Bluetooth projects — HireLancer archive

ID / Date Listing

Smart Cooking Thermometer App Development

Smart Cooking Thermometer with Auto-Timers Project Overview: I need an Arduino firmware + mobile app for a smart cooking thermometer that starts timers automati...

HL-40162640

Bluetooth LE Text Transfer SDK

I’m building an Android app on .NET 8.0 (C#) and now need a clean Bluetooth LE layer that focuses purely on data transfer. The peripheral expects short text com...

HL-40156791

Hybrid Noise-Canceling Bluetooth Earmuffs

I'm looking for a skilled website designer to design construction safety Bluetooth earmuff company website, instagram ect . Our target market is blue-collar wor...

HL-40151885

Flutter POS Bug & Printer Fix

I’m maintaining a Flutter-based mobile POS application and two issues are stopping us from rolling into production. The first and most urgent: the app crashes r...

HL-40150797

Expert Consultation for Firmware with ESP32 ESP-IDF for MAX86140 or ADS1293 or A2DP/I2S

My ESP32 ESP-IDF firmware is complete, but there are still some bugs. I need someone to review the code and find out what needs to be fixed. There are 3 tasks a...

HL-40144305

Wearable Watch PCB Layout Design

Developing the electronics for my new smartwatch, I now need the PCB layout completed to production-ready quality. The board must fit a typical round or squaris...

HL-40142938

Inventory NFC Tag App Co-build or cash payment

I’m building a cross-platform inventory application that talks directly to NFC tags so that stock can be added, counted, and located with nothing more than a ph...

HL-40138793

High-FPS Tiny Camera Development

I'm looking for an experienced engineer to design and develop a tiny camera for commercial production, exceeding 1000 units. Key Requirements: - High resolution...

HL-40135778

ELM327 DTC Reader Mobile App

I am looking for an experienced mobile app developer to develop an innovative OBD-II scanner app for Android and Apple (iOS) platforms, leveraging the ELM327 de...

HL-40135357

ESP32 Endüstriyel Tasarım & Yazılım

ESP32 tabanlı, GSM hatlı bir endüstriyel cihaz geliştiriyorum ve projenin omurgasını oluşturacak gömülü yazılıma öncelik veriyorum. Cihaz; SimCom GSM modülü, RF...

HL-40135185

Android Business App Update -- 2

I'm seeking an experienced Android developer to update a business app using Android Studio. The app will require: - Adding a new Bluetooth printer SDK. - API da...

HL-40134951

OBD-II Data Converter App Development

I'm looking for an experienced mobile app developer to create a native application for both iOS and Android. This app will convert OBD-II data from a BLE+ scann...

HL-40134573

IoT Firmware & Circuit Design

I’m bringing a new IoT device from idea to working prototype and need one partner who can handle both sides of the job: the electronic circuit design and the em...

HL-40131431

65% Keyboard PCB

I’m putting together a custom 65% mechanical keyboard and need a complete PCB schematic that brings a premium feature-set together in one tight design. Core req...

HL-40128287

Hardware Circuit Designer – Bluetooth Audio Toy (Low-Cost)

* Design a complete low-cost hardware circuit for a Bluetooth audio storytelling toy * Select and validate cost-effective electronic components suitable for mas...

HL-40127592

WayFinder Navigation & Mapping App

I need a full-featured WayFinder application whose core job is to provide clear navigation and directions. The experience has to work seamlessly from the moment...

HL-40125868

Small Sized bluetooth PCB Design

I’m developing a handheld consumer-electronics device and need a production-ready PCB that handles reliable WiFi / Bluetooth connectivity while fitting within a...

HL-40125459

Android App Development for ELM327 Adapter

I need an Android application that pairs with an ELM327 Bluetooth OBD-II adapter and performs a very limited set of diagnostic tasks. The goal is to give me a c...

HL-40121374

ESP32 Bluetooth Power Framework -- 2

I’m building a product around an ESP32 and I need a compact, reusable framework that handles two things flawlessly: complete Bluetooth support—both BLE and Clas...

HL-40120152

60% Keyboard PCB

I’m putting together a custom 60 % mechanical keyboard and need a complete PCB schematic that brings a premium feature-set together in one tight design. Core re...

