Bluetooth Low Energy (BLE) Jobs

======================================= OVERVIEW ======================================= We need a complete design package for a standalone, battery-powered audio device. The device plays pre-recorded church bell audio files from a microSD card at three scheduled times per day (6 AM, 12 PM, 6 PM). Purely hardware-controlled — no app, no WiFi, no Bluetooth required for operation. We handle fabrication separately through JLCPCB. Your deliverables are design files only. ======================================= WHAT THE DEVICE DOES ======================================= * Plays a 2-3 minute audio recording at user-selected times (6 AM, 12 PM, and/or 6 PM) * 3 toggle switches to enable/disable each time independently * Rotary switch to select from 8-12 audio files stored on mi...

I need help connecting all my smart devices to a Raspberry Pi using Homebridge, and integrating them with Apple HomeKit. Requirements: - Connect lights, thermostats, security cameras, and any other smart devices. - Ensure compatibility with iOS devices. - Setup should allow control via Apple Home app. Ideal Skills & Experience: - Experience with Raspberry Pi and Homebridge. - Familiarity with Apple HomeKit and iOS integration. - Knowledge of various smart home devices and their configurations.

I need a clean, reusable .NET MAUI framework that runs on both Android and iOS. The core of the job is a Bluetooth Low Energy driver focused on monitoring-and-notification use cases, wrapped in a virtual communication layer that speaks a fully custom protocol next to standard BLE read/write/notifications characteristics Here is what I expect: - Knowledge AND EXPERIENCE how to run/build BLE MAUI applications, please add this in your response, might need communication • A solution skeleton in MAUI with well-structured projects for shared code, platform specifics, and tests. • A BLE service that discovers, connects, subscribes, and streams characteristic changes, exposing them through events/observables suitable for reactive UI updates. • The virtual channel: encode/dec...

I’m building a brand-new tracker aimed at hunters and other outdoor enthusiasts who need to see the location of their harvested game is in real time. The core requirement is straightforward: reliable location tracking that appears instantly on a smartphone and must be as small and light as possible. The idea is that a bow hunter can easily track and find their game after a shot is taken. This would ideally be the most ethical form of locating an animal to ensure that it is not gone to waste. Here’s the functionality I have in mind: • The device gathers GPS coordinates, pushes them to the user’s phone over low-energy Bluetooth, and refreshes quickly enough to feel truly live. • When Bluetooth isn’t possible or range is lost, a secondary short-range...

Project: ESP32-Based Talking Plush Toy – Prototype Development Project Overview I’m building a screen-free talking plush toy for kids (3–7 years). The goal is to create a working prototype (V1) that demonstrates: Calm audio interaction Simple button & Bluetooth (BLE) control Safe, battery-powered operation This is prototype-only, not mass production. Scope of Work The freelancer will: Build a working ESP32-based prototype Implement audio playback (pre-recorded voice files) Support button-based triggers Implement BLE connectivity (basic commands from phone) Ensure safe power & insulation for a prototype Share code + wiring diagram + build instructions Core Features (V1) ESP32 dev board Pre-recorded audio playback (stories, phrases) 1–2 physical buttons BLE co...

I want to ship a lean Android + iOS application that can 1) establish a Bluetooth Low Energy link to my peripheral and move data back and forth, and 2) instantly push out a user-defined BLE packet the moment the phone detects an incoming call. The BLE work is classic data-transfer: discover the device, pair, subscribe to characteristics, then read/write packets on demand. Stability in the background is critical; the link must stay alive (or reconnect quickly) when the screen is off. When a call arrives the app should listen to the system broadcast (Android) or CallKit/VoIP push workaround (iOS), pull the string the user previously defined, and write it over the existing BLE connection without visible delay. Please send a concise, detailed project proposal outlining: • your ...

I’m building a small bionic butterfly that “flips” in mid-air, powered by an ESP32-S3 Super Mini. What I still need is the full control system: firmware for the board plus a cross-platform mobile app that drives two micro-servos through a joystick interface. Here’s the flow I’m picturing: • The ESP32-S3 runs custom firmware (Arduino IDE or ESP-IDF—whichever you prefer) advertising itself over BLE. • The mobile app—working on both Android and iOS—connects, shows a virtual joystick, and streams position data in real time. • The board translates that data into precise PWM signals so each servo can beat the wings smoothly and synchronously. I will supply the hardware (ESP32-S3 Super Mini and servos) for your testing if nee...

Busco a una persona con sólida experiencia en IoT y algoritmos de inteligencia artificial para crear un sistema domótico completo. El proyecto incluye: • Diseño y prototipado del hardware: placa electrónica, selección de sensores / actuadores y conectividad (Wi-Fi o Bluetooth) listos para producción a pequeña escala. • Firmware modular que permita futuras actualizaciones OTA. • Aplicación móvil (iOS y Android) para la configuración y el control remoto del dispositivo. • Integración fluida con asistentes de voz —el sistema debe poder recibir y ejecutar comandos vía Alexa, Google Assistant u otro asistente equivalente. • Documentación técnica (esquem&aacut...