Bluetooth jobs

...beyond that radius, a countdown starts (length to be parameterised in settings). When the timer expires, the handset performs a full factory reset. • The same timer-then-reset sequence is triggered whenever the watch is powered off or its Bluetooth connection is deliberately severed. • A unique, user-set PIN must be entered on the system lock screen to cancel the reset once it has begun. No PIN, no mercy—reset proceeds. Technical notes • Must run on Android 10 and above without root. • Should recognise any Samsung Watch that exposes standard Bluetooth LE/Galaxy Wearable APIs—no model restrictions. • Background service must survive reboots, battery-optimisation kills and Doze. • Reset must use the official Android Devic...

...correctly on the dock. - Integrated charging and battery protection circuitry. - Battery status monitoring. - Reverse-polarity protection or mechanically keyed contacts. - No USB-C charging port on the robot itself. The charging dock must also be included in the engineering design package, including PCB, CAD, STEP/STL, Gerber files, and manufacturing documentation. **F. Bluetooth and Computer Connectivity** - Bluetooth communication with a PC. - Wireless control of individual robots. - Independent arm movement control. - Forward and backward movement commands. - Communication with multiple robots. - Real-time transmission of sensor readings and robot status. **G. Programming and Real-Time Control** - Programmable microcontroller. - Firmware source code. - Python-based...

...CAD and 3D modeling (editable source files, STEP, STL, and manufacturing drawings). 2. PCB schematic and layout design, including Gerber files and BOM. 3. Two independently controlled robotic arms with adjustable angles and a target of 360° rotation. 4. Forward and backward movement mechanism. 5. Robot-to-robot docking and separation mechanisms. 6. Relative position detection between robots. 7. Bluetooth communication and microcontroller firmware. 8. Python-based PC software for real-time robot control and monitoring. 9. A dedicated 2-pin pogo-pin charging system and charging dock. 10. Complete manufacturing-ready files, assembly instructions, and component purchasing links. My total budget is **KRW 500,000**, including your design fee, components, and manufacturing costs. ...

...correctly on the dock. - Integrated charging and battery protection circuitry. - Battery status monitoring. - Reverse-polarity protection or mechanically keyed contacts. - No USB-C charging port on the robot itself. The charging dock must also be included in the engineering design package, including PCB, CAD, STEP/STL, Gerber files, and manufacturing documentation. **F. Bluetooth and Computer Connectivity** - Bluetooth communication with a PC. - Wireless control of individual robots. - Independent arm movement control. - Forward and backward movement commands. - Communication with multiple robots. - Real-time transmission of sensor readings and robot status. **G. Programming and Real-Time Control** - Programmable microcontroller. - Firmware source code. - Python-based...

...Overview I need an experienced PCB designer to create the PCB layout for a small precision encoder module with Bluetooth Low Energy (BLE) connectivity. The complete electronic schematic and BOM are already defined; your task is the board layout, design review, and preparation of full manufacturing data. A schematic review is required to confirm correctness before placement begins. Board Architecture: The board contains two functionally independent sections, which must be physically separated to avoid mutual interference: - Encoder section: STM32G474 microcontroller and its supporting peripherals, two AM26LV32E differential line receivers and ESDA6V1SC6 ESD protection device. - Bluetooth section: EBYTE E73-2G4M08S1CX BLE module (nRF52840-based, pre-certified) — the I...

My Android phone has stopped booting altogether—the ...or soft-brick scenarios. Familiarity with ADB, Fastboot, OEM-specific tools (e.g., Odin or SP Flash Tool), and secure data-backup methods is essential so that any repair steps preserve photos, contacts, and app data wherever possible. Deliverables • A fully functional, booting device on the latest stable build appropriate to my model • Verification that core services (calls, SMS, Wi-Fi, Bluetooth, Play Store) work correctly • A brief summary of the steps taken and any files used, so I can reproduce or undo them if needed I can provide the exact model number, current firmware version (if readable), and any error messages once we start. Let me know your estimated turnaround time and any prerequisites y...

