• Light Pendant V2

    Light Pendant V2

    25 mm circular BLE wearable pendant for ambient-light tracking using an ISP1807 module, AS7343 sensor, USB-C LiPo charging, and SWD programming pads.

    J

    jeffenk

    9 days ago

    0 Uses

    0 Comments

    0 Stars

  • Mini Retro TV b2ba 382f

    Mini Retro TV b2ba 382f

    Production-oriented 2-layer PCB for a desktop mini CRT-style collectible using an ESP32-C3 Mini module, USB-C LiPo charging, ST7789 TFT display, 3 Hall sensors, eject button, piezo buzzer, and battery monitoring.

    S

    spalter

    25 days ago

    0 Uses

    0 Comments

    0 Stars

  • Mini Retro TV b2ba

    Mini Retro TV b2ba

    Production-oriented 2-layer PCB for a desktop mini CRT-style collectible using an ESP32-C3 Mini module, USB-C LiPo charging, ST7789 TFT display, 3 Hall sensors, eject button, piezo buzzer, and battery monitoring.

    S

    spalter

    25 days ago

    0 Uses

    0 Comments

    0 Stars

  • DECT NR+ Intercom Beltpack

    DECT NR+ Intercom Beltpack

    Open-source rechargeable DECT NR+ wireless intercom beltpack prototype for four church operators, focused on low-latency speech, external headset/PTT, removable 18650 power, USB-C charging, and development-oriented test access.

    D

    d3nn15

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • THRUSTER ARC CORE V1

    THRUSTER ARC CORE V1

    Circular ESP32-C3 wearable smart-device PCB with Li-ion charging, USB-C programming, Qi/NFC connectors, and a 16-LED RGB ring.

    A

    ajayte

    14 hours ago

    0 Uses

    0 Comments

    0 Stars

  • ESP32 Pickleball Tracker

    ESP32 Pickleball Tracker

    Compact ESP32-C3 battery-powered pickleball telemetry tracker with high-g IMU, local flash buffering, USB-C LiPo charging, and Wi-Fi/BLE data transmission.

    S

    squidd

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • BLE RGB LED Display

    BLE RGB LED Display

    Compact rechargeable BLE controller board with a 4x8 RGB LED display, USB-C LiPo charging, battery protection assumptions, and firmware-controlled LED current limiting.

    S

    sullys

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • ESP32-S3 AI Voice Assistant Dev Board

    ESP32-S3 AI Voice Assistant Dev Board

    Portable ESP32-S3 AI voice assistant development board with USB-C programming, LiPo charging, OLED, I2S microphone/amplifier, SPI flash, and microSD expansion.

    D

    dwi-ferdianto

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • AI Spectral Reflectance Analyzer

    AI Spectral Reflectance Analyzer

    Portable AI-powered spectral reflectance analyzer based on a Radxa Zero 3W carrier PCB, with AS7341 spectral sensing, GPS, SPI touchscreen LCD, microSD logging, USB-C LiPo charging, and integrated optical LED measurement head.

    N

    nasem007

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • BYTO Premium Digital Badge

    BYTO Premium Digital Badge

    Architecture-first BYTO Premium V1 wearable digital identification badge: vertical 102×62×9.5mm target, reflective e-paper display, BLE-only certified nRF52840-module direction, protected 1S Li-Po, magnetic pogo dock charging, no USB-C on badge. Schematic and PCB work remain gated by step-by-step architecture approval.

    D

    digitalbadge

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • HyperPulse Blade 2

    HyperPulse Blade 2

    Ultra-compact 30 mm × 22 mm, 4-layer wearable sports tracker using Nordic nRF5340 BLE 5.4, motion/environment/optical/GPS sensing, external U.FL antennas, 250 mAh LiPo battery, Qi wireless charging only, and sub-50 µA target sleep current.

    W

    warmsnowman831

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • Wearable EEG BCI Acquisition Board

    Wearable EEG BCI Acquisition Board

    Wearable 8-channel EEG/BCI acquisition board with ADS1299, STM32L152, ESP32 Wi-Fi/Bluetooth, LiPo charging, USB-UART, microSD logging, and 4-layer mixed-signal layout constraints.

