NimBLE Projects

A library for ESP32 that enables firmware and filesystem (SPIFFS/LittleFS) updates over Bluetooth Low Energy. It supports both BlueDroid and NimBLE stacks, offering features like data compression, secure RSA-based signature verification, and customizable callbacks for update monitoring.

A synchronization tool written in CPython and MicroPython for fetching FIT activity files from XOSS and Cycplus cyclo-computers via Bluetooth Low Energy (BLE). It implements the YMODEM protocol over the Nordic UART Service to provide an open-source alternative to proprietary mobile applications.

A full-stack open-source solution for smart aquarium LED control featuring ESP32-based hardware, ESP-IDF firmware, and a Flutter mobile application. It provides high-resolution PWM dimming, sunrise/sunset simulation, and efficient CoAP/CBOR communication for professional-grade lighting management.

VaktBLE is a security framework that acts as a benevolent Man-in-the-Middle bridge to protect BLE peripherals from malicious central devices. It utilizes non-compliant BLE firmware on nRF52840 hardware to validate link-layer packets in real-time, shielding targets like ESP32 from protocol-level attacks without requiring modifications to the target's firmware.

An ESP32-based firmware that extracts vehicle data via an ELM327 OBD2 adapter and transmits it to an MQTT broker over cellular networks. Designed for Home Assistant integration, it supports a wide range of LilyGO T-Call and Waveshare modules with integrated GSM/LTE and GPS capabilities.

A specialized security auditing and wireless monitoring firmware for ESP32 devices. Built on the ESP-IDF framework and FreeRTOS, it provides tools for BLE wardriving, WiFi deauthentication testing, and device detection for hardware like AirTags and Flipper Zero.

An ESPHome component designed to interface with Cosori smart kettles using Bluetooth Low Energy on ESP32 microcontrollers. It provides comprehensive control over heating states and temperature setpoints while exposing sensors for real-time water temperature and base status to Home Assistant.

An ESP32-S3 firmware for monitoring Victron SmartSolar chargers and battery monitors via Bluetooth. It decrypts BLE advertisements using AES-128 and displays real-time metrics on a 3.5-inch LCD using the LVGL library.

A comprehensive treadmill computer replacement based on the ESP32-S3 and ESPHome firmware. It implements the Fitness Machine Service (FTMS) protocol to enable direct Bluetooth connectivity with fitness apps like Zwift and Kinomap while controlling treadmill hardware via UART.

A multi-platform LoRa Terminal Node Controller (TNC) firmware supporting ESP32, nRF52, RP2040, and STM32. It provides a serial CLI for raw LoRa interaction, BLE packet sniffing, and a KISS-TNC mode for APRS, AX.25, and IP-over-LoRa networking.

A modular AIoT firmware for the Pixlpal desktop companion based on the ESP32-S3 SoC. It utilizes the ESP-IDF framework and FreeRTOS to power an interactive 128x64 RGB LED matrix display with features like Wi-Fi connectivity, BLE control, and audio processing.

A board support package and configuration repository for Nicenano and NRF52840 Supermini development kits in PlatformIO. It provides variant definitions, pin mappings, and setup instructions for the Adafruit nRF52 Arduino framework and Zephyr RTOS.

A modular firmware platform for the ESP32-S3 SoC built using the ESP-IDF framework. It features a structured architecture divided into hardware drivers, services, core logic, and applications, utilizing the NimBLE Bluetooth stack for wireless connectivity.

An advanced animated character display system based on the ESP32-P4 platform using the DSI interface to drive a 10.1-inch LCD. It features a 12x5 grid for characters and emoji with a unique 'card falling' animation effect. The system utilizes LVGL for UI rendering and NimBLE for BLE communication via an external ESP32-C6 co-processor.

Rust-based firmware for the EchoKit ESP32-S3 voice interaction device. It utilizes the ESP-IDF framework to provide voice processing, display management, and network connectivity for AI-driven hardware applications.

A comprehensive security-focused firmware for ESP32, ESP8266, and RTL8720DN platforms designed for wireless auditing and hardware hacking. It provides a robust toolkit for Sub-GHz, Wi-Fi, BLE, RFID/NFC, and Infrared signal manipulation across various devices like M5StickC and Cardputer.

A comprehensive solution for connecting Seeed Studio XIAO development boards to Home Assistant using WiFi or Bluetooth Low Energy. It supports real-time bidirectional communication via WebSockets on ESP32 devices and ultra-low power sensor reporting via the BTHome v2 protocol on both ESP32 and nRF52840 platforms.

This project transforms standard USB keyboards into wireless Bluetooth Low Energy (BLE) devices using the ESP32-S3's native USB-OTG hardware. It features multi-device switching for up to three paired hosts and utilizes the NimBLE stack for low-latency HID report forwarding.