...members. • Help select practical off-the-shelf modules where they reduce cost and development time. • Lead troubleshooting and integration testing. • Lead the final functional demonstration. • Deliver applicable engineering files and documentation. Preferred Skills / Experience: Mechatronics; Product Development; Embedded Electronics; Sensors; ESP32/MCU Systems; Displays; Addressable LEDs; Wi-Fi/Bluetooth; Camera/Audio Integration; Troubleshooting; Hands-On Prototyping COMPENSATION - $700 USD FOR THIS TEAM MEMBER Fixed Price: $700 USD for this individual position. The selected professional for this position will receive $700 USD total for successful completion of the complete assigned scope. HappyMat is assembling a multidisciplinary engineering team. Each ...

...Hardware Prototype Project Description: HappyMat(TM) is developing a smart interactive physical product incorporating embedded electronics, sensors, LED lighting, a digital display, Wi-Fi/Bluetooth connectivity, and other interactive features. We are seeking an IoT / Mobile-Web Control Interface Engineer to develop a simple control interface for HappyMat Prototype #1 and collaborate closely with our embedded/firmware engineer. Primary Responsibilities: • Develop a simple mobile-friendly or web-based control interface. • Communicate with the HappyMat embedded controller over the selected Wi-Fi/Bluetooth architecture. • Provide basic controls for applicable prototype functions. • Coordinate directly with the embedded firmware engineer. • Support a...

...prototype's embedded controller, firmware, sensor integration, LED control, digital display, wireless communications, and associated hardware/firmware integration. Primary Responsibilities • Develop and configure the embedded controller and firmware. • Integrate pressure/presence sensing. • Integrate addressable LED lighting. • Integrate the digital display. • Implement Wi-Fi connectivity. • Implement Bluetooth/BLE connectivity. • Support camera, speaker, and microphone integration. • Coordinate with the IoT/interface engineer where applicable. • Troubleshoot electronics and firmware during integration. • Deliver applicable firmware/source code, configurations, and wiring information. Preferred Skills / Experience ESP32 or S...

...speaker. - Voice reminders should be stored locally and played at scheduled times. - Example: «“Dadi, it’s time to take your medicine.”» - Ideally, the caregiver should be able to record their own voice through a simple phone interface and transfer the recording to Mitra. - Preference is real human voice recordings, not robotic TTS. 4. Connectivity - ESP32 as the main controller. - Wi-Fi/Bluetooth for caregiver communication. - GSM/cellular module for independent emergency SMS. 5. Battery - Rechargeable battery. - Charging and battery-protection circuitry. - Suitable for portable wearable use. --- Proposed Hardware The exact components can be recommended by the developer, but the expected architecture is approximately: - ESP32 / compact ESP...

I need a qualified auto-electrician to remove the factory stereo from my Toyota Prado and fit the new aft...fit the new aftermarket head unit I have already purchased. The car is ready in my driveway, power and lighting are available, and I would like the job completed in a single visit if possible. Key points you should know: • Vehicle: Toyota Prado (car) • Parts on hand: brand-new head unit, fascia kit, and basic plug-and-play harness • Expectations: clean wiring, full functionality of radio, Bluetooth, and steering-wheel controls once the job is finished Please bring any additional adapters, tools, or crimp connections you normally use to keep the install tidy and OEM-looking. A brief note about your experience with Toyotas or similar SUV installs will help...

I'm looking for a skilled speaker designer and maker to help build a Bluetooth speaker primarily for indoor use. I am the designer of the speaker, I am looking to make the design into a workable speaker. Key requirements: - High-fidelity sound quality - Long battery life Ideal skills and experience: - Expertise in acoustics and audio engineering - Experience in arduino, coding and electrical knowledge for speakers - Knowledge of prototyping, battery technology.

