Chat
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
U1
MK1
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 Ω
EXTERNAL FLASH CIRCUIT
R13
Resistance
68kΩ
CRYSTAL OSCILLATOR
R15
Resistance
10kΩ
Can connect a DHT11 or DHT22 Sensor
R10
Resistance
470 Ω
One-Wire protocol relies on the bus being pulled high by the pull-up resistor when not actively transmitting
Cl = 2(Ccap_load - Cstray)
R9
Resistance
10kΩ
SOLAR POWER INTERFACE
BATTERY CONNECTION
SOLAR PANEL CONNECTION
LoRa MODULE
Line 1
Enables long-range wireless LoRaWAN communication.
R4
Resistance
1kΩ
R19
Resistance
1k5 Ω
TEMP & HUMIDITY CIRCUIT
Pull up resistors
Line 1
R6 and r9 are are pull ups for the SD Card line
Line 2
Line 2
R18
Resistance
1kΩ
R16
Resistance
50 Ω
MAIN CONTROLLER
R11
Resistance
1k5 Ω
Q1 Disconnects SOLAR input when both SOLAR and USB are connected. NOTE: This is a depletion type mosfet
R14
Resistance
6.8kΩ
R8
Resistance
15kΩ
VOLTAGE REGULATOR
RF filter capacitors, C27, should be the closest to the microphone
MOUNTING HOLES
R7
Resistance
2kΩ
R12
Resistance
50 Ω
I_ch = (Vset / Rset) * 900 = 900mA
MICROPHONE CIRCUIT
R17
Resistance
50 Ω
R5
Resistance
5kΩ
R3
Resistance
10kΩ
R6
Resistance
10kΩ
SD CARD CIRCUIT
R1
Resistance
27.4 Ω
USB INTERFACE
+3V3
QSPI_SD0
VUSB
SD_CLK
SD_DATA1
+1V1
LORA_RX
SD_CLK
+3V3
MIC_WS
Decoupling Capacitors
Line 1
Ensure these capacitors are placed as close as possible to the MCU power rail
QSPI_SD3
LORA_NRST
QSPI_SCLK
QSPI_SS
VBAT
VUSB
SD_DATA3
USB_D-
XOUT
+3V3
LORA_NRST
+3V3
+1V1
VSOLAR
SD_DATA0
VSOLAR
SD_CMD
SD_DATA2
DECOUPLING CAPACITORS 1.1V
Line 1
Ensure these capacitors are placed as close as possible to the MCU power rail
XIN
~USB_BOOT
QSPI_SS
SD_CMD
+3V3
+3V3
QSPI_SD0
MIC_SDA
VBAT
+1V1
XIN
DHT_DATA
USB_D+
SD_DATA2
+3V3
VBAT
LORA_TX
SD_DATA1
QSPI_SD2
SD_DATA0
XOUT
SD_DATA3
LORA_RX
QSPI_SD1
QSPI_SD1
+3V3
MIC_WS
USB_D-
DHT_DATA
MIC_SCL
MIC_SDA
+3V3
+3V3
+3V3
QSPI_SD2
QSPI_SCLK
QSPI_SD3
MIC_SCL
LORA_TX
+3V3
USB_D+
D1
J5
J2
SW1
J6
J3
SW2
L2
Inductance
2.2uH
LED1
Color
Green
Q1
C29
Capacitance
100nF
U5
D4
Color
Red
C15
Capacitance
10uF
J4
Y1
U3
C21
Capacitance
100nF
U2
C22
Capacitance
4u7 F
D5
Color
Green
U6
U4
J1
- Metadata
- Board Outline
- Drill Holes
- Top Layers
- Top Overlay
- Top Solder Paste
- Top Solder Mask
- Top Copper
- GND1
- GND2
- SIGPWR3V3
- Bottom Solder Mask
- Bottom Solder Paste
- Bottom Overlay
- Bottom Layers
- Metadata
- Board Outline
- Drill Holes
- Top Layers
- Top Overlay
- Top Solder Paste
- Top Solder Mask
- Top Copper
- GND1
- GND2
- SIGPWR3V3
- Bottom Solder Mask
- Bottom Solder Paste
- Bottom Overlay
- Bottom Layers
Reviews
A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibraryjharwinbarrozo16.7k- A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibraryjharwinbarrozo1.5M
- A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibraryjharwinbarrozo1.5M
- General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliantjharwinbarrozo1.2M
- 10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcanjharwinbarrozo1.2M
- Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlinkjharwinbarrozo700.5k
- A momentary or non-latching switch which causes a temporary change in the state of an electrical circuit only while the switch is physically actuated. SWITCH TACTILE SPST-NO 0.05A 24Vjharwinbarrozo490.7k
- Straight 3 pin 5mm 3-pin Pitch 5mm 15A 1.5 300V Screw terminal block 01x03 #screwblock #connector #commonPartsLibraryjharwinbarrozo537.9k
- An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.Terminal
AvocAudio 04_02 Generating Manufacturing Files
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
Layout Rules
No layout rules computed.
Properties
Scientific
RoHS
3.3
LoRaWAN
Buttons
Microphone, Temperature sensor, Humidity sensor
SD Card
Audio
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Arrow | $3.77–$5.49 |
Digi-Key | $4.78–$7.04 |
LCSC | $6.22–$7.16 |
Mouser | $7.43–$7.60 |
Verical | $2.26–$3.60 |
Controls
Welcome 👋
Flux helps you build PCBs faster with an AI teammate!
Create your account to collaborate, stay updated, fork your own version, and get instant answers from our AI agent.