Battery charging trabalhos

...payments only in Tether (USDT) BEP-20, similar to what is done at PixSwap (). I would like to allow my customers to buy USDT directly from me, using the PancakeSwap API for token purchases and the EFi API (formerly Gerencianet) to process payments via PIX. The API documentation can be found at Additionally, I plan on charging a fee on each transaction. The workflow would look something like this: The user inputs the amount of USDT they wish to purchase and the wallet address where they want the tokens to be sent. The system uses the EFi API to process the payment via PIX. Once the payment is confirmed, the system uses the PancakeSwap API to purchase the requested amount of USDT. The system then sends the USDT tokens

O objetivo principal é apresentar quais sistemas de armazenamento de energia elétrica com base em baterias Battery Based Energy Storage Systems (BESS). buscando o estado Arte como forma de comparar o que se tem disponível no mercando nacional e internacional. Colher informações sobre de que forma as alternativas de acumulares energia em blocos, com uso de baterias, auxiliam na otimização das instalações de geração, transmissão e distribuição. Propondo melhoria no modelo de especificação para sistemas híbridos de geração de energias renováveis. Desenho do Trabalho. 1 - Introdução 2 - Delimitação do Tema 3 - Metodologi...

...and that the driver chooses when to start / end the event 5) Workday Control. The Driver would be limited within the working hours, not being able to deliver anything after the end of the working day 6) Control of distance traveled and time to each task 7) Option to re-schedule delivery (within the task, have a button to re-schedule the delivery to the customer) 8) Make the app work even though battery saving mode is on 9) Panic button - to use in case of emergency Example of project: IBOX Espanol Tenemos una aplicación de control de entrega. Necesitamos mejorar para que funcione sin conexión. y también mejorar la cuestión del control de desplazamiento (GPS) tales como el control de velocidad y otras mejoras Necesitamos los siguientes puntos: 1) H...

...der um custo baixo se possível e eficiência. the project is for student purposes. I want a program that control four stepper motors, 4 engines have to get together 20kg in total. The motors have to rotate 360 ° forward and backward. They will be controlled by remote control radio. I would like to know which components to use anger in the project, which the voltage source to use it, and a battery that lasts a long time. The project has to give a low cost if possible and efficiency....

...pessoal, que pode ser facilmente transportado em ônibus ou metrô especificações: Max Speed: 15kmh Distância ao redor 13-20km (depende do peso do piloto, as condições das estradas, etc.) Max inclinação em torno de 15 ° -30 ° (depende do peso do ciclista) Battery 36V 4.4AH * (158WH) LG bateria de lítio da marca mais alta 500W de potência Usando temperatura de 10 graus centígrados -40 graus centígrados (recomendando a 10 graus centígrados -30 graus centígrados) de carga máxima 120 kg Engin 350W Charging AC110-240V tensão 50-60HZ Tempo de carregamento Cerca de 60-120 Mins proteção Velocidade 10 kmh (conter) -15km...

Possuo um laptop "Razer Blade" e preciso de uma bateria para substituir a original que foi danificada (a bateria não tem como ser reparada, precisa realmente ser trocada). Segue as especificações: NOTEBOOK - Razer Blade @ 2013 -Model No.: RZ09-0102 -Rated 19V === 7.9A -Product No.: 01021101 BATERIA - Li-ion Battery Voltage: DC 11.1V Capacity 6400mAh watt-hour rating: 71.04Wh Operating Temperature: 0ºC-45ºC A bateria tem que ser a padrão do notebook pois ela é interna e não externa. Segue em anexo fotos para mais detalhes. O QUE EU QUERO PARA O SERVIÇO: que encontrem onde a bateria poderá ser comprada, independente de ser em loja no Brasil ou exterior (website), mas que entregue em BRASÍ...

...Token para conexão entre carregador e device. UC-KEY na foto --------------------------------------------------------------------------------------------- Charger for mobile / tablet with Bluetooth communication Fixed device charger then 110 ~ 220V Output 5VDC for portable devices with controlled current 1 to 2.5A with through BT communication with the device. Mobile device Internal battery charger 5VDC Output for portable devices with controlled current 1 to 2.5A with through BT communication with the device Token connection between charger and device. UC-KEY in the picture_...

