Battery charging jobs

...Earthing, bonding systems and required power quality protection and monitoring, including solar energy monitoring. • Lighting design (internal, external, carpark, facade) including controls • Emergency and exit lighting integrated with fire alarm systems • Communications & security infrastructure (comms rooms, cabling, CCTV, access control) • Solar PV system design and integration • Provision for EV charging and future energy systems • Backup power systems (UPS / generator, ATS, essential services) • Fire detection & alarm systems, smoke control systems including carpark exhaust and stairs • Deliver design and calculations to comply with NCC and Australian Standards Please Include your - qualifications and experience especially ...

...Must include organized internal layout for: 1. Raspberry Pi Zero 2 W - Dedicated mounting area (right side) - 4 standoffs (M2 compatible) - Clearance under board: 2mm minimum 2. Battery Compartment - Left side placement - Space: 60mm x 30mm x 6mm - Include small retention lip or support 3. Speaker Housing - Bottom center placement - 30–40mm diameter recess - 3–5mm depth - Include front or rear sound holes --- AIRFLOW / COOLING - Top vents: - 8–12 holes - 3mm diameter - Positioned along top arc (~120°) - Bottom vents: - 6–8 holes - 3mm diameter - Must allow airflow path across main board --- CHARGING PORT - USB-C cutout - Size: ~10mm x 5mm - Placement: top edge or accessible side --- ASSEMBLY REQUIREMENTS - Two-part enclo...

...later be scaled to production. System Components: 1. Wearable Button Unit * Small, lightweight device clipped to the player's shirt * Single push button input * Bluetooth Low Energy (BLE) communication * Rechargeable battery (Li-Po) * USB charging circuit * RGB LED status indicator: * Green: Device ON * Flashing Red: Charging * Green (steady): Fully charged * Low-cost design is important 2. Speaker Unit * Receives signals from the button via Bluetooth * Plays pre-recorded audio announcing the score * Rechargeable battery-powered * Designed for outdoor sports court use Key Functional Requirements: * Single press: Add point to player * Double press: Add point to opponent * Hold Press: Undo previous po...

I’m planning to release a focused utility app for Android and need a develope...the latest Android SDK, Kotlin or Java (your preference), and Google Play Store compliance requirements. Here’s what I’m expecting: • Fully functional APK that runs smoothly across current Android versions • Clean, well-commented source code pushed to a private Git repository • Brief setup / build documentation so I can reproduce the release on my end If you’ve shipped Android tools before—battery savers, file managers, system widgets, or similar—the project will feel familiar. Security, efficiency and a lightweight footprint are more important to me than flashy design. Let me know your preferred tech stack, any relevant apps you’ve published...

...With your personal Google account on an actual Android device (no emulators), you will install both builds from the Play Console’s internal test track, explore every feature, and capture anything that could trip the review team. Here is what I expect back: • A concise test report for each app covering core features, overall usability, and performance observations (loading speed, responsiveness, battery drain). • Clear, reproducible steps for any bug, crash, or graphical glitch, plus screenshots or short screen recordings when possible. • Confirmation that installation, first-run experience, login, and normal daily use feel smooth on your hardware. Everything should be completed within 48 hours of receiving the links so I can act on your feedback before...

I need a production-ready circuit and compact PCB built around the ESP32-C6 for an IoT device that must run efficiently on both a small solar panel and a rechargeable battery pack. Wi-Fi connectivity is mandatory, and every part of the design has to prioritise ultra-low power consumption so the unit can sit in deep-sleep most of the day yet still wake to trigger a miniature solenoid valve on command. Power architecture The board should accept solar input (≈5-6 V) and seamlessly switch to a lithium cell when sunlight is unavailable. Please integrate an MPPT-style charge controller, battery protection, and a low-loss power-path so the ESP32-C6 always sees a stable 3 V3 rail. Current draw during sleep should stay well under 30 µA. Control section • ESP32-C...

