Rfidcông việc

Đọc dữ liệu từ thẻ RFID (thẻ thông minh có gắn cảm biến gia tốc, dùng IC Tag SL900A), Reader dùng AS3993 của AMS, công nghệ UHF RFID tần số 915MHz. Phần mềm được viết bằng C++ dùng Qt (mã nguồn mở) làm môi trường thiết kế. Mình đã làm được hơn 50% rồi, tuy nhiên việc đọc tín hiệu hay bị mất gói, mình không giỏi về lập trình cho lắm.

- Đọc ghi dữ liệu vào thẻ tag RFID chuẩn ISO15693

...equally at home flashing code with ESP-IDF/Arduino C++ and laying out simple PCBs or reviewing schematics. Core task The boards will gather data from several sensors and peripheral modules, then broadcast or exchange that data over BLE with my mobile apps and back-end services. So far, the project roadmap includes: • Temperature sensors • Motion sensors • Humidity sensors • GPS, LoRa and RFID modules Your role – Extend and optimise the ESP32 BLE firmware to handle the data flow from the devices above, keeping power consumption low and connections reliable. – Design or refine schematic/PCB revisions when new components are introduced. – Produce clean, well-commented source code plus concise hardware files (KiCad, Eagle or Altium...

...automatically. The system should have one main sheet called DATA ENTRY where we enter the following columns: Date Route No Bus No Driver Conductor Total Collection RFID Collection HSD Litres (diesel filled) Expense From this data Excel should automatically calculate: HSD Cost = HSD Litres × Diesel Rate (currently ₹91) Net Collection = Total Collection − Expense If Net Collection becomes negative, it should automatically appear in red. From the DATA ENTRY sheet I want Excel to automatically generate the following reports. First, a Route Summary Report. This should show route-wise totals including total collection, total RFID, total HSD used, total expense, total HSD cost, and total net collection. This will help us understand which routes are profitable a...

I look for hardware developer. Electronics schema and pcb designer.

This projects requires the design of 2 PCBA's plus wiring and advice on other components with all connections. 1) For BlayzPad, a handheld controller with a display, antenna, ESP32S3 and ESPNOW commununications 2) A BlayzPoint with 133 addressable LED's, SD card, RFID reader/writer, twin 18650 batteries, 2 Speakers, ESP32S3 and ESPNOW communications. Both projects with USB C for flashing and charging.

...required Height will be adjusted with standoffs 4-wire cable from display soldered directly to PCB pads Buttons: 1x membrane switch connector (2-pin) for main button 2x additional button footprints connected to spare GPIO pins (for future use) Buzzer: Passive buzzer mounted directly on PCB Connected to designated GPIO via NPN transistor + flyback diode driver circuit (active HIGH trigger) RDM6300 RFID Reader: Properly mounted on PCB External antenna connected via PCB-mounted jack/connector Signal traces should be impedance-matched and isolated from noisy traces (power, GSM) to prevent signal degradation USB Type-C Port: Dedicated USB Type-C female connector on PCB, wired to the dev board's USB lines Should protrude ~2mm from PCB edge for easy access through enclosure Thi...

I’m building an automated live-play poker table and need the complete RFID hardware blueprint that will let software read every chip on the felt in real time. The table will hold well over 100 tagged chips at once, and I want reliable High-Frequency (13.56 MHz) reads at a maximum distance of about 10 cm from the antennas under the layout. Your task is purely on the hardware side: define an architecture that can see each chip as stacks move, bets slide, and pots grow, then pass clean data to the software team through a simple API or wired interface of your choice. Key expectations • Robust HF antenna array layout sized for a poker table, including multiplexing strategy to handle >100 simultaneous tags without collisions or dead zones. • Reader, controller, and ...

...surfaces should visually echo premium leather grain. Internally, I want two separate compartments that together hold at least 8–9 cards, with integrated RFID-blocking and enough tolerance so cards slide out smoothly but stay secure when the wallet is closed. Here’s what I need from you: • A fully detailed CAD model (STEP or SolidWorks preferred) suitable for CNC machining or metal injection moulding, including all parting lines, draft angles and hardware call-outs. • High-quality renders that showcase the texture, colour, and overall form so I can review aesthetics before tooling begins. • An exploded or section view that illustrates how the RFID-blocking layer is incorporated and how the two card-stacking sections fit together. I’ll...