...The developer must demonstrate waveform smoothness on real Android and iOS devices, not only in an emulator. 2. COMMUNICATION THROUGH BOTH WI-FI AND BLUETOOTH The application must support communication between devices through both: - Wi-Fi. - Bluetooth. Bluetooth is a required communication method. It must not be omitted and must not be used only for device discovery. The application should support: - Nearby-device discovery. - Device selection. - Connection status. - Connection errors. - Temporary connection interruption. - Reconnection where technically possible. - Safe disconnection. The developer must test both Wi-Fi and Bluetooth on real devices. During communication, the ECG and other waveforms must continue to work smoothly. APPLICATION MODES ...

Hello, I am looking for an experienced electronics/PCB engineer to design a compact production-ready PCB. This is a redesign of a previous project, so manufacturability, component selection, reliability and proper engineering are particularly important. Main requirements The PCB must include: * ESP32 with Zigbee / Thread / Matter support * Wi-Fi support is mandatory. * Bluetooth support is mandatory. * The selected ESP32 must provide sufficient RAM and flash memory with reasonable headroom for the networking stacks and our application firmware. * ESP32-C6 may be considered, but the designer may propose a more suitable Espressif device if technically justified. * The final MCU/module selection must be agreed before PCB layout. * USB-C port * Used for firm...

...Initial Hardware Requirements Target input power: - 24 VDC industrial supply Proposed I/O: - 8 × 24 VDC Digital Inputs - 8 × protected 24 VDC Digital Outputs - 4 × Analog Inputs - 2 × Analog Outputs Preferred analog support: - 0–10 V - 4–20 mA Communication interfaces may include: - Ethernet - RS-485 / Modbus RTU - Modbus TCP - CAN or CAN-FD - USB-C service/programming port - Wi-Fi - Bluetooth/BLE Additional features may include: - RTC - Non-volatile memory - Hardware watchdog - Diagnostics - Status LEDs - Expansion interface for future I/O modules ## Firmware Requirements For the initial version, we do not necessarily require CODESYS, OpenPLC, or a graphical Ladder programming environment. The main controller can be programmed dir...

I'm looking for an independent mobile QA engineer to help test a connected product combining an iOS/Android mobile application and Bluetooth Low Energy hardware. This role focuses on critical user journeys, Bluetooth reliability, regression testing and reproducible defect reporting. Scope - Test critical mobile journeys on iOS and Android - Test Bluetooth Low Energy pairing, connection and reconnection - Test first-time device setup and first successful measurement flow - Test permissions, Bluetooth state changes and common failure scenarios - Test app behaviour after interruption, backgrounding and relaunch - Test synchronization and persistence of measurements - Execute regression testing after new builds - Build and maintain structured test cases - Repr...

...application, Firebase backend and Bluetooth Low Energy hardware. This is primarily a technical review and acceptance role, not a full development assignment. Scope - Review the existing Flutter / Firebase architecture - Review Bluetooth Low Energy integration and device SDK constraints - Review technical documentation from the hardware supplier - Help assess hardware samples against predefined technical acceptance criteria - Review implementation plans before development - Review critical technical deliverables - Identify architecture, reliability and integration risks - Document recommendations and acceptance / rejection decisions Profile required - 5+ years of software development experience - Strong Flutter experience - Strong Firebase experience - Proven Bluetooth...

...unfinished hardware already works. Headphone software demonstration Create a simulated Nexora Pulse control interface based on the attached product concept. Controls can include: ANC Transparency Normal Sound Profile EQ Battery Connected Devices Personalised Audio Head Tracking — Future Feature For the MVP these controls can operate against a software simulator/mock device. Actual Bluetooth/ANC firmware integration will be a separate engineering project once functional hardware exists. Accessibility Accessibility is central to the Nexora concept. Please include: • Adjustable text size • High-contrast option • Reduced animation/motion • Keyboard navigation • Clear navigation • Simple interface mode • Adjustable notificatio...

The goal is to wire every layer of a new pair of smart glasses—from the on-board sensors right through to an Android companion app—so that the device behaves like a polished, consumer-ready product. Hardware & low-level work • Pair, stream and reconnect reliably over Bluetooth Low Energy while also supporting high-bandwidth features across Wi-Fi sockets. • Drive the critical modules selected for this build: the camera, IMU sensors, plus the speakers and microphones. • Optimise power draw, heat and battery life; handle sleep / wake cycles intelligently. Middleware • Integrate the OEM SDK, which exposes Android libraries first, and bridge any native C/C++ portions that sit beneath those Kotlin/Java calls. • Build or adapt media pipe...

