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Schematic

Layout

3D View

Schematic of AvocAudio - Fully Placed-dacre
D2
Color
Green
R19
Resistance
1k5 Ω
R9
Resistance
10kΩ
R4
Resistance
1kΩ
R2
Resistance
27.4 Ω
R18
Resistance
1kΩ
R16
Resistance
50 Ω
R17
Resistance
50 Ω
R1
Resistance
27.4 Ω
R3
Resistance
10kΩ
R6
Resistance
10kΩ
C12
Capacitance
100nF
C13
Capacitance
27pF
+3V3
+3V3
+1V1
+3V3
C22
Capacitance
4u7 F
+1V1
+3V3
+3V3
MIC_SCL
QSPI_SD0
QSPI_SS
SD_DATA1
LORA_RX
LORA_NRST
SD_CLK
QSPI_SD2
SD_CMD
QSPI_SD1
SD_DATA3
XOUT
LORA_RX
SD_DATA0
~USB_BOOT
QSPI_SS
SD_CMD
MIC_SDA
QSPI_SD3
SD_CLK
LORA_TX
SD_DATA2
SD_DATA2
DHT_DATA
LORA_TX
SD_DATA1
QSPI_SCLK
USB_D-
QSPI_SD1
XOUT
SD_DATA0
XIN
SD_DATA3
QSPI_SD2
QSPI_SCLK
QSPI_SD3
QSPI_SD0
USB_D+
MIC_WS
EXTERNAL FLASH CIRCUIT
User LED for blinking and testing the board
SW1
LoRa MODULE
Pull up resistors
Line 1
R6 and r9 are are pull ups for the SD Card line
Line 2
Line 2
Termination resistors
U1
U2
Not Recommended for New Designs

AvocAudio - Fully Placed-dacre