I need a skilled IT developer to create a robust access control system. The software should integrate the following key features: - Biometric authentication - RFID card access - Remote access capabilities Ideal skills and experience: - Expertise in software development, particularly in security systems - Experience with biometric and RFID technologies - Strong background in developing remote access functionalities - Knowledge of database management for secure data handling - Ability to deliver a user-friendly interface Looking for someone who can ensure high-security standards and is able to work within my budget. Please provide examples of similar projects you've completed.

...regular intervals. • Employ automated leak detection where possible. Standards Reference • HACCP Principle 7 – Verification procedures. • GMPs – Finished product handling and storage. 3. Labeling and Traceability Requirement • Labels must include product name, lot number, allergen info, expiry, and storage instructions. • Must tie back to manufacturing records. Best Practices • Implement barcode or RFID systems for traceability. • Link label data to production batch records. Standards Reference • FDA Labeling Requirements – Nutrition, allergens, traceability. • ISO 22000:2018 – Clause 8.3, traceability system. • HACCP Principle 5 – Monitoring procedures to ensure label accuracy. Monitoring, Verifi...

...experience, specifically NFC antenna design at 13.56 MHz - PIN diode switching circuit design for antenna arrays Preferred: - STM32 firmware development, ideally with STM32duino (Arduino core for STM32) - Experience with JLCPCB SMT assembly process - KiCad or EasyEDA Pro (no Altium-only engineers please) SELECTION CRITERIA: Please include in your proposal: 1. A brief description of a previous NFC/RFID antenna project you completed 2. Your assessment: Is PIN diode switching the right approach for 8 antennas, or would you suggest an alternative? 3. Your estimate for total scan time of 16 positions with the ST25R3916B 4. Availability and timezone I will NOT select based on lowest price. I have been burned by cheap, fast promises before. I want a clean, minimal, working design....

...aircraft toward the MRO hangar RFID safety confirmation from wing walkers Aircraft enters the hangar Correct hangar stop line positioning Maintenance status visualization Digital logbook validation (status changes from red → green) Aircraft exits hangar Aircraft positioned and ready for departure The animation should clearly demonstrate safe aircraft movement, operational efficiency, and digital validation steps. Visual Elements to Include Aircraft Ground Movement Realistic towing of aircraft using a towing tractor including: correct speed proper turning radius believable aircraft weight and inertia Wing Walker Safety Confirmation Wing walkers guide the aircraft during hangar entry. A visual digital confirmation overlay appears showing: RFID confirmat...

...environment and tighten up the way we handle our retail product stock. The core of the assignment revolves around three interconnected objectives: 1. Ongoing stock tracking 2. Precise reorder-point configuration 3. Thorough, scheduled inventory audits We already operate with a fully featured inventory platform, so you’ll be working in a system that supports real-time data feeds, barcode/RFID inputs, and multi-location reporting. Your task is to use those capabilities—not rebuild them—ensuring on-hand counts stay accurate, replenishment triggers align with realistic lead times, and audit results flow back into the system to close any discrepancies. To succeed, you should be fully comfortable diving into an enterprise-grade tool such as NetSuite, Cin7, Fi...

I'm seeking a skilled 3D designer to create a medium-sized (2 to 4 inches) keychain. The keychain should be designed to be made from plastic and printed on a 3d printer. Requirements: - Design should be a corporate logo, which will be provided. . - Keychain size should be medium (2 to 4 inches). - Final design should be suitable for 3d printing. Print will be paused to install RFID chip. Ideal Skills and Experience: - Proficiency in 3D modeling software (e.g., Blender, Tinkercad) - Experience with designing for plastic fabrication - Creativity in design across various styles

**Project: Cross-Platform RFID & Bluetooth Asset Tracking Mobile App** We are seeking experienced mobile developers who have previously built applications integrating **RFID readers and Bluetooth Low Energy (BLE) tracking**. Only apply if you have real project experience in this domain. ### Project Overview We are building a cross-platform asset tracking application for iOS and Android that combines RFID and Bluetooth technologies to enable fast, accurate equipment tracking — even in complex indoor environments. ### Core Requirements The mobile app must: • Display real-time asset locations via map or list view with automatic refresh from reader data • Detect and display repeated tag reads within the same scan window • Support stock-counti...

