10123123 Y_EN

USB_5V
COR4
R4 A K
GND
OK E0_EN
E0_DIR
29
PIU1029
34
PC3/SPI2_MOSI/I2S2_SD/OTG_HS_ULPI_NXT/ETH_MII_TX_CLK(ADC123_IN13) FSMC_NWAIT/UAT2_RX/PD6
122
PIU10122
COR65
E2_UART
PIU10119119 PD5 R65 PIR6502
1K VCC_3.3V VCC_3.3V
PIR402 PIR401
PID40A PID40K

OK
X E0
PIU1034 PA0/UAT2_CTS/UAT4_TX/ETH_MII_CRS/TIM2_CH1_CRS/TIM5_CH1/TIM8_ETR(ADC123_IN0/WKUP) FSMC_NWE/UAT2_TX/PD5 PIR6501
1K red E1_EN 37 118 E0_UART
COD8
D8
PIU1037 PA3/UAT2_RX/TIM5_CH4/TIM9_CH2/TIM2_CH4/OTG_HS_ULPI_D0/ETH_MII_COL(ADC123_IN3) FSMC_NOE/UAT2_RTS/PD4 PIU10118
COR67 PIR1602 PIR1702
116 PD2
PIU10116 R67 PIR6702
PIR6701 1K
COR6
R6 TIM3_ETR/UAT5_RX/SDIO_CMD/DCMI_D11/PD2 COR16
R16 COR17
R17
A K X_STEP 60 115 E1_UART
COJ2 VCC_12V PIR602 PIR601
PID80A PID80K GND PIU1060 PE9/FDSMC_D6/TIM1_CH1 FSMC_D3/CAN1_TX/PD1 PIU10115
COR69 10KCOM1 COC7 10KM2COM2 COC8
J2 3K Y_STEP 64 114 PD0 R69 PIR6902
1K M1 C735V/100UF C835V/100UF COJ3
orange PIU1064
PE11/FSMC_D8/TIM1_CH2 FSMC_D2/CAN1_RX/PD0 PIU10114 PIR6901
J3
3 PIJ203
USB_5V COD12
D12 Z_STEP 66
PIU1066 PE13/FSMC_D10/TIM1_CH3 UAT1_RTS/CAN1_TX/TIM1_ETR/OTG_FS_DP/PA12 PIU10104104 MCU_DP+ COJ4
J4 EN1 1PIM101 PIR1601
EN VMOTO
16 VMOTO1PIC701 PIC702
PIM1016 2
GND
COJ5
J5 EN4 1PIM201 PIR1701
EN VMOTO PIM2016
16 VMOTO1PIC801 PIC802
2
GND NLX0MS00SDI
X_MS0/SDI NLMOTO0MOSI
MOTO_MOSI
2 PIJ202
VCC_5V COR13
R13 A K
E0_STEP 67
PIU1067
PE14/FSMC_D11/TIM1_CH4 UAT1_CTS/CAN1_RX/TIM1_CH4/OTG_FS_DM/PA11
103 MCU_DM-
PIU10103 PIJ402
2 1
X_MS0/SDI 2PIM102
PIJ401
MS0/SDI GND
15
PIM1015
COJ7
J7 PIJ502
2 1
E0_MS0/SDI 2PIM202
PIJ501 15
MS0/SDI GND PIM2015
J8COJ8 NLX0MS10SCK PIJ301
X_MS1/SCK
1 2 PIJ302 NLMOTO0SCK
MOTO_SCK
DC_5V VCC_5V PIR1302 PIR1301PID120A PID120K GND NLHEART20PWM
HEART2_PWM 46 NLLCD0KEY0PA8
PIU10100100 LCD_KEY_PA8 X_MS1/SCK3PIM103 14 PIJ504 4 3 PIJ503 E0_MS1/SCK3PIM203 MS1/SCK 1B PIM2014
14 PIJ303 3 4 PIJ304
1 PIJ201 1.5K NLHEATER00PWM
PIU1046 PB0/TIM3_CH3/TIM8_CH2N/OTG_HS_ULPI_D1/ETH_MII_RXD2/TIM1_CH2N(ADC12_IN8) MCO1/UAT1_CK/TIM1_CH1/I2C3_SCL/OTG_FS_SOF/PA8 GND PIJ404 4 3 PIJ403
NLX0MS20CS X_PND MS1/SCK 1B PIM1014 PIJ701 1 GND NLE00MS20CSE0_PND
PIJ801 1 X_MS2/CS PIJ305 NLX0CS
X_CS
orange HEATER0_PWM 47 93 Z X_MS2/CS 4PIM104 13 E0_MS2/CS 4PIM204 13 NLX0SDO 5 6 PIJ306 NLMOTO0MISO
COD6
D6 NLBED0PWM
PIU1047
PB1/TIM3_CH4/TIM8_CH3N/OTG_HS_ULPI_D2/ETH_MII_RXD3/TIM1_CH3N(ADC12_IN9) UAT6_RTS/ETH_PPS_OUT/PG8 PIU1093
NLLCD0D70PG7
PIJ406
6 5 PIJ405 MS2/CS 2B PIM1013 PIJ702
2 PIJ506
6 5 PIJ505 MS2/CS 2B PIM2013 PIJ802
2 X_SDO PIJ307 7 8 PIJ308 MOTO_MISO
CONT3 BED_PWM 81
PIU1081 92
PIU1092 LCD_D7_PG7 PIJ408 8 7 PIJ407X_SDO 5PIM105 RST/SDO 2A 12
PIM1012 PIJ703 3 E0_SDO
PIJ508 8 7 PIJ507 5 12
PIM205 RST/SDO 2A PIM2012 PIJ803 3
COR15
R15 A K E2_STEP 82
FSMC_ALE/FSMC_A17/TIM4_CH1/UAT3_RTS/PD12 FSMC_INT3/UAT6_CK/PG7
91 NLLCD0D60PG6
LCD_D6_PG6 6PIM106 11 6PIM206 11