...single codebase (Flutter, React Native, Qt or a framework of your choice) is fine as long as all four platforms are delivered. Core features • Live shot display with 10-ring scoring for both air pistol and air rifle distances • Match mode (series, finals) and open training mode • Shooter history with session archive, group size and average score stats • Easy pairing with the target over Bluetooth or Wi-Fi and automatic reconnection Deliverables 1. Compiled apps for iOS, Android, Windows and macOS 2. Complete source code and build instructions 3. Firmware and hardware files for the Arduino/ESP32 target 4. A short setup guide so I can assemble, flash and test the system on my range Once the prototype consistently reports shots and the apps dis...

...children, elderly people and individuals who travel or stay alone connected to an AI cloud server. The product consists of a compact hardware device with SOS button, GPS module, SIM module, rechargeable battery, PCB, enclosure, Bluetooth and a separate siren unit. (Both the hidden device and the siren box have separate chargeable batteries). The user can activate emergency mode by pressing the SOS button three times within a short duration. This reduces accidental triggering and enables rapid activation during panic situations. Once activated, the device triggers a Bluetooth connected loud siren that is kept in the hand bag to attract public attention and discourage the attacker. The siren enclosure also has a camera to click images an a voice recorder to record the surrou...

I have a wearable safety band prototype that must deliver reliable health monitoring, starting with continuous heart-rate tracking. Your task is twofold: write the embedded firmware that runs on the band and create the companion mobile application. On the firmware side, you will read the heart-rate sensor, filter and average the data, manage power, and broadcast everything over Bluetooth Low Energy. I will supply the full hardware schematic, sensor datasheets, and preferred MCU (nRF52 series) once we begin. For the software side, I need a user-friendly companion app that pairs with the band, shows real-time and historical heart-rate graphs, stores data locally, and syncs to a cloud back-end. It must be ready for both iOS and Android, so you can choose native (Swift / Kotlin) or a ...

I have a wearable safety band prototype that must deliver reliable health monitoring, starting with continuous heart-rate tracking. Your task is twofold: write the embedded firmware that runs on the band and create the companion mobile application. On the firmware side, you will read the heart-rate sensor, filter and average the data, manage power, and broadcast everything over Bluetooth Low Energy. I will supply the full hardware schematic, sensor datasheets, and preferred MCU (nRF52 series) once we begin. For the software side, I need a user-friendly companion app that pairs with the band, shows real-time and historical heart-rate graphs, stores data locally, and syncs to a cloud back-end. It must be ready for both iOS and Android, so you can choose native (Swift / Kotlin) or a ...

I have an ESP32-WROOM module that must listen over Bluetooth to an existing third-party Android app and correctly understand the hexadecimal data it broadcasts. The job is to deliver rock-solid firmware that: • Opens a reliable Bluetooth (Classic or BLE—whichever you judge more stable for continuous streaming) serial link. • Receives every incoming packet from the app, parses the raw HEX string byte-by-byte, and exposes the interpreted values in a simple way (e.g., struct, JSON over serial, or clearly commented variables). • Includes clear in-code comments so I can expand the logic later if I decide to act on those values. I will load the code with Arduino IDE, so please keep the project compatible with that toolchain or provide a straightforward Pl...

I have an existing Android application written in Java. The complete Android Studio source code is available and the application is already working in production. I need an experienced Android Java developer to make several specific fixes and small enhancements. This is not a new app development project. Main tasks: 1. Bluetooth thermal printer compatibility - Existing NETUM NT1809 printing must remain unchanged. - Add/fix support for a PT210 ESC/POS Bluetooth printer. - Main issue is formatting/font behavior of the Defect Tag, Minus-Carton Tag. - Physical printer testing may need to be coordinated with me. 2. Fix EXTRA carton status - EXTRA status currently carries over to following inspection records. - EXTRA must belong only to the applicable record/cart...

