Schematics

A
B
D
123456
D
C
A
B
C
BAT
6V
SW1
PTC
16V2500mA
3.3V
PWR
GND
Q1
665K
+
EC1
470uF/10V
C6
104
C10
104
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
U1
SO16
C1
1PF
C2
1PF
L1
1nH
ANT
XTALH
12MHz
C3
1PF
C4
1PF
1
2
3
4
8
7
6
5
U2
YH6527
1
2
3
4
8
7
6
5
U3
YH6527
BAT4
BAT5
L2
3.3UH
L3
3.3UH
L4
3.3UH
L5
3.3UH
C5
104
C7
104
C8
104
C9
104
C11
104
C12
104
C13
104
C14
104
VCC
3.3V
3.3V
3.3V
M1CW
M1CCW
XTAL1
XTAIO
M2CW
M2CCW
XTAL1 XTAIO
VCC
M2CCW
M2CW
M1CCW
M1CW
YH181124
2.4G