Schematic

1
1
2
2
3
3
4
4
D D
C C
B B
A A
1uF
C2
1uF
C4
GND
MPU_INT
C1
10UF
POWER
IMU Interface
6
1
5
U4A
NDC7002N
4
3
2
U4B
NDC7002N
4.7K
R2
4.7K
R3
4.7K
R4
4.7K
R5
EXT_SCL
EXT_SDA
EXT_SDA
EXT_SCL SCL
SDA
22nF
C3
GND
GND
3.3V
VCC
VIN
1
GND
2
EN
3
BP
4
VOUT
5
U1
RT9193-33
VCC
MPU_FSYNC
1K
R1
L1
GND
nCS
SCL
SDA
3.3V
AD0/SDO
GND
3.3V
0.1uF
C5
10K
R6
10K
R7
10K
R8
10nF
C7
0.1uF
C8
0.1uF
C9
MPU_INT
MPU_FSYNC
RESV
1
NC
2
NC
3
NC
4
NC
5
NC
6
NC
14
NC
15
NC
16
NC
17
GND
18
RESV
19
AUX_CL
7
AUX_DA
21
VDD
13
nCS
22
SCL/SCLK
23
SDA/SDI
24
RESV
20
AD0/SDO
9
INT
12
FSYNC
11
REGOUT
10
VDDIO
8
U5
MPU9255
VCC 3.3V
VCC 3.3V
1
2
3
4
5
6
P1
Header 6
BMP280
SCL
SDA
0.1uF
C6
3.3V
GND
GND
3.3V
3.3V GND
I2C address=1110111x(R/W)
GND
1
CSB
2
SDA
3
SCL
4
SDO
5
VDDIO
6
GND
7
VDD
8
U3
BMP280
GYRO_Addr 0xD0
ACCEL_Addr 0xD0
MAG_Addr 0x18
Addr 0xEE
P0C101 P0C102
P0C201 P0C202 P0C301 P0C302
P0C401 P0C402 P0C501 P0C502
P0C601 P0C602
P0C701 P0C702 P0C801 P0C802
P0C901 P0C902
P0L101 P0L102
P0P101
P0P102
P0P103
P0P104
P0P105
P0P106
P0R101 P0R102
P0R201 P0R202 P0R301 P0R302
P0R401 P0R402 P0R501 P0R502
P0R601 P0R602
P0R701 P0R702
P0R801 P0R802
P0U101
P0U102
P0U103
P0U104
P0U105
P0U301
P0U302
P0U303
P0U304
P0U305
P0U306
P0U307
P0U308
P0U4A01
P0U4A05
P0U4A06
P0U4B02
P0U4B03
P0U4B04
P0U501
P0U502
P0U503
P0U504
P0U505
P0U506
P0U507
P0U508
P0U509
P0U5010
P0U5011
P0U5012
P0U5013
P0U5014
P0U5015
P0U5016
P0U5017
P0U5018
P0U5019
P0U5020
P0U5021
P0U5022
P0U5023
P0U5024
P0C402 P0C502
P0C602
P0C702 P0C802
P0R102
P0R302 P0R502
P0R601
P0U105
P0U302
P0U305
P0U306
P0U308
P0U4A01 P0U4B03
P0U501
P0U508
P0U5013
P0R801
P0U509 N0AD0/SDO
P0P104
P0R201
P0U4A06
N0EXT0SCL
N0EXT0SCL
P0P103
P0R401
P0U4B04
N0EXT0SDA
N0EXT0SDA
P0C102 P0C201
P0C302
P0C401 P0C501
P0C601
P0C701 P0C801
P0C901
P0L102
P0P102
P0R702
P0R802
P0U102
P0U301
P0U307
P0U5018
P0U5020
N0GND
P0P106
P0R701
P0U5011
N0MPU0FSYNC
N0MPU0FSYNC
P0P105
P0U5012
N0MPU0INT
N0MPU0INT
P0R602
P0U5022 N0NCS
P0C301
P0U104
P0C902
P0U5010
P0L101
P0R101
P0U502
P0U503
P0U504
P0U505
P0U506
P0U507
P0U5014
P0U5015
P0U5016
P0U5017
P0U5019
P0U5021
P0R301
P0U304
P0U4A05
P0U5023 N0SCL
N0SCL
N0SCL
P0R501
P0U303
P0U4B02
P0U5024
N0SDA
N0SDA
N0SDA
P0C101 P0C202
P0P101
P0R202 P0R402
P0U101
P0U103
N0VCC
P0C402 P0C502
P0C602
P0C702 P0C802
P0R102
P0R302 P0R502
P0R601
P0U105
P0U302
P0U305
P0U306
P0U308
P0U4A01 P0U4B03
P0U501
P0U508
P0U5013
N0AD0/SDO
P0R801
P0U509
N0EXT0SCL
P0P104
P0R201
P0U4A06
N0EXT0SDA
P0P103
P0R401
P0U4B04
N0GND
P0C102 P0C201
P0C302
P0C401 P0C501
P0C601
P0C701 P0C801
P0C901
P0L102
P0P102
P0R702
P0R802
P0U102
P0U301
P0U307
P0U5018
P0U5020
N0MPU0FSYNC
P0P106
P0R701
P0U5011
N0MPU0INT
P0P105
P0U5012
N0NCS
P0R602
P0U5022
P0C301
P0U104
P0C902
P0U5010
P0L101
P0R101
P0U502
P0U503
P0U504
P0U505
P0U506
P0U507
P0U5014
P0U5015
P0U5016
P0U5017
P0U5019
P0U5021
N0SCL
P0R301
P0U304
P0U4A05
P0U5023
N0SDA
P0R501
P0U303
P0U4B02
P0U5024
N0VCC
P0C101 P0C202
P0P101
P0R202 P0R402
P0U101
P0U103