    B

    binyhan

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • CM5 Handheld Voice Assistant

    CM5 Handheld Voice Assistant

    Phone-sized handheld voice assistant built around a Raspberry Pi Compute Module 5 carrier PCB with battery power, USB-C charging, microphones, speaker, small display, wireless connectivity, and user buttons for local voice-assistant and edge-AI workloads.

    J

    joca2

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • Regenerative Braking Charger

    Regenerative Braking Charger

    Regenerative braking power generation and charging circuit using two DC motor generators, rectification, TVS protection, supercapacitor buffering, a 2S Li-ion buck-boost charger, BMS protection, and regulated 5 V/3.3 V load rails.

    E

    evomtk067

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • USB-C LiPo PIR Sensor

    USB-C LiPo PIR Sensor

    Battery-powered infrared/PIR sensor board with USB-C charging, single-cell LiPo battery input, 3.3 V regulation, sensor output header, and status indicators.

    I

    iamsoroush

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • 52mm Biomedical BLE Smartwatch

    52mm Biomedical BLE Smartwatch

    Professional-grade ultra-low-power 52 mm circular BLE smartwatch PCB with biomedical sensing, AMOLED display, USB-C charging, and 6-layer RF/mixed-signal layout constraints.

    1

    12eda

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • Blue AI Figurine PCB

    Blue AI Figurine PCB

    Custom base PCB for a Blue AI figurine with ESP32-S3 Wi‑Fi/BLE, I2S microphone and speaker audio, LiPo battery charging, eye LEDs, and expansion wiring into the figure.

    B

    blueai

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • Desktop Robot Cat Companion fc95

    Desktop Robot Cat Companion fc95

    Single-board ESP32-S3 desktop robot cat companion with ST7789 display, touch pads, IMU, MicroSD, and USB-C Li-Po charging.

    K

    kainrav

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • Smart Tee Marker Robot Controller

    Smart Tee Marker Robot Controller

    2-layer single-cell Li-ion robot controller with BU01 UWB module socket, ESP32 Wi-Fi uplink, dual motor driver, isolated 5 V boost rails, onboard charging, status LEDs, and sensor connectors.

    P

    parnmanas

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • MotoCluster RevA d8d6

    MotoCluster RevA d8d6

    EV motorcycle instrument cluster using STM32H743IIT6 main MCU, display interface, CAN, USB, charging, and power supervision

    G

    ggum

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • ESP32-C3 Optical Clip

    ESP32-C3 Optical Clip

    Two-board ESP32-C3 optical clip with USB-C LiPo charging, OLED display, red/IR LEDs, and remote phototransistor receiver.

    A

    a01743659

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • AeriSense db00

    AeriSense db00

    Compact ESP32-S3 wearable environmental monitor with BME688 sensing, LiPo charging, MAX17043 fuel gauge, USB-C power, and JLCPCB-ready 4-layer layout constraints.

    S

    seheja

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • NF-Dual Output Buck

    NF-Dual Output Buck

    Best-effort NF-UNIVERSAL ALARM schematic recreation from image, with MCP73831 Li-ion charging, dual 555 timers, transistor switching, LEDs, switches, and flagged uncertainties.

    F

    fatenerris

    +

    U

    3 days ago

    0 Uses

    0 Comments

    0 Stars

  • FJ Solar Compass Display

    FJ Solar Compass Display

    Solar-powered dashboard compass for an FJ with a 3-digit seven-segment direction display, magnetometer sensing, low-power MCU control, rechargeable battery storage, and solar charging.

    B

    brooks

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • Automotive 240W USB PD Charger

    Automotive 240W USB PD Charger

    Automotive 12V input USB charger board with 2× USB-C PD source ports rated 100W each and 2× USB-A Quick Charge outputs, designed for charging only with high-current automotive input protection and power conversion.

    T

    tomitu

    3 months ago

    0 Uses

    0 Comments

    0 Stars

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