...Electronic & mechanical design – Schematic and PCB for the flight controller around the ESP32 – Parts list with readily available components – Simple, lightweight frame geometry (3-D printable or laser-cut) 2. Flight software – Sensor fusion (complementary or Kalman) to keep the drone steady – PID loops for auto-stabilization, tunable from the app – Failsafe logic and battery monitoring 3. Smartphone app – Touch-based joystick UI, real-time telemetry display – Easy binding procedure to the drone over BLE/Wi-Fi – Source code plus build instructions 4. Documentation – Assembly guide, wiring diagrams, and flashing steps – README that explains how to m...

I need an experienced electrician or fire-safety technician to re-install 3 of my home’s smoke detectors. They were malfunctioning so eventually we had enough and yanked them from the ceiling. The devices themselves aren’t showing low-battery lights, so I suspect wiring, dust, or sensor calibration could be at fault. We still have the detectors, so you'd just need to place them back on the celing and possibly rewire/fix the wiring, which I can send pictures of. Deliverable: fully functioning detectors that trigger only under real smoke conditions, plus a brief summary of what was done and any maintenance tips I should follow.

I need assistance filing a lawsuit against a business organization for assault, battery, injury, and harassment. I understand this case cannot be taken on contingency I am glad to pay. This man threatens to rape my wife and kill me. We are being terrorized. Please help me put up a legal shield to defend myself and recover lost money for doctors, pain and suffering. A housing dispute occurred with Landlord over repairs after 16 months of asking, police respond to arguments several times. Fire and EMT as well, about 6 incidents. Police refuse to trespass, he doesn't live here and has no legitimate reason to be here but they just won't get involved no matter what he says or does. After Police leave he stands behind door of private entrance and says "Robbbeeert, whe...

...profile-based social layer where people can discover nearby users. For the discovery experience I only need a clean, fast List view—no map at this stage. The essentials I need developed: • Responsive PWA scaffold (React, Vue, Svelte Kit or similar—open to your recommendation) • Secure user authentication and editable profile pages • Background location capture that respects permissions and battery constraints • Real-time “Nearby Users” endpoint plus front-end list that refreshes smoothly as people move around • Basic settings screen so users can toggle visibility or pause location sharing Acceptance criteria 1. App installs to home screen and passes Lighthouse PWA checks. 2. User can sign up, edit a profile phot...

All of the electronics for my IoT ear-piece are finished—the PCB, battery and micro-controller are already laid out. What I still need is a clean 3D model, built in Blender, that shows only the basic shape and size of the enclosure and the space the electronics will occupy. I don’t have any prior sketches or reference renders, so you’ll be starting from a blank canvas and can suggest a couple of ergonomic outer-shell ideas before we lock the form factor. I will supply the exact board outline, overall component heights and a few photos of the assembled prototype. Accuracy of the external dimensions and the internal keep-out volume is the only critical requirement at this stage; fine surface detailing and fastening features can wait for a later phase. Deliverables ...

...Keying) pulses reliably. The intended application is “Radio Frequency RF”, so there is no higher-level protocol to worry about; raw, clean carrier switching will do the job. Everything will be mounted and operated outdoors, so the design must tolerate ambient temperature swings, sunlight and occasional moisture without detuning or loss of sensitivity. Both TX and Rx are separate not transceiver and battery powered with minimum 2 days running time. What I am looking for • Circuit-level design of both the low-power transmitter and the super-regen/ super-het (designer’s choice) receiver, including complete schematics, PCB layouts and a concise Bill of Materials with part numbers that are actually in stock. • Component selection that keeps cost sensib...

...a 12S to 14S battery and an external 50.4 V 20 Ato 40 A DC/AC adapter, and high-current motor-driver channels for the four legs. Space is limited to roughly 200 mm × 160 mm, so component placement and thermal handling matter. Battery charging, voltage and current sensing, and protected power rails for the logic section should be built in. I’ll supply Reference schematics the moment we begin. Deliverables • Annotated schematic in Altium, KiCad, or Eagle • Complete, fabrication-ready Gerber/NC drill set plus pick-and-place files • Clean BOM with manufacturer part numbers and at least one in-stock distributor per item • Brief bring-up guide and test points called out on the silkscreen Acceptance Criteria The board must bo...