I need an experienced PCB designer to create electronic circuit layouts and PCB designs based on provided architecture. The project involves designing for a consumer electronics radio device wi...electronic circuit layouts and PCB designs based on provided architecture. The project involves designing for a consumer electronics radio device with key functionalities. Key Requirements: - Wireless connectivity - Battery management - Sensor integration Ideal Skills & Experience: - Expertise in PCB design and electronic circuit layout - Experience with wireless connectivity protocols (Wi-Fi, Bluetooth, Zigbee) - Knowledge in battery management systems and sensor integration - Familiarity with consumer electronics design standards and requirements Please share relevant portfolios a...

I already have a working prototype for a small motor-driven device, but the current PCB needs refining before I can move toward production. I’m looking for someone to step in, update the board, and help me decide whether it should ultimately run from an on-board battery or a wired supply. Also decide to use a switch or not. It’s also a Bluetooth powered device for wireless operations, but additional options can be added to suit other conditions. Here’s what I need: • Tidy up component placement so the layout is cleaner and easier to assemble in the enclosure. • Modify the circuit where necessary to make it more compact. It should be compliant with EMC and expected to pass any tests • Adjust the board outline; the enclosure has changed slightly, so...

I am developing...Massager. I have China Based Eye Massager for Reference and duplicate functions from it. I want to design PCB for same function in smallest PCB board or using Raspberry pi or any open source board. There are three main function: - Pressure (Controlled by Pressure or Diaphragm Valve and Solenoid Valves) - Heating (Controlled by Heating Pads) - Vibration (Small Vibration Pads) - Sound using bluetooth connectivity Required programming for User control buttons as well. Then I want to control those functions using Mobile Application. Deliverable: - Programmed and Tested PCB Board along with all Components as one package - All Original Source, Data, Programs etc I will supply Plastic Enclosure to mount all items inside it. Looking from someone based in Ahmedabad...

...ON and OFF and let me set timing schedules from a smartphone over Bluetooth. The wireless link is the only command channel I expect to use—no analog or hard-wired digital inputs—so please choose components and firmware that make a stable Bluetooth connection simple for an everyday user. Key points to cover • Motor type: single-phase AC, 220 V supply. • Functions: instant ON/OFF plus programmable countdown and recurring timers. No speed or torque regulation is required. • Control method: Bluetooth LE connection to an Android / iOS app (a basic demo app or clear API documentation is fine). Deliverables 1. Schematic and BOM for the controller board, including protective circuitry for the AC load and an onboard Bluetooth mod...

...I use one smartphone as the “caller” device, enter each number through an on-screen keypad, and—instantly—the called number appears on a second smartphone or tablet that acts as the audience display. Every number must also be read aloud automatically through text-to-speech so the room hears it without my needing a microphone. Core requirements • Real-time sync between the two devices over Bluetooth, local Wi-Fi, or an auto-connecting peer-to-peer method you propose. Lag should feel nonexistent. • Clean, full-screen board on the display device that highlights the latest call, darkens past numbers, and shows totals left. • Intuitive caller interface on my controller phone—large buttons, undo/redo, pause, and game reset. • C...

...pair over Bluetooth; once connected, they shift colour or intensity in sync with the music’s energy. • AI companion: an in-room chatbot picks up the vibe, recommends songs, handles quick commands (“dim lights”, “brighter chorus”), and keeps conversation flowing. • Rooms: users browse public rooms or design their own by choosing a theme, colour palette and starter playlist, then invite friends with a link. What I need from you 1. Full mobile build (native, Flutter or React Native—open to your best recommendation) covering playback, Bluetooth control and real-time chat. 2. Backend services for user accounts, room management, playlist storage and AI integration. 3. Clean, modern UI that feels effortless in dark or lig...

