Adam Conway writes about constructing a custom aircraft radar using an ESP32-S3 powered WT32-SC01 Plus display. The device fetches live flight data from ADS-B networks to show real-time positions, altitudes, and routes on a 3.5-inch touchscreen interface. To maintain smooth visuals despite five-second data updates, the system uses dead reckoning to predict aircraft movement between polls.
- Employs an 8-bit parallel bus for high bandwidth display rendering
- Uses Douglas-Peucker simplification to compress coastline data into limited flash memory
- Incorporates emergency squawk code detection with visual warnings
- Manages real-time flight information via the adsb.fi and adsbdb APIs
- Employs an 8-bit parallel bus for high bandwidth display rendering
- Uses Douglas-Peucker simplification to compress coastline data into limited flash memory
- Incorporates emergency squawk code detection with visual warnings
- Manages real-time flight information via the adsb.fi and adsbdb APIs
Michael Kozlowski writes that Seeed Studio's reTerminal Sticky is an e-paper device arriving September 15th to serve as a shared household reminder hub. It features an E-Ink touchscreen for displaying notes, weather updates, and messages on magnetic surfaces like refrigerators or walls.
- Features voice transcription via physical buttons and remote control through the Seeedash app.
- Supports Home Assistant integration using ESPHome or custom OpenDisplay firmware.
- Includes a 750 mAh battery that lasts up to months in Battery Saver Mode.
- Features voice transcription via physical buttons and remote control through the Seeedash app.
- Supports Home Assistant integration using ESPHome or custom OpenDisplay firmware.
- Includes a 750 mAh battery that lasts up to months in Battery Saver Mode.
Jean-Luc Aufranc writes that Seeed Studio’s reTerminal Sticky is a 3.97-inch magnetic touch ePaper display powered by an ESP32-S3 microcontroller. This device can serve as an e-reader, live dashboard, or home automation controller via support for open-source firmware like Crosspoint, TRMNL, and ESPHome. It features a capacitive touchscreen and edge computing capabilities through its built-in microphone.
- 800 x 480 resolution with four levels of grayscale
- Includes temperature/humidity sensors and a 3-axis accelerometer
- Equipped with a 750 mAh battery providing approximately seven days of standby time
- Retails for $49.90
- 800 x 480 resolution with four levels of grayscale
- Includes temperature/humidity sensors and a 3-axis accelerometer
- Equipped with a 750 mAh battery providing approximately seven days of standby time
- Retails for $49.90
@0xabad1dea@infosec.exchange writes about an incident where AI-assisted mathematical proofs appear to exploit bugs in theorem provers, specifically highlighting a case involving the Collatz conjecture and Lean 4. The discussion explores whether large language models are inadvertently discovering software vulnerabilities through pattern matching or learning from existing technical discussions about those bugs, while broader debates address the inherent limitations of formal verification when facing hardware faults, modeling errors, and human mistakes in specifications.
This project is an emulation of the original Tamagotchi P1 designed to run on Arduino UNO hardware. It uses TamaLib as its core engine, with heavy optimizations applied so it can function within 32K Flash and 2K RAM limitations.
- Emulation based on TamaLib optimized for low memory
- Uses SSD1306 I2C OLED displays via the U8g2 library
- Requires specific hardware including push buttons, resistors, and a buzzer
- Includes instructions to convert Tamagotchi ROM files into C headers using Java
- Emulation based on TamaLib optimized for low memory
- Uses SSD1306 I2C OLED displays via the U8g2 library
- Requires specific hardware including push buttons, resistors, and a buzzer
- Includes instructions to convert Tamagotchi ROM files into C headers using Java
A software project that recreates the aesthetic of a 1980s cable community bulletin board for any display, with an emphasis on vintage CRT televisions. It provides a rotating broadcast including time and date, custom messages, fun facts, dad jokes, weather updates via Open-Meteo, and scrolling RSS news headlines in a retro ticker crawl.
Key features include:
A web-based control room for real-time customization of identity, timing, feeds, colors, and message rotation without needing to reload the screen.