The application overview (web and mobile - iOS and Android) The main idea of this platform is to permit people to offer their services through it, and consumers to ask for products or selecting one of the products available on a given day. 1. Home Screen View brief input display while charging the system. Options: 1.1 Screen for new user registration, either supplier or consumer. 1.2 OR geolocation screen, if the user is already registered and go automatically access to the registered data. 2. Options, on the same screen, for: 2.1 Delivery of products - by clicking on this screen, you should see another screen with product features, value, date and approximate time for delivery, photos of the product to be delivered, the supplier photos and your workplace, the s...

Hello, My site is I have a news site in joomla 3.2 platform, and whenever we have more than 200 hits at the same time, the MySQL server is unavailable. I have a VPS plan at BlueHost enhanced with the following configuration: 4 Core CPU 8 GB RAM CentOS 6 When the site is running, the charging time is too high. The home page takes 20 seconds to load. I also use Cloud Flare tool. I need to optimize the site to avoid this overhead on the server, and allow faster loading of pages. ------------------------- Olá, Meu site é Tenho um site de notícias na plataforma joomla 3.2, e sempre que temos mais de 200 acessos ao mesmo tempo, o servidor Mysql fica indisponivel. Possuo um plano de VPS avançado na BlueHost com a segui...

Eu tenho trabalho contínuo relacionado ao nosso projeto anterior 2 circuits: shunt resistor and rechargeable battery to Arduino microcontroller'

Eu tenho trabalho contínuo relacionado ao nosso projeto anterior 2 circuits: shunt resistor and rechargeable battery to Arduino microcontroller'

...Power Source: Battery-powered with optional mini solar panel for recharging. Standby Battery Life: Minimum 1 year without charging (low-power mode). User Interface: Single button for activation; 2 LEDs for status feedback. Key Features Programming: Device can be programmed with fixed location coordinates (e.g., via USB, Bluetooth app, or initial setup). Activation Sequence: Press button once (short press): Activates 2nd LED (glows red) as confirmation; auto-off after 2 minutes if no further action. To send distress signal: Short press followed by long press (5 seconds). Upon successful transmission: 2nd LED turns green for 20 seconds, then returns to standby (off). LED Indicators: LED 1 (Status): Steady red when device is powered on and ready to transmit. Flashes...

My 4.5 V circuit needs a small solar panel and the proper charge-management hardware so daylight tops the battery up automatically. I’m not sure what panel voltage or wattage is best, nor which controller IC will keep the Li-ion safe—so I need your electronics expertise. Scope of work – I'll share my schematic of the existing 4.5v circuit – Select or design a charge-controller stage that handles lithium-ion chemistry, prevents over-charge/over-discharge, and outputs a stable 4.5 V rail to the load. – Provide a clear schematic, concise BOM with part numbers that are easy to source, and wiring instructions I can follow on perfboard or a small PCB. – Advise on any protection components (diodes, fuses, reverse-polarity safeguards) so the...

I’m looking for reliable help sourcing and supplying budget-friendly replacement batteries for popular smartphone models. The goal is to keep cos...with, volume handled, or repair shops you’ve supplied will help me gauge fit quickly. If you already have a vetted supplier network, even better. Typical deliverable: • A short list of available battery options per model (with MOQ, unit cost, lead time, and warranty/return terms). • Confirmation that each item passes standard safety certifications (CE, RoHS, or regional equivalent). • Estimated shipping timeline to my location once we move forward. I’m ready to move ahead as soon as I see evidence of similar successful projects, so feel free to attach photos or invoices from previous battery ...

