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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

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U1
C28
Capacitance
100nF
C14
Capacitance
27pF
C1
Capacitance
100nF
C20
Capacitance
10uF
C12
Capacitance
100nF
C3
Capacitance
100nF
C8
Capacitance
1uF
C13
Capacitance
27pF
C10
Capacitance
100nF
C25
Capacitance
100nF
C24
Capacitance
10uF
C16
Capacitance
4.7uF
C6
Capacitance
100nF
C9
Capacitance
100nF
C4
Capacitance
100nF
C17
Capacitance
10uF
C23
Capacitance
100nF
C19
Capacitance
68pF
C2
Capacitance
100nF
C27
Capacitance
100pF
C5
Capacitance
100nF
C7
Capacitance
100nF
C18
Capacitance
100nF
C26
Capacitance
100nF
C11
Capacitance
1uF
R2
Resistance
27.4 ฮฉ
R13
Resistance
68kฮฉ
R15
Resistance
10kฮฉ
R10
Resistance
470 ฮฉ
R9
Resistance
10kฮฉ
R4
Resistance
1kฮฉ
R19
Resistance
1k5 ฮฉ
R18
Resistance
1kฮฉ
R16
Resistance
50 ฮฉ
R11
Resistance
1k5 ฮฉ
R14
Resistance
6.8kฮฉ
R8
Resistance
15kฮฉ
R7
Resistance
2kฮฉ
R12
Resistance
50 ฮฉ
R17
Resistance
50 ฮฉ
R5
Resistance
5kฮฉ
R3
Resistance
10kฮฉ
R6
Resistance
10kฮฉ
R1
Resistance
27.4 ฮฉ
EXTERNAL FLASH CIRCUIT
+3V3
QSPI_SD0
VUSB
CRYSTAL OSCILLATOR
Can connect a DHT11 or DHT22 Sensor
SD_CLK
SD_DATA1
+1V1
LORA_RX
SD_CLK
+3V3
One-Wire protocol relies on the bus being pulled high by the pull-up resistor when not actively transmitting
MIC_WS
Decoupling Capacitors
Line 1
Ensure these capacitors are placed as close as possible to the MCU power rail
Cl = 2(Ccap_load - Cstray)
QSPI_SD3
SOLAR POWER INTERFACE
BATTERY CONNECTION
LORA_NRST
QSPI_SCLK
SOLAR PANEL CONNECTION
QSPI_SS
VBAT
VUSB
SD_DATA3
USB_D-
XOUT
+3V3
LORA_NRST
+3V3
+1V1
VSOLAR
LoRa MODULE
Line 1
Enables long-range wireless LoRaWAN communication.
SD_DATA0
VSOLAR
SD_CMD
TEMP & HUMIDITY CIRCUIT
SD_DATA2
DECOUPLING CAPACITORS 1.1V
Line 1
Ensure these capacitors are placed as close as possible to the MCU power rail
Pull up resistors
Line 1
R6 and r9 are are pull ups for the SD Card line
Line 2
Line 2
XIN
~USB_BOOT
QSPI_SS
SD_CMD
+3V3
+3V3
QSPI_SD0
MAIN CONTROLLER
Q1 Disconnects SOLAR input when both SOLAR and USB are connected. NOTE: This is a depletion type mosfet
MIC_SDA
VBAT
+1V1
XIN
DHT_DATA
USB_D+
SD_DATA2
+3V3
VBAT
VOLTAGE REGULATOR
LORA_TX
RF filter capacitors, C27, should be the closest to the microphone
SD_DATA1
QSPI_SD2
SD_DATA0
XOUT
SD_DATA3
LORA_RX
QSPI_SD1
MOUNTING HOLES
QSPI_SD1
+3V3
MIC_WS
I_ch = (Vset / Rset) * 900 = 900mA
MICROPHONE CIRCUIT
USB_D-
DHT_DATA
MIC_SCL
MIC_SDA
+3V3
+3V3
+3V3
SD CARD CIRCUIT
QSPI_SD2
QSPI_SCLK
QSPI_SD3
MIC_SCL
LORA_TX
+3V3
USB_D+
USB INTERFACE
D1
J5
J2
SW1
J6
J3
L2
Inductance
2.2uH
D2
Color
Green
Q1
MK1
C29
Capacitance
100nF
U5
D4
Color
Red
C15
Capacitance
10uF
Y1
C21
Capacitance
100nF
C22
Capacitance
4u7 F
SW2
D5
Color
Green
U3
U2
U6
U4
J4
J1

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Documents

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

    Assets

    svg

    oshw-logo.svg

    oshw-logo
    svg

    microphone.svg

    microphone
    svg

    flux logo.svg

    flux logo
    svg

    Test Asset v4.svg

    Test Asset v4
    svg

    ESD_(Susceptible).svg

    ESD_(Susceptible)
    dxf

    BoardShape.DXF

    BoardShape
    svg

    microphone v2.svg

    microphone v2
    svg

    ESD_(Susceptible) v2.svg

    ESD_(Susceptible) v2
    svg

    AvocAudio v1.svg

    AvocAudio v1Default
    svg

    AvocAudio 24 V1.svg

    AvocAudio 24 V1

    AvocAudio 03_01 Navigating the PCB Environment

    AvocAudio 03_01 Navigating the PCB Environment thumbnail
    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

    creativecommons.org/licenses/by/4.0/

    Pricing & Availability

    Distributor

    Qty 1

    Controls