...coverage. - Local database/storage should securely retain all relevant data. - Users should be able to continue scanning and printing labels while offline. - The app must prevent data loss if connectivity is interrupted. 3. Label Creation & Printing - Create and edit labels directly from the mobile app. - Generate labels based on scanned/article information. - Immediate label printing. - Support Bluetooth and/or Wi-Fi label printers, depending on the printer model. - Print jobs should be handled reliably even when the device is temporarily offline. 4. Automatic Synchronization - When internet connectivity returns, the app should automatically synchronize local data with the central server. - Background synchronization is required. - Sync should handle failed uploads/retri...

I need a production-ready KiCad project that captures the entire electronics of a low-power Wi-Fi/BLE smart safety watch. The schematic must pull together every subsystem – radio, sensing, power and user-interface – into one cohesive, ERC-clean design I can take straight into layout once I sign off. Core hardware blocks you must include • Dual-mode Wi-Fi + Bluetooth LE module • MEMS microphone and compact camera for image & audio capture • 6-axis IMU with fall/motion-detection interrupt lines • SOS trigger circuitry and vibration motor / buzzer driver • Color display interface, external flash and USB-to-UART/USB-C charging port • Li-ion cell, charger IC, fuel-gauge, power-tree with deep-sleep rails • Robust OTA firmware...

I need four ceiling speakers installed in my kitchen, connected to a mini Wi-Fi stereo amplifier. Requirements: - Installers should have experience with ceiling speaker installation and familiarity with Wi-Fi stereo amplifiers. - I have the speakers and amplifier; I need only installation. - I have a general idea for speaker placement but am open to suggestions - Additional features like Bluetooth or voice control are not required Ideal skills and experience: - Proficiency in home audio installation - Ability to advise on optimal speaker placement - Knowledge of Wi-Fi connectivity and setup

...Project Overview: Participants will use Google Gemini Live, connected via Bluetooth, Android Auto, or Apple CarPlay, while having natural conversations inside their cars. This real-world data will help improve the voice assistant's performance. ### Task Details: 1. Sit in your car. 2. Connect your phone to the car using Bluetooth, Android Auto, or Apple CarPlay. 3. Start Google Gemini Live using a test account (provided by us). 4. Have a natural conversation with Gemini Live (~10 minutes and 18 conversation turns per session). 5. Record audio and save details about the conversation as per instructions provided. ### Requirements: - Device Compatibility: • Android smartphone or iPhone • Vehicle supporting Bluetooth Audio AND/OR Android Auto/CarPla...

...signal over Bluetooth Low Energy using the IndieSemi IS2064GM-0L (). The goal is straightforward: create a robust BLE channel that lets the tag to send signal. Here is what I already have in place: • Hardware prototypes based on the IndieSemi chip for both tag and anchor • Basic ADC input on the tag and DAC/output stage on the anchor • A rough concept of the desired latency and power targets Acceptance criteria • Measured packet loss below 1 % at three metres line-of-sight • Source code builds with the current IndieSemi SDK without warnings If you have shipped similar BLE audio or low-latency data links before, please outline that experience in your bid and mention any tools (e.g., Nordic nRF Sniffer, Ellisys Bluetooth Analyzer)

...need a complete IoT gateway hub that brings LTE (4G), Wi-Fi, Bluetooth, Zigbee and sub-GHz RF into a single, reliable unit for remote monitoring and alerting of smart-home devices. The goal is straightforward: gather data from a variety of in-home sensors and actuators, push it to the cloud over cellular when Wi-Fi is unavailable, and relay actionable alerts back to the user in real time. Here is what I expect: • Hardware design that accommodates the five radios with proper coexistence planning, power management and antenna layout. • Embedded firmware that can automatically select the best back-haul (LTE or Wi-Fi), maintain secure connections and expose a clean API or MQTT/HTTP interface for the smart-home layer. Also with bluetooth, zigbee and rf. • Del...