I'm looking for an experienced Java developer to create a desktop application that serves as a user interface tool (RFID checkout system with face ID). The application needs to support both Windows and Linux operating systems. Key Requirements: - Development in Java - Support for Windows and Linux - Functionality as a user interface tool Ideal Skills and Experience: - Proficiency in Java and desktop application development - Experience with cross-platform compatibility, especially on Windows and Linux - Strong understanding of user interface design and usability principles

I'm looking for an experienced Java developer to create a desktop application that serves as a user interface tool (RFID checkout system with face ID). The application needs to support both Windows and Linux operating systems. Key Requirements: - Development in Java - Support for Windows and Linux - Functionality as a user interface tool Ideal Skills and Experience: - Proficiency in Java and desktop application development - Experience with cross-platform compatibility, especially on Windows and Linux - Strong understanding of user interface design and usability principles

...Departure time - Required SoC - Vehicle arrival time Features - Automatic charger assignment - Readiness dashboard - Predictive energy demand - Vehicle swap suggestions - API-first architecture --- 4.4 Subcontractor Charging & Payments Access methods - RFID - Mobile app token - QR code - Contract ID - Optional roaming (OCPI-ready) Pricing models - kWh pricing - Time-based pricing - Session fee - Idle fee - Subscription - Dynamic pricing Payment methods - Credit/debit card - Mobile wallets - Invoice billing - Account balance - RFID billing Finance features - Automated invoicing - VAT handling per EU country - Revenue split between operators - Settlement reporting - Export to ERP/accounting Compliance - PSD2/SCA via PSP - MID-compatible metering - GDPR data...

...convenience. The core of the project is an RFID-based tag that can broadcast its position in real time, giving travellers instant peace of mind whenever their bag is out of sight. Here’s the vision in more detail: • Hardware: an RFID module small enough to blend into a standard bag tag, yet powerful enough to enable always-on, real-time tracking when paired with our planned mobile app or web dashboard. • QR layer: each tag must also carry a static, tamper-resistant QR code that, when scanned, reveals the owner’s name and phone number. That is the only data we want exposed for now; the architecture should leave room to add email or other fields later without re-printing the tag. • Connectivity & data flow: I need a clean, well-documented...

我们正在为一家德国健身房连锁升级跑步机控制系统，目标是在 2-3 个月内把 RFID 识别功能无缝接入合作方的 Android 平板。项目直接服务于现有业务，任何延迟都会影响门店上线排期，因此我特别看重过往 Android 与硬件打通的实战经验。 核心工作 • 在 Android 应用层完成 RFID 标签识别、数据读取与会员账号绑定等核心逻辑，并保证高并发场景下的稳定性与容错 • 对接现有 RFID 模块，解决驱动、协议或功耗问题 • 与公司后端接口联调，保证设备与云端数据一致且实时 • 独立完成功能测试、缺陷定位和修复，并撰写接口说明、模块设计与使用指引 • 每周参加海外英文例会、评审会，英文汇报进度与风险，会后输出英文会议纪要 交付物 1. 可在指定跑步机硬件上运行的 Android APK（含 RFID 功能） 2. 对接文档、接口清单与使用手册（中英双语） 3. 测试报告及缺陷闭环记录 4. 会议纪要及风险跟踪表 协作方式 • 允许远程为主，有需要时可线下沟通 • 能适应晚间跨时区会议 • 主要挑战在语言障碍，需流利英文听说及书面沟通 如果你具备 3 年以上 Android 开发经验，并且真正动手做过 RFID / NFC / BLE 等硬件通信项目，欢迎一起完成这次健身设备升级。

...socket Teensy 4.1 ARM Cortex-M7 @600MHz audio DSP (61×18mm) 2.54mm headers SL2.1A USB Hub IC 4-port USB 2.0 hub Surface mount XIAO ESP32S3 LoRa module (21×18mm) 1.27mm headers STM32WB55 Module Dual-core ARM Cortex-M4/M0+ (Flipper brain) 8-pin header PyBoard v1.1 ARM Cortex-M4 backup controller 6-pin header GPS Module NEO-6M/8M 4-pin header CC1101 Module Sub-GHz radio 8-pin header ST25R3916 Module NFC/RFID 8-pin header OLED Displays (2x) 1.3" 128×64 I²C 4-pin headers Trackball Module BlackBerry-style USB HID 4-pin header Power Regulation 5V/3.3V from 10000mAh USB-C power bank + CR2032 coin cell (RTC backup) USB-C + through-hole External USB-C Ports (2x) Panel mount, power + data USB-C connectors PCB Specifications: Parameter Requirement Layers 4-layer (...