I need CAD designs for a 2-part golf putter smart cap prototype. The design should be in plastic and include: - A small threaded insert that screws into the rubber grip top (5mm hole) - A round smart cap (40mm) that bayonet twist-locks in The smart cap must accommodate a screen, PCB, IMU, and LiPo battery. I will provide specific brands/models for the PCB, IMU, and LiPo. Deliverables: - STL files - STEP files - Section/exploded drawings Ideal Skills and Experience: - Proficiency in CAD software - Experience with electronic enclosures and integration - Knowledge of materials and prototyping processes What needs to be designed I need a 2-part system: 1) Threaded insert (stays in the putter grip) A small insert that screws into the rubber top of the putter grip and stays there....

I want a low price charging video editor who can edit instagram reels for me with my photos & video clips

I'm converting my food truck's power system from acid lead batteries to lit...converter and ensure the wiring is suitable for the new power source. Key tasks: - Install a converter that has a power of 5kW, suitable for a 60V battery input, and can charge the batteries with 240V mains voltage - Partially rewire to accommodate the new system (assume thicker wires now needed) This is for an electric food truck. Simple wiring is already in place & visible. Batteries are being built and installed by experts i SE5, London. Can be flexible on timings. as I need to source the converter. Ideal skills and experience: - Electrical engineering background - Experience with food truck or vehicle power systems - Knowledge of lithium battery systems - Proficient in wiring...

Project Title: ESP32-Based Smart Healthcare Monitoring Device PCB I need a custom PCB design for a portable patient health monitoring system. Main Controller: * ESP32 Dev Module (30-pin) Power System: * 18650 Li-ion battery * TP4056 charging module with protection * MT3608 boost converter (output 5V) * On/off power switch * USB charging port (Type-C or Micro-USB) * Proper power routing for stable 5V and 3.3V Sensors: * MAX30102 (Heart Rate + SpO2) using I2C * SDA → GPIO21 * SCL → GPIO22 * DS18B20 Temperature Sensor * DATA → GPIO4 with 4.7kΩ pull-up resistor Display: * 2.8” or 3.5” TFT Touch Display (ILI9341 + XPT2046) * SPI pins: * MOSI → GPIO23 * MISO → GPIO19 * SCK → GPIO18 * Control pins: * T...

...content-creation workloads, specifically video editing with Cupcut. Storage must be at least 1 TB (SSD preferred), and overall performance should keep 4K timelines smooth without thermal throttling during longer renders. Here’s what I need from you: • A concise comparison of 3-5 currently available models that meet or exceed the above storage requirement, noting CPU, GPU, RAM, screen size/type, battery life, port selection, and upgradability. • A brief explanation of why each machine works well for Cupcut video editing, including any known compatibility or codec performance considerations. • Purchase links (regional availability is fine) and the latest pricing you can verify. • Your personal top pick with a one-paragraph rationale. I already kno...

...everyone inside a geographic zone they draw on the map. The moment a user enters, exits, or simply stands within that zone, the message should arrive instantly; anyone outside the boundary stays silent. Zones are created on-the-fly by the user—think free-form circles, polygons, or any latitude/longitude shape they need—so the system has to watch position changes continuously without draining the battery. The app must run natively on both iOS and Android and feel identical on each platform. I’m comfortable if you work in React Native, Flutter, or separate native stacks, as long as the final builds pass App Store and Google Play review. Behind the scenes a lightweight backend should store active zones, push new messages through APNs/FCM in under two seconds, and ...