I'm seeking a designer to create a slider keyboard case for an iPhone 13 Pro Max that integrates a mini keyboard. The design must prioritize ergonomics and usability, ensuring comfortable and efficient use. Key Features: - Backlit keys for low-light usage - Shortcut keys access for enhanced productivity - Adjustable angle for customizable viewing and typing -Mag safe connection if possible -Bluetooth connectivity Ideal skills and experience: - Expertise in ergonomic product design - Proficiency in designing for mobile accessories - Strong understanding of user interface and experience Please provide a portfolio showcasing relevant design work.

I am developing a smart-home edge AI device called MEGA. I need an engineer to develop the core software platform / MEGA OS for an embedded Linux-based device, together with the backend architecture and web application. The system must support: Embedded Linux Voice AI Local/Edge AI Wi-Fi / Bluetooth MQTT Matter / Zigbee integration Device management Local automation Secure API WebSocket real-time communication OTA firmware/software updates User accounts and permissions Web dashboard Device monitoring and configuration Future camera/Vision AI support for MEGA Pro MEGA Core and MEGA Pro must run the same MEGA OS architecture. MEGA Pro will additionally support camera-based vision and person recognition. I am looking for someone capable of designing the architecture first, then develop...

...software design—so your task is to turn our board files and SoC documentation into a bootable, stable Android build. You’ll start with the raw schematics, a reference bootloader, and chipset manuals that I’ll supply. From there, I expect a tailored AOSP-based image or similarly lean Android flavour that: • boots on our development board • brings up display, touchscreen, audio, LTE, Wi-Fi, Bluetooth, sensors, and camera drivers • includes a demo UI/UX that shows core functions and allows basic performance testing Deliverables - Source-controlled Android build (Git) with clear commit history - Board Support Package, HAL layers, and any custom kernel patches - Step-by-step build, flash, and debug documentation - Short video or live sessi...

...battery-powered unit that can: • Detect the standard Temporal 3 smoke-alarm acoustic signature in real time • Respond instantly with strong, patterned haptic vibration motors • Communicate via Bluetooth with a companion mobile app for configuration, status and firmware updates Everything else builds around that core. The job spans custom PCB design, component selection, enclosure layout, embedded firmware, signal-processing algorithms, the mobile app (iOS and Android), and usability testing with DHH participants. I’m open to adding a visual strobe in later revisions, but phase one must nail the vibration and Bluetooth pipeline first. Deliverables 1. Schematics, BOM and Gerber files for the prototype PCB 2. Assembled working prototype with tu...

I need an end-to-end mobile application that can communicate over Bluetooth. The core purpose is to discover nearby devices, establish a reliable connection, and exchange data or commands in real time. At this stage I am still shaping the detailed feature set—pairing workflow, transfer protocols, optional UI for device control, and the exact target platforms (Android, iOS, or both) are all open for discussion. What I do know is that the solution must use native Bluetooth APIs efficiently, keep the connection stable in the background, and follow each platform’s latest permission guidelines. If you have shipped Bluetooth-centric apps before and can point to projects where you handled scanning, bonding, and live data exchange, I’d like to see how y...

...through doorways or hallways, and stop safely when I stop. Because it is for personal use on smooth indoor surfaces, size and noise matter more to me than ruggedness or high speed. Here’s what I need from you: • Select or design a compact chassis, drive train, and battery that can run at least 30 minutes on a single charge. • Recommend and integrate the sensing stack—camera, ultrasonic, LiDAR, Bluetooth beacon, or any mix you believe best balances accuracy and cost—for reliable human-following and basic obstacle avoidance indoors. • Write the control firmware / software, preferably in Arduino-compatible C++ or Python (I’m open to your preferred stack if you justify it). • Provide a complete bill of materials, wiring diagram or ...

...voice recognition, the user taps a mic button, dictates a short text entry, and the app turns that speech into a new text record. No internet access should ever be required for either storage or recognition. Because the data belongs to the user, the app also needs a simple way to move the database to another phone or tablet. A “Share database” option that packages the file and sends it over Bluetooth, AirDrop-style sharing, email, or any other standard Android share intent will work. On a receiving device, the user should be able to import or merge the file and keep using the app without losing earlier entries. Timing is critical—I’d like a functional APK and source code as soon as possible. Deliverables • Production-ready APK • Full And...

