Schematics
IN+
1
D-
2
D+
3
OTG
4
GND
5
J1
Miro USB
GND
1
2
3
4 5
6
7
8
U2
TP4584
D1
D2
D3
D4
NC
C4
GND
NC
R0
CHRG
1
GND
2
BAT
3
VCC
4
PROG
5
U3
LP4051
105
C4
GND
GND
105
C5
GND
D5
2K
R3
GND
1K
R2
106
C3
GND
106
C4
GND
2.2uH
L1
1
1
B+
CON1
1
1
B-
CON1
0R
R1
GND
2
3
1
S1
SW-SPDT
100R
R5
1
2
3
4
8
7
6
5
9
10
11
12
13
14
15
16
U4
1
1
+
CON1
1
1
+
CON1
1
1
-
CON1
1
1
-
CON1
GND
D6
105
C8
GND
105
C7
GND
105
C14
GND
GND
105
C19
105
C20
2P7
R11
1
2
*
BT_ANT
GND
VDD
ANT
12
Y1
24M
0R
C10
GND
20K
R6 104
C12
1
2
3
4 5
6
7
8
U6
LTK5128
105
C15
10K
R13
GND
105
C16
10K
R17
1K
R15
104
C18
226
C17
GND
LS?
Speaker
OUT+ OUT-
BAT+
VMCU
DAC
AC6969