I run a solar energy company focused on the Jamaican market. I am looking for a designer to build a structured, reusable Instagram content template system in Canva — not random one-off posts. This is for a product-led solar brand. We sell: • Portable power stations • Home hybrid solar systems (5kW–12kW+) • Battery storage systems • Surge & lightning protection The goal is to create a clean, premium, professional look while allowing space for bold, attention-grabbing Caribbean-style headlines. What I Need: • 9–12 Instagram square post templates • 3–5 Story templates • 3 Reel cover templates • Fully editable in Canva • Clear font hierarchy and layout structure • Defined colour palette • Designed a...

I have a complete draft of our Battery Energy Storage System manual in a mixed English-Polish Word file and a folder with all supporting diagrams and photos. The content itself is solid, yet it needs the eye of a native-level Polish technical editor who can elevate both language and presentation to a premium standard. My two objectives carry equal weight: the finished document must impress clients during hand-over and satisfy certifying bodies during compliance reviews. With that in mind, I want you to focus first on the visual layout and design. I’m aiming for a Tesla-style look—sleek, spacious pages, consistent hierarchy, and polished typography—while making sure every table, warning box, and diagram is unified and easy to navigate. Here’s what I expect a...

1. System Architecture & Rapid Concept Design Simplified system architecture, motor & magnet sizing, battery calculation

...iOS Engineer to build the core architecture of a Real-Time Computer Vision Application. The app requires a high-performance video pipeline that captures frames, runs local inference (CoreML), and selectively sends data to a Cloud LLM API. This is a pure engineering challenge. We need clean, modular code that handles concurrency, thermal management, and hardware switching without draining the battery instantly. Phase 1 Scope (MVP): You will build a functional "Skeleton App" focusing on performance and stability using the internal camera. Key Technical Requirements: Advanced Camera & Audio Pipeline (AVFoundation): Implement a robust AVCaptureSession to handle video buffers (CMSampleBuffer). CRITICAL: The architecture must support Hot-Plugging External Devices. ...

...to create a complete shared-powerbank solution for cafés and restaurants in Indonesia. The project covers two physical products—the box charging station itself and the individual powerbanks that dock inside it. What I expect • A modern, premium look that instantly catches the eye in busy food-and-beverage venues while remaining durable for high-traffic use. • Cohesive styling between the station and the powerbanks, with clear brand surfaces for future decals or logos. • Thoughtful ergonomics: smooth user flow for pick-up, return, and payment scanning, plus quick-swap maintenance access for staff. • Scalable internal layout that fits standard battery modules and electronics (USB-C/Lightning outputs, safety circuitry, ventilation). De...

I’m rolling out a new generation of eco-friendly EV charging stations and need a full-featured management platform built from scratch. Here’s what the first release must do for me: • Energy usage monitoring for every session and charger • Remote control—start, stop, reboot and schedule charging • Secure user authentication Role-based access is essential. Administrators configure the network and view global analytics, end-users simply authenticate and charge, while maintenance staff receive real-time diagnostics and alerts. The platform must also talk seamlessly to our existing energy-management system through open, well-documented APIs so we can optimise load and incorporate on-site renewables. REST/JSON is preferred, but I’m open to ...

...ground station that plugs into (or comes pre-paired with) a common VR headset—preferably something open like an Oculus/Meta or DJI Goggles, but I’m flexible if another model makes integration cleaner. Control will be through a traditional RC transmitter; please size the receiver and firmware accordingly and map failsafes for loss of signal or low battery. Because I’ll be flying beyond line-of-sight at times, rock-solid telemetry matters. GPS lock, battery health read-outs, and a home-return switch must be baked in. If you already have experience with Betaflight, ArduPilot, or INAV, let me know which you’d recommend for this range and why. Acceptance criteria • Prototype air-tested at 1 km minimum, documented video proof of stable feed &bu...

I’m building an interactive robot around a micro:bit and I need a mechanical / 3D design engineer to turn my concept into a production-ready CAD package for FDM printing. The model must combine rigid PLA/ABS shells with TPU joints or pads, include neat cable channels, screw posts, snap-fit clips for fast assembly, and a hidden battery bay. Please integrate proper seats for the micro:bit + expansion board, several micro-servos, an ultrasonic sensor and a few RGB LEDs, while leaving a clear window so the micro:bit LED matrix remains visible. The motion system should feel smooth and reliable rather than toy-like; I’m happy to discuss linkage layouts or gear trains that suit FDM tolerances. Good DfAM practice is a must so the parts print without excessive supports on a st...