...VICTRON ENERGY Components. The system will primarily integrate solar power with an LP/gas generator, and potentially incorporate hydropower. Key Tasks: - Validate and refine design for efficiency - Specify wire gauging - Ensure cohesive system design- Review and validate system concepts - Perform load analysis and system modeling - Design hybrid power system architecture - Size and integrate battery storage systems - Integrate generators with solar and storage - Develop electrical schematics and diagrams - Ensure compliance with U.S. electrical codes and interconnection requirements - Prepare final engineering documentation Deliverables: - System optimization recommendations - Basic engineering plans and specifications Ideal candidates should have: - Strong background in el...

I need a clean, lightweight 3D model for a tiny-whoop style Li-Po battery holder that also keeps the accompanying straps neatly in place. I already own a very similar holder, so you’ll have access to photos, measurements, and any reference files you need. From those, you’ll recreate—or improve—the design so it is ready for me to slice and print. I’m still debating whether to run it in PLA, ABS, or PETG, so please build the part with filament tolerances in mind and feel free to recommend wall thicknesses or subtle tweaks that suit the material you think works best for durability and weight. Deliverables: • Finished, watertight model in STL (STEP or Fusion 360 file appreciated for future edits) • Any supporting notes on print orientation, in...

PCB Design – STM32 I need an experienced PCB designer to create a 4-layer industrial PCB Requirements: * MCU: STM32 * 4G Module: SIM7600G (GPS + LTE) * Power: 12V → 5V (LM2596), 3.3V (AMS1117), battery backup * Inputs: 3× CT + 3× PT (with protection & filtering) * Output: Relay-based MCCB trip (optocoupler isolated) * Extra: MPU6050 (I2C), LEDs, buttons, UART debug Key Design Points: * 4-layer PCB (GND + power planes) * Proper HV/LV isolation (8mm clearance) * EMI/EMC-friendly layout * RF layout for 4G antenna (50Ω) Deliverables: * PCB design files (KiCad/Altium/EasyEDA) * Gerber + BOM + Pick & Place * Ready for manufacturing Looking for: * Experience in industrial PCB design * Knowledge of power + RF + protection circuits Apply with: ...

...easy and operation reliable. I am not tied to any particular software, but models produced in SolidWorks, Fusion 360 or a comparable mainstream CAD package will let me iterate with my fabrication partners. Deliverables • High-level sketches or mood boards that show the overall look and proportions • A detailed 3D CAD assembly with major subsystems (cutting deck, powertrain, sensor suite, battery compartment) called out • Basic kinematic or clearance study proving the deck can cover uneven ground without scalping • Obstacle-detection concept: suggested sensor types and mounting positions with wiring paths indicated • Exploded view plus PDF drawings suitable for early cost estimates Acceptance criteria • Cutting width and chassis footpr...

...with vibration sensors for forced-entry or impact events. • Electronics & firmware: select a low-power MCU, integrate the two sensor types, and push data over cellular or Wi-Fi to a secure cloud endpoint. • Mobile app: build one code-base (Flutter, React Native, or similar) so I receive real-time alerts on both iOS and Android. A simple dashboard showing status, last event time-stamp, and battery/connection health is enough for this stage. Scope of work 1. Design the hardware schematic, BOM, and enclosure suggestion suitable for outdoor, trailer-mounted use. 2. Develop and flash the firmware with reliable debounce/noise filtering so false positives stay under control. 3. Spin up a lightweight backend (Firebase, AWS IoT, or your preferred stack) to route eve...

...tech feel) * Not flashy or cluttered * Strong typography and visual hierarchy We will provide: * Logo * Machine mockups * Current rack card (for reference) * Website for inspiration --- RACK CARD COPY FRONT: * PHONE AT 5%? * Don’t let your customers leave early. * Scan. Grab. Stay longer. --- BACK: * Why venues choose Pollyn * Keeps guests in your venue longer * Seamless, self-service charging * No staff involvement required * Modern experience customers expect * How it works: Scan → Grab → Return * Bring Pollyn to your venue * Phone: [we will provide] * Email: [we will provide] * QR Code (we will provide link) * Small footer: Partnership opportunities available --- BUSINESS CARD COPY FRONT: * Pollyn (logo) * [Your Name] * Founder / Part...

