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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
LiFePO4 AAA(10440) 3.2V Rechargeable Battery
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12
I2C pull up resistors solder the jumpers if you need I2C and pull up for SDA and...
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13
OT\_PROG Digital Programming input for IC overtemperature threshold. Connect to ...
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2
GPIO34 = RTC\_GPIO4
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VOC\_SAMP Sampling pin for MPPT network. Connect to the mid-point of external re...
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3
VBAT\_OV = 3.15 V
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5
VBAT\_UV = 2.2 V
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You can use all 4 cells or any amount of cells in your design. Each cell can gen...
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4
VBAT\_OK = 2.44 V
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You can bypass blocking diodes with these solder jumpers
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This connector allows disconnecting the CH340C circuit from the rest of the comp...
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VBAT\_OK\_HYST = 2.85 V
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PROG
R17
Resistance
10kΩ
R14
Resistance
4.42MΩ
R5
Resistance
0 Ω
R15
Resistance
100kΩ
R2
Resistance
5.6MΩ
R18
Resistance
10kΩ
R6
Resistance
5.9MΩ
R1
Resistance
4.42MΩ
R8
Resistance
5.6MΩ
R3
Resistance
10MΩ
R11
Resistance
4.22MΩ
R4
Resistance
120C Ω
R7
Resistance
4.02MΩ
R12
Resistance
1.43MΩ
R13
Resistance
100kΩ
R16
Resistance
100kΩ
R9
Resistance
4.42MΩ
SDA
U3
SJ1
SJ3
SJ4
SJ5
SCL
SJ6
SJ2
U4
U2
Manufacturer Part Number
ESP32-WROOM-32
D4
C7
Capacitance
0.1uF
D1
C8
Capacitance
0.1uF
C16
Capacitance
0.1uF
C11
Capacitance
0.1uF
C14
Capacitance
0.1uF
C3
Capacitance
0.01uF
C18
Capacitance
0.1uF
C9
Capacitance
0.1uF
C12
Capacitance
0.1uF
C5
Capacitance
4.7uF
C10
Capacitance
0.1uF
C15
Capacitance
10uF
C17
Capacitance
10uF
D3
C19
Capacitance
10uF
C1
Capacitance
4.7uF
C6
Capacitance
4.7uF
C4
Capacitance
100uF
C2
Capacitance
0.1uF
C13
Capacitance
0.1uF
D2
USER1
IOs
U1
Manufacturer Part Number
BQ25504RGTT
IO0
RST
USER2
L2
Inductance
22uH
SC3
QWIIC
SC1
SC2
SC4
I2C
BAT1
Q1
Q2
USB
H1
H2
H3
H4

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Documents

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

    Assets

    Sunflower MH.svg

    Sunflower MH

    Pinout.svg

    Pinout
    Battery 10440 3D.step

    Battery 10440 3D.step

    Battery 10440 3D

    Sunflower Seeds.svg

    Sunflower SeedsDefault

    Sunflower 1.svg

    Sunflower 1
    Jumper-green.step

    Jumper-green.step

    Jumper-green3D Model

    Project Sunflower Seeds

    Project Sunflower Seeds thumbnail
    Solar-powered autonomous development board that allows you to grow your project from a small seed to a big, beautiful flower. AAA(10440) LiFePO4 battery as energy storage. BQ25504 Ultra Low-Power Energy Harvester

    Properties

    Properties describe core aspects of the project.

    Pricing & Availability

    Distributor

    Qty 1

    Digi-Key

    $29.36–$34.79

    LCSC

    $7.82–$8.35

    Mouser

    $4.28

    Controls