DIAG1

DIAG1
VCC_3.3V PIR1502 PIR1501PID60A PID60K GND NLHEATER10PWM
PIU1082
FSMC_A18/TIM4_CH2/PD13 FSMC_INT2/PG6 PIU1091
SLEEP 1A PIM1011 PIJ704
4 SLEEP 1A PIM2011 PIJ804
4 CONT4*2
HEATER1_PWM 85
PIU1085 PIU109090 E2 CONT4*2 STEP1 7PIM107 10
PIM1010 CONT4*2 STEP4 7PIM207 10
1K orange FSMC_D0/TIM4_CH3/PD14 FSMC_A15/PG5 STEP VDD VCC_3.3V STEP VDD PIM2010 VCC_3.3V COJ9
J9
E1_STEP 86
PIU1086
FSMC_D1/TIM4_CH4/PD15 FSMC_A14/PG4
89
PIU1089
NLLCD0BEEP0PG4
LCD_BEEP_PG4 DIR1 8PIM108
DIR GND
9
PIM109
GND
X DIR4 8PIM208
DIR GND
9
PIM209
GND
E0 NLY0MS00SDI
Y_MS0/SDI
PWM_PC8
NLPWM0PC8 98
PIU1098 PIU108888 LCD_D5_PG3
NLLCD0D50PG3 NLY0MS10SCK PIJ901 1 2 PIJ902
TIM8_CH3/SDIO_D0/TIM3_CH3/UAT6_CK/DCMI_D2/PC8 FSMC_A13/PG3 NLLCD0D40PG2 Y_MS1/SCK
PWM_PC9 99 87 LCD_D4_PG2 PIM10 8 NLX DRIVR PIM2018 NLE0 PIJ903 3 4 PIJ904 NLY0CS
Power DC dropper PIU1099
I2S_CKIN/MCO2/TIM8_CH4/SDIO_D1/I2C3_SDA/DCMI_D3/TIM3_CH4/PC9 FSMC_A12/PG2 PIU1087
X E0 Y_MS2/CS PIJ905 Y_CS

18

18
NLPWM0PE5
PWM_PE5 4
PIU104 PIU108080
NLLCD0E0PD11
LCD_E_PD11 DRIVR NLY0SDO 5 6 PIJ906
PE5/TRACED2/FSMC_A21/TIM9_CH1/DCMI_D6/EVENTOUT FSMC_CLE/FSMC_A16/UAT3_CTS/PD11 Y_SDO PIJ907 7 8 PIJ908
Input: 4.5V -- 28.5V NLPWM0PE6
PWM_PE6 5 79 NLLCD0RS0PD10
LCD_RS_PD10 VCC_3.3V

Y
PIU105
PE6/PRACED3/FSMC_A22/TIM9_CH2/DCMI_D7/EVENTOUT FSMC_D15/UAT3_CK/PD10 PIU1079
70
PIU1070 TF_SW
NLTF0SW VCC_3.3V
NLMCU0TX1 PB11/I2C2_SDA/UAT3_RX/OTG_HS_ULPI_D4/ETH_RMII_TX_EN/ETH_MII_TX_EN/TIM2_CH4 PIR20 2 CONT4*2
Max. Output current 3A MCU_TX1 101 69 X COJ11
COD3
D3 COU2 SGM6130 NLMCU0RX1 PIU10101
(OTG_FS_VBUS)UAT1_TX/TIM1_CH2/I2S3_SMBA/DCMI_D0/PA9
PB10/SPI2_SCK/I2S2_CK/I2C2_SCL/UAT3_TX/OTG_HS_ULPI_D3/ETH_MII_RX_ER/TIM2_CH3 PIU1069
COR20
R20 PIR2 02 J11

E1
COF1 U2 COR14 MCU_RX1 102
PIU10102 PIU106868 E0 NLZ0MS00SDI PIJ1101
F1 10A R14 COC2 UAT1_RX/TIM1_CH3/OTG_FS_ID/DCMI_D1/PA10 PE15/FSMC_D12/TIM1_BKIN 10KM3 COM3 COC10 COR22
R22 Z_MS0/SDI PIJ1102
POWER A K 12V/24V 2 1 C2 10nF MCU_TX6 96 65 Y C10 35V/100UF
IN SGM6130 BS I2S2_MCK/TIM8_CH1/SDIO_D6/UAT6_TX/DCMI_D0/TIM3_CH1/PC6 PE12/FSMC_D9/TIM1_CH3N NLZ0MS10SCK PIJ1103 13 24 PIJ1104
Z_MS1/SCK
1

PIF101 PIF102 PID30A PID30K PIU202 PIU201

PIR1401 PIR1402
PIC201 PIC202 PIU1096 PIU1065
COC9
C9PIC901 PIC301COC3
C3 PIC601COC6 COR21 10R MCU_RX6 97
PIU1097 PIU106363 E1 COJ12
J12 EN2 PIR2011PIM301 16 VMOTO1PIC1001 PIC10022
PIM3016
10KM4COM4 COC1435V/100UF
C14 NLZ0CS
SS34 C6 I2S3_MCK/TIM8_CH2/SDIO_D7/UAT6_RX/DCMI_D1/TIM3_CH2/PC7 PE10/FSMC_D7/TIM1_CH2N EN VMOTO GND Z_MS2/CS Z_CS
R21 7
EN SW
3 COL2
L2 COF4
F4 NLDC05V
DC_5V MCU_TX3 77
FSMC_D13/UAT3_TX/PD8 PE8/FSMC_D5/TIM1_CH1N
59 Y_DIR PIJ1202 2 1 PIJ1201
Y_MS0/SDI 2PIM302
MS0/SDI GND
15 COJ14
J14 COJ13
J13 EN5 1PIM401 PIR2 01
EN VMOTO PIM4016
16 VMOTO1PIC1401 PIC1402
2
GND NLZ0SDO
Z_SDO
PIJ1105 5 6 PIJ1106
COMP