...need is a fresh, expert perspective that converts those raw inputs into a clear, phased action plan. Your work will cover three pillars: • Customer journey mapping – observe or virtually analyse how shoppers move through the store, pinpoint drop-off moments, and recommend flow, signage, and merchandising tweaks. • Technology touchpoints – identify the right mix of digital kiosks, self-checkout, RFID, or mobile POS that fits our current infrastructure and budget while cutting queues and boosting engagement. • Staff and service design – propose training, role redesign, or incentive tweaks so our team delivers consistent, on-brand interactions at every touchpoint. Deliverables I’m expecting: 1. A concise audit report summarising pain poin...

...for stable operation, including: Component ratings verification Power design validation Decoupling and grounding ESP32 stability considerations LM2596 switching regulator layout considerations Identification of missing or incorrect components If any improvement is required, you must suggest changes before PCB layout begins. 3. RFID Circuit Integration An RFID reader circuit must be integrated directly into the schematic and PCB design (not as a separate module). The RFID section must be properly placed and routed as part of the main PCB layout. Further details will be provided after project start. 4. Placement Draft (Mandatory) A component placement draft must be shared for approval before routing begins. 5. Deliverables Updated schematic (if modified) PCB layout in...

I have individual, validated firmware blocks for the STM32L432KBU6 that handle an LIS3DH accelerometer (interrupt-driven), an EM4095 RFID front-end, the MCU’s internal touch-sensing controller, and a UART-based E220-400T22S LoRa module. My next step is to merge these routines into one cohesive, ultra-low-power application on our custom PCB. Power optimisation is the top priority. I want the system to remain in STOP mode most of the time, waking through the LIS3DH interrupt and periodic RTC events. When active, each peripheral must communicate reliably without compromising the sleep budget. Key points • Integrate existing C-based drivers into a single project • Configure and test the STOP-mode strategy, ensuring wake-ups from both the LIS3DH and the RTC function ...

Necesito ayuda puntual para afinar un proyecto existente sobre ARM STM32. El hardware ya cuenta con: • Protocolo de comunicación binario implementado • Dos tiras WS2812 de 60 LEDs cada una, controladas de forma independiente • Módulo RFID PN532 • Conjunto de switches de entrada Mi prioridad ahora es la integración del RFID y los switches; los obstáculos que enfrento son Problemas de software. Quiero que ambos elementos se lean de forma fiable y se enlacen correctamente con el resto de la lógica ya programada. Busco a alguien con demostrable Experiencia en: – Desarrollo sobre microcontroladores STM32 (bare-metal o HAL). – Manejo de periféricos I²C/SPI, interrupciones y temporización preci...

Necesito ayuda puntual para afinar un proyecto existente sobre ARM STM32. El hardware ya cuenta con: • Protocolo de comunicación binario implementado • Dos tiras WS2812 de 60 LEDs cada una, controladas de forma independiente • Módulo RFID PN532 • Conjunto de switches de entrada Mi prioridad ahora es la integración del RFID y los switches; los obstáculos que enfrento son Problemas de software. Quiero que ambos elementos se lean de forma fiable y se enlacen correctamente con el resto de la lógica ya programada. Busco a alguien con demostrable Experiencia en: – Desarrollo sobre microcontroladores STM32 (bare-metal o HAL). – Manejo de periféricos I²C/SPI, interrupciones y temporizació...

...real-time PDF preview system Developed responsive UI using Tailwind CSS and Framer Motion Implemented accessible components with ARIA standards Managed application state using React Hooks and Context API Integrated dark/light mode theming Optimized rendering using and useCallback Tech Stack: React, TypeScript, Tailwind CSS, Framer Motion, Context API Smart Lock System (IoT Project) Developed RFID-based secure access system using Raspberry Pi Pico Implemented MicroPython logic for authentication and monitoring Integrated servo motor and keypad-based access control...

...second and stored for later reporting and billing. • Vehicle registration via RFID tags – drivers scan once and the system should pull the tag ID, match it to a plate number and open the gate instantly. • Staff registration with two access tiers – an Admin workspace for full control (add / remove / edit users, rates, reports) and a Staff workspace for day-to-day monitoring, check-ins and basic edits. The project is pure web tech, so please use a modern stack you’re comfortable with (React, Vue, Laravel, Node, Django—your choice, just outline it). RFID readers will be exposed over the network via an SDK/API; I’ll supply sample data and device documentation. Acceptance criteria: a responsive browser UI, live RFID reads upd...

