USB-C powered ESP32 WiFi water-flow-meter controller for an external 12V RS485 ultrasonic sensor on 3/4 inch PVC pipe, with protected power input, 3.3V logic rail, 12V boost rail, programming header, reset/boot controls, and status LEDs.

Wearable coin-cell peripheral nerve-field stimulator reverse-engineering schematic with boost stimulation rail, micro-USB, electrode outputs, and bottom return ring contact.

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.

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.

Переходная плата питания и интерфейсов: USB-C 5В вход, boost 12В для VM TMC2208, стабильные 5В/3.3В, разъёмы WT32-SC01 Plus, NEMA17, TCRT5000 и NAU7802.

Unconnected DER-920 65 W offline LED ballast component schematic grouped by input/EMI, PFC boost, isolated flyback, secondary control/dimming, and connectors. Components are intentionally not wired yet.

Compact ESP32-S3 USB-to-WiFi bridge with USB-A programming/host data, USB-C charging input, LiPo power path, 3.3V buck, and 5V boost

USB-C powered ESP32 WiFi water flow meter schematic with protected 5V input, 3.3V LDO, 12V boost supply for an external RS485 ultrasonic sensor, UART programming header, boot/reset network, and three status LEDs for power, WiFi, and flow activity.

Solar-powered ESP32-C3 predator deterrent with PIR trigger, 5 V LED boost driver, audio amplifier, battery charging, and 60 mm x 45 mm 2-layer hand-solderable layout.

This circuit is an ultrasonic distance meter based on an ATTiny2313 microcontroller. It uses an HC-SR04 ultrasonic sensor to measure distance and displays the results on an OLED display. The power supply is constructed using a Boost converter (TPS613222A) and a 2-cell AA battery. Additionally, it also includes ISP for programming, RESET and START switches, and LED indicators. #project #Template #projectTemplate #ultrasonic #OLED #arduino #attiny2313 #TPS613222A #ISP #referenceDesign #simple-embedded #microchip #template #reference-design .

Compact 2-layer ESP32-S3-MINI-1 piezo TX/RX board for a shared 3 MHz transducer node. Includes USB 5 V input, TP4056 single-cell LiPo charging, TLV75533 3.3 V regulation, ferrite-bead isolated 3V3_ANALOG rail, ~12 V pulsed TX boost rail, low-gate-charge NMOS transmit driver, clamp-protected RX input, 2-stage OPA836 analog receive chain, envelope detector, ADC interface, TMP117 I2C temperature sensor, and status LEDs. Layout intent: piezo centered, RX chain within 10 mm of PIEZO_NODE, boost section remote from RX, digital and analog partitioning, and AGND/DGND star connection near RX front end.

Hybrid EEG BCI for Pluto X v1.1 using ESP32-WROOM-32 and ADS1299-6PAG with LiPo charging, 5V boost, -5V analog rail, split 3.3V analog/digital regulators, six EEG channels, RC electrode protection, and 80x60mm mixed-signal PCB constraints.

Wearable closed-loop ultrasonic monitoring and transcutaneous neuromodulation system based on ESP32-C3, powered from a 7.4 V 1000 mAh LiPo battery with TP4056 charging, MT3608 boost conversion, AMS1117-3.3 regulation, JSN-SR04T ultrasonic sensing, LED and buzzer alerts through a BC547 driver, and a reserved neuromodulation interface for future integration.

PS5-Diagnose-Power-Supply-Stick - Battery boost 12V + ESP32 control

Bee Venom Collector - USB-C charged Li-ion + 24V boost + ATtiny85 control

Rechargeable Non-Lethal Bee Venom Stimulator with TP4056 Charging, MT3608 Boost to 9–12 V, NE556 Dual-Timer Pulse Control, and NPN Output Drivers on Single-Layer Through-Hole PCB #LiIon #USBCharge #Boost #NE556 #NPNDrivers #ThroughHolePCB

USB-Powered Seeed Studio XIAO nRF54L15 Module as Electrically Isolated Placeholder from TPS61088 Boost Converter Section

Battery-Powered Audio/Bluetooth System with External TP4056 Charging, Dual MT3608 Boost Rails, and Star-Grounded Power Domains

1S LiPo USB-C Power Management and 3.3V Regulation Subsystem with SIM800L Modem, TPS61088 5V Boost for MAX98357A Audio and W25Q32 SPI MP3 Storage

Experience the future of networking with the PCB Business Card V2 – a state-of-the-art smart business card designed to boost your professional presence. This innovative PCB integrates advanced NFC technology to instantly connect contacts to your digital portfolio while showcasing a suite of highly optimized hardware modules. > Enjoy precise 13.56MHz tuning, larger and clearer instructional fonts, and enhanced backside features for seamless setup and practical usage. Whether you're at tech expos, business conferences, or networking events, this sleek design offers detailed build instructions and an optimized bill of materials to elevate your DIY electronics experience. Step into next-generation personal branding and make a memorable impression with this cutting-edge smart business card. #SmartBusinessCard #NFC #PCBDesign #TechInnovation #Networking #DIYElectronics

A buck boost converter that can be powered from a Li-Ion battery and output 3.3V @ 500mA. Powered by the TPS63051YFF and in the same package as a standard Adafruit buck converter Input Voltage range: 2.5V to 5.5V

Buck Boost 3.3V 500mA. Output 3.3V @500mA.

This is a boost converter board based on LM3481 with 5V input and 12V 1.8A output voltage #dcdc #boost #ti #power #referenceDesign #powermanagement #texas-instruments #template #reference-design

Experience the future of networking with the PCB Business Card V2 – a state-of-the-art smart business card designed to boost your professional presence. This innovative PCB integrates advanced NFC technology to instantly connect contacts to your digital portfolio while showcasing a suite of highly optimized hardware modules. Enjoy precise 13.56MHz tuning, larger and clearer instructional fonts, and enhanced backside features for seamless setup and practical usage. Whether you're at tech expos, business conferences, or networking events, this sleek design offers detailed build instructions and an optimized bill of materials to elevate your DIY electronics experience. Step into next-generation personal branding and make a memorable impression with this cutting-edge smart business card. #SmartBusinessCard #NFC #PCBDesign #TechInnovation #Networking #DIYElectronics

Etapa 1: Recolección y Almacenamiento de Energía Entrada: tus cactus en serie (ej. 15 cactus × 0.5 V = 7.5 V). Componente clave: Supercapacitor o batería recargable de baja capacidad (Li-ion o LiFePO4, 3.7V-7.4V). Diodo Schottky entre los cactus y el capacitor para evitar descarga inversa. 🛠 Ejemplo de componentes: Supercapacitor de 5–10 F, 5.5 V o batería de 3.7 V (tipo 18650). Diodo Schottky 1N5819. Módulo cargador TP4056 (si usas batería). Etapa 2: Aumento de Voltaje (Boost Converter) Conversión de 3.7 V / 7.5 V DC a 110 V AC. Necesitas: Boost Converter (DC-DC Step-up) de hasta 300 V DC. Inversor DC-AC (pequeño, tipo mini inverter para LEDs) que convierta ese voltaje a 110 V AC. NOTA: Algunos focos LED pueden funcionar con 110 V DC directamente, si quieres evitar el inversor. Etapa 3: Detección de Noche Sensor LDR (resistor dependiente de luz) conectado a un comparador (ej. LM393) o a un microcontrolador (como un ATtiny o ESP8266 si quieres funciones extra). Al bajar la luz solar: El comparador activa un MOSFET o un relé que conecta la energía almacenada al foco.