Bluetooth Low Energy (BLE) Jobs

Develop embedded software for the Bluetooth and Wi-Fi communication module of an embedded system, sending real-time data between hardware (2 devices) and a iPad tablet. Keep connections stable, recover gracefully from dropouts, and report status events. The API need to be well documented The fully detailed requirements will be given only to the selected freelancer. Overall requirements: The development environment is the Expressive IDE. The microcontroller is an ESP32-C6, Bluetooth 5.3/Wi-Fi 6. Data collected at 1000Hz for real-time analysis Sensors and Health-check data for both BLE & Wifi System Architecture: -Device 1 is master:ESP32-C6 + sensors (from 4 ADC) + mode bouton (for switching from BLE to Wifi and vice versa) -device 2 is slave: ESP32-C6 + sensors (from 4 ADC) -Ipad :...

I have an ESP32 connected to a load cell and HX711 amplifier, and I need the complete firmware-to-mobile workflow that turns it into a working weight-measurement prototype. The microcontroller must read stable, calibrated values from the load cell, push them over Wi-Fi or Bluetooth, and display them inside a companion mobile app on both iOS and Android. On the hardware side, please handle: • HX711 calibration routine with tare and unit conversion • Continuous or on-demand weight sampling (configurable) • JSON payload transmission via MQTT or HTTP (I’m flexible on protocol) • Low-power sleep strategy so the ESP32 can run on battery For the software side, I’d like a clean, cross-platform mobile app (Flutter or React Native are fine) that: • Au...

I’m building a product around an ESP32 and need a clean, reliable firmware layer that handles both Bluetooth Low Energy and Wi-Fi. The two core responsibilities are device connectivity and on-demand data transmission. Here’s what I expect the software to do: • Seamlessly switch between or simultaneously maintain BLE and Wi-Fi links to smartphones and tablets. • Expose a simple, well-documented API so the application layer can request or push data whenever needed rather than streaming constantly. • Keep connections stable, recover gracefully from dropouts, and report status events (connected, disconnected, data sent, error, etc.). • Offer secure pairing/authentication on BLE and WPA2 on Wi-Fi. • Remain lightweight so sleep routines and future ...

We are seeking experienced Hardware Development Engineers to lead the end-to-end development of a consumer-grade embedded IoT system. This is a collaborative project requiring close coordination between hardware and firmware teams to deliver a production-ready industrial IoT device with advanced wireless capabilities and sensor integration. HARDWARE DEVELOPMENT ENGINEER Key Responsibilities: - System-level hardware architecture and design freeze - Component selection (MCU/SoC, power ICs, storage interfaces, wireless modules) - Schematic design and PCB layout (high-speed + mixed-signal, EMI-aware) - Power integrity, grounding, shielding, and DFM/DFA compliance - Prototype fabrication support and manufacturer Q&A - Hardware bring-up support and validation with firmware engineer - Clear ...

I’m building a compact, battery-powered torque meter that streams live readings to a smartphone over Bluetooth Low Energy. The job covers three tightly-linked pieces: electronic hardware, embedded firmware, and a cross-platform mobile application that works on both iOS and Android. Hardware & firmware The unit will sit between the torque sensor and the user’s phone. I need a custom PCB that conditions the sensor signal (likely through a strain-gauge amplifier), handles A/D conversion, and hosts a low-power MCU with BLE 5.x. Firmware should sample torque, apply calibration constants, then broadcast the data at a steady, low-latency rate. Power efficiency and a clean-pairing workflow are essential. Mobile application On the software side, the app should discover the met...

I need a native BLE Peripheral plugin for iOS and Android using Capacitor. Key Requirements: - Must support advertising BLE services and communication with central devices. - Ability to advertise device name and service UUIDs. - Should be optimised for IPhone and Android Ideal Skills and Experience: - Proficiency in iOS and Android native development. - Experience with Bluetooth Low Energy (BLE) and GATT services. - Familiarity with Capacitor and plugin development. - Strong understanding of power management in mobile applications. Looking for a developer who can deliver a reliable and efficient plugin. Please share relevant experience and approach.

I need an iPhone-only application built with CoreBluetooth that acts as a custom HID-like controller over BLE. When the user opens the app it should immediately scan and display any compatible peripherals it discovers, while still offering a manual connect / disconnect button for situations where the automatic scan does not find the intended device straight away. Once connected, the interface has three key interaction modes: 1. A free-form text field where the user can type any string, set an optional delay in milliseconds, and then transmit that text as keystrokes over our custom protocol. 2. A dedicated numeric keypad that pops up a clean, number-only UI. In this mode the user can optionally choose a photo from their library so the keypad sits on top of their chosen background image. 3...

I need a native Swift iOS app integrated with a Bluetooth IoT device. The app should support: - Pairing and connectivity - Data transfer - Remote control Ideal skills and experience: - Proficiency in Swift and iOS development - Experience with Bluetooth Low Energy (BLE) integration - Strong understanding of IoT protocols and data management - Familiarity with Apple’s development tools and guidelines - Ability to implement secure and reliable connectivity Please provide examples of similar work and relevant expertise.

Mobile App for Wearable Safety Device (iOS & Android) I am developing a wearable safety device called NeoLifeGuard for hazardous work environments (construction, industrial sites). I need a mobile app that connects via Bluetooth Low Energy (BLE) to our device. The app’s main purpose is to receive real-time alerts, track user location, and display team status. Core Requirements: 1. BLE Connectivity: * Connect to NeoLifeGuard devices (multiple users). * Receive emergency alerts from devices. * Receive device ID and location data. 2. Real-Time Alert Display: * Show which user activated an alert. * Show current location of the user. * Support group notifications for teams. 3. Simple UI: * Minimalist, easy to read interface. * List of all team members...