HackPlate is an open-source preheating station created for makers, repair technicians, and hardware enthusiasts who want full control over their tools. Built around a Raspberry Pi Pico (RP2040) and a Solid-State Relay (SSR 40A), it manages temperature control for PTC plates or heating elements with precision and reliability. HackPlate was designed as a transparent, modifiable, and educational tool — promoting the maker and hacker culture by encouraging learning, experimentation, and community-driven improvement. Anyone can modify the design, optimize performance, or contribute to its firmware and documentation.

With a current consumption of only a few microamperes, this thermometer can operate for years on a single CR2032 battery—or indefinitely with a solar cell.

An industrial-grade Star-Delta electrical control panel designed for motor starting applications, featuring overload protection, timer control, and safety interlocks

This build integrates an RTL-SDR v3 (RTL2832U+R820T2) covering 500 kHz - 1.766 GHz, paired with a 100 kHz - 2 GHz, 30 dB LNA powered by an internal 5 V → 1.2 - 24 V DC converter. A second RTL-SDR DAB/DVB receiver (RTL2832U+FC0012) covering 45 - 930 MHz, feeds into the USB 3.0 hub that forms the system’s primary data bus. A M8N-type GPS USB module supplies GNSS reception on L1 band (1.559 - 1.610 GHz) along with a PPS output for precision timing. The build also incorporates an EvilCrow RF v2, using a Wi-Fi enabled ESP32-PICO-D4. The microcontroller drives two CC1101 transceivers on 300 - 348 MHz, 387 - 464 MHz, and 779 - 928 MHz, as well as a NRF24L01+PA+LNA (GT24) module for 2.400 - 2.525 GHz operation. External antennas are connected through BNC, SMA, and RP-SMA ports grouped on one side of the device. The ruggedized design and weather-sealed connectors ensure reliable radio reconnaissance in the field.

This programmer is intended for the family of PIC 8-40 pin microcontrollers, using an universal socket.

Aujourd’hui, l’automatisation rend notre quotidien plus sûr et plus simple, en réduisant les risques et en allégeant les tâches répétitives. Je vous présente mon projet : un distributeur de gobelets automatique. Contrairement aux solutions classiques à plusieurs étages d’engrenages, j’ai opté pour un système poulie-courroie : plus simple, plus fiable et facile à maintenir. Cette conception permet de délivrer des gobelets rapidement, en toute sécurité, tout en restant accessible pour une fabrication pratique.

ZoeTheRobot runs a home made custom chat bot that allows her to answer questions and follow spoken commands.

Expansion board for ESP32 boards.

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.

This project demonstrates how to convert a standard bicycle into a high-performance electric bike (e-bike) capable of reaching speeds up to 50 km/h. It involves integrating an electric motor, battery system, throttle controller, and other essential electronics. The project blends mechanical engineering, electrical systems, and DIY fabrication skills to build a cost-effective and powerful personal transportation solution.

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..

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

The ultimate beginner’s board to learn, build, and master Arduino the easy way.

Simple way to turn this module into a really functional and cheap PEMF device that is usually sold at a very high price.

Imagine a laboratory where valuable equipment is at risk because traditional locks offer no traceability. Anyone can enter, and if something goes missing, there’s no way to know who was last inside. We designed a smart solution: an IoT-based door security system using NodeMCU ESP8266 and RFID technology that reads electronic ID cards (e-KTP) as access keys. When a user taps their e-KTP & KTM (Student Card) on the RFID reader, the system verifies the unique ID, unlocks the door automatically, and logs the access in real-time to both a local database (XAMPP) and Google Spreadsheet. This system enhances security, enables instant user tracking, and leverages a national ID that everyone already owns—making it cost-effective and easy to implement. It’s not just a smart lock; it’s a secure, traceable, and scalable access control system for laboratories, offices, or dormitories. With this innovation, we move from blind access to intelligent, data-driven security.

Patreon: Beginner