I have a Zebra fixed RFID reader with its paired antenna already installed on-site and now need it fully integrated into my own custom inventory-management software. The end goal is simple: every tag read by the reader must flow straight into the application so I can see precise item locations in real time and trigger automatic inventory counts without manual intervention. Here is what I expect: • Configure and fine-tune the reader and antenna for consistent EPC Gen 2 tag captures across our storage area, including power, sensitivity, and antenna multiplexing settings. • Build the middleware or direct API hooks—using the official Zebra SDK, REST streams, or another proven method—to push read events into my custom software database and message queue. &b...

...develop a complete RFID tag electronics solution for tracking equipment used indoors in high-humidity environments, such as laboratory instruments, workshop tools, and test equipment. The goal is to attach a small, flat, flexible, and lightweight shelf-style RFID tag (similar in form factor to book or library tags) to each asset. The tag must be rugged, low-profile, and suitable for attachment to fabric or textile surfaces, while remaining readable quickly and reliably by standard RFID readers. The system should enable identification of an item’s presence and approximate location within the facility. The tag must also be capable of reporting enclosure temperature and humidity via RFID. Scope of Work 1. RFID Technology Selection Evaluate and rec...

We are a CONSULTING company based in the European Union offering high-value technical PLANNING - GERMAN STANDARD and concept services to clients across industry, logistics, hotels, and commercial facilities. We are looking for experienced freelancers to support our projects in the following areas: Areas of Expertise: RFID Access Solutions – industrial facilities, hotels, commercial buildings, machine authorization Radio & Antenna Concepts – LoRa, WLAN, LTE/5G indoor coverage, antenna layout and field planning Automation Concepts – PLC design, process control workflows (planning only, no on-site execution) Robotics Concepts – educational and industrial robot integration, process optimization What We Offer: Remote collaboration across the EU Clear p...

...déroulé des activités, démontage) ; – identifier les ressources techniques et humaines nécessaires (équipements numériques, artistes, animateurs) ; – prévoir des solutions pour mesurer et optimiser l’engagement du public adulte tout au long de l’événement. Une expérience avérée dans la production de festivals ou d’événements culturels innovants, la maîtrise d’outils interactifs (mapping, RFID, applications mobiles, etc.) et un réseau d’artistes ou de médiateurs seront de véritables atouts. Je privilégie une approche collaborative : faites-moi parvenir vos références liées...

We are a CONSULTING company based in the European Union offering high-value technical PLANNING and concept services to clients across industry, logistics, hotels, and commercial facilities. We are looking for experienced freelancers to support our projects in the following areas: Areas of Expertise: RFID Access Solutions – industrial facilities, hotels, commercial buildings, machine authorization Radio & Antenna Concepts – LoRa, WLAN, LTE/5G indoor coverage, antenna layout and field planning Automation Concepts – PLC design, process control workflows (planning only, no on-site execution) Robotics Concepts – educational and industrial robot integration, process optimization What We Offer: Remote collaboration across the EU Clear project scope and d...

...user who took the action. Location control is critical. Every product must be assignable to a bin slot that carries its own capacity rule, and the moment a slot hits its max the system must block further allocations unless an Admin overrides it. To make physical handling painless, the app should let me print a barcode or QR code for every bin and every item, then scan those codes—or even use an RFID reader—to confirm what is actually sitting on the shelf. The interface itself has to stay clean: a dashboard where people sign in, see today’s inbound and outbound movements, search inventory, and run three essential reports—Inventory Summary, Usage History, and Location-Based Inventory. I only need two roles for launch (Admin and Warehouse staff), but the ar...

We are seeking an experienced Electronics Engineer with strong expertise in PCB antenna design to develop a modular interactive hardware system for a public exhibition environment. The system includes: A Teensy 4.1–based Master Hub 50+ circular Slave Nodes (120mm) featuring high-density LEDs and RFID/NFC sensing This is a specialist-level project, ideal for engineers with 4–5+ years of proven experience in antenna PCB design, RF systems, and power electronics. Core Technical Requirements -Antenna / RF Design -PCB antenna design & tuning for ST25R3911B -7cm reliable read range through 3mm resin -ISO 15693 compatibility RF simulation & validation required -Power & Thermal Design -24V / 10A daisy-chained power bus -Circular PCB, 2oz copper, thermal via stitch...

