• 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

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • Cyberdeck Power Hub

    Cyberdeck Power Hub

    Cyberdeck power distribution hub using a TP4056 Type-C Li-ion charger module, MT3608 boost converter module, switched output rail, voltmeter, servo, Arduino VIN, button signal header, and battery terminal on a 50 mm × 70 mm PCB.

    A

    awillard19

    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

    3 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

    13 days ago

    0 Uses

    0 Comments

    0 Stars

  • EU Smart Environmental Sensor Node

    EU Smart Environmental Sensor Node

    Battery-powered EU-component environmental sensor node using STM32WBA BLE/802.15.4 MCU, gas/particle/CO2/environment/light/audio/camera/radar/tamper sensors, and 14.4V smart Li-ion power.

    B

    batsuev

    3 months ago

    0 Uses

    0 Comments

    0 Stars

  • 24V ESP32-C6 Matter Environmental Presence Sensor

    24V ESP32-C6 Matter Environmental Presence Sensor

    24 V DC powered ESP32-C6 Matter/Thread WiFi/BLE environmental presence sensor with USB-C programming, mmWave/PIR motion sensing, temperature, humidity, light and air-quality sensing, plus optional Li-ion battery and solar charging power path.

    U

    uli1970

    3 months ago

    0 Uses

    0 Comments

    0 Stars

  • Buck Boost Converter 3.3V 500mA

    Buck Boost Converter 3.3V 500mA

    A buck converter that can be powered from a Li-ion battery and output 3.3V @ 500mA . Powered by the TPS63051YFFR and in the same package as a converter. Input Voltage Range 2.5V to 5.5V.

    P

    prazartz

    3 months ago

    0 Uses

    0 Comments

    0 Stars

  • NF-Universal Alarm

    NF-Universal Alarm

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

    D

    dacre

    3 months ago

    0 Uses

    0 Comments

    0 Stars

  • NF-Universal Alarm

    NF-Universal Alarm

    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

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • Power Management Board

    Power Management Board

    Production-grade power management board with protected 9-18V barrel input, auxiliary USB-C 5V sink input, TPS5430 5V buck rail, BQ24074 single-cell Li-ion power-path charging, and MIC5504 3.3V battery-backed output.

    E

    emasicollins

    4 months ago

    0 Uses

    0 Comments

    0 Stars

  • ESP32-S3 AI Robot Controller

    ESP32-S3 AI Robot Controller

    Compact ESP32-S3 AI robot controller with DevKitC-1 module, 2S Li-ion power input, 5V buck regulator, optional clean 3.3V rail, TB6612FNG dual motor driver, OV2640 camera FPC, I2S audio, OLED, ultrasonic and TCRT5000 sensor headers, and a compact 2-layer PCB prepared for Gerber export.

    A

    ahsanmehmood

    4 months ago

    0 Uses

    0 Comments

    0 Stars

  • TP4056 Module

    TP4056 Module

    Reference design for Li-ion single cell charger based on TP4056 IC. Rprog setting output current to 900mA. VIN and BAT connector are block terminal connectors. #Template #module #referenceDesign #charger #TP4056 #reusable #module #batterycharger #sublayout

    E

    esila

    4 months ago

    0 Uses

    0 Comments

    0 Stars

  • Neckdown-Fixture-BQ24295

    Neckdown-Fixture-BQ24295

    This project is a reference design based on the BQ24295, a single cell Li-Ion battery charger. It manages the power between an external power source (VIN), a Li-Ion battery (BAT), and a system power rail (SYS). Key features include power-path management, battery thermistor monitoring, and charge status indication. #project #BQ24295 #ReferenceDesign #charger #BatteryManagement #referenceDesign #bms #texas-instruments #template #reference-design #polygon

    B

    brianbenchoff

    +

    U

    18 days ago

    0 Uses

    0 Comments

    0 Stars

  • 1SDv1

    1SDv1

    This is the circuit for Microdriver that is used for 3.7V Li-ion battery with Maintain and Non-maintain mode.

    R

    rnd2

    4 months ago

    0 Uses

    0 Comments

    0 Stars

  • ESP32 Door Access Controller

    ESP32 Door Access Controller

    ESP32-S3 door access controller with USB-C Li-ion charging, VBAT and 12V lock power, dual 3.3V rails, I2C sensor headers, reed/PIR inputs, LED indicators, buzzer, and MOSFET plus relay lock outputs. External modules and field devices remain represented by connector placeholders with documented pinouts for later PCB and validation work.

