Schematics

SPK
POWER
MCU
BLUE LED
LED
1
BT_ANT
C8
2.7PF
1
2
Y
1
24MHz
LED2
BLU LED
C5
105
C9
105
R23
75R
R16 1K
1
2
3
Q7
S8050
1
SHUNT-D
2
NC
3
IN+
4
IN-
5
VO+
6
VDD
7
GND
8
VO-
U1
8002D
C7
105
C2 683
R13
6.8K
1
+
2
_
CN2
2P
C
1
1
0
5
1
PB5
2
VBAT
3
VDDIO
4
PB1
5
FMIP
6
BT_RF
7
BT_OSC1
8
BT_OSCO
9
PC5
10
PC4
11
USBDM
12
USBDP
13
PA1
14
VSSIO
15
VCOM
16
DACL
U2
AC6969D
C10
105
R11
0R
R
2
0
R
R1
33K
USB1
MICOUSB
R19 1.5R
1
2
LED1
Red
1
2
1 2 3
4 5 6
SW1
D2
SS14
1
3
2 Q1
3906
R20 1K
LED3
RED LED
LED4
RED LED
LED5
GREEN LED
LED6
GREEN LED
LED7
BLU LED
LED8
BLU LED
R27
75R
R18 1K
1
2
3
Q5
S8050
R25
47R
R6 1K
1
2
3
Q3
S8050
R22
75R
R21 1K
1
2
3
Q6
S8050
R26
75R
R15 1K
1
2
3
Q4
S8050
R24
47R
R5 1K
1
2
3
Q2
S8050
LED9
RED LED
LED10
RED LED
LED11
GREEN LED
LED12
GREEN LED
LED13
BLU LED
LED14
BLU LED
DACL
LEDB
GREEN2
BLU2
3.3V
BLU2
BAT
GND
DACL
BLU1
GND
LEDB
BAT
BAT
B+
BAT
RED2
GREEN1
RED1
RED2
GREEN1
RED1
BLU1
GREEN2