Schematics

5
5
4
4
3
3
2
2
1
1
D
C
B
A
A
TP & MARK
VBAT
VCC3.3V
VBAT
VCC3.3V
VCC3.3V
VCC3.3V
VBAT
VBAT
3.3V
3.3V
3.3V
5V
5V
3.3V
5V
R
[2,3]
G
[2,3]
B
[2,3]
LDO_EN
[2]
R
[2,3]
G
[2,3]
B
[2,3]
KEY0
[2]
KEY0
[2]
KEY1
[2]
DET0
[2]
KEY1
[2]
DET0
[2]
LDO_EN
[2]
KEY0
[2]
KEY1
[2]
R
[2,3]
G
[2,3]
B
[2,3]
TRI0
[2]
TRI0
[2]
CH_IN
[2]
CH_IN
[2]
R4 10K
R24 2K
U3 WB3S
CEN
1
ADC3
2
EN
3
P14
4
PWM5/GPIO26
5
PWM4/GPIO24
6
PWM0/GPIO6
7
VCC
8
GND
9
PWM1/GPIO7
10
TXD2
11
RXD2
12
PWM3/GPIO9
13
PWM2/GPIO8
14
RXD1
15
TXD1
16
H8
NC
1
TP5
1
U1
SGM2035C-3.3
EN
1
GND
2
IN
3
OUT
4
NC
5
BP
6
PADG
7
TP6
1
J3
1.25T-6AB
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
TP9
1
TP8
1
H7
NC
1
C9
0.1uF/10V
H5
NC
1
TP7
1
C4 0.1uF/10V
U2
SGM2036-3.3
IN
1
GND
2
EN
3
BP
4
OUT
5
C3 10uF/10V
C10
0.01uF/10V
C7
0.01uF/10V
K2 KEY
1
2 3
4
C11
0.1uF/10V
R1 0R/NC
C5
1uF/10V
H6
NC
1
U4
MCU SCW011
VDD
1
P6_5/OSCI
2
P6_4/OSCO
3
P6_3/RST
4
P6_2/TCC
5
P6_1
6
P6_0/INT
7
VSS
8
TP1
1
R3 10K/NC
Q1
8050
1
2 3
TP10
1
R25
10K
C8
0.1uF/10V
TP2
1
C6
2.2uF/10V
TP3
1
TP4
1
C12
0.1uF/10V
R2 10K/NC
K1 KEY
1
2 3
4