PIR2101 PIR2102PIU207
PIR2102PIU207 PIU203 PIL201 PIL202 PIF401 PIF402 PIU1077 PIU1059 PIM3015
35V/100UFPIC902 PIC30210UFPIC602104 MCU_RX3 78 58 E1_DIR Y_MS1/SCK3PIM303 14 E1_MS0/SDI 2PIM402 15 COJ15
J15 PIJ1107
7 8 PIJ1108
GND
GND

10K 15uHCOR7
R7 2A PIU1078 FSMC_D14/UAT3_RX/PD9 PE7/FSMC_D4/TIM1_ETR PIU1058 GND PIJ1204 4 3 PIJ1203NLY0MS20CS MS1/SCK 1B PIM3014 PIJ1401 1 PIJ1302 2 1 PIJ1301 MS0/SDI GND PIM4015
2

8 5 57 NLWIFI0EN
WIFI_EN Y_MS2/CS Y_PND 4PIM304 13 E1_MS1/SCK3PIM403 14
SS FB PG1/FSMC_A11 PIJ1206 6 5 PIJ1205 MS2/CS 2B PIJ1402 2 GND PIJ1304 4 3 PIJ1303NLE10MS20CS MS1/SCK 1B PIM4014 PIJ1501 1 CONT4*2
1

PIU208 PIU205 PIR701 PIR702 PIU1057 PIM3013

PIC401 COC4 PIC1501 PIC1 01COC11
C11 PIC1301 NLTF0SS NLWIFI0RESET
K

C4 TF_SS 40 56 WIFI_RESET Y_SDO 5 12 E1_MS2/CS E1_PND

4 13
PIU204 PIU20TP PIU206 COC21
C21 PID50K D5
COD5 PIR802COR8 52.3K C15
COC15 C13
COC13 NLTF0SCLK
TF_SCLK
PIU1040
41
PA4/SPI1_NSS/SPI3_NSS/UAT2_CK/DCMI_HSYNC/I2S3_WS(ADC12_IN4/DAC_OUT1) PG0/FSMC_A10 PIU1056
55 NLWIFI0GPIO2
WIFI_GPIO2
PIJ1208 8 7 PIJ1207 PIM305 RST/SDO 2A
6PIM306
PIM3012
11
PIJ1403 3 PIJ1306 6 5 PIJ1305
E1_SDO
PIM404 MS2/CS
5PIM405
2B PIM4013
12
PIJ1502 2 J16
COJ16
NLE00MS00SDI PIJ1601 1 2 PIJ1602

DIAG1
R8 PA5/SPI1_SCK/OTG_HS_ULPI_CK/TIM2_CH1_ETR/TIM8_CH1N(ADC12_IN5/DAC_OUT2) PF15/FSMC_A9 SLEEP 1A PIJ1404 4 PIJ1308 8 7 PIJ1307 RST/SDO 2A PIM4012 PIJ1503 3 E0_MS0/SDI
4
TP

PIC2101 PIC2102 PIU1041 PIU1055 PIM3011

GND PIC402104 COC12
C12PIC1201 PIC1502 47uF PIC1 10UF
02 PIC1302 104 NLTF0MISO
TF_MISO 42 54 NLWIFI0GPIO0
WIFI_GPIO0 CONT4*2 STEP2 7 10 6 11
PID50A B340A 10K

DIAG1
PIU1042 PA6/SPI1_MISO/TIM8_BKIN/TIM13_CH1/DCMI_PIXCLK/TIM3_CH1/TIM1_BKIN(ADC12_IN6) PF14/FSMC_A8 PIU1054 PIM307 STEP VDD PIM3010 VCC_3.3V PIM406 SLEEP 1A PIM4011 PIJ1504 4 E0_MS1/SCK
NLE00MS10SCKPIJ1603
2

NC NLTF0MOSI
TF_MOSI 135 53 NLEXP20NC
EXP2_NC DIR2 8PIM308 9 Y CONT4*2 STEP5 7PIM407 10 3 4 PIJ1604
A

PIC120
22nFPIR1101
COR11
R11 PIR801 NLEXP20SS
EXP2_SS
PIU10135
73
I2C1_SMBA/CAN2_RX/OTG_HS_ULPI_D7/ETH_PPS_OUT/TIM3_CH2/SPI1_MOSI/SPI3_MOSI/DCMI_D10/I2SS3_SD/PB5 PF13/FSMC_A7 PIU1053
50 NLEXP20SW
EXP2_SW
DIR GND PIM309 GND
DIR5 8PIM408
STEP VDD PIM4010
9
VCC_3.3V
E1
E0_MS2/CS PIJ1605
5 6 PIJ1606
NLE00CS
E0_CS
PIR1102 PIU1073
PB12/SPI2_NSS/I2S2_WS/I2C2_SMBA/UAT3_CK/TIM1_BKIN/CAN2_RX/OTG_HS_ULPI_D5/ETH_RMII_TXD0/ETH_MII_TXD0/OTG_HS_ID PF12/FSMC_A6 PIU1050
DIR GND PIM409 GND E0_SDO
NLE00SDO
3K
NLEXP20SCK
EXP2_SCK 74
PIU1074 PB13/SPI2_SCK/I2S2_CK/UAT3_CTS/TIM1_CH1N/CAN2_TX/OTG_HS_ULPI_D6/ETH_RMII_TXD1/ETH_MII_TXD1(OTG_HS_VBUS) PF11/DCMI_D12
49
PIU1049 NLEXP20B
EXP2_B PIM3018 NLY
Y
PIJ1607 7 8 PIJ1608