I need a complete CFD study that shows how an air-cooled lithium-ion battery pack behaves under load. Your simulation must cover three linked aspects—heat dissipation, temperature distribution throughout the cells and channels, and the resulting fluid-flow characteristics inside the cooling passages. Air will be the only working fluid, so model its thermo-physical properties accurately across the expected temperature range. Please apply the following boundary conditions exactly as stated: • constant temperature at selected casing surfaces (representing contact with a chilled plate) • constant heat flux from each cell core • adiabatic walls on all remaining faces I am interested in clear, actionable results: temperature contours on every cell, velocit...

...everything appears clean and firmly seated. Unfortunately, both the engine and habitation batteries have now been drained to zero, so I can’t even get a flicker from the system. I need someone who knows the Swift Sargent (or similar) control modules inside out to: • run proper bench and in-vehicle tests to confirm whether the control unit itself is at fault or whether a hidden wiring or charging issue is the real culprit, • bring the batteries back to a safe state (or advise on replacement if they’re beyond recovery), and • leave me with a fully functioning 12 V/230 V setup and written notes of what was fixed or replaced. Please let me know your availability to come to the vehicle (I’m in [insert location]) and any specialist diagno...

I need my current water-level indicator rebuilt from the ground up so it does far more than just show a level. The new design must constantly monitor the tank, trigger automatic fill/stop routines, and run solely from a compact battery pack. I am open to whichever display technology you feel best suits the build—I mainly care that the read-out is clear, low-power, and robust enough for daily use. Scope of work From concept sketches to a working prototype, you will rethink the sensing method, control logic, power management, and housing. That includes choosing the ideal microcontroller, designing the PCB, writing the firmware, and packaging everything in an enclosure that can handle occasional splashes or condensation. The finished unit should be maintenance-friendly and easy ...

U.S. Automotive Policy & Market Access Research 1. Conduct in-depth tracking and analysis of the implementation and revision trends of the Foreign Entity of Concern (FEOC) rules under the IRA, anticipate the "de-risking" pressures they impose on overseas battery supply chains, and simulate the impact of potential future changes to tax credit policies on the cost competitiveness of overseas electric vehicle manufacturers. 2. Monitor the potential expansion of Section 232 of the Trade Expansion Act of 1962 into the automotive sector, assessing the risk of escalating tariff barriers under the guise of "national security." 3. Analyze possible adjustments to the rules of origin under the US-Mexico-Canada Agreement (USMCA), forecasting compliance risks associated ...

My son is serving a 17-year sentence after accepting a plea that lists both DUI manslaughter and DUI homicide for the same fatality. I want to challenge the duplicative charging in court so we can move toward a reduced sentence. All discovery, the plea-hearing transcript, police reports, toxicology, and sentencing paperwork are ready to share in searchable PDF. What I need next is a DUI-focused post-conviction strategy that argues double-jeopardy principles, shows how the two counts punish the same act, and sets out the most persuasive case law in our jurisdiction. Here is how I see the work unfolding: • Deep review of the full case file and plea colloquy • Written legal analysis identifying the best avenue—most likely a Rule 3.850 / 3.800 motion or other sta...

...placing charging devices/power-bank units on tables or in specific venue locations. End users can access the service, receive an unlock code, use the battery for a selected rental period, and the platform must track usage, merchants, devices, payments, rental sessions, and revenue distribution. This is not a simple website. We need a real web-based operational platform with admin logic, merchant logic, device assignment, unlock code flow, reporting, and scalable structure for future integrations. The product must be built as a working SaaS-style web platform, with clean architecture and clear separation between super admin, merchant admin, venue management, and end-user rental flow. --- Main Goal Build a web platform that allows us to: manage merchants and venues m...

