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Welcome to Flux

Treat Flux like your intern. Tell it what you'd like to build and it'll get to work. You can also ask it questions, brainstorm ideas, and teach it your preferences. Learn More

Explain project
Write a project description
Find schematic issues
Create a test plan
Simulate a circuit
Prepare for Manufacturing
Component Selection Workflow
New Subsystem Wizard
Write I2C initialization code
Generate firmware skeleton
C2
Capacitance
100nF
C28
Capacitance
100nF
C4
Capacitance
100nF
C17
Capacitance
10uF
EXTERNAL FLASH CIRCUIT
C14
Capacitance
27pF
Can connect a DHT11 or DHT22 Sensor
User LED for blinking and testing the board
One-Wire protocol relies on the bus being pulled high by the pull-up resistor when not actively transmitting
Cl = 2(Ccap_load - Cstray)
SOLAR POWER INTERFACE
C20
Capacitance
10uF
C24
Capacitance
10uF
LoRa MODULE
C13
Capacitance
27pF
TEMP & HUMIDITY CIRCUIT
C18
Capacitance
100nF
POWER CIRCUIT
Pull up resistors
Line 1
R6 and r9 are are pull ups for the SD Card line
Line 2
Line 2
C1
Capacitance
100nF
Termination resistors
C8 Should be close to pin 44 of RP2040
Q1 Disconnects SOLAR input when both SOLAR and USB are connected. NOTE: This is a depletion type mosfet
MICROCONTROLLER
C29
Capacitance
100nF
C10
Capacitance
100nF
C26
Capacitance
100nF
C19
Capacitance
68pF
C15
Capacitance
10uF
C11 Should be close to pin 45 of RP2040
RF filter capacitors, C27, should be the closest to the microphone
C9
Capacitance
100nF
C5
Capacitance
100nF
Iset = 6800 / Rset = 1A
C6
Capacitance
100nF
C21
Capacitance
100nF
C16
Capacitance
4u7 F
C25
Capacitance
100nF
C11
Capacitance
1uF
C8
Capacitance
1uF
I_ch = (Vset / Rset) * 900 = 900mA
C22
Capacitance
4u7 F
MICROPHONE CIRCUIT
C27
Capacitance
100pF
C3
Capacitance
100nF
C7
Capacitance
100nF
SD CARD CIRCUIT
C23
Capacitance
100nF
USB INTERFACE
D2
Color
Green
D1
J5
R15
Resistance
10kΩ
R10
Resistance
470 Ω
R19
Resistance
1k5 Ω
R9
Resistance
10kΩ
R14
Resistance
6k8 Ω
R8
Resistance
15kΩ
R13
Resistance
68kΩ
R4
Resistance
1kΩ
R2
Resistance
27.4 Ω
R18
Resistance
1kΩ
R11
Resistance
1k5 Ω
R16
Resistance
50 Ω
D4
Color
Red
R17
Resistance
50 Ω
R7
Resistance
2kΩ
R12
Resistance
50 Ω
R1
Resistance
27.4 Ω
R5
Resistance
5kΩ
R3
Resistance
10kΩ
R6
Resistance
10kΩ
D5
Color
Green
J2
SW1
J6
J3
U3
Q1
MK1
U5
L2
Inductance
2u2 H
J4
U1
SW2
Y1
J1
U2
U6
U4

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Documents

    Documents are markdown text files which describe project goals, capture details, or even simulation outputs.

    Assets

    oshw-logo.svg

    oshw-logo

    microphone.svg

    microphone

    flux logo.svg

    flux logo

    Test Asset v4.svg

    Test Asset v4

    ESD_(Susceptible).svg

    ESD_(Susceptible)

    microphone v2.svg

    microphone v2

    ESD_(Susceptible) v2.svg

    ESD_(Susceptible) v2

    AvocAudio v1.svg

    AvocAudio v1Default

    AvocAudio 24 V1.svg

    AvocAudio 24 V1

    Curve Trace Blank While Routing Issue b0fa

    AvocAudio is a compact tinyML community board designed for extensive audio data collection for various tinyML applications. It leverages the Raspberry Pi RP2040 and integrates a LoRa-E5 LoRaWAN Transceiver Module for connectivity. Equipped with an SD card slot for local data storage, the board ensures efficient data collection. The board operates on solar power or a lithium-ion battery, ensuring flexible and efficient energy use. #audioDevices #raspberryPi #rp2040 #lorawan #iot #solar

    Properties

    creativecommons.org/licenses/by/4.0/

    Scientific

    RoHS

    3.3

    LoRaWAN

    Buttons

    Microphone, Temperature sensor, Humidity sensor

    SD Card

    Audio

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $14.01–$15.61

    Digi-Key

    $13.49–$17.44

    LCSC

    $34.02–$35.14

    Mouser

    $16.72–$16.93

    Verical

    $2.92–$4.73

    Controls