relay-control

Open-source modular DIN-rail home automation and sensor. ESP32-S3 core with Ethernet, Zigbee, RS485. 9 I/O modules via I2C: relays, contacts, energy meter, sprinklers. ESPHome-based, integrates Home Assistant. Low-voltage, cabinet-oriented. Built for learning & customization.

Advanced ESP32 brewing and fermentation controller with adaptive PID temperature control

This is an ESP8266-based aquarium controller providing web-based management of 4 relay outputs. It features multiple control modes (manual, scheduled, timer, toggle), OTA updates, time synchronization, and persistent settings storage. Built with AsyncWebServer and LittleFS, it offers a responsive web UI and RESTful API for remote control.

🛋️📺 Control your 230V lamp with any IR remote using Arduino | No WiFi, no cloud, just pure lazy genius | DIY home automation that actually works

PowerControlHub is a flexible automation controller for 12V systems. It combines relay switching, sensor monitoring, and smart‑home connectivity (MQTT, Home Assistant, REST, BLE) into one device. Ideal for boats, campers, off‑grid cabins, basements, and DIY smart‑home projects, it works as a standalone sensor hub or a full power‑control system.

This is an ESP8266-based aquarium controller providing web-based management of 2 relay outputs. It features multiple control modes (manual, scheduled, timer, toggle), OTA updates, time synchronization, and persistent settings storage. Built with AsyncWebServer and LittleFS, it offers a responsive web UI and RESTful API for remote control.

ESP32-S3 4-port RS485 Modbus demo board with web console, boot self-test, relay control, sensor reading, and verification logs.

Safety-oriented ESP32 relay automation system built with object-oriented C++ and PlatformIO.

ESP32-based smart aquarium controller with web interface, automated scheduling, temperature monitoring, and email notifications for managing lights, pumps and wave makers.

Windows 本地 USB 串口继电器控制工具，支持 Electron 桌面版与 Chromium Web Serial 浏览器版，基于 Vue 3 + TypeScript + Node SerialPort，已实机验证 CH340 + LCUS-1 单路 USB 继电器。

Autonomous pool filtration pump controller for Arduino — PCF8574 relay expander, solar heating, freeze protection, dry-run and overcurrent detection · APA Devices

Automatic Light Controller using CD4017, LM358, IR Sensor, and Relay for smart home appliance automation and energy-efficient lighting control.

An ESP8266-based smart irrigation system with soil-moisture monitoring, automatic pump control, and a local web dashboard.

Embedded firmware for a programmable timer power socket. Relay switching, schedule control, EEPROM storage, custom PCB. Achieves 40% standby energy reduction.

Local-first ESP32 smart home firmware with Tasmota32 OTA migration support, MQTT control, BLE integrations, energy monitoring, templates, and a modern web UI.

Drop-in replacement board for a residential RO purifier. Sequenced inlet/pump/UV cycle, TDS monitoring, dual filter life in EEPROM, relays that default off on power loss.

Water Sump Pump Countdown Timer designed for SLAC

Arduino Uno water-level monitoring and pump controller with HC-SR04, 16×2 LCD, and relay-based pump control. Wokwi-validated and designed as a 2-layer PCB in KiCad 10.

An intelligent automated irrigation system with dual implementation: Arduino and Assembly language

An IoT-based smart device to help users take medications on time with timely reminders and remote monitoring.