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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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Component Selection Workflow
New Subsystem Wizard
Write I2C initialization code
Generate firmware skeleton
U4 - GPIO Expander
H4
H1
H3
H2
R4
Resistance
1kΩ
R3
Resistance
100kΩ
TX
J1 - Programmer Connector
R8
Resistance
220 Ω
R6
Resistance
22kΩ
RX
R7
Resistance
220 Ω
RX
R9
Resistance
220 Ω
R1
Resistance
22kΩ
R5
Resistance
22kΩ
~Reset
TX
~Reset
C4
Capacitance
1uF
C8
Capacitance
0.1uF
LED2
U1 - Voltage Regulator
Q1
C1
Capacitance
0.33uF
C3
Capacitance
1uF
5VCC
5VCC
Q2
BAT2
J2 - Motor Connector
5VCC
C6
Capacitance
0.1uF
C7
Capacitance
0.1uF
C2
Capacitance
0.1uF
5VCC
LED3
LED1
5VCC
C5
Capacitance
1uF
5VCC
5VCC
BAT3
BAT1
R2
Resistance
10kΩ
U3 - L293D
U2 - ATmega328
Not Recommended for New Designs

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    Little Hardware Controller

    Little Hardware Controller thumbnail
    This circuit can take an analog input, control a DC gearmotor, sense its direction and cumulative number of revolutions, and turn on and off three LEDs, in whatever way it is programmed. It can be repeatedly reprogrammed through a connector on the PCB. Powered by six AA batteries, it economizes on power by disconnecting some components when they are not in use.

    Properties

    Properties describe core aspects of the project.

    Pricing & Availability

    Distributor

    Qty 1

    Digi-Key

    $15.13–$35.10

    LCSC

    $12.29–$16.67

    Mouser

    $14.76

    Controls