18
GND NLEXP20MISO
EXP2_MISO 75
PIU1075
PB14/SPI2_MISO/TIM1_CH2N/TIM12_CH1/OTG_HS_DM/UAT3_RTS/TIM8_CH2N/I2S2EXT_SD PF2/FSMC_A2/I2C2_SMBA/EVENTOUT
12
PIU1012
X_EN DRIVR DRIVR PIM4018 NLE1
E1 CONT4*2

18
NLEXP20MOSI
EXP2_MOSI 76
GND PIU1076 PIU1077 X_UART VCC_3.3V COJ17

Z
PB15/SPI2_MOSI/I2S2_SD/TIM1_CH3N/TIM8_CH3N/TIM12_CH2/OTG_HS_DP/(RTC_REFIN) PC13/EVNTOUT(RTC_OUT/RTC_TAMP1/RTC_TS) J17
COJ10
J10
X_CS 110
PIU10110
JTDI/SPI3_NSS/I2S3_WS/TIM2_CH1_ETR/SPI1_NSS/PA15 PE4/TRACED1/FSMC_A20/DCMI_D4/EVENTOUT PIU103
3 PE4 COR70
R70 PIR7002
PIR7001
1K VCC_3.3V NLE10MS00SDI
E1_MS0/SDI
MOTO_SCK 111 PIU10111 SPI3_SCK/I2S3_CK/UAT4_TX/SDIO_D2/DCMI_D8/UAT3_TX/PC10 PE3/TRACED0/FSMC_A19/EVENTOUT PIU1022 Y_UART PIR2802COR28 NLE10MS10SCKPIJ1701 1 2 PIJ1702
E1_MS1/SCK
Power→ COR71 R28 PIR2902
E2
4 PIJ1004
NLPOWER GND MOTO_MISO 112 1 PE2 R71 PIR7102
1K PIJ1703 3 4 PIJ1704 NLE10CS
POWER PIU10112
UAT4_RX/SPI3_MISO/SDIO_D3/DCMI_D4/UAT3_RX/I2S3EXT_SD/PC11 PE2/TRACECLK/FSMC_A23/ETH_MII_TXD3/EVENTOUT PIU101 PIR7101
10KM5 COR29
R29 E1_MS2/CS PIJ1705 E1_CS
3 PIJ1003 MOTO_MOSI 113 PIU10113 COM5 C16 35V/100UF
COC16 NLE10SDO 5 6 PIJ1706
UAT5_TX/SDIO_CK/DCMI_D9/SPI3_MOSI/I2S3_SD/UAT3_CK/PC12 E1_SDO
B Moto Power→ 2 PIJ1002 COF2
F2
VMOTO
COJ18
J18 EN3 PIR28101PIM501 EN VMOTO 16 VMOTO1PIC1601 PIC16022
PIM5016
GND
10K M6 COM6 COC17
C17 35V/100UF PIJ1707 7 8 PIJ1708 B
1 PIJ1001 PIF201 PIF202 I2C1_SCL 136
PIU10136 I2C1_SCL/TIM4_CH1/CAN2_TX/DCMI_D5/UAT1_TX/PB6 24 NLOSC80OUT
PH1/OSC_OUT PIU1024
OSC8_OUT PIJ1802 2 1 PIJ1801 Z_MS0/SDI 2PIM502 MS0/SDI GND 15
PIM5015 J22
COJ22 J21
COJ21 EN6 1PIM601 PIR2901
EN VMOTO PIM6016
16 VMOTO 1PIC1701 PIC1702
NLVMOTO 2
GND CONT4*2
I2C1_SDA 137 23 NLOSC80IN
OSC8_IN Z_MS1/SCK3PIM503 14 E2_MS0/SDI 2PIM602 15 COJ25
J25 COJ24
CONT4 15A PIU10137
I2C1_SDA/FSMC_NL/DCMI_VSYNC/UAT1_RX/TIM4_CH2/PB7 PH0/OSC_IN PIU1023 GND PIJ1804
4 3 PIJ1803 MS1/SCK 1B PIM5014 PIJ2201
1 PIJ2102
2 1 PIJ2101
MS0/SDI GND PIM6015 J24
E2_EN 10
PIU1010 PF0/FSMC_A0/I2C2_SDA/EVENTOUT Z_MS2/CS
NLZ0MS20CSZ_PND
PIJ1806 6 5 PIJ1805 4PIM504 13
PIM5013 PIJ2202 2 PIJ2104 4 3 E2_MS1/SCK3PIM603
PIJ2103NLE20MS20CS 14
MS2/CS 2B GND MS1/SCK 1B PIM6014 PIJ2501 1 NLE20MS00SDI
E2_MS0/SDI
X_DIR 11 9 NLOSC320OUT
OSC32_OUT Z_SDO 5PIM505 12 E2_MS2/CSE2_PND
4 13 1 2 PIJ2402
PIU1011
PF1/FSMC_A1/I2C2_SCL/EVENTOUT PC15/EVENTOUT(OSC32_OUT)
8 NLOSC320IN
OSC32_IN
PIU109 PIJ1808
8 7 PIJ1807
6PIM506
RST/SDO 2A PIM5012
11
PIJ2203
3 PIJ2106
6 5 PIJ2105 PIM604
MS2/CS 2B PIM6013 PIJ2502
2 NLE20MS10SCKPIJ2401
E2_MS1/SCK
PIJ2108 8 7 PIJ2107E2_SDO 5PIM605 12 PIJ2403 3 4 PIJ2404

DIAG1
PC14/EVENTOUT(OSC32_IN) PIU108 SLEEP 1A PIM5011 PIJ2204 4 RST/SDO 2A PIM6012 PIJ2503 3 E2_MS2/CS PIJ2405 NLE20CS
E2_CS
PC1 27 CONT4*2 STEP3 7PIM507 10 6PIM606 11 5 6 PIJ2406
NLE20SDO

