3
4
5
6
7
8
C4
4.7uF
GND
2
U1
REGIN
VDD
RST
SUSPEND
SUSPEND
RI
DCD
DTR
DSR
TXD
RXD
RTS
CTS
GND
VBUS
D-
D+
CP2102
7
6
C5
0.1uF
3
8
5
4
9
12
11
2
1
28
27
26
25
24
23
1
USB_5V
USB_5V
C2
1uF
A
GND
USB.J
VBUS
D-
D+
ID
GND
SHIELD1
SHIELD2
SHIELD3
SHIELD4
USB
1
2
3
4
5
6
7
8
9
R1
R2
4.7k
10k
USB_5V
GND
P_RX
P_TX
USB2UART
GND
+3.3V
VDD
DQ
GND
1
2
3
H3
GND
DS18B20
R7
4.7k
P7
+3.3V
R6
100
+5
GND
OUT
1
2
3
H4
C12
0.1uF
GND
R8
1k
P1
GND
GND
C15
0.1uF
C16
10uF
C14
C17
1uF
1uF
+3.3V
CS
RES
D\C
R3
0R
P_CE0
P24
P27
P_SCK
P_MOSI
GND
GND
GND
GND
GND
R14
C18
C19
1M
4.7uF
2.2uF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
H5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
B
C
D
Infrared
OLED
SSD1306 OLED
GND
PCF8574
I2C Address: 0x20
PCF8591
BCM
2
3
4
17
27
22
10
9
11
0
5
6
13
19
26
wPi
8
9
7
0
2
3
12
13
14
30
21
22
23
24
25
1
RPI
+3.3V
P_SDA
P_SCL
P7
GND
P0
P2
P3
+3.3V
P_MOSI
P_MISO
P_SCK
GND
ID_SD
P21
P22
P23
P24
P25
GND
P2
1
2
4
3
6
5
8
7
9
10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
+5V
+5V
GND
P_TX
P_RX
P1
GND
P4
P5
GND
P6
P_CE0
P_CE1
ID_SC
GND
P26
GND
P27
P28
P29
wPi
BCM
15
16
1
4
5
6
10
11
31
26
27
28
29
14
15
18
23
24
25
8
7
1
12
16
20
21
aveshareW
2
KEY_A
P28
KEY_C
S1
1
2
3
7
A
CTR
C
Shield1
B
4
COM 5
6
D
8
Shield2
Joystick
KEY_B
KEY_D
GND
JoyStick
Beep
3
4
+3.3V
BUZ
R11
560
Q1
S8550
GND
5
+3.3V
P25
D2
D3
D1
1
2
r
e
z
z
u
B
B1
+3.3V
GND
C1 0.1uf
GND
8
7
6
5
U2
VDD
GND
VDDIO
SDO
GND
CSB
SDI
SCK
BMP280
GND +3.3V
1
2
3
4
P_SDA
P_SCL
I2C Address: 0x76
P_SCL
P_SDA
+3.3V
C6
0.1uF
U3
32KHz
VCC
INT/SQW
RST
NC
NC
NC
NC
1
2
3
4
5
6
7
8
SCL
SDA
VBAT
GND
NC
NC
NC
NC
16
15
14
13
12
11
10
9
GND
DS3231
BAT1
GND
I2C Address: 0x68
BMP280
DS3231
AIN0
AIN1
AIN2
AIN3
AOUT
GND
2
1
2
1
2
1
P1
P3
P4
GND
C10
1uF
C11
0.1uF
+3.3V
P_SDA
P_SCL
P29
BUZ
L4
L3
L2
P9
1
P10
1
L4
L3
VDD
SDA
SCL
INT
P7
P6
P5
P4
16
15
14
13
12
11
10
9
GND
1
2
3
4
5
6
7
8
U5
A0
A1
A2
P0
P1
P2
P3
VSS
PCF8574
KEY_A
KEY_B
KEY_C
KEY_D
GND
GND
C8
1uF
C9
0.1uF
AOUT
C13
0.1uF
P_SCL
P_SDA
+3.3V
+3.3V
GND
AIN0
AIN1
AIN2
AIN3
U6
AIN0
AIN1
AIN2
AIN3
A0
A1
A2
VSS
1
2
3
4
5
6
7
8
PCF8591
VDD
AOUT
VREF
AGND
EXT
OSC
SCL
SDA
16
15
14
13
12
11
10
9
I2C Address: 0x48
L2
GND
1
2
3
4
P5
1
2
3
4
P7
+3.3V
GND
A0
A1
A2
A3
D0
D1
D2
D3
1
2
3
4
P6
1
2
3
4
P8
AIN0
AIN1
AIN2
AIN3
P21
P22
P23
P26
GND
R13
1k
R16
1k
R12
1k
LED
Sensor Interface
6
7
8
A
B
C
D