...remaining hours, and suggests smarter break or dispatch options before problems arise. The solution has to live everywhere my team does, so plan on native iOS and Android apps for drivers and a responsive, Web-based dashboard for dispatch and compliance staff. I’m open to the languages, frameworks, and cloud stack you believe will scale best—just explain why your choice makes sense for low-latency Bluetooth/vehicle-bus connections, AI workloads, and secure DOT data retention. To help you scope the build, here’s what I expect at minimum: • Driver mobile apps with editable logs, automatic DVIR creation (think Dlog-style ease), and offline sync • Back-office portal that consolidates every truck, driver, and alert in real time • AI layer that d...

...vehicle through Bluetooth or Android Auto. Participants will have natural conversations with Gemini, verify the generated recording files, and upload the completed data following our instructions. This is a remote, guided project, and detailed documentation will be provided throughout the process. Requirements Android smartphone IOS Phone Access to a vehicle Vehicle must support the following: Bluetooth Audio (BT-A) Android Auto/Car Play (Wired) Android Auto/Car play (Wireless) Stable internet connection Ability to follow detailed instructions Ability to upload recorded files Project Tasks Participants will: Install Google Gemini using a test Google account provided by us. Verify that Gemini Live is functioning correctly. Connect their Android phone to their vehicl...

...that detects fake drugs and food. The device connects to a phone via Bluetooth and sends 18 channels of spectral data. The phone camera captures a Raman spectrum image. The app compares the data to an offline database and shows a simple Green (genuine) or Red (fake) result. What the app needs to do: Connect to an ESP32‑S3 device via Bluetooth Low Energy (BLE) Send a "START_SCAN" command to the device Receive 18 numbers (NIR spectral data) from the device Open the phone camera to capture a Raman spectrum image Compare both data sets to a local offline database Display a result: Green (genuine) or Red (fake) Save scan history locally Requirements: Experience with Flutter or React Native Experience with Bluetooth Low Energy (BLE) Experience with ...

...modulation, clock recovery, and protocol framing. My priority is signal integrity across the entire chain: low-noise transimpedance amplification, precise ADC/DAC selection, and robust high-speed PCB layout that minimises jitter and EMI. Component choices should be commercially available and cost-effective for a small production run. Because the target is an optical wireless channel rather than Bluetooth, Wi-Fi, or Zigbee, you are free to choose or recommend the most suitable modulation scheme (e.g., OOK, VPPM, OFDM) provided the final design can sustain a reliable link at ≥100 Mb/s over a 5-10 metres in typical office lighting. Deliverables • Complete schematic in Altium, KiCad, or equivalent • PCB layout files and Gerbers ready for manufacturing • A...

...Tapping a button on the phone should send an immediate command to the ESP32 so the device reacts with minimal latency. I already have the firmware running on the board; what I need from you is the Android side: screen layout, reliable connection logic, and simple feedback to confirm each command was sent. I’m open to whichever transport layer you feel is most robust with the ESP32 (classic Bluetooth, BLE, Wi-Fi sockets, HTTP requests, etc.); just outline your choice and why. Data monitoring and alert notifications aren’t required now but I’d like the architecture to leave room for them later. Deliverables • Signed APK for quick testing • Full Android Studio project with readable, well-commented code • A short read-me explaining build s...

...complete IoT gateway hub that brings LTE (4G), Wi-Fi, Bluetooth, Zigbee and sub-GHz RF into a single, reliable unit for remote monitoring and alerting of smart-home devices. The goal is straightforward: gather data from a variety of in-home sensors and actuators, push it to the cloud over cellular when Wi-Fi is unavailable, and relay actionable alerts back to the user in real time. Here is what I expect: • Hardware design that accommodates the five radios with proper coexistence planning, power management and antenna layout. • Embedded firmware that can automatically select the best back-haul (LTE or Wi-Fi), maintain secure connections and expose a clean API or MQTT/HTTP interface for the smart-home layer. Also with bluetooth, zigbee and rf. &bull...