An IoT sensor network application for STM32 Blue Pill using Apache Mynewt RTOS. It supports multiple operational modes including standalone WiFi nodes, low-power nRF24L01 sensor nodes, and collector gateways. The project features internal temperature monitoring, WiFi geolocation, and integration with thethings.io via CoAP and CBOR.

A collection of firmware applications and modules for the PineTime smartwatch based on the RIOT operating system. It features a graphical user interface powered by LVGL and Bluetooth 5.0 connectivity using the NimBLE stack.

A comprehensive BLE 5.0 development platform for Nordic nRF52 series microcontrollers, integrating the RT-Thread RTOS with the Apache NimBLE protocol stack. It provides a fully open-source alternative to proprietary BLE stacks, utilizing Nordic SDK 15.0 drivers and supporting the Keil MDK development environment.

An integrated application project for Nordic nRF52840 and nRF52832 platforms featuring the RT-Thread RTOS, NimBLE BLE 5.0 stack, and LittlevGL (LVGL) graphics library. It demonstrates a complete embedded system solution including heart rate monitoring (HRM) and graphical user interface components.

An open-source smartwatch project built on the Zephyr RTOS and powered by the nRF5340 dual-core BLE SoC. It features a high-resolution round touch display, a comprehensive suite of Bosch environmental and motion sensors, and seamless smartphone integration via Gadgetbridge or iOS.

A lightweight Bluetooth Low Energy (BLE) library for Arduino based on the NimBLE stack. It provides a resource-efficient alternative to the standard Bluedroid-based BLE library for ESP32 and Nordic nRF5 series microcontrollers, significantly reducing flash and RAM usage.

A Bluetooth Low Energy (BLE) HID keyboard and mouse implementation for the ESP32 using the Apache Mynewt NimBLE stack. It demonstrates GATT server creation, HID report mapping, and GPIO button integration for sending keyboard scan codes and mouse movements.

A port of the Apache NimBLE Bluetooth 5.0 stack for the RT-Thread RTOS. It provides full Host and Controller layer support for Nordic nRF51 and nRF52 series microcontrollers, as well as a Host-only mode for external controllers via HCI UART.

An Arduino Core for ARM-based BLE microcontrollers, specifically targeting the Nordic nRF51 and nRF52 series. It features a complete open-source BLE stack via NimBLE, integrated FreeRTOS with tickless idle for low-power operation, and support for custom compile-time configurations.

Nesper provides Nim language wrappers for the ESP-IDF SDK, enabling developers to program ESP32 microcontrollers using Nim. It leverages Nim's ARC garbage collector and provides high-level interfaces for FreeRTOS, LwIP, and various ESP32 hardware peripherals.

An open-source firmware for the PineTime smartwatch based on the nRF52832 microcontroller. It utilizes FreeRTOS for task management, LVGL for the user interface, and NimBLE for Bluetooth Low Energy connectivity. The project provides a complete suite of applications, watch faces, and OTA update capabilities for the PineTime hardware.

A comprehensive collection of code examples for fitting hierarchical Bayesian models to small area health data. The repository covers multiple statistical frameworks including Win/OpenBUGS, Nimble, CARBayes, and INLA for spatial and spatio-temporal applications.

Deck is a high-performance ESP32-based dashboard project that ports the fluid X-TRACK UI framework to the Arduino platform using LVGL. It features 60 FPS animations on a 1.3-inch IPS display and uses a three-button interface to simulate rotary encoder navigation.

A comprehensive collection of Bluetooth Low Energy (BLE) application examples for Raspberry Pi, ESP32, and nRF52. It demonstrates BLE functionality including advertisements, connections, security, and power optimization using Python (Bleak), Arduino (NimBLE), and the Zephyr RTOS.

A high-precision smart coffee scale project featuring ESP32 firmware written in Rust and a Svelte-based Progressive Web App. It utilizes an HX711 load cell with Kalman filtering for real-time weight tracking and communicates via Bluetooth Low Energy to provide live extraction curves and timer functionality.

A project enabling Over-the-Air (OTA) firmware updates for ESP32 microcontrollers using Bluetooth Low Energy (BLE). It supports both the standard ESP32 BLE library and the more memory-efficient NimBLE-Arduino, providing Python scripts and an Android app for the update process.

A library and example collection for configuring an ESP32 as a BLE HID client (central) using the NimBLE-Arduino stack. It allows ESP32 devices to connect to and process data from BLE peripherals such as mice, joysticks, and gamepads.

A lightweight, framework-agnostic event emitter library for the Nim programming language. It provides a simple API for subscribing to and emitting events, facilitating decoupled communication within applications.