This project transforms the LILYGO T-Display-P4 development board into a multifunctional portable device capable of acting as a 1090 MHz ADS-B receiver and a Meshtastic-compatible mesh radio. By using an RTL-SDR USB dongle for RF reception and an onboard SX1262 LoRa radio, the system provides real-time aircraft tracking via a touchscreen interface and off-grid messaging capabilities. The device also features integrated MP3 playback, GPS time synchronization, and a companion web application called ADS-B Scope for live map viewing through WebSerial.
Main features include:
* Real-time ADS-B decoding and radar scope visualization with aircraft database enrichment.
* Meshtastic-compatible LoRa mesh networking with encrypted messaging and node discovery.
* Integrated MP3 music player with ID3 tag parsing and cover art display.
* Adaptive RTL-SDR gain control and USB hot-plug support.
* Comprehensive SD card logging for both ADS-B flight data and mesh messages.
* Dual-core ESP32-P4 architecture optimized via a 6-tier FreeRTOS priority scheme.
* WebSerial-based companion app for live mapping, firmware flashing, and file management.
Main features include:
* Real-time ADS-B decoding and radar scope visualization with aircraft database enrichment.
* Meshtastic-compatible LoRa mesh networking with encrypted messaging and node discovery.
* Integrated MP3 music player with ID3 tag parsing and cover art display.
* Adaptive RTL-SDR gain control and USB hot-plug support.
* Comprehensive SD card logging for both ADS-B flight data and mesh messages.
* Dual-core ESP32-P4 architecture optimized via a 6-tier FreeRTOS priority scheme.
* WebSerial-based companion app for live mapping, firmware flashing, and file management.
A clean-room, header-only C/C++ implementation of the Meshtastic LoRa mesh protocol designed for embedded systems. This standalone library allows devices to interoperate with the Meshtastic network without requiring heavy dependencies like Arduino, RadioLib, or FreeRTOS. It handles everything from raw LoRa byte processing to decoded messages including text, position, and telemetry data.
Key features include:
- Packet parsing and AES-256-CTR encryption/decryption
- PKI direct messages using x25519 key exchange
- Channel management and PSK expansion
- Protobuf decoding for various message types without Nanopb dependency
- Radio configuration including regional settings and modem presets
- CSMA/CA implementation for MAC protocol compliance
Key features include:
- Packet parsing and AES-256-CTR encryption/decryption
- PKI direct messages using x25519 key exchange
- Channel management and PSK expansion
- Protobuf decoding for various message types without Nanopb dependency
- Radio configuration including regional settings and modem presets
- CSMA/CA implementation for MAC protocol compliance
An introduction to ADS-B Scope, an open source firmware project that transforms the LilyGo T-Display-P4 into a standalone, portable aircraft tracking device. By connecting an RTL-SDR dongle, users can view real-time flight data including callsigns, altitude, speed, and position on a 4 inch AMOLED touchscreen without needing a computer or internet connection.
Key features include:
- Real-time aircraft tracking with visual data on an integrated screen.
- A webapp for viewing live maps with aircraft trails and log replays via USB-C.
- Meshtastic-compatible mesh messaging protocol using the built-in LoRa radio.
- SD card logging with GPS timestamps and USB mass storage support.
Key features include:
- Real-time aircraft tracking with visual data on an integrated screen.
- A webapp for viewing live maps with aircraft trails and log replays via USB-C.
- Meshtastic-compatible mesh messaging protocol using the built-in LoRa radio.
- SD card logging with GPS timestamps and USB mass storage support.
IBM has introduced Granite 4.0 3B Vision, a specialized vision-language model (VLM) engineered for high-fidelity enterprise document data extraction. Unlike monolithic multimodal models, this release uses a modular LoRA adapter architecture, adding approximately 0.5B parameters to the Granite 4.0 Micro base model. This design allows for efficient dual-mode deployment, activating vision capabilities only when multimodal processing is required. The model excels at converting complex visual elements, such as charts and tables, into structured machine-readable formats like JSON, HTML, and CSV. By utilizing a high-resolution tiling mechanism and a DeepStack architecture for improved spatial alignment, Granite 4.0 3B Vision achieves impressive accuracy in tasks like Key-Value Pair extraction and chart reasoning, ranking highly on industry benchmarks.
This guide helps engineers build and ship LLM products by covering the full technical stack. It moves from core mechanics (tokenization, embeddings, attention) to training methodologies (pretraining, SFT, RLHF/DPO) and deployment optimizations (LoRA, quantization, vLLM). The focus is on managing critical production tradeoffs between accuracy, latency, memory, and cost
A gateway that bridges Meshtastic mesh radios and Iridium SBD satellite modems. Send messages between off-grid mesh networks and global satellite coverage from a single box.
This research introduces Doc-to-LoRA (D2L), a method for efficiently processing long documents with Large Language Models (LLMs). D2L creates small, adaptable "LoRA" modules that distill key information from a document, allowing the LLM to answer questions without needing the entire document in memory. This significantly reduces latency and memory usage, enabling LLMs to handle contexts much longer than their original capacity and facilitating faster knowledge updates.
Stridetastic is an open-source monitoring and observability framework for Meshtastic® LoRa mesh networks. It helps operators capture, inject, and visualize mesh network data.
Information about Meshtastic, an open-source, decentralized, off-grid mesh network, and the MDARC's involvement with it, including node locations and configurations.
A terminal interface for chatting via Meshtastic mesh networks with real-time message display, node discovery, and radio configuration.
