Schematic

1
1
2
2
3
3
4
4
D D
C C
B B
A A
1M
R1
1M
R2
1M
R3
1M
R4
1M
R5
1M
R6
1M
R7
1M
R8
GND
K0
K1
K2
K3
K4
K5
K6
K7
100nF
C7
GND
aveshare
W
SLPSENA
1
TP3
2
TP2
3
SENADJ0
4
TP1
5
TP0
6
TP15
7
TP14
8
SENADJ3
9
TP13
10
TP12
11
SDA
12
SDO
13
SCL
14
SLPSENB
15
TP11
16
TP10
17
SENADJ2
18
TP9
19
TP8
20
TEST
21
TP7
22
TP6
23
SENADJ1
24
TP5
25
TP4
26
VDD
27
VSS
28
U1
TTP229L
0-50pFC1
0-50pF
C2
0-50pF
C4
0-50pF
C3
0-50pF
C5
0-50pF
C6GND
GND
GND
SDO
TEST
K0
K1
K2
K3
K4
K5
K6
K7
K8
K9
K10
K11
K12
K13
K14
K15
10K
R10
10K
R11
Micro:bit Piano Board
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
H41
H41
3V3
GND
GND
LED1/P3 LED1/P3
P0 P0
LED2/P4 LED2/P4
KEY_A/P5 KEY_A/P5
LED9/P6
LED8/P7
P1
P2
GND
P8
LED7/P9
LED3P10
KEY_B/P11
P12
SCK/P13
MISO/P14
MOSI/P15
P16
SCL/P19
SDA/P20
3V3/P17
3V3
GND
GND
LED9/P6
LED8/P7
P1
P2
GND
P8
LED7/P9
LED3P10
KEY_B/P11
P12
SCK/P13
MISO/P14
MOSI/P15
P16
SCL/P19
SDA/P20
3V3/P17
3V3/P18
3V3/P18
SDA/P20
SCL/P19
3V3
3V3
3V3
P0
1
2
Buzzer
B1
180
R13
SDA/P20
SCL/P19
10uF/25V
C8
Q1
NPN_SOT23
GND
3V3
D1
1N4148
GND
VDD
DOUTVSS
DIN
L1
WS2812B
VDD
DOUTVSS
DIN
L2
WS2812B
VDD
DOUTVSS
DIN
L3
WS2812B
P1
3V3
GND GND
VDD
DOUTVSS
DIN
L4
WS2812B
GND
PIANO_B
PIANO_A
PIANO_A#
PIANO_G#
PIANO_G
PIANO_F#
PIANO_F
PIANO_E
PIANO_D#
PIANO_D
PIANO_C#
PIANO_C
PIANO_C1
1
2
3
4
5
6
H1
Header 6
3V3
GND
P0
P1
SCL/P19
SDA/P20
1
2
3
4
5
6
H2
Header 6
3V3
GND
SCK/P13
MISO/P14
MOSI/P15
P2
Micro:bit GPIO
RGB LED
Buzzer
Touch
I2C