...beginner SolidWorks/Fusion 360 designer can understand and deliver exactly what your CNC guy needs. Project Title:
Create precise 3D CAD model + STEP file for Aluminium Liquid Cooling Plate (V1.1) – CNC ready for prototype Project Description & Purpose:
I need a professional 3D model and STEP file (plus basic 2D PDF drawing) for a liquid cooling cold plate prototype. This is for showing to EV/battery startups in India. The design must be fully machinable on a standard 3-axis CNC mill using Aluminium 6061-T6. Overall Requirements: • Software: SolidWorks preferred (or Fusion 360 / Creo / CATIA – any that exports clean STEP). • Deliverables: 1 Full editable 3D assembly (base + cover) – STEP format (AP214 or AP242) 2 Separate parts: Base p...

I have a rea...I expect clear, pin-referenced comments on the schematic plus a concise report outlining: • any mismatched voltage rails or trace width issues that could limit current • potential inrush or stability concerns tied to the chosen power sources • capacitors whose stated capacitance or voltage rating doesn’t align with the circuit requirements, or whose placement may compromise performance - battery is CR2032 If something looks off, suggest concrete fixes—part number changes, footprint swaps, or topology tweaks—and briefly explain the reasoning so I can implement them quickly. Deliver your annotated schematic (PDF or KiCad markup) and the summary report. I’d like to wrap the review within a week, but I’m flexible if you...

I need a focused Google Search campaign that drives qualified solar-battery enquiries from Australian residential homeowners straight to my sales team. The goal is pure lead generation, so every element—from keyword selection through ad copy and extensions—must attract household decision-makers actively looking to add storage to their existing or new rooftop systems. Here is what I’m expecting: • Research and isolate high-intent, Australia-specific keywords around “solar battery”, “home battery storage”, “Powerwall alternatives”, etc. • Write compelling, policy-compliant ad copy that highlights rebates, savings and energy independence. • Build the campaign in Google Ads: ad groups, responsive s...

...before printing MECHANISMS: Simple servo-driven hinge systems for: • Falcon doors • Bonnet • Boot • Wiper (Only RC-level movement — nothing overly complex.) ELECTRONICS (FYI — Not Your Job): Just leave space for: • PCB (ESP32, multiplexer, PCA9685, DFPlayer, PAM amp, etc.) • Servos • 3 mini speakers (2 in falcon doors, 1 in radiator mock) • ESC • Battery percentage indicator • 6 ToF sensors • LEDs / LED strips • Battery + BMS (We can discuss wiring/PCB as a separate job.) WHO WE WANT: • Strong CAD + 3D modeling skills • Automotive familiarity preferred • Understanding of 3D printing constraints • Ability to design simple, functional servo linkages NOTE: This is ...

...to users. Core user flow A customer opens the app, browses our accessory catalogue, checks out with their preferred payment method, then watches the courier’s live location as the order makes its way to their door. After delivery, the customer can rate both the product and the service. Essential features to include • Real-time order tracking that updates every few seconds without draining battery. • In-app payments supporting cards, Apple Pay, Google Pay, and any standard local gateways. • Post-delivery customer reviews and star ratings that feed into an overall seller score. Delivery logistics All fulfilment will be handled by my own in-house courier team, so the system must: • Automatically assign new orders to available drivers based ...

...effects, groups, scenes Fans Speed steps, oscillation toggle, preset modes, direction control Sensors Temperature, humidity, motion, door/window, air quality (PM2.5/CO2), power/energy, battery, water leak, light level, pressure Climate Thermostat, HVAC modes, target temp, fan mode, humidity control Covers Blinds, garage doors, position %, open/close/stop states Switches/Plugs On/off, power monitoring, usage stats, reboot simulation Media/Cameras Mock media player (play/pause/track), static/looping camera feed placeholder Automations Realistic state simulation scripts (e.g., temp fluctuation, motion triggers, battery drain) All entities must include proper device_class, unit_of_measurement, icon, and state formatting Include a mock device. yaml package with clear naming con...

