48V tether-powered Ethernet-to-WiFi bridge using Blue Robotics Fathom-X style tether interface and ESP32-S3 WiFi output, with isolated/buck DC/DC rails for the tether interface and ESP32.
INA3221 current and voltage monitor interface for an HC-SR04 ultrasonic sensor, with 5V sensor power routed through a shunt and I2C output to a host MCU.
Fully integrated Arduino Uno shield with 13.56 MHz RFID reader, microSD card interface, isolated relay output for a 120 VAC signal circuit, and 28 VDC to 5 V buck power input.
ESP32-centered controller PCB with 14.8 V battery bus, external 3.3 V and 12.2 V buck converter interfaces, motor logic headers, and servo driver connections.
ESP32-S3 based controller for a DMX-controlled motorized pan/tilt mirror head with Dynamixel servo control and GPS solar tracking. This step establishes the MCU, USB-C flashing/debug interface, reset/boot circuitry, and status LED on a 3V3 rail.
Single M5Stack Cardputer ADV HAT integrating CC1101 sub-GHz radio, nRF24L01+ PA/LNA 2.4GHz radio, LoRa RA-02, and PN532 NFC with shared host interface, 3.3V power distribution, decoupling, and RF layout constraints.
Pixhawk V6X Base and Core Board reconstruction workspace for capturing/importing the flight controller base board and core board schematic, interfaces, and layout constraints.
Professional-grade STM32F407 dual-motor tape tension controller with precision load-cell ADCs, CAN interfaces, ESP32 wireless coprocessor, USB-C, external memory, and protected 12–24 V power architecture.
UK Smart Wall Switch Back Board: 802.3af PoE-powered 65x65mm relay and energy-monitoring back board with RJ45, isolated 5V/3.3V rails, W5500 Ethernet, BL0942 metering, touch ICs, and 12-pin pogo interface.
Manufacturable Rev A proof-of-concept PCB system for the SOLX modular magnetic lamp platform, documenting a standardized magnetic pogo-pin electrical pass-through interface, 12V low-voltage power transfer, reserved data/ID contacts, module identification support, automatic configuration recognition, lifecycle metadata tracking capability, and patent-supporting manufacturing/test documentation.
Smart weighing + vision recognition controller using a Seeed XIAO ESP32-S3, Grove Vision AI V2 connected only by 3V3/GND/SDA/SCL, and a simple four-pin ESP32-S3 expansion interface for D2/GPIO3 and D3/GPIO4; no onboard HX711 or load-cell connector.
