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C2
Capacitance
100nF
C28
Capacitance
100nF
C4
Capacitance
100nF
C17
Capacitance
10uF
C14
Capacitance
27pF
C20
Capacitance
10uF
C12
Capacitance
100nF
C24
Capacitance
10uF
C13
Capacitance
27pF
C18
Capacitance
100nF
C1
Capacitance
100nF
C29
Capacitance
100nF
C10
Capacitance
100nF
C26
Capacitance
100nF
C19
Capacitance
68pF
C15
Capacitance
10uF
C9
Capacitance
100nF
C5
Capacitance
100nF
C6
Capacitance
100nF
C21
Capacitance
100nF
C16
Capacitance
4u7 F
C25
Capacitance
100nF
C11
Capacitance
1uF
C8
Capacitance
1uF
C22
Capacitance
4u7 F
C27
Capacitance
100pF
C3
Capacitance
100nF
C7
Capacitance
100nF
C23
Capacitance
100nF
EXTERNAL FLASH CIRCUIT
D2
Color
Green
D1
R15
Resistance
10kΩ
Can connect a DHT11 or DHT22 Sensor
User LED for blinking and testing the board
R10
Resistance
470 Ω
R19
Resistance
1k5 Ω
Cl = 2(Ccap_load - Cstray)
R9
Resistance
10kΩ
SOLAR POWER INTERFACE
R14
Resistance
6k8 Ω
R8
Resistance
15kΩ
R13
Resistance
68kΩ
LoRa MODULE
R4
Resistance
1kΩ
TEMP & HUMIDITY CIRCUIT
R2
Resistance
27.4 Ω
POWER CIRCUIT
R1 and R2 are close to RP2040
R18
Resistance
1kΩ
C8 Should be close to pin 44 of RP2040
R11
Resistance
1k5 Ω
Q1 Disconnects SOLAR input when both SOLAR and USB are connected. NOTE: This is a depletion type mosfet
MICROCONTROLLER
R16
Resistance
50 Ω
D4
Color
Red
C11 Should be close to pin 45 of RP2040
Iset = 6800 / Rset = 1A
R17
Resistance
50 Ω
R7
Resistance
2kΩ
R12
Resistance
50 Ω
R1
Resistance
27.4 Ω
I_ch = (Vset / Rset) * 900 = 900mA
MICROPHONE CIRCUIT
R5
Resistance
5kΩ
R3
Resistance
10kΩ
R6
Resistance
10kΩ
SD CARD CIRCUIT
USB INTERFACE
D5
Color
Green
J2
SW1
J6
U3
J5
Q1
MK1
U5
L2
Inductance
2u2 H
SW2
J4
U1
U2
U6
J3
U4

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    AvocAudio: A tinyML community board

    AvocAudio: A tinyML community board thumbnail
    AvocAudio is a tinyML community board that is aims at mass audio data collection for different tinyML application.

    Properties

    Raspberry Pi

    Pricing & Availability

    Distributor

    Qty 1

    Digi-Key

    $3.95–$5.71

    LCSC

    $5.56–$6.15

    Mouser

    $7.97

    Controls