DIAG1
Input Voltage 14V -- 35V PIU1027 PC1/ETH_MDC(ADC123_IN11) STEP VDD PIM5010 VCC_3.3V SLEEP 1A PIM6011 PIJ2504 4 E2_SDO
Max. input voltage 15V PA1 35 PIU102525 RESET DIR3 8PIM508 9 Z J27
COJ27 CONT4*2 STEP6 7PIM607 10 PIJ2407
7 8 PIJ2408
OK Output Volatge 12V
yellow-green
D13
COD13 COR25 PA2
PIU1035
36
PA1/UAT2_RTS/UAT4_RX/ETH_RMII_REF_CLK/ETH_MII_RX_CLK/TIM5_CH2/TIM2_CH2(ADC123_IN1)
PA2/UAT2_TX/TIM5_CH3/TIM9_CH1/TIM2_CH3/ETH_MDIO(ADC123_IN2)
NRST DIR GND PIM509 GND
1
DIR6 8PIM608
STEP
DIR
VDD PIM6010
9
GND PIM609
VCC_3.3V
GND
E2
CONT4*2
Output Voltage 3.3V A R25 PIR2502
PIU1036 PIJ2701

GND
K
PID130K PID130APIR2501
43
PIU1043 PA7/SPI1_MOSI/TIM8_CH1N/TIM14_CH1/TIM3_CH2/ETH_MII_RX_DV/TIM1_CH1N/ETH_RMII_CRS_DV(ADC12_IN7) JTMS-SWDIO/PA13
105
PIU10105
SWDIO PIM5018 PIJ2702 2
Max. Output current 1A PIM6018

18
PC4 44 109 SWCLK NLZ
Z
Max. Output current 1A 1K PC4/ETH_RMII_RX_D0/ETH_MII_RX_D0(ADC12_IN14) JTCK-SWCLK/PA14 DRIVR 3 NLE2
E2

18
PIU1044 PIU10109 PIJ2703

U4
COU4 COT4
T4
U5
COU5 OK PC5
PD3
45
PIU1045
117
PC5/ETH_RMII_RX_D1/ETH_MII_RX_D1(ADC12_IN15) (NJTRST)SPI3_MISO/TIM3_CH1/SPI1_MISO/I2S3EXT_SD/PB4
134
PIU10134
138
TRST
NLBOOT0
BOOT0
PIJ2704 4 DRIVR
COF3
F3 3.3V FSMC_CLK/UAT2_CTS/PD3 BOOT0
ADJ/GND

PIU10117 PIU10138
PG11 126 48 NLBOOT1
BOOT1 Z
3 2 PIT401 12V/24V 1 3 PIU10126 FSMC_NCE4_2/ETH_MII_TX_EN/ETH_RMII_TX_EN/PG11 PB2/BOOT1 PIU1048
GND

VCC_5V PIU403 IN OUT PIU402 PIF301 PIF302 VCC_3.3V PIU501 IN OUT PIU503 VCC_12V PG13 128 106 COC18
C18 PIC1802
225
PIC2 01 COC22
C22
PIC2COC20
0C20
2 0.75A PIC2401COC24
C24 PIC2302 PIC60 1COC60
C60 PIC2502 PIC2602 PG14
PIU10128
129
FSMC_A24/UAT6_CTS/ETH_MII_TXD0/ETH_RMII_TXD0/PG13 VCAP_2 PIU10106
71
PIC1801
COC19
C19 225 GND
PIU10129 FSMC_A25/UAT6_TX/ETH_MII_TXD1/ETH_RMII_TXD1/PG14 VCAP_1 PIU1071 PIC1901 PIC1902
C23
COC23 C25
COC25 C26
COC26 143

VREF+
PIC2 0210UF PIC20104 PIU502 PDR_ON

VBAT
PIU10143
1 PIC2410UF
02 PIC23104
01 PIC6010UF
2 PIC2501104 PIC2104
601 33 COR33
R33 PIR3501 PIR4901
2

VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
PIU401 AMS1117-3.3V

VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VDDA PIU1033 PIR3302 PIR3301
7812 31 PIC27
C2702
COC27 PIC2C28
802
COC28 R35 R49
COR35 COR49
1

VSSA PIU1031 10R

0R 0R/NC
STM32F407ZGT6_144 PIU1032 PIU10 4 PIU10131 PIU10 21 PIU10108 PIU1095 PIU1084PIU1072 PIU1062 PIU1052 PIU1039 PIU1030 PIU10 7 PIU106 PIU10130 PIU10 2 PIU10107 PIU1094 PIU1083 PIU1061 PIU1051 PIU1038 PIU1016 PI10UF
C2701 PIC2104
801 PIR3502 PIR4902

32
144
131
121
108

6
95
84
72
62
52
39
30
17

130
120
107
94
83
61
51
38
16
GND
VCC_3.3V
GND
VCC_3.3V
COR31
R31 GNDA GND
GND PIR3101 PIR3102 GNDA
GND 0R default connect to VCC

MOS drivers PIR50 2

Power expansion ports Reset
A

VCC_3.3V
R50
COR50 PID10A 12V/24V C5810pF(NC)
COC58
1.8K
PID10K
D1
COD1
yellow-green
J66
R73
D22 yellow-green
Q8 VCC_5V PIR5 02
BLTouch SWD OK
OSC32_OUT PY1
IY102COY1
PIC5801 PIC5802
Cystals
GND PIR50 1 APID220A PID220KK OK OSC32_IN GND
K

