📷 Advanced Etch-A-Sketch Camera

This project transforms a simple Etch-A-Sketch into a sophisticated drawing machine, showcasing innovative engineering and advanced algorithms to create high-quality images.

Specifications:
➡️Features power management, motor controls, wireless communication.
➡️Captures images and transmits them over Wi-Fi for AI processing.
➡️Accurately manages motor movements with a feedback loop.

Features:
➡️Converts images into optimized G-Code using AI.
➡️Predicts necessary motor adjustments for improved accuracy.
➡️Algorithm optimizes drawing paths for efficiency.
➡️Simplifies images to make them suitable for drawing.

This project is a fascinating blend of art and technology, perfect for robotics enthusiasts, engineers, and anyone interested in the creative application of advanced algorithms.

More information:
🔗 The hardware files
😹 The GitHub repository
📺 The YouTube video

#projects #esp32 #artificial_intelligence

🎹 Open-Source Haptic SmartKnob

This is a very interesting input device with software-configurable endstops, virtual detents, haptic touch feedback, and a round LCD.

A brushless gimbal motor is paired with a magnetic encoder to provide closed-loop torque feedback control, enabling virtual endstops and detents. Internally, everything is powered by an ESP32, with a TMC6300 BLDC motor driver, HX711 strain gauge ADC, VEML7700 ambient light sensor, and more!

Key features of the project:
➡️240x240 round LCD
➡️Low-cost BLDC gimbal motor
➡️Powered by ESP32-PICO-V3-02
➡️PCB flexure and strain gauges (press detection)
➡️8 side-firing RGB LEDs illuminate ring

This project offers an innovative solution for modern human-device interfaces and is made only off-the-shelf components. The source files are represented in both hardware and software domain.

More information:
😹 The GitHub repository
📺 The YouTube video

#projects #esp32

⌚️ Open-Source ESP32-Based Smartwatch with LiDAR and Wi-Fi Scanning

This project is prominent for utilizing the 🇨🇳 ESP32 microcontroller to combine advanced functionality with environmental monitoring and IoT control. It also stands out with its capability to interact with various smart devices, offering a unique blend of practicality and technological innovation for enthusiasts.

Features of the smartwatch:
➡️Provides high precision timekeeping.
➡️Activates the watch based on motion.
➡️Tracks atmospheric conditions such as humidity, pressure, and temperature.
➡️Includes a VL53L1X distance sensor and a 5mW laser for precise measurements and presentations.
➡️Provides details on network signal strength and encryption levels.
➡️Control of IoT devices like door locks and light switchers.
➡️Recharges fully in 43 minutes via USB-C or magnetic charger.

The comprehensive features of this smartwatch and its quick charging capability make it a practical and exciting tool for innovative applications and daily use.

More information:
🔗 The main article
🔗 The official website
📺 The YouTube video

#projects #esp32 #IoT

⌨️ Modding the TI-84 Plus for Internet Access and AI Integration

This project focuses on modifying the 💦 TI-84 calculator to provide internet access and integrate advanced features like AI-powered assistance. The mod transforms the calculator into a powerful tool for both educational and experimental purposes.

Features of the project:
➡️Connects the calculator to the internet using the ESP32 microcontroller.
➡️Allows users to access AI-powered assistance for solving math problems and answering questions during tests.
➡️Integrates camera functionality for additional input and features.
➡️A custom-designed PCB and software manage all connections and communication between the calculator and the internet.
➡️The modification is hidden inside the calculator, making it hard to detect.

The integration of AI tools like ChatGPT making this project particularly appealing for those looking to explore the intersection of hardware modding and artificial intelligence.

More information:
😹 The GitHub repository
📺 The YouTube video

#projects #artificial_intelligence #esp32

🤖 Q8bot – Tiny Open-Source Robot with Big Potential

The Q8bot is a compact quadruped robot designed to minimize wiring complexity by integrating all components directly onto a custom PCB. The robot uses eight Dynamixel motors and a Seeed Studio XIAO ESP32C3 microcontroller to achieve agile, wire-free movement.

Features of the robot:
➡️The robot's core structure integrates motor connections and power components directly onto a central PCB.
➡️Powered by eight powerful XL330-M077-T servos.
➡️The 3D-printed frames house 14500 batteries directly, providing a clean, compact design.
➡️Controlled remotely via an onboard ESP32 controller using the ESP-Now protocol.

The robot's open-source design and relatively low bill of materials (around $300) make it accessible for hobbyists looking to experiment with quadruped robot movement and control.

More information:
☠️ The Hackaday article
😹 The GitHub page

#projects #robots #esp32

🗺 Laser Vector Scope: A Retro-Inspired Tech Adventure

This project recreates the charm of vintage CRT TVs by designing a mini vector scope that uses a laser to project vector graphics onto a UV-sensitive screen. With 3D-printed components, stepper motors, and an ♾ Arduino-running microcontroller, it offers an accessible yet technical foray into retro-inspired electronics.

Key features of the project:
➡️Utilizes a violet laser to draw on a UV-reactive screen, mimicking CRT phosphorescence.
➡️Stepper motor-driven mirrors deflect the laser beam in X and Y axes for precision control.
➡️Includes a retro-styled case and functional components like mounts and connectors.
➡️Supports analog signal inputs for basic oscilloscope functions and vector graphics rendering.
➡️Features rotary encoders, MOSFET-triggered laser modulation, and external BNC connectors.

The author of the project thoroughly described the building project in his 📺 YouTube video. The project would be especially beneficial for those interested in blending electronics, programming, and 3D printing with a touch of retro flair.

⛓ More information...

#projects #esp32 #arduino

⌚️ T1D Smartwatch: Open-Source Device For Continuous Glucose Monitoring

Building a smartwatch for Type 1 Diabetes (T1D) management from scratch involves integrating complex electronics and software to meet specific needs, such as real-time Continuous Glucose Monitoring (CGM) and haptic feedback alerts. This project aims for simplicity in design without compromising functionality, tailored to withstand outdoor activities and deliver critical health data discreetly.

Features of the device:
➡️Designed for minimal distraction during school and sports activities.
➡️Water-resistant to withstand rain and splashes.
➡️Provides reliable CGM data and timely haptic alerts for urgent health notifications.
➡️Features customizable watch faces to gamify glucose monitoring.
➡️Utilizes Bluetooth Low Energy (BLE) for data synchronization with an iOS companion app.

This project demonstrates the feasibility of integrating advanced health monitoring features into a wearable form factor accessible through open-source development practices.

⛓ More information...

#projects #esp32

🎙 Using ESP32 Antenna Array to See Wi-Fi Signals

This project uses an 🇨🇳 ESP32 antenna array to visualize Wi-Fi signals in real time. It overlays detected signals onto a camera feed, turning invisible radio waves into a visible representation. By analyzing reflections and signal strength, it reveals how RF signals propagate through different environments.

Features of the project:
➡️Displays real-time Wi-Fi signals as glowing patterns.
➡️Identifies direct and reflected signal paths.
➡️Uses focused beams for precise signal capture.
➡️Detects device positions using triangulation.
➡️Neural networks reconstruct environments from signal reflections.

Visualizing RF signals like Wi-Fi helps in understanding wireless propagation, detecting interference, and optimizing network coverage. It can be useful for diagnosing connectivity issues, improving antenna placement, and studying signal behavior in different environments. This project is valuable for researchers, engineers, and hobbyists looking to explore the hidden world of radio waves.

⛓ More information...

#projects #esp32