I need a tailor-made manufacturing module for Odoo 17 that will let my manufacturing team record every product sample and immediately see what stage it is in. All entries will be done manually for now, so the interface must be fast, error-tolerant, and easy for operators who are not barcode or RFID experts. Later on I may add scanning options, but the first milestone is a rock-solid manual entry flow. Once the data is in, I want decision-ready insight, not raw tables. The module should generate interactive reports that combine: • Real-time analytics (current queue, pending tests, turnaround times) • Historical trend views (weekly, monthly, yearly) • Side-by-side comparison charts for batches, lines, or shifts Charts need to refresh inside the Odoo dashboard,...

I need a tailor-made LAB module for Odoo 17 that will let my manufacturing team record every product sample and immediately see what stage it is in. All entries will be done manually for now, so the interface must be fast, error-tolerant, and easy for operators who are not barcode or RFID experts. Later on I may add scanning options, but the first milestone is a rock-solid manual entry flow. Once the data is in, I want decision-ready insight, not raw tables. The module should generate interactive reports that combine: • Real-time analytics (current queue, pending tests, turnaround times) • Historical trend views (weekly, monthly, yearly) • Side-by-side comparison charts for batches, lines, or shifts Charts need to refresh inside the Odoo dashboard, with dril...

...decentralized solution that provides a transparent history of ownership, transaction prices, and origin. Key Features & Functionality Dual-Nature Marketplace: Support for both digital assets and physical goods linked to NFT tokens. Advanced Authentication Flow: A system for experts to validate items, which are then assigned a digital identity in the blockchain space. This includes the integration of RFID chips, tags, and stickers to link the physical product to its digital twin. User Roles: Separate login portals and dashboards for Brands, Sellers, and Buyers. Bidding & Sales Engines: Implementation of both fixed-price listings and auction-style bidding. Blockchain Infrastructure: A decentralized application (dApp) initially running on the Ethereum blockchain, util...

I need a tailor-made LAB module for Odoo 17 that will let my manufacturing team record every product sample and immediately see what stage it is in. All entries will be done manually for now, so the interface must be fast, error-tolerant, and easy for operators who are not barcode or RFID experts. Later on I may add scanning options, but the first milestone is a rock-solid manual entry flow. Once the data is in, I want decision-ready insight, not raw tables. The module should generate interactive reports that combine: • Real-time analytics (current queue, pending tests, turnaround times) • Historical trend views (weekly, monthly, yearly) • Side-by-side comparison charts for batches, lines, or shifts Charts need to refresh inside the Odoo dashboard, with dril...

I need an RFID-based platform dedicated to Asset tracking, but instead of equipment or vehicles the “assets” are People moving through my facilities. The system must reliably capture and store two key data points for every tagged individual: Entry and exit times as well as their wider Activity history while on site. Core workflow RFID badges (or wristbands) will be read at all controlled doors and strategic zones. Each read event should be time-stamped, linked to the person’s profile, and pushed in real time to a central database. A responsive web dashboard will let me filter by person, date range, or location and export reports for compliance audits. Tech expectations I’m open on the stack, yet a modern combination such as Node.js or Python on t...

I’m launching a smart RFID door-lock handle and require a short, photorealistic 3D product video to act as the primary visual showcase. The video should clearly communicate keyless access, advanced security, and a sleek, modern aesthetic—with a realistic, high-end look and feel. Creative Direction The camera should smoothly glide across the brushed-metal surface, emphasizing material quality and form. An RFID card or smartphone approaches the lock, subtle LED indicators activate, and the door unlocks and opens seamlessly. A brief exploded-view animation may reveal the internal protected chipset before reassembling, reinforcing the product’s security and engineering strength. Deliverables 25–30 second video, Full HD or higher Final export in MP4 for...

Single-Camera / RFID Lap Timing System for RC Racing Arena Project Overview We are building a standalone lap-timing system for an indoor RC car racing arena, using a single fixed-position input at the finish line. The system must detect each car crossing the finish line and calculate accurate lap times in real time, displaying results live on a dedicated monitor beside the track. Detection may be implemented using: RFID reader Computer vision (OpenCV / ArUco / object tracking) Hybrid approach (preferred if it improves reliability) The priority is accuracy, stability, and simplicity, not experimental or over-engineered solutions. Project Objectives Real-time lap detection with ±0.05 second accuracy Clear on-screen display suitable for public viewing Simple, repr...