    H

    hyrunk

    4 months ago

    0 Uses

    0 Comments

    0 Stars

  • Marine GPS Timing Communicator Stacked

    Marine GPS Timing Communicator Stacked

    4-layer marine GPS timing and communication device using nRF52840, u-blox ZED-F9P GNSS with external active antenna via u.FL, 915 MHz LoRa radio, Li-ion battery with USB-C charging, separate clean GNSS LDO and digital 3.3V rail, SPI memory LCD, RGB LEDs, buzzer, and 6-axis IMU. PCB target is a 70 mm circular layout with strict RF zoning, dedicated ground plane, 50 ohm RF traces, physical separation between GNSS and LoRa, and low-noise placement suitable for harsh marine environments.

    G

    googs

    4 months ago

    0 Uses

    0 Comments

    0 Stars

  • ESP32 PPG Battery Device

    ESP32 PPG Battery Device

    Battery-powered ESP32-WROOM-32 design with MAX30102 PPG sensor, MCP73871 single-cell Li-ion charging and power-path management, 3.3V regulation, and two low-current output terminals.

    S

    solvinn

    +

    U

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • kayak mishiz

    kayak mishiz

    Compact kayak and canoe impact sensor PCB with USB-C Li-ion charging, ATmega328P-AU control, ADXL345 breakout sensing, 3.3V regulated power, OLED and ISP headers, and corner mounting holes.

    B

    bsmnt

    5 months ago

    0 Uses

    0 Comments

    0 Stars

  • Kayak Impact Sensor a953

    Kayak Impact Sensor a953

    Compact kayak and canoe impact sensor PCB with USB-C Li-ion charging, ATmega328P-AU control, ADXL345 breakout sensing, 3.3V regulated power, OLED and ISP headers, and corner mounting holes.

    M

    mattia46

    5 months ago

    0 Uses

    0 Comments

    0 Stars

  • Pico GPS Tracker

    Pico GPS Tracker

    Portable Raspberry Pi Pico and NEO-6M GPS tracker powered by a single-cell Li-ion battery, with USB-C charging input, CC resistors, and USB-line ESD protection. Designed to support about 65 mA active current and roughly 30 hours from a 2000 mAh cell, following the performance targets from the evaluation paper.

    A

    ayazdadavali

    5 months ago

    0 Uses

    0 Comments

    0 Stars

  • DeWalt 21V 5S Experimental Charger

    DeWalt 21V 5S Experimental Charger

    Experimental 21V/5S Li-ion DeWalt battery charger with 21V DC input, relay-switched charge path, tap monitoring, ESP32-WROOM external controller interface, test header, and 2-layer prototype PCB intent.

    1

    19002041

    5 months ago

    0 Uses

    0 Comments

    0 Stars

  • Above Violet R2-D2

    Above Violet R2-D2

    Compact 2S Li-ion charger for Sony NP-FZ100 battery using DC input, 8.4 V CC/CV charging, automatic termination, reverse polarity, overvoltage, overcurrent, and thermal protection, with defined B+ and B- battery outputs and PCB-buildable component choices.

    M

    maheshsai123

    5 months ago

    0 Uses

    0 Comments

    0 Stars

  • Striped Silver Heat-Ray

    Striped Silver Heat-Ray

    Compact wearable smart cat collar PCB focused on ultra-low power, miniaturized size, curved-edge waterproof-friendly mechanical fit, GNSS tracking, motion sensing, RFID compatibility, Li-ion charging, and robust mass-production readiness.

    Y

    yanghaorun

    5 months ago

    0 Uses

    0 Comments

    0 Stars

  • Led lampa uznemej 1

    Led lampa uznemej 1

    6S Li-ion USB-C charged 40V/0.75A PWM-dim LED driver with 433MHz remote

    U

    uznempet

    5 months ago

    0 Uses

    0 Comments

    0 Stars

  • EEG Digital

    EEG Digital

    Two-PCB low-noise EEG system: Digital board (ESP32-S3-MINI-1U + ADS1299 + CP2102N + USB-C + 1S Li-ion charger/power-path + DF40 mezzanine) and Analog board (3x ADS1299 + REF/BIAS/DRL + driven-shield electrode interfaces + local low-noise regulation + test points). DF40 mezzanine carries only power + digital SPI/control with shared SPI, shared START/RESET, and separate CS/DRDY per AFE. 4-layer stacks with strong analog/digital partitioning and interleaved GND pins on DF40.

    T

    theemeraldhunter

    6 months ago

    0 Uses

    0 Comments

    0 Stars

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