HL-40119406

Android Kotlin OBD Data App

I am looking for a developer to build a simple Android app that connects to an ELM327 Bluetooth OBD-II device. The app is for a basic diagnostic test, not a ful...

HL-40113983

Compact ESP32 & SIM868 PCB Design

I need a production-ready CAD layout for a single, ultra-compact PCB that merges two existing boards into one tidy footprint. The board’s primary role is data c...

HL-40111463

Legrand Audio System Setup

I need help setting up my Legrand audio system, which is already installed but not operational. Tasks include: - Connecting Bluetooth devices - Setting up audio...

HL-40111466

Bluetooth-Enabled Locking Phone Box

I want to turn my concept of a lockable iPhone box into a working hardware prototype. The unit should open like a book, formed in durable hard plastic, and clos...

HL-40111094

Qualcomm QCC3084/QCC5181 Bluesuite Firmware Configuration

I’m building a Bluetooth-audio board (with USB Audio) around the Qualcomm QCC3084/QCC5181 modules and need the firmware generated before I spin the hardware. Th...

HL-40098568

Integrate Device SDK into Android

Project Overview: The project aims to develop a robust Android application capable of integrating with a variety of body composition measurement devices via Blu...

HL-40086278

KTA223 Bluetooth Integration for FarmerGPS

I need the KTA223 integrated with a Bluetooth module to control sprayers via the FarmerGPS software. The primary function is to start/stop devices. Key Requirem...

HL-40081487

Breath Analyzer PCB Design -- 2

I’m building a compact consumer-grade breath analyser and need a production-ready PCB that integrates the gas-sensing front end with Bluetooth connectivity and...

HL-40075156

Cross-Platform Bluetooth Connectivity Upgrade

I have a working Bluetooth application that now needs a focused upgrade. The priorities are clear: first, make its connectivity rock-solid; second, broaden the...

HL-40072770

iOS Smart Ring App with Docker

I need an iOS application that connects to my smart ring, collects the raw sensor values over Bluetooth LE, and then stores every data point on my home server i...

HL-40069084

Wearable Ring-Sized Smart Touchpad Design -- 2

I’d like to turn an idea I have into a working wearable: a ring-sized smart touchpad that behaves like a computer mouse. Picture a sleek band you slide onto you...

HL-40065630

Temperature Sensor Monitoring App

I need a full-featured mobile application that connects to temperature sensors and handles data coming from both indoor and outdoor environments. The core idea...

HL-40062031

Velocio PLC Control Integration - 13/12/2025 12:43 EST

I need a skilled professional to program a Velocio PLC and develop HMI graphics using vBuilder and vFactory. Additionally, you'll need to establish a Bluetooth/...

HL-40060312

Android Call UI with Hotwords

I’m building a modern-looking Android app that takes over the entire call experience. The app must answer or hang up when I say a custom hotword, whether I’m sp...

HL-40048003

Flexible Game Controller PCB Design -- 2

I’m building a next-generation video-game controller accessory and need a seasoned engineer to transform the idea into a production-ready flexible PCB. The boar...

HL-40044405

Install Smart Bluetooth Bathroom Mirror

I have a Bluetooth-enabled LED mirror that needs to be hard-wired and securely mounted in my bathroom beside an existing shaver socket (photo attached for conte...

HL-40044370

Android-ESP32 Bluetooth Commands

I’m putting together a compact control setup where an Android phone sends simple text commands to an ESP32 over Bluetooth. The user will only trigger a transmis...

HL-40043723

Flutter ESC/POS Printer Integration

My Flutter-based POS application needs a fully embedded printing module that talks directly to ESC/POS thermal printers—no RawBT or third-party bridges. The goa...

HL-40042890

Prototype Belflör Bloom Smartwatch

I’m taking Belflör Bloom from concept drawings to a fully working wrist-mounted prototype and need end-to-end help—hardware, firmware, and interface all in one...

HL-40042498

Design Ear Light Therapy Device

I’m developing an ear-worn light therapy device intended to lift mood while also promoting deeper, more regular sleep. I have the market research and clinical r...