I'm looking for a device that can measure weight in pounds and operate underwater. It's essential that this device is powered by long-lasting batteries. Key Require...weight in pounds and operate underwater. It's essential that this device is powered by long-lasting batteries. Key Requirements: - The device must be waterproof and able to function accurately while submerged. - It should measure weight specifically in pounds. - Long-lasting battery life is crucial to ensure extended use without frequent recharging or replacement. Ideal Skills and Experience: - Experience in designing waterproof electronic devices. - Knowledge in weight measurement technology. - Expertise in battery technology for prolonged usage. Please provide examples of previous work and r...

I need an injection mold design for a kids' battery-powered ride-on bike. The mold will be used to create the full bike, including all necessary components. Requirements: - Design an injection mold for a complete battery-operated kids' bike. - Use polypropylene as the molding material. Ideal Skills and Experience: - Expertise in mold design, especially for complex assemblies like bicycles. - Experience working with polypropylene. - Knowledge of safety and durability requirements for children's toys.

...beginner-level enthusiasts. - Simplifying technical explanations to be accessible for Year 10 students. - Updating the Bill of Materials (BOM) with precise detail. - Enhancing wiring diagrams with clear labels suited for basic soldering practices. - Including step-by-step visuals or illustrations where necessary. - Providing essential safety instructions, particularly related to soldering and battery handling. - Creating a troubleshooting section for common issues encountered during assembly. Ideal Candidate: - Significant experience in electronics, STEM education-related writing, or DIY projects. - Proficient in creating visually appealing diagrams using tools like Inkscape, Illustrator, or Canva. - Familiarity with soldering techniques and audio electronics is highly desirable...

I already have three published papers on electric-vehicle charging and a university-approved thesis template. Your mission is to mould those papers into one seamless Ph.D. dissertation, written and typeset entirely in LaTeX on Overleaf. You will receive: • the official structure document my faculty expects • the full set of formatting and submission guidelines • the three peer-reviewed articles (source files and PDFs) What I need from you is a logically connected thesis that: 1. Re-orders, edits, and links the existing papers into unified chapters (intro, literature review, methods, results, discussion, conclusion) while preserving each study’s integrity. 2. Adds any bridging text, contextual background, extended literature coverage, and future-work ...

Custom TWS Earbuds Prototype - Earin M-2 Miniaturization** UNIVERSITY PROJECT: Redesign Earin M-2 earbuds SMALLER to reduce ear protrusion. CURRENT SPECS: 24×15×15mm shell, 4g each, 60mAh battery, 4hr playback, BA driver, NFMI sync, touch controls TARGET SPECS: <20×13×12mm shell (33% smaller volume) • Same features or close equivalents • 1-2 FULLY WORKING prototype pairs DELIVERABLES REQUIRED: 1. New shell design (3D printed or molded) 2. Custom PCB layout for reduced volume 3. Component sourcing (mini BA driver, BT/NFMI, 40-50mAh battery) 4. Full assembly + functional testing 5. Audio test + TWS pairing validation I HAVE: • Complete Earin M-2 teardown photos • Exact measurements + target dimensions • Protrusion prob...

I am developing a compact handheld consumer device prototype that requires integration of a rechargeable battery and small electronic module inside a custom 3D printed enclosure. I am looking for an experienced embedded hardware / electronics engineer who can help design and prototype a small, safe, battery-powered system suitable for a handheld form factor. The device will require: • Integration of a rechargeable lithium battery (3.7V or similar) • Safe charging system (USB-C or similar) • Small heating or vapor-generating element OR similar compact load component • Efficient power management and protection circuitry • Compact PCB design suitable for fitting inside a slim enclosure • Guidance on component selection and prot...