...handles background processing and sensor-based event detection. Scope of work: 1. Build a native Android foreground service that: - Runs reliably in the background - Is not killed by the OS (handle Doze mode, battery optimization) 2. Detect the following signals: - Screen ON/OFF state - Charging state (plug/unplug) - Basic motion detection using accelerometer (low-frequency sampling) - Optional: ambient light sensor (if available) 3. Implement logic to: - Track inactivity (e.g., screen off + no interaction) - Combine signals and trigger an event when conditions are met - Ensure low battery usage (no continuous high-frequency polling) 4. Alarm functionality: - Schedule exact alarms using AlarmManager - Ensure alarms work even in Doze mode 5. React Native bridge...

Description: We are looking for an experienced web designer/developer to create a modern, professional website for our company operating in the fields of: • Solar Energy • Energy Storage Systems (BESS) • Battery Manufacturing & Technology Transfer • EPC & Industrial Projects Our company is based in China with international operations, and we require a website that reflects a strong industrial and global presence. ⸻ Scope of Work: • Design and develop a clean, modern, and high-end website • Around 5–8 pages, including: • Home • About Us • Services • Projects / Partners • Contact • Responsive design (mobile + desktop) • Fast loading and optimized performance • Professional UI/UX (not ...

...Android version. ​Key Deliverables & Features ​Core Mechanics: Smooth, bug-free, and highly responsive game mechanics. ​Multiplayer Networking: Robust multiplayer integration, specifically including team-based functionality and matchmaking. ​UI/UX & Design: A clean, user-friendly interface with normal-quality graphics and simple, crisp animations. We are prioritizing performance, accessibility, and battery efficiency over heavy, resource-intensive graphics. ​Monetization: Seamless, non-intrusive integration of both ad networks and In-App Purchases (IAP). ​The Ideal Candidate Will Have: ​A proven track record in mobile game development, preferably using Unity or similar industry-standard game engines. ​A strong portfolio featuring published card, board, or turn-based multi...

I’m building a simple, two-phase tool for my nonprofit’s battery-collection events and I need help finishing the first phase. What the first release must do • Let the user on either iOS or Android snap a photo or choose one from the gallery. • Send that image to a lightweight backend (Node.js or Python—your call) which forwards it to Anthropic’s Claude Vision endpoint. • Return a clear “lithium-ion” or “not lithium-ion” answer to the phone and display it cleanly. • Keep everything self-contained; I don’t want to wire into Zapier, , or other external integrations right now. Hosting & tech preferences I can supply Claude API keys and credentials for a free hosting tier on Render ...

...interrupt-driven readout required. BMI270 via I2C — step counting, wrist gesture, raw accel data for motion artifact correction MAX30205 via I2C — continuous temperature sampling All sensor data streamed raw over BLE — no onboard algorithm processing required at this stage BLE Requirements: BLE 5.0 advertising, bonding, custom GATT profile for raw sensor data streaming Standard services: Heart Rate, Battery, Device Information Nordic DFU bootloader integration for OTA firmware updates — this is mandatory Power Management: System off / low-power modes between events Target: <50µA average in idle, <10mA during active PPG sampling Power profile deliverable: measured or simulated average current in each state Deliverables: Well-commented source ...

...designer Current status: What we have : 1. RF module, list of components are mentioned below i. K-type female jacks ii. C- type charging port iii. Buttons on PCB (all buttons will not be used) 1. Power 2. Vox to PTT 3. PTT 4. Volume increase decrease - 2 buttons 5. Channel increase decrease - 2 buttons iv. Antenna connector v. Batter connector vi. Lights - 2 Led Requirement: End to end solution with regards to design. This will be design centric project with, where PCB will be designed first basis the product design. The product designer team will suggest the placement of components(buttons, battery connectors etc.) basis which we will make the PCB. suggestions for battery connector and placement are welcomed Brief : 1. Design principle :- a. Water/rain/splash pr...