Hardware optimization for Raspberry Pi users looking to feed video through HDMI-to-coax modulators or composite AV outputs into old TVs.
Integration with CheerLights to incorporate global color changes directly into the headline crawl.
Support for background music via local audio files and customizable overscan margins for vintage display compatibility.
Key features include:
A web-based control room for real-time customization of identity, timing, feeds, colors, and message rotation without needing to reload the screen.
Hardware optimization for Raspberry Pi users looking to feed video through HDMI-to-coax modulators or composite AV outputs into old TVs.
Integration with CheerLights to incorporate global color changes directly into the headline crawl.
Support for background music via local audio files and customizable overscan margins for vintage display compatibility.
Timothy Giles has developed a 3D-printed optical cavity designed to detect minute shifts in space and wavelength. By arranging two semi-transparent mirrors—one on a printed mount and the other attached to a speaker diaphragm—the setup uses light interference to measure displacement at a nanometer scale. A webcam monitors an emitted beam pattern for alignment, while the speaker acts as a linear actuator to vary cavity length. This experiment also demonstrates how thermal shifts in a laser diode can cause wavelength instability through changing interference patterns.
- 3D printing construction of optical cavities
- Measuring displacement via light interference
- Utilizing a speaker diaphragm as an actuator
- Observing temperature-induced laser wavelength fluctuations
- 3D printing construction of optical cavities
- Measuring displacement via light interference
- Utilizing a speaker diaphragm as an actuator
- Observing temperature-induced laser wavelength fluctuations
This project implements a retro-style ADS-B radar display designed specifically for the ESP32 using a Cheap Yellow Display (CYD) ILI9341. It fetches aircraft data from local dump1090 instances and visualizes real-time information, including position, altitude, speed, and callsigns, on an interactive radar scope or within a tabular list.
Key features:
* Radar scope visualization featuring range rings, crosshairs, and blips for approaching aircraft.
* A detailed aircraft data table providing quick access to nearby flight info.
* Touchscreen support allowing users to cycle through large radar, split-screen, and full-table layout modes.
* Automatic identification of military aircraft via red color highlighting.
* Highly optimized for MicroPython on ESP32 hardware using specific CYD libraries.
Key features:
* Radar scope visualization featuring range rings, crosshairs, and blips for approaching aircraft.
* A detailed aircraft data table providing quick access to nearby flight info.
* Touchscreen support allowing users to cycle through large radar, split-screen, and full-table layout modes.
* Automatic identification of military aircraft via red color highlighting.
* Highly optimized for MicroPython on ESP32 hardware using specific CYD libraries.
This open-source firmware is designed for the ESP32-C3 Super Mini and a 1.28 inch GC9A01 round display to create a sonar-style aircraft radar. It visualizes live ADS-B data on a circular grid, showing flight paths, detailed aircraft models, altitude, and speed.
- Real-time tracking using adsb.fi for aircraft positions
- Route enrichment through ADSBDB for origin/destination info
- Integrated weather display via Open-Meteo and local time via NTP
- Web-based Wi-Fi setup portal for location and setting configuration
- Support for authenticated OTA firmware updates
- Real-time tracking using adsb.fi for aircraft positions
- Route enrichment through ADSBDB for origin/destination info
- Integrated weather display via Open-Meteo and local time via NTP
- Web-based Wi-Fi setup portal for location and setting configuration
- Support for authenticated OTA firmware updates
A bidirectional bridge connecting Bitchat and Meshtastic networks allows local Bluetooth chat clients to communicate over long distances using LoRa radios. The system runs on a Linux-based device that relays messages between mobile devices via Bluetooth and the mesh network through a USB connection.
- Relays text from nearby Bitchat apps to the Meshtastic LoRa network.
- Broadcasts incoming LoRa signals back to all connected Bluetooth clients.
- Designed for Linux environments like Raspberry Pi using Python 3.7 or higher.
- Relays text from nearby Bitchat apps to the Meshtastic LoRa network.
- Broadcasts incoming LoRa signals back to all connected Bluetooth clients.
- Designed for Linux environments like Raspberry Pi using Python 3.7 or higher.