Somos una empresa de seguridad electrónica en CABA que terceriza instalaciones y servicios de manera continua. En este momento valoro, por encima de todo, tu experiencia concreta en instalación y soporte técnico de controles de acceso —especialmente sistemas RFID—, aunque gran parte del trabajo también incluye cámaras CCTV/IP, cableado y networking básico. Qué vas a hacer • Montaje, conexión y puesta en marcha de controles de acceso RFID (lectores, cerraduras, paneles, fuentes). • Instalación y mantenimiento de cámaras; trabajo frecuente con equipos Hikvision y Dahua. • Tendido de cableado estructurado, armado de patcheras y canalizaciones limpias. • Configuraci&oacu...

I’ve made an intermediate-level video tutorial that walks readers through RFID fundamentals and how these tags integrate with access-control hardware. Before I publish, I need a second set of eyes to view the underlying protocols and standards to make sure every detail is 100 % correct. If you have hands-on experience sniffing reader-tag traffic with tools like Proxmark3 or similar, your insight will be especially valuable.

ESP32 tabanlı, GSM hatlı bir endüstriyel cihaz geliştiriyorum ve projenin omurgasını oluşturacak gömülü yazılıma öncelik veriyorum. Cihaz; SimCom GSM modülü, RFID/NFC etiket okuyucu, 2 analog giriş, 3 röle çıkışı, 1 PWM kanalı, ayrıca ekran ve tuş takımını içerecek. WiFi ile Bluetooth’un birlikte aktif olduğu bir mimari planlıyorum; uzaktan güncelleme / servis kolaylığı da hedefler arasında. Uygulama tarafında cihaz, sahadan GSM üzerinden yaklaşık 200 iş emri alacak, bunları sıraya koyup tamamladıkça yine GSM üzerinden sunucuya raporlayacak. İşlem güvenilirliği, güç kesintisine dayanıklılık ve hat içi (OTA) güncelleme kabiliyeti kritik. Elektronik tasarım ihtiyacım da var...

...from the initial batch (if applicable) Proper packaging Shipping costs will be paid by me, but must be discussed and approved in advance. No milestone will be released without: Video proof of the working physical prototype Confirmation of shipment (tracking number) If you cannot handle physical assembly and shipping, please do not apply. Required skills: ESP32 embedded development NFC / RFID (RC522, PN532, UID reading) Embedded audio (MP3 playback, I2S/DAC, amplifier, speaker) Firmware development & debugging Hardware testing on real PCBs Nice to have: PCB review & BOM validation Battery management (Li-ion) Experience with physical product prototyping Note This project already went through one iteration with another freelancer. I am looking for someone re...

Design and Implementation of a Non-WiFi Underground Miner Personnel Tracking & Emergency Rescue System (RFID-Based RTLS) PROJECT OVERVIEW We are seeking experienced mine-grade real-time location system (RTLS) / RFID solution designer and integrator to design a non-WiFi personnel tracking and emergency rescue system for underground mining operations. The objective is to implement a robust, intrinsically safe, real-time personnel tracking solution that enables the mine to locate miners in real time or last-known underground positions for emergency response, rescue operations, evacuation management, and compliance, without using Wi-Fi infrastructure. This project is currently at design and solution-architecture stage, with potential to progress into detailed engineering, ...

Our warehouse still relies on spreadsheets, and accuracy is slipping as order volume grows. To fix this, I need a complete RFID-based inventory system put in place. The focus is strictly on setting up the system; day-to-day stock tracking and future audits will stay in-house once everything is live. Deliverables • Workflow assessment and reader / antenna placement plan • Bill of materials for tags, fixed and handheld readers, middleware and any cabling • Installation and configuration of the chosen RFID software, database and user roles • One-time migration of current spreadsheet data so historical counts carry over seamlessly • User guide and a short remote training call so staff can handle daily operations on their own • Final acce...

Our warehouse still relies on spreadsheets, and accuracy is slipping as order volume grows. To fix this, I need a complete RFID-based inventory system put in place. The focus is strictly on setting up the system; day-to-day stock tracking and future audits will stay in-house once everything is live. Deliverables • Workflow assessment and reader / antenna placement plan • Bill of materials for tags, fixed and handheld readers, middleware and any cabling • Installation and configuration of the chosen RFID software, database and user roles • One-time migration of current spreadsheet data so historical counts carry over seamlessly • User guide and a short remote training call so staff can handle daily operations on their own • Final acce...