...inside the same app) allows me to add or disable employees, update profile photos, adjust the geofence co-ordinates, and review or export daily logs. Selected notifications the app must send: • Reminders for attendance • Confirmation of successful check-in / check-out • Alerts for location errors Accuracy matters, so please rely on geofencing rather than continuous GPS tracking to conserve battery while still honouring the 5-metre limit. Face verification should run on-device for speed, but attendance data needs to sync to a small cloud backend whenever a connection is available. Deliverables: • Production-ready Android APK and clean, well-commented source code • Simple admin panel inside the same app and web console necessary • Brief setu...

...need an experienced Android developer—or an influencer who knows what resonates with this audience—to install the current build, explore every major flow, and deliver constructive, actionable feedback. Please focus on three things as you test: • User interface design: overall look, layout logic, and how polished everything feels on modern devices • App performance: startup time, memory use, battery impact, and any noticeable lags or crashes • End-to-end user experience: clarity of workflows, feature discoverability, and whether the app genuinely solves a professional’s day-to-day need Deliverables 1. A concise report (or video walkthrough) outlining what works, what doesn’t, and why 2. At least five prioritized suggestions that can r...

**Project Overview:** I have an existing working prototype PCB based on an ESP32-S3 system that drives LED lighting (WS2812) and uses battery power (LiPo with charging and boost circuitry). The current design functions but is not optimized for size, manufacturability, or enclosure integration. I am seeking an experienced **professional PCB design engineer (not beginner or hobbyist)** to redesign and miniaturize this system into a **production-ready, compact PCB** suitable for integration into a wearable armband enclosure. Preference will be given to engineers or firms located in the **United States** with demonstrated experience in **consumer electronics or wearable device design**. **Scope of Work:** 1. **PCB Miniaturization** * Reduce the current PCB footprint to th...

I need a reliable supplier who can deliver and fully install Voltas Split AC Inverter units in the 1.5 ton capacity. My requirement covers both the hardware and the service: • Brand & type: Voltas, Split AC Inverter • Capacity: 1.5 Ton per unit • Quantity: five complete indoor-outdoor sets, including outdoor stands where necessary • Scope: supply, installation, vacuuming, refrigerant charging, testing, and commissioning • Warranty: minimum one-year on each supplied unit Please keep the following in mind when preparing your offer. Delivery must take place within one to two days of my confirmed order, and installation should follow immediately so the system can be commissioned without delay. Break down your quote to show the unit price, install...

...comfortably sit in the 1 kW – 5 kW class and operate either indoors or outdoors. The unit must do more than simply sync with the mains: I want seamless battery-backup integration, high-efficiency power conversion, and a built-in remote-monitoring interface so performance data is always at my fingertips. Here’s what I need from you. First, a complete electrical design—topology selection, control strategy, MPPT stage, and grid-synchronisation logic—with efficiency clearly prioritised across the usable load range. Second an itemised BOM with part number using readily available components. Third, embedded firmware that governs battery charging/​discharging, anti-islanding protection, and real-time data streaming over Wi-Fi or Bluetooth to a simp...

Add a new requirement on the IoT datalogger Replace second ESP32 with STM32 ✅ Convert power source to battery ✅ Replace SIMCOM with BG95 ✅ Add SuperCap ✅ Replace Ethernet controller ✅ Add LEDs ✅ Add Reset button

...an experienced designer/fabricator to translate this idea into an actionable plan I can follow on my own. Here’s what I’m expecting: • A complete parts list (new or salvage) with current prices that keep the whole build near the $600 mark • Mechanical and electrical drawings (2D or simple 3D CAD) showing frame layout, battery placement, drivetrain, steering, brakes, and wiring • Step-by-step assembly guide, including any jigs or fixtures I’ll have to make • Charging circuit design suited to household power (110/220 V) • Performance estimates—range, top speed, and recharge time—based on the chosen components • Email or chat support to clarify questions while I gather parts and start assembly Acceptance...