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    Assets

    Aerospace Template Thumbnail (3).png

    Aerospace Template Thumbnail (3).png

    Aerospace Template Thumbnail (3)Thumbnail

    Audio Electronics | Copilot Preset

    Audio Electronics | Copilot Preset thumbnail
    Servo Control Module with Battery Protection and UI for 100×60×50 mm Enclosure

    Properties

    R8

    Audio

    U2:VOUT → J1:5V

    J1

    OLED at top center, buttons "+" and "−" positioned 15 mm below the OLED

    100 × 60 × 50 mm

    10×6×5 cm

    Left 40 mm reserved for power subsystem; right 40 mm reserved for signal and UI; ensure tube channel 100×20 mm on rightmost edge

    C3 (U3 VIN bulk)=10μF near U3 VIN (bulk), C4 (U3 OUT)=1μF at U3 OUT, C5 (U4 VDD)=100nF close to U4 VDD, C6 (U4 VDDA)=100nF close to U4 VDDA, all X7R 0402. Role: Decoupling, placement: as close as possible to respective IC pins

    5 min up to 300 min

    Diagram
    


  
    
  
  
    
  


















I2C

PWM

ADC

GPIO

GPIO

GPIO












Li-ion node_1S Battery
USB-C Charger IC
Voltage Divider & Brown-out Detect
Boost Converter node_5V
LDO 3.3V Regulator
Microservo
Microcontroller
OLED I2C Display
Button +
Button −
Button Info
TVS & Fuses

    Brown-Out Detector settings; VBAT voltage-divider design for ADC measurement; I2C pull-up resistor configurations; Decoupling capacitor placement and values

    U4:PA9 → R8 → J1

    U4:PA9

    Threshold 2.7V, Recovery 2.9V, 10 ms debounce; STM32 BOD + software filtered

    No ERC issues detected for decoupling_caps, pull_up_pull_down, resistor_power_rating, and capacitor_voltage_rating.

    100 × 60 mm

    mm

    PWM output from MCU (U4:PA9) passes through series resistor (R8) before reaching the servo connector (J1) for signal integrity and protection.

    1–10 min (default 2 min)

    0.5–1 A

    A

    R3=100kΩ, R4=33kΩ, Ratio 0.248, Voltage Range 0–4.2V Li-ion mapped to 0–1V ADC, Pin=U4:PA1

    R1 (SCL)=4.7kΩ, R2 (SDA)=4.7kΩ, 0402 package, Nets: SCL=U4:PA9 & OLED SCL; SDA=U4:PA7 & OLED SDA

    100×20 mm zone at the right lateral edge of the PCB

    RoHS, FCC, CE

    12V

    -40 ºC to 85ºC

    LED, Potentiometer

    Bluetooth 5.0, 3.5mm Jack, Screw Terminals

    Class D

    Line-level from standard audio source

    2 (stereo)

    THD of less than 0.1% at full power

    20Hz to 20kHz

    Hz

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $4.89–$7.90

    Digi-Key

    $6.87–$11.00

    LCSC

    $12.11–$12.18

    Mouser

    $15.31

    TME

    $11.71

    Verical

    $1.88–$5.35

    Controls