...(Jetpack Compose for UI). Camera API: CameraX. On-Device AI: ML Kit or TensorFlow Lite. Architecture: Clean Architecture / MVVM (Modular approach is mandatory). Networking: Retrofit/OkHttp + Real-time connectivity monitoring. Deliverables: Fully documented, modular source code. Functional APK/AAB for internal testing. Setup for Google Play Console Internal Testing Track. Performance report (Battery impact and CPU/Thermal usage). Application Requirements (Filter Questions): To be considered, please answer the following technical questions in your proposal: do you plan to handle the synchronization between the camera buffer and the API call to prevent memory leaks? strategy will you use to ensure the Foreground Service stays alive on "aggressive" OEMs like Hu...

...Clear System Mode Indicator (Required) There must be a highly visible, always-on indicator showing the current system mode: Log Settings Arm Disarm Home Arm SOS Notes: Color choices are free as long as the mode is instantly recognizable The indicator must be readable at a glance and feel premium B) Small System Icons (Required) Include these always visible system icons: Battery icon WiFi icon Charging icon (shows charging or not) LTE signal icon (classic mobile signal bars) C) Top-left mini elements (Required) In the top-left corner, include: A small mini clock A small mini status icon (simple system-style icon) 7) Logo Requirement (Contest Phase Placeholder) A logo must be integrated into the design. For contest entries: Use a placeholder horizontal logo Five...

_Project Title:_ Nickel Mine and Solar Power Plant (PLTS) Development _Objectives:_ - Increase nickel production to meet global demand - Develop renewable energy by building a 100 MW Solar Power Plant (PLTS) - Boost national revenue through nickel and electricity exports _Targets:_ - Nickel production: 100,000 tons/year - PLTS capacity: 100 MW - Target markets: Steel industry, battery manufacturers, and electricity sector _Steps:_ 1. _Exploration and Evaluation_: Conduct geological surveys and assess nickel reserves (6 months, Rp10 billion) 2. _Infrastructure Development_: Build roads, processing facilities, and power grid connections (12 months, Rp50 billion) 3. _PLTS Construction_: Build a 100 MW Solar Power Plant (18 months, Rp150 billion) 4. _Production Operations_: Start nic...

...direction must be firmly professional, clean, and modern, similar to apps like Trackimo, Life360, or Find My. User-friendly navigation and clear communication of features are top priority. The screens must quickly communicate key features such as: • Real-time GPS tracking • Route history and travel playback • Alerts and smart notifications • Geofences and safe zones • SOS emergency alerts • Device battery status I will supply: • App logo • Brand colors • Screenshots from the app • Text content From you I expect high-fidelity layouts in illustrator or Photoshop . Deliverables: 4–6 swipeable onboarding screens 2–3 in-app feature spotlight pop-ups or tooltips Source file with organized layers, styles, and compon...

...garage system with: 3D car showcase Cinematic lighting Smooth camera controls Audio & Feedback Realistic, dynamic engine sounds Adaptive background music (electronic / cinematic) Premium UI sound effects Audio feedback synced with speed, nitro, and collisions ⚙ Performance & Optimization Mobile performance optimization (60 FPS target where possible) LOD systems, draw-call optimization Battery & thermal-aware design Clean, scalable, well-documented code Expectations from Freelancer / Studio Proven experience with racing or vehicle-based games Strong portfolio of 3D mobile games Ability to suggest modern features and improvements Professional workflow (version control, milestones) Interest in long-term collaboration for updates and expansion Timeli...

...2D drawings for every component, delivered in native CAD (SolidWorks, CATIA, NX, or comparable) plus neutral formats such as STEP/IGES. • An itemised Bill of Materials that ties every drawing to part numbers, materials, and basic manufacturing notes. • Assembly files that show how subsystems fit together, with clear fastening and tolerance information. • Data organised so downstream teams—battery, drivetrain, suppliers—can reference or adapt it without re-work. I already have high-level targets for size and performance; you will translate these into surfaces, hard points, and manufacturable geometry. If you bring experience with automotive standards, lightweight materials, or EV-specific packaging, please highlight it in your proposal and include...