COQ1
Q1 1 PIR7302 R55
COR55 COC59
C59

OK
12V/24V
HEATER1
NLHEATER1 D
PIQ10D PIQ10SS GND
FAN0 2 PIJ6602
1.8K D
PIQ80D

AO3400
S
GND
VCC_3.3V VCC_12V
PIR5 01
10K
VCC_3.3V
32.768KHZ(NC)
PIY101
PIC5902 PIC5901 OK
PIR810 WSF3085
FAN0 Q7 PIJ410 PIJ4103 PIJ4105 PIJ4107 PIJ4109 PIJ4101 NLRESET
RESET
COJ64VCC_5V
J64 RESET
COJ44
J44 COC53
C53
10pF(NC)
U6
COU6 COR81
R81 PIQ70C VCC_5V PIQ80G J41
COJ41 PIC5301 104
PWM_PC8 1 PIJ4401 PIC5302 GND
2 1
4 3
6 5
8 7
10 9
1211
SWCLK
G

10KPIU601
1
NC NC
8 PIU608
PIQ10G OK PIR8701 PIQ70B
R89 22R R90 10K
CONT6*2 PIK101 1 PIJ6401
NLPA1
PA1 GND 2 PIJ4402 NLSWDIO R58
SWDIO COR58 10K
VCC_3.3V COC62
C62
G

PIR5801 PIR5802
HEATER1_PWM 2
PIU602 IN A PIR8102 7
OUT A PIU607
R51
COR51
PIR5101
22R
PIR5102
R52
COR52
PIR5202
10K
PIR5201 GND
PIQ70E
R87SS8050 PIR8901 PIR8902 PIR9002 GND
BUTTON_2
K1
COK1 2 PIJ6402
SWDIO 3 PIJ4403 GND
PIC6201 PIC6202
22pF

1
GND
3
PIU603 GND VDD PIU606
6
VCC_12V 10K PIJ4102 PIJ4104 PIJ4106 PIJ4108 PIJ410 PIJ41012 OK 3 PIJ6403
NLPA2
PA2
GND
3.3V 4 PIJ4404 NLSWCLK
SWCLK COR57
R57
PIR5701
10K
PIR5702 OSC8_OUT PIR7 02
COR77
PIY301 Y3
COY3
HEART2_PWM 4
PIU604 IN B
5
OUT B PIU605
R53
COR53
PIR5301 PIR5302
R54
COR54
PIR5402
10K
PIR5401 GND PIK102 4 PIJ6404
5 PIJ4405
TRST
NLTRST R60
COR60
PIR6001
10K
PIR6002 VCC_3.3V OSC8_IN
R77
GND
2PIY302 4
PIY304 GND
PIR820 22R
G

COR82
R82 PIQ20G CONT4 PIR7 011M PIY303
TC4427E CONT5
PIC6701 C67
COC67

3
10K COQ2
Q2 PIC6702
GND GND 8MHz 22pF
PIR8201 NLHEATER2
HEATER2 D
PIQ20D PIQ20S
S
GND
GND
COD2
D2 WSF3085
K
PID20K PID20AA yellow-green 12V/24V
GND
J42
12V/24V COR56
R56 1.8K COJ62
J62
R26
COD14
D14yellow-green
COJ42 PIR5601 PIR5602 COR26
A
COQ6
K Q6
12V/24V 1 PIJ6201PIR2601
FAN1
PIR2602
PID140A PID140K
+ 6 PIJ4206 1.8K D S
HEATER2→ HEATER2 2 PIJ6202 PIQ60D PIQ60S GND
+
5 PIJ4205
4 PIJ4204
12V/24V
FAN1 Q10
COQ10
AO3400 I/O expansion ports
C
HEATER1→
3 PIJ4203
HEATER1
12V/24V PWM_PE5
PIQ10 C VCC_5V PIQ60G SPI3 OK IIC C
G

HEATER0→ 2 PIJ4202
HEATER0 PIR7901 PIQ100B
COR74
R74 22R COR75
R75 10K OK OK
CONT6
1 PIJ4201 R79 PIQ10 E
COR79
10K
SS8050
PIR7401 PIR7402 PIR7502 PIR7501 GND
BOOT UART3 VCC_5V T1
COT1
COJ43
J43 PIR7902 OK COJ47
J47 COC31
C31
VCC_5V J46
COJ46
OK VCC_5V GND
NLVCC05V
VCC_5V 104 1 2 GND COJ67
J67

