Schematic

Power
7-Bit Unshifted I2C Address
Open Jumper (Default): 0x37
Closed Jumper: 0x36
Software configurable as well
I2C Pull Ups
Button Triggers
3.3V VReg prevents USB 5V
from being injected onto Qwiic 3.3V
µSD MP3 AVR
Amp
Connections
3.3V
GND
3.3V
GND
3.3V
GND
3.3V
GND
3.3V
GND
3.3V
GND
3.3V
GND
3.3V
GND
3.3V
GND
PTH
GND
PTH
GND
WT2003S
5V
GND GND
GND
VCCIO
VCCIO 5V
GND
VCCIO
GND
GND
3.3V
3.3V
GND
MICRO-SD
ATTINY84-ARDUINO
VCCIO
GND
AP2112-3.3V
1.0uF
GND
5V 3.3V
1.0uF
VCCIO
GND
3.3V
GND GND
3.3V
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
JP10
1
2
JP12
DVSS
6
AVSS
3
TX
16
RX
15
VOUTL
1
VOUTR
2
VDDIO
4
VDDLDO
5
BUSY
14
P10
7
SDDAT
8
SDCLK
9
SDCMD
10
DM
11
DP
12
ADKEY
13
U2
SHUTDOWN
1
GND
7*6
IN+
3
IN-
4
OUT+
5
OUT-
8
VDD
6
U1
TPA2005D1
1
2
3
4
1
2
3
4
CS
DI
DO
GND
NC
RSV
SCK
SHIELD
VCC
J1
VCC
1
(A3)3
10
(A2)2
11
(A1)1
12
(A0)0
13
(SCL/SCK/A4)4
9
(TX/MISO/A5)~5
8
(RX/SDA/MOSI/A6)~6
7
(A7)~7
6
(XTAL1)10
2
(XTAL2)9
3
(INT0)~8
5
(RESET)11
4
GND
14
U4
1 2
3 4
5 6
P1*2
P2*2
IN
GND
OUT
EN
NC
U3
C16
C9
GND
GND*2
VBUS
VBUS1*2
CC1
A5
D+
A6*2
D-
A7*2
CC2
B5
SHLD
SHLD1*8
SCL SCLSCL
SCL
SCL
SDA SDASDA
SDA
SDA
INT
INT
ADR
ADR
TRIGGER4
TRIGGER4
RST
RST
RST
TRIGGER2
TRIGGER2
SD_CMD SD_CMD
SD_CLK
SD_CLK
SD_DAT
SD_DAT
SDN
PLAYING
PLAYING
PLAYING
MP3-TXO
MP3-TXO
MP3-RXI
MP3-RXI
ADKEY
VOUTR
VOUTR
VOUTR
VOUTL
VOUTL
VOUTL
TRIGGER1
TRIGGER1
TRIGGER1
TRIGGER3
TRIGGER3
N. Seidle
X10
Released under the Creative Commons
Attribution Share-Alike 4.0 License
https://creativecommons.org/licenses/by-sa/4.0/
Design by:
USB-C