Required Functions – Custom Control PCB for Sweeper Machine ...Jet Pump Control – 1 No 12. Camera Power & Interface Support – 4 Nos 2 nos AI camera to detect garbage, roads broken. And send report to cloud server. 13. Touch Display Interface – 10-inch Capacitive Touch Display 14. Emergency Stop Input – 1 No 15. Limit Switch Inputs – Multiple (Brush, Tank, Gate positions) 16. Pressure Sensor Inputs – Suction & Hydraulic (Analog) 17. Battery Voltage Monitoring – 1 No 18. Battery Current Monitoring – 1 No 19. Fault Indication Output – Buzzer + Status LEDs 20. System Power Management – 24V / 12V / 5V DC-DC Regulation 23. Service / Diagnostic Port – USB / UART 24. Firmware Update Suppor...

...Google Drive, WeTransfer, or similar within 10 days Bring your preferred DSLR, mirrorless, or pro camcorder, plus a small tripod for the dj booth. If this fits your style, let me know your camera model, lens choices, and any past nightclub or live-set work you’ve shot so I can get a feel for your look. I also have a Nikon Z7 that records 4k, can bring it to help with 2nd angles and changes of battery...

...robust enough for daily public use at low speed. Safety is paramount. The layout must incorporate a positive-acting emergency shut-off system, non-slip deck surfaces, a secure battery enclosure that keeps water and curious fingers out, and stability/flotation adequate for either one adult or an adult with a small child. Steering will be by wheel, and I’d like a supportive bucket seat placed to keep the centre of gravity low. Because the drawings will go straight to a surveyor and insurer here in Western Australia, I need a fully detailed 3D model that shows every mechanical part—jet unit, steering linkages, battery mounts, rudder nozzle, intake screen, wiring runs, even drain bungs—so nothing is left open to interpretation. Deliverables required on sig...

I need a detailed electrical plan for installing an EV charger in the garage of a new residential home, as required by council regulations. The home has a three-phase electrical supply. Requirements: - Compliance with Woollahra council regulations For condition 14 (Item 37) that requests “electrical plans of all off street parking demonstrating capacity for Level 2 (single phase, 7kw power) charging point” - Detailed schematics for three-phase supply - Specifications for EV charger installation in garage Ideal Skills and Experience: - Experience with residential electrical planning - Knowledge of council requirements for EV charger installations - Familiarity with three-phase electrical systems

...selection, moves through PCB layout, and finishes with ready-to-manufacture Gerbers, a complete BOM, and clear test guidelines. The radio link is the heart of the design, so careful RF layout, antenna matching, and regulatory-compliant power levels are essential. Bluetooth LE is my preferred protocol, though I am open to Wi-Fi or other 2.4 GHz solutions if you can demonstrate lower cost or better battery life without sacrificing performance. Please plan on: • Delivering editable design files in Altium, KiCad, or Eagle, plus PDFs for quick review • Calling out any critical components with long lead times and proposing substitutes where sensible • Providing a brief validation report that confirms range, data throughput, and current consumption match the d...

Please modify as requested and I will update you if any changes needed after. Provide step file when done

I'm seeking an experienced designer to create a 12V electrical panel for installation on the interior of a canopy. The panel will power lights, a fridge, and charging ports. Key requirements: - Incorporate a fuse box and circuit breakers for protection - Design must fit securely and function efficiently within the canopy interior Ideal skills and experience: - Expertise in 12V electrical systems - Experience with designing electrical panels - Knowledge of safety standards and protection mechanisms

...own 5-inch display (connected via HDMI) and is connected to a battery BMS via UART and controls the main ON/OFF switching of the exoskeleton system driven via a 48V 10A relay. The Raspberry Pi also controls the operation of a 5V air-pump via a relay able to deliver 1.5A. 1. Graphical user interface (GUI) developed for the STM32 to drive the ST7789 display. The detailed requirements for this GUI are presented in Figure 3. 2. GUI developed for the Raspberry Pi display. The detailed requirements for this GUI are the same as for STM32. 3. Software for the Right-leg STM32 microcontroller 4. Software for the Raspberry Pi 5. Software for the Left-leg STM32 microcontroller Top part of screen: Waist status showing ON/OFF, battery and waist airbags status. Green OK, red fault...