LOGO
PIJ4601 PIJ4602
4 PIJ4304 J45
COJ45 1 PIJ4701 PIC3101 PIC3102 ADC_PF8
NLADC0PF8 PWM_PC9
NLPWM0PC9
POW_BED F5
COF5 20A NLFAN0PWM VCC_5V C54
COC54 PIJ4603 3 4 PIJ4604 PIJ6701 1 2 PIJ6702 GND
3 PIJ4303 PIF502 PIF501
GND COJ48
J48 COC57
C57 GND PIC5401 PIC5402 PIJ4501 1 2 PIJ4502
2 PIJ4702
NLI2C10SCL
I2C1_SCL
GND NLADC0PF10
ADC_PF10 PIJ4605 5 6 PIJ4606
NLADC0PF9
ADC_PF9 NLPE4
PE4 PIJ6703 3 4 PIJ6704
NLPD0
PD0
2 PIJ4302 104 MOTO_MISO MOTO_MOSI 3 PIJ4703NLI2C10SDA PC5
NLPC5 PC4
NLPC4 PE2
NLPE2 PD2
NLPD2
R59
COR59 104 PIJ4503 3 4 PIJ4504 I2C1_SDA PIJ4607 7 8 PIJ4608 PIJ6705 5 6 PIJ6706
HEAT_BED 1 PIJ4301 1.8K PIR5901
PIR5902 GND VCC_3.3V 1 PIJ4801 PIC5701 PIC5702 MOTO_SCK X_CS 4 PIJ4704 NLPG13
PG13 NLPG11
PG11 NLPE0
PE0 NLPD5
PD5
PIJ4505 5 6 PIJ4506 PIJ4609 9 10 PIJ46010 PIJ6707 7 8 PIJ6708
D7A
COD7 K Q3
COQ3 J1
COJ1 2 PIJ4802 GND PD3
NLPD3 PG14
NLPG14
CONT4 PID70A PID70K R3
COR3 MCU_TX3
NLMCU0TX3 CONT4 PIJ46011 1112 PIJ46012
GND
OK yellow-green
D
PIQ30D PIQ30S
S COJ66 12V/24V PIJ101 1 2 PIJ102
BOOT0 PIR301
BOOT1
100K
PIR302
3 PIJ4803
4 PIJ4804
NLMCU0RX3
MCU_RX3
CONT3*2 NLADC0PF7
ADC_PF7 PIJ46013 1314 PIJ46014
NLPC1
PC1 CONT4*2
PIR8602 R86 PIJ6602 COD22 D15 yellow-green PIJ103 3 4 PIJ104 PIR901 PIR902
COR86 COU7
U7
WSK220N04 NL12V024V COR73
PIJ6601
J63
COJ63
PIR7301 PIR7302 COR27
R27
PID220A PID220K
COD15
Q9
COQ9
COR87
PIR8702 PIR8701
R9
COR9 100K
CONT4
CONT7*2
A K CONT2*2
10K 1
NC NC PIU708
8 PIQ30G COR62
R62
1 PIJ6301PIR2701
1.8K
PIR2702
PID150A PID150K
D S PIQ70G
G

FAN2
PIU701
BED_PWM PIR8601 2
PIU702 IN A
7
OUT A PIU707 COR63
R63
PIR6301
22R
PIR6302 PIR6202
10K
PIR6201 GND
2 PIJ6302 PIQ80D COQ8
PIQ90D
COR89
PIQ90S GND
GND
3 6 AO3400
GND PIU703 GND VDD PIU706 VCC_12V FAN2 COQ11
Q11 PIQ80G PIR8902 PIR8901 PIQ70S PIQ70D
HEATER0_PWM 4
PIU704 IN B
5
OUT B PIU705 PIR6601 PIR6602
COR64
R64
PIR6402
10K
PIR6401 GND PIQ110C VCC_5VPIR90 2COR90 PIQ90G
PIR8 02COR88 R66
COR66 22R PWM_PE6 PIQ110B PIQ80S
G
G

COQ7
R88 TC4427E PIQ50G PIR80 1 COR76
R76 PIR7602 22R COR78
R78 10K
COR80 PIQ110E PIR7601 PIR7802 PIR7801 GND
10K Q5
COQ5 R80SS8050 PIR90 1
PIR8 01 NLHEATER0
HEATER0
12V/24V
D
PIQ50D
S
PIQ50S
WSF3085
GND
10K
PIR80 2 ESP8266 OK USB disk OK USB OK
PIR6801 PID90K OK
K

GND GND
W1
COW1 VCC_5V

5
R68
COR68
1.8K
D9
COD9 GND
NLMCU0RX6
MCU_RX6 1
PIW101 TXD
2
GND PIW102 GND D10
COD10 C56
COC56
J6
PIJ605COJ6
PIJ605
4 Mounting holes
PIR6802 PID90A
JLV1608A5R0NPST
OK yellow-green WIFI_EN 3PIW103 4 WIFI_GPIO2 GND PIJ604

GND
CH_PD GPIO2 PIW104 1 104 3 USB_D+
D+ PIJ603 NLUSB0D0PIZ101 PIZ102
COZ1
Z1
A

WIFI_RESET 5 6 WIFI_GPIO0 VBUS PID1001 PIC5601 PIC5602 GND

RESET GPIO0 PIW106 2 R84 10R DM 2 USB_D- Z2
7PIW105 8 MCU_TX6
NLMCU0TX6 D- PID1002 COR84
PIR8402 PIR8401 NLDM D- PIJ602 NLUSB0D0 COZ2
PIZ201 PIZ202
OK VCC_3.3V PIW107 VCC RXD PIW108 3 R85
COR85 10R DP
NLDP 1 USB_5V
NLUSB05V COZ3
Z3

GND
PIC5 02 D+ PID1003
4
PIR8502 PIR8501 VBUS PIJ601 PIZ301 PIZ302

C55
COC55 ESP8266 GND PID1004 GND JLV1608A5R0NPST
J49
COJ49 USB
LCD display Limited switches U8
VCCE PIC5 01 104
PID10 5 PIJ4906 6 5 PIJ4905NLMCU0DM0
JLV1608A5R0NPST COJ57
J57

5
PIJ5701
510R MCU_DP+
NLMCU0DP0 MCU_DM-
ETH_MDIO R70 12 21 TPTX+ R71 49.9R USB PIJ4904 4 3 PIJ4903 COLG1
LG1 CONT1
MDIO TXP USB_D+ USB_D-
OK ETH_MDC 13
MDC TXN
20
23
TPTX-
TPRX+
R72
R73
49.9R
49.9R
GND PIJ4902 2 1 PIJ4901 PILG101
10uH
PILG102 GND
RXP CONT3*2
RMII_TXD0 17 22 TPRX- R74 49.9R
LCD TXD0 RXN
VCC_5V COJ20
J20 RMII_TXD1 18
VCC_3.3V TXD1
RMII_TX_EN 16 3 LED1 R75 10K
PIJ2001 1 2 PIJ2002 GND TXEN LED1/REGOFF
LCD_D7_PG7 LCD_D6_PG6 2 LED2 R76 10K
PIJ2003 3 4 PIJ2004 LED2/nINTSEL
LCD_D5_PG3 LCD_D4_PG2 RMII_RXD0 8

