Cosmic UI is a free and open-source collection of Sci-Fi themed components and futuristic design elements for modern web applications.
Tyler August writes that The Masked Bear's open-source wifisense-pi project uses an ESP32-S3 sampling the 2.4 GHz WiFi channel 100 times per second with a Raspberry Pi 4 for signal processing to detect subtle body motions via WiFi disturbances, effectively sensing breathing or presence through walls without dedicated hardware.
- Can detect a perfectly still human by breathing, but presence can be hidden by holding breath
- Single sensor provides no position information and cannot reliably distinguish one vs multiple people
- Works by sniffing existing 2.4 GHz signals and functions through walls
- Not the first WiFi-based presence project; prior work includes ESP32 person sensors and millimeter-wave alternatives
- Can detect a perfectly still human by breathing, but presence can be hidden by holding breath
- Single sensor provides no position information and cannot reliably distinguish one vs multiple people
- Works by sniffing existing 2.4 GHz signals and functions through walls
- Not the first WiFi-based presence project; prior work includes ESP32 person sensors and millimeter-wave alternatives
Tanveer Singh:
- microSD desk photo frame
- PC system stats monitor
- Home Assistant dashboard
- Wi-Fi and Bluetooth security tool
- ASCII aquarium
- microSD desk photo frame
- PC system stats monitor
- Home Assistant dashboard
- Wi-Fi and Bluetooth security tool
- ASCII aquarium
The author is undertaking a project to develop "Bridgetris," a game for the vintage 1985 BBC Bridge Companion console originally intended to teach bridge via television. To achieve this, the creator must master Z80 assembly language, reverse-engineer the system BIOS to allow custom code execution from cartridges, and perform hardware modifications like composite video integration.
- The device uses the TMS9129 VDP which features 16kB of VRAM.
- Original retail price was approximately £200 in 1985.
- Hardware was originally designed by a company named Heber Ltd.
- A composite video mod was implemented to improve visual quality on modern displays compared to the original RF output.
- The device uses the TMS9129 VDP which features 16kB of VRAM.
- Original retail price was approximately £200 in 1985.
- Hardware was originally designed by a company named Heber Ltd.
- A composite video mod was implemented to improve visual quality on modern displays compared to the original RF output.
This documentation details the various network endpoints available when CrossInk is operating in File Transfer or Calibre Wireless mode. It covers HTTP requests for file management, device status monitoring, and system settings configuration via specialized APIs. Additionally, it describes WebSocket protocols for fast binary uploads, WebDAV support for external file managers, and UDP discovery services used to locate the device on a network.
- Uses port 80 for HTTP/WebDAV and port 81 for WebSocket uploads
- Supports both Station (STA) and Access Point (AP) network modes
- Employs a custom UDP discovery mechanism via port 8134
- Implements a specific START:<filename>:<size>:<path> protocol for WebSockets
- Uses port 80 for HTTP/WebDAV and port 81 for WebSocket uploads
- Supports both Station (STA) and Access Point (AP) network modes
- Employs a custom UDP discovery mechanism via port 8134
- Implements a specific START:<filename>:<size>:<path> protocol for WebSockets
Ashwini Sinha explains how ESP-Claw turns an ESP32 into a self-programming agent through natural language instructions. By integrating LLMs, the system can automatically generate code and flash firmware to perform tasks such as managing sensor data or controlling peripherals without manual coding. This setup effectively transforms conventional microcontrollers into intelligent embedded systems capable of autonomous updates and performance optimization.
- Minimum hardware requirements include 8 MB PSRAM and 8 MB Flash memory on the ESP chip.
- The agent can access information via web search capabilities to answer specific queries.
- Setup requires a USB-C cable for initial firmware flashing and programming.
- Minimum hardware requirements include 8 MB PSRAM and 8 MB Flash memory on the ESP chip.
- The agent can access information via web search capabilities to answer specific queries.
- Setup requires a USB-C cable for initial firmware flashing and programming.
Debashis Das writes that the ZecTrix Note 4 is an ESP32-S3 based smart note featuring a 4.2-inch e-paper display and integrated voice capabilities for managing reminders, weather, and schedules. The device offers both monochrome and four-color variants (Note 4C) and includes built-in hardware such as a microphone, speaker, NFC, and a rechargeable battery.
- Uses Espressif ESP32-S3 SoC with vector extensions for machine learning workloads.
- Features community firmware options like Slate or TransitInk OS to repurpose the device.
- The Note 4C four-color variant is notably cheaper than the monochrome version on the manufacturer's website.
- Uses Espressif ESP32-S3 SoC with vector extensions for machine learning workloads.
- Features community firmware options like Slate or TransitInk OS to repurpose the device.
- The Note 4C four-color variant is notably cheaper than the monochrome version on the manufacturer's website.
Alex Kretzschmar writes about building a live aircraft radar using an ESP32-C3 and a 1.28-inch round display to track ADS-B traffic by plotting distance and bearing. He improved the original firmware to include flight context such as origin/destination, descriptive aircraft types, local weather data, and adjustable text sizes via a web interface.
- Firmware supports authenticated OTA updates for wireless installation
- The Makerworld 3D models had tolerances too tight for the author's boards
- A web interface allows modifying coordinates and display settings without resetting Wi-Fi configuration
- Firmware supports authenticated OTA updates for wireless installation
- The Makerworld 3D models had tolerances too tight for the author's boards
- A web interface allows modifying coordinates and display settings without resetting Wi-Fi configuration
Ayush Pande writes that the Gemma 4 E2B model offers impressive performance for running local LLMs on Raspberry Pi hardware. While many small models fail at complex reasoning or produce hallucinations, this specific variant achieves a balance of capability and efficiency through its per-layer embedding design. This technique reduces effective computation to approximately 2.3 billion parameters despite having more total parameters, allowing it to run smoothly on modern single-board computers for tasks like summarization and image identification.
- E4B is smarter but runs at ~2.5–3 t/s
- Supports multimodal audio and visual inputs
- Raspberry Pi 5 achieves roughly 6 tokens per second
- E4B is smarter but runs at ~2.5–3 t/s
- Supports multimodal audio and visual inputs
- Raspberry Pi 5 achieves roughly 6 tokens per second
Zoe Skyforest writes about Kek, an emulator developed by vanheusden to bring the influential 16-bit PDP-11/70 minicomputer back to life on modern hardware. The software supports a variety of platforms including Linux, Windows, and microcontrollers like the ESP32 or Teensy 4.1.
- Emulates classic disk drives such as RK05, RL02, RP06, and RP07.
- Supports KW11-L line time clocks and DC-11 serial interfaces.
- Capable of running Unix versions from version 5 through version 7 in multi-user mode.
- Emulates classic disk drives such as RK05, RL02, RP06, and RP07.
- Supports KW11-L line time clocks and DC-11 serial interfaces.
- Capable of running Unix versions from version 5 through version 7 in multi-user mode.
