Apply sound data-based anomalous behavior detection, diagnose the root cause via object detection concurrently, and inform the user via SMS.

Build a wireless, portable smart-home control tablet

Automatische Bewässerungssteuerung für bis zu 4 Pflanzen mit ESP8266 und Home Assistant Integration. ✅ 4x Kapazitive Bodenfeuchte-Sensoren (korrosionsbeständig) ✅ 4x Pumpen mit individueller Steuerung ✅ Wassertank-Füllstandsüberwachung mit Schwimmer ✅ 2x Hardware-Buttons für Standalone-Betrieb Betriebsmodi: • AUTO: Kontinuierliche Überwachung, automatisches Bewässern bei Bedarf • MANUELL: Pumpensteuerung über Schalter • NOTAUS: Automatisch bei leerem Tank Sicherheit: • Interlock - nur 1 Pumpe gleichzeitig aktiv • Timeout-Schutz gegen Überflutung • Keine Pumpenaktivierung ohne Wasser Alle Parameter über Home Assistant einstellbar (Schwellenwerte, Bewässerungsdauer, Intervalle). Komplette Logik läuft auf dem ESP - keine HA-Automationen erforderlich. Hardware: ESP-01, MCP23017, ADS1115, MOSFETs PCB: 2-Layer, 97x76mm, komplett Open Source

Lightweight ESP32-based IoT module for remote data logging enabling the collection and upload of 3D printing statistic values to a cloud server, as well as displaying them locally on a dedicated display. The project also involves extending the Marlin project by adding a custom G-code command at the firmware level.

In this project, we’ll turn the Elecrow 7" ESP32-S3 HMI display into a complete UPI payment interface for a vending-machine-style system. You’ll learn how to design the UI in SquareLine Studio, generate a dynamic UPI QR code based on selected items, and print a payment receipt using a thermal printer — all driven by a single ESP32-S3 board.

A Retro-Futuristic clock combining dual LCDs, 3-bit filament LEDs, and WS2812 effects—blending cyberpunk style with steampunk warmth.

In this comprehensive tutorial, we will delve into the intricate process of integrating a DHT11 temperature and humidity sensor with the XIAO ESP32C3 microcontroller, enabling the publication of sensor data via a built-in Modbus TCP server. Furthermore, we'll explore how to access and interpret this data using a Modbus client application.

OmniFire is an intelligent autonomous robot capable of detecting and extinguishing fires using dual fire extinguishers, 12 ultrasonic sensors, and omnidirectional Mecanum wheels. Powered by an Arduino–Raspberry Pi hybrid control system, it combines precision motion, real-time environment mapping, and autonomous fire suppression for safety applications in homes, factories, and labs.

This project presents an IoT-Based Smart Energy Cost Monitoring System for Electric Motorcycles, designed to provide real-time insights into power consumption and operational costs as a sustainable alternative to fuel. The system is built around the ESP32 microcontroller, which serves as the core for data acquisition and wireless connectivity. Power usage is precisely measured using the HLW8012 energy metering sensor, while a 20x4 LCD display delivers instant on-device feedback for the user

An educational robot car that uses a mecanum wheel and is controlled with a PS3 controller!

Distributed system for monitoring and controlling greenhouses

PRAVESH is an IoT-driven RFID gatekeeper that revolutionizes campus access with seamless, secure, and paperless entry—delivering real-time logs and instant automated approvals.

Autonomous LoRaWAN node easily connectible via TTN/Helium networks, supporting downlinks. LaRaWAN node based on Seeed Studio' Wia-E5 module (based STM32WLE), so no additional transceiver needed - the main MCU and LoRa PHY already inside - suitable air quality monitoring, garden, intelligent home, automatization... You may connect load remotely by downlinks - via AO3400A transistor (on board). Optimized for Sensirion SEN54 sensor. MPPT and Li-Ion battery charger for power from 5V++ cheap solar panels. 10+ years of autonomic work with cheap 2W solar panel and standard 1850 Li-Ion battery expected. Sleeping current below 1 mA.

The Silent Wind is a wearable system that visualizes the invisible presence of wind through subtle light and movement, using five microcontrollers and inspired by traditional Japanese aesthetics.

A Raspberry Pi Zero gadget that turns your GitHub commit history into a glowing desk display as well as a self-hosted software hub.

This project aims to develop a real-time monitoring system for important water quality parameters such as temperature, turbidity (TDS & turbidity), and pH. The device utilizes sensors such as DS18B20, SEN0244, SEN0189, and pH 4052c, integrated with a WiFi-based Robotdyn Arduino Uno microcontroller, and displays data in real-time via the IoT platform Thinger.io. This system not only displays data on an LCD screen, but can also be accessed from anywhere via a cloud dashboard, and data can be downloaded at any time. Testing was conducted over 7 days and the results showed a fairly good level of accuracy and precision, as well as compliance with the BBPBAT Buleleng koi pond water quality standards. Perfect for those interested in IoT, aquaculture, agricultural automation, or electrical engineering thesis projects! ???? Jangan lupa like, follow, dan comment..

This project aims to accelerate the process of identifying soil density values from the subgrade, subbase, and base course layers by integrating vibration, speed, and acceleration sensors connected to an Arduino Mega 2560 microcontroller. The data generated enables real-time monitoring and adjustment during the compaction process in accordance with SNI (Indonesian National Standard) 1738-2011.

The system presented in this proposal is referred to as SPL, Static Pressure Launch, a compact and passive ejection mechanism designed to harness environmental pressure differentials for reliable high-altitude capsule release and safe ground handling.

HobbyIoT MQTTView is a practical device capable to display data from an MQTT broker on an LCD display by subscribing to the corresponding topics