E2
PIJ2005 5 6 PIJ2006 J19
COJ19 1 PIJ1901 R32
COR32 4.7K RXD0/MDE0 J58
COJ58
LCD_RS_PD10 LCD_E_PD11 VCC_3.3V RMII_RXD1 7 19 VCCE C60 104
LCD_KEY_PA8
PIJ2007

PIJ2009
7 8 PIJ2008
9 10 PIJ20010
LCD_BEEP_PG4
E2
2 PIJ1902
3 PIJ1903
PIR3202

PIC3201 PIC3202
PIR3201

COC32
C32
104
GND COD16
D16 10
RMII_CRS_DV11
RXD1/MODE1
RXER/PHYAD0
VDD1A
VDD2A
1
9
VCCE
VCCE
C61
C63
104
104
Thermistor ports OK CONT1
PIJ5801

E2 A K CRS_DV/MODE2 VDDIO
EXP1 PIR3402 PIR3401 PID160A PID160K GND 6 C64 10uF GND
R34
COR34 1K VDDCR
red RMII_REF_CLK
14 25 C65 104
R7810K nINT/REFCLKO GND
COJ23 COR36
Z
J23 1 PIJ2301 R36 4.7K ETH_RESET 15
PIR3602 PIR3601 VCC_3.3V GND nRST
J31
COJ31 2 PIJ2302 5 C66
C34
COC34 D17 XTAL1/CLKIN J29
COJ29
EXP2_NC 3 PIJ2303 GND COD17 24 4 22pF
1

PIC3401 PIC3402
1 2 PIJ3102 GND Z 104 GND RBIAS XTAL2 Y4
RESET PIJ3101
PIJ3103
EXP2_MOSI
3 4 PIJ3104
5 6 PIJ3106
EXP2_SW
EXP2_B
PIR3702
COR37
R37
PIR3701
1K
Z A
red
K
PID170A PID170K GND
R79
12.1K
LAN8720
R80
GND
2 4
25MHz
GND BED T0 2 PIJ2902
1 PIJ2901
GNDA
TH0_ADC_PF3 C36
COC36
PIC3601 PIC3602
10UF
GNDA
J59
COJ59
EXP2_SSPIJ3105 EXP2_A 1M PIJ5901

E1
PIJ3107 7 8 PIJ3108 J26
COJ26 1 PIJ2601 R38
COR38 4.7K CONT1
EXP2_SCK EXP2_MISO VCC_3.3V C68 COR42
R42 4.7K
3

PIR3802 PIR3801
PIJ3109 9 10 PIJ31010 2 PIJ2602
C35 22pF PIR4202 PIR4201 VCC_3.3V
COC35 D18
3 PIJ2603 PIC3501 PIC3502 GND COD18 J35
COJ35
EXP2 E1 104
E1 A K
D
SD_CARD
PIR3902
R39
COR39 PIR3901
1K
red
PID180A PID180K GND
VCCE E0 T1 2 PIJ3502
1 PIJ3501
GNDA
TH1_ADC_PF4 C38
COC38
PIC3801 PIC3802
10UF
GNDA
D

Y
J28
COJ28 1 PIJ2801 R40
COR40 4.7K
PIR4002 PIR4001 VCC_3.3V J49
2 PIJ2802 R81 510R R45
COR45 4.7K
3 PIJ2803 PIC3701 PIC3702
COC37
C37
GND COD19
D19 10 GREEN PIR4502 PIR4501 VCC_3.3V
Y 104 HR911105A J37
COJ37
Y A K LED2 9
GND
E1
PIR4102 PIR4101 PID190A PID190K
R41
COR41 1K 2 PIJ3702 GNDA
TFT display OK
red
VCC_3.3V VCCE
C69 10 TPTX+ 1 TD+
4
1 TX+
T2 1 PIJ3701
TH2_ADC_PF5 C40
COC40
PIC4001 PIC4002
10UF
GNDA
COJ60
J60

E0
J34
COJ34 1 PIJ3401 R43
COR43 4.7K
PIR4302 PIR4301 VCC_3.3V F6 C70 10 TPTX- 2 TD- 2 TX- PIJ6001
2 PIJ3402 R48
COR48 4.7K
3 PIJ3403 PIC3901 PIC3902
COC39
C39 D20
GND COD20 C71 10 TPRX+ 3 RD+ 3 RX+
PIR4802 PIR4801 VCC_3.3V CONT1
E0 104 J51
COJ51
COJ50
J50
VCC_5V
COC76
C76
PIR4402
COR44
R44
PIR4401
1K
E0 A K
PID200A PID200K

red
GND C72
220R/2A
C73 C74 C75 10
5
TPRX- 6 RD- 6 RX- E2 T3 2 PIJ5102 GNDA
TH3_ADC_PF6 C77
COC77
104 104 10uF 1 PIJ5101 PIC7701 PIC7702 GNDA
5 PIJ5005 PIC7601 PIC7602 223 11 YELLOW 4 10UF

X
J36
COJ36 1 PIJ3601 R46
COR46 4.7K 5
4 PIJ5004 GND PIR4602 PIR4601 VCC_3.3V R82510R
MCU_TX1 2 PIJ3602 LED1 12 7 R83
COR83 4.7K
3 PIJ5003 C41
COC41 D21 8 PIR8302 PIR8301 VCC_3.3V
MCU_RX1 3 PIJ3603 PIC4101 PIC4102 GND COD21
2 PIJ5002 X 104 GND GND 8
RESET X A K Title
1 PIJ5001 PIR4702 PIR4701 PID210A PID210K GND GND
COR47
R47 1K
red RJ45
TFT
Size Number Revision
GND
GND
A1
Date: 2019/7/13 Sheet of
File: E:\ \..\SKR-PRO-V1.1.SchDoc Drawn By:

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