D1
发光二极管
BOOT0
44
NRST
7
PA0-WKUP
10
OSCIN_PD0
5
OSCOUT_PD1
6
PB8
45
PA2
12
PA1
11
PA3
13
PA4
14
PB9
46
PA5
15
PA6
16
PA7
17
PA8
29
PA9
30
PB10
21
PA10
31
PB0
18
PB1
19
PB2
20
PB3
39
PB11
22
PB4
40
PB5
41
PB6
42
PB7
43
PB12
25
PB13
26
PB14
27
PB15
28
PA11
32
PA12
33
PA13
34
PA14
37
PA15
38
PC13_RTC
2
PC14-OSC32_IN
3
PC15-OSC32_OUT
4
VBAT
1
STM32F103C6
LS1
SOUNDER
R1
1k
GND
2
DO
3
AO
4
VCC
1
M1
可燃气体感应器
SPK+
8
SPK-
7
DC-5V
6
GND
5
TX
4
RX
3
BUSY
2
VPP
1
IO7
9
IO6
10
IO5
11
IO4
12
IO3
13
IO2
14
IO1
15
DAC
16
JQ1
语音播放模块
