Beginner-prototype solar bee monitor central controller using a plug-in 38-pin ESP32 NodeMCU-32, breakout sensor interfaces, switched camera and gate power, RS-485, monitored rails, and isolated safety-critical 2S charging/protection interfaces pending fully verified implementations.

ESP32-S3 controller for a large-format camera focus axis, with a socketed TMC2240 stepper driver, DVP camera, SPI display and microSD, muxed I²C expansion, USB-C, and protected 12 V/5 V/3.3 V power domains.

Production-intent ESP32-C6 controller for WS2812B/WS2815 addressable LED strips with 5V/10A input protection, strip high-side switching, 5V data level shifting, user buttons, and antenna keepout requirements.

Compact USB-C 5 V smart film sample controller that generates a selectable 60–80 VAC bipolar output for up to about 1 ft² of PDLC film, with automatic 1 s clear / 1 s frosted cycling and safety-focused high-voltage design.

ESP32-based USB-C powered controller for four 5 V / 1 W heater strips, with PCB-mounted safety and ambient temperature sensing, OLED UI, rotary encoder, RGB status LED, and cost-conscious reliability/protection design.

Presentation concept PCB for an ESP32-S3 controlled 10-battery configurable controller with USB-C programming, monitoring, MOSFET switching placeholders, UI, controlled output, and clearly marked conceptual battery matrix sections.

Four-layer ESP32-S3 robotic leak-detection and pipe-marking controller with protected 12 V distribution, high-current 5 V power, microphones, servos, marker motor driver, TB6600 control, and myRIO UART.

SeedSphere Smart Agriculture Controller

Low-cost rechargeable LiPo BBQ/smoker fan controller using an ESP32-C6, K-type thermocouple input, BLE/Wi‑Fi phone connectivity, and PWM fan output.

ESP32 Battery Management System Controller Board – An innovative solution for smart power control and audio recording integration. This cutting-edge board harnesses the power of the ESP32 microcontroller to deliver precise battery management and seamless integration with an S3 Voice Recorder subsystem. Perfect for advanced IoT applications, the board’s robust design ensures reliable energy optimization, remote monitoring, and real-time performance coupled with high-quality voice recording capabilities. Experience enhanced connectivity, efficient power regulation, and smart audio functionality, all in one compact package that paves the way for next-generation smart devices. #ESP32 #BatteryManagement #VoiceRecorder #IoT #SmartDevices #ControllerBoard

ESP32 Battery Management System Controller Board – An innovative solution for smart power control and audio recording integration. This cutting-edge board harnesses the power of the ESP32 microcontroller to deliver precise battery management and seamless integration with an S3 Voice Recorder subsystem. Perfect for advanced IoT applications, the board’s robust design ensures reliable energy optimization, remote monitoring, and real-time performance coupled with high-quality voice recording capabilities. Experience enhanced connectivity, efficient power regulation, and smart audio functionality, all in one compact package that paves the way for next-generation smart devices. #ESP32 #BatteryManagement #VoiceRecorder #IoT #SmartDevices #ControllerBoard

This project is a Pulse Width Modulation (PWM) Controller, built around an LM555 timer IC. It controls a load connected to a MOSFET, with adjustments via a potentiometer, and uses capacitors, resistors and diodes for various functions. #PWM #controller #project #Template #projectTemplate

2-layer 415V agricultural motor starter controller with STM32, 4G modem, relay control, current/voltage sensing, and isolated field inputs.

Functionally similar multi-channel electronic lock controller with 24 V lock outputs, 3.3 V logic, MCU control, shift-register expansion, CAN interface, test/reset controls, and protected solenoid driver stages.

ESP32-S3 Industrial PLC Controller schematic architecture for a 24 V industrial PLC with W5500 Ethernet, isolated RS485, 8 opto-isolated digital inputs, and 8 protected high-side outputs.

ESP32-S3 controller board with independent DATA outputs and shared CLK for multi-port LED/control outputs, powered and programmed over USB-C.

IP67 Australian 240 VAC spa-light controller focused on isolated SELV control electronics, optical programming, hold-up power, mains-present sensing, and relay coil drivers.

Industrial 24 V DC MESBox controller with embedded Linux SOM, STM32 real-time I/O, triple RJ45 Ethernet, TFT display, isolated inputs, protected transistor outputs, offline memory, surge/reverse-polarity protection, and EMC-focused layout constraints.

ESP32-S3 automotive controller with shared-ground CAN bus, USB serial/programming, protected 12 V input, and optocoupled PWM low-side control for an active exhaust valve.

Compact 2-layer BLE pneumatic valve controller for a 12V campervan leveling valve block with two low-side solenoid drivers.

STM32F103-based GLECS V4 pure logic controller with 12V input power tree, onboard 4G module, isolated relay control zone, sensors, OLED, debug headers, and 200x140mm two-layer PCB requirements.

Autonomous black pepper harvesting robot electrical control system with ESP32 controller, ESP32-CAM vision, A4988 stepper drives, PCA9685 servo control, sensors, E-stop, 12V battery input, and 5V power distribution.

Industrial motor controller PCB with 12V relay switching zone isolated from STM32/4G LTE logic zone by a routed vertical isolation slot on a 150x100mm 2-layer FR4 board.

ESP32-S3 USB-C powered controller with eight user key buttons, native USB programming, 3.3V regulation, boot/reset controls, and firmware/bring-up documentation.

ESP32-C3 based controller for two 5 V, 150 mA servos from a 9–32 V DC input. Uses an LMR51625 buck regulator for the 5 V rail and derives 3.3 V logic power for the ESP32-C3.