...that asks the Michigan family-court judge to strike my former lawyer’s charging lien in our ongoing divorce action. The basis is legal malpractice—specifically, the attorney neglected key facts and deadlines, causing measurable harm. I also intend to reference fraud and breach-of-contract allegations, but the centerpiece argument is malpractice through neglect of important case details. Please draft the motion in Microsoft Word, structured for a Michigan circuit-court family docket. It must: Clue the points that are uploaded onto the grievance. I am filing with the attorney Grievance Commission to persuade the judge please see attached. • Cite the relevant Michigan Court Rules and supportive case law on attorney charging liens and their dissolution. &...

...Bluetooth, and refreshes quickly enough to feel truly live. • When Bluetooth isn’t possible or range is lost, a secondary short-range radio link should take over so position updates continue (I’m open to the specific protocol you recommend). • Everything must be optimized for battery life, ruggedized for rain and mud, and small enough to be fit into a broadhead style design for an arrow and light enough to not majorly affect flight path. I would like it rechargeable as well, and a way to turn it on and off to preserve battery life. I’ll lean on your expertise to choose the right chip set, antenna layout, power-saving firmware techniques, and mobile-side integration. A concise mobile demo app (Android or iOS) that plots the device on a ma...

...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 commands from mobile app (play audio / change mode) Battery-powered (AA/AAA, no lithium battery) Speaker + amplifier On/Off switch Deliverables 1 working electronics ...

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...diverge from Apple’s exact geometry while still feeling “AirPods-inspired.” Core structure • Two-piece construction (base + lid) with a smooth hinge and just enough extra thickness to hold the electronics yet still slip into a jeans pocket. • Interior cavities for a pre-assembled UV-C module, a compact battery pack, and a momentary push button. Please ensure the lid seals completely to prevent UV leakage; magnetic snaps are welcome if they simplify the closure. • A discrete, built-in battery indicator is required—an LED window or light pipe is fine as long as it’s easy to read without opening the lid. • Optional foam or rubber inserts that cradle the AirPods and stop rattling. • External surface should be re...

I'm seeking a skilled technician to replace a UPS with a new APC UPS in an office network environment. Currently, we're facing battery failure issues. Key Tasks: - Assess the existing UPS setup - Replace the faulty battery - Test and ensure proper functionality post-repair Ideal Skills and Experience: - Experience with APC UPS systems - Background in office network environments - Strong troubleshooting skills

I need an Android-only time management app whose core purpose...notification handling that respects Doze/idle modes • Simple local data storage (Room, Realm, or similar) for tasks and reminder metadata • Basic settings screen to let users fine-tune reminder intervals and sounds Acceptance criteria 1. I can create, edit, and delete a task, assign a date/time, and receive at least one alert exactly at the set moment. 2. No missed notifications during typical battery-saving scenarios on Android 13+. 3. Codebase builds with a single Gradle command and passes lint checks. If you have previous work that highlights smooth notification logic or sleek material-design layouts, share a link or screen-cap so I can gauge fit quickly. Let’s get this built and in pe...

I want to build a compact, two-way Bluetooth audio interface for a HAM radio. The core goal is a 2-way bridge between the radio and a realtime camera running on a linux board via buletooth. Digital or analog volume adjustment is needed Device must be battery and/or 12V DC operated, with DC12V charging battery if present What I need: • Full-duplex transmit and receive so both the radio’s microphone and speaker lines travel over Bluetooth. • A design that plays nicely with typical HAM radio mic/headphone levels. • Optional Radio PTT Sense to mute microphone input if PTT button not pressed • Stable pairing, clear voice quality, and minimal latency. Please provide: 1. Schematic and bill of materials (module choice is up to you; CSR, ESP32, or ...