110v 110v invertertrabajos

Necesito controlar un variador de frecuencia pero a control remoto, este variador de frecuencia controla un motor de 2 hp, Esto necesito que sea controlado de una distancia de 15 metros no más que eso. En este control a distancia, necesito que regule la velocidad del motor, cambio de giro y encendido y apagado. Translation: I need to control a frequency inverter but remotely, this frequency inverter controls a 2 hp motor, I need it to be controlled from a distance of 15 meters no more than that. In this remote control, I need it to regulate the motor speed, change of rotation and start and stop.

Actualización del curso de energia FV. En dos hitos. 50% cada uno. Uno a la primera entrega y otro al incluir cambios propuestos. La revision ha de incluir actualizacion de graficos (con fuente) y la inclusion de nuevo temario como el referente a modulos bifaciales, string/cebtral inverter, seguidores, o híbridacion.

Smart plug 110v 5 amperios maximo, se requiere diseño pcb mas layout

Tenemos un parque de unas 300 maquinas que necesitamos tener un control remoto de las tarjetas de control de unos compresores de aire. La tarjeta de control del compresor en un HMI de pantalla táctil de 7" de marca propia del fabricante. En esta tarjeta controla el funcionamiento la maquina, controla dos inverter por rs485 modbus , temperatura del aceite, presión de aire, horas de funcionamiento , horas de carga, horas de mantenimiento, alarmas, rpm, consumo en Kw, etc.. Nuestra idea inicial es : el estado de la maquina desde el móvil con un nivel de acceso Usuario 2. con un nivel de acceso Distribuidor poder visualizar y controlar remotamente el equipo para cambiar parámetros, parar o arrancar maquinas. 3 habilitar alertas por email o sms, seg&uac...

Necesitamos contratar un freelance o compañía que desarrolle un eCommerce basado en la venta de Material Eléctrico iluminación LED, Cámaras IP etc.. con una opción de venta cruzada "completa tu compra" donde el cliente pueda elegir la opción de Instalación del producto o de su mantenimiento anual. ejemplo de venta cruzada: Requisitos mínimos : -CMS a elegir por el desarrollador de fácil gestión ,se baraja la posibilidad de desarrollar esta bajo un tema prediseñado y personalizarlo para economizar costes. -Diseño Responsive

Programming PLC, Scada. Inverter / Servo setting Control modification

...jalará mediante el web server):                           Horizontal: Inicio - Quienes Somos - Contáctenos -                           Vertical:                          Accesorios                 Combos Teclado + Mouse             Diademas             Micrófono&nbs...

...jalará mediante el web server):                           Horizontal: Inicio - Quienes Somos - Contáctenos -                           Vertical:                          Accesorios                 Combos Teclado + Mouse             Diademas       &...

...jalará mediante el web server):                           Horizontal: Inicio - Quienes Somos - Contáctenos -                           Vertical:                          Accesorios                 Combos Teclado + Mouse             Diademas       &...

Necesito configurar la instalación electrica de una autocaravana.  Mas detalladamente consiste en instalar un generador de 3,5 kw de gasoil,  un cargador de baterias inteligente , las baterias necesarias de alto rendimiento  y un inverter de unos 3-4 kw.  Todo bien configurado para no tener problemas de suministro. Toda la autocaravana funcionara a 230 v, salvo lo imprescindible a 12 voltios.  Los consumos calculados nunca superaran dichos 3KW Este habitáculo va sobre un camión y estará en entornos complicados.  Todo el material tiene que ser de alta calidad.  Tu trabajo consiste en localizar los materiales y hacer el esquema de instalación completo hasta llegar al cuadro electrico de la autoc...

...with the rest of the picture (photoroom pic) 2nd page - Attached is an example please design and don't use this exact one - BMPRO logo bottom left hand side - a pic of the product ( photoroom pic) bottom right hand side - make this pop out at you almost like a 3D image to get your attention - The following in dot point format on the left hand side in BMPRO fonts (attached) *1600W Pure Sine AC Inverter *DC (5-24V) And AC (240V) Out/Input *12 Power Outlets *1485Wh (12V 120Ah) *Core LiFePO4 (lithium) Benefits *Light Weight For Easy Transport *Integrated MPPT Solar Regulator *Ergonomic And Robust Case *Extensive Certifications *Non-slip Rubber Feet *Fast Charge Rate – 2.5hrs To 80% *High-contrast LCD Screen *Active Cooling *5-year Warranty - the following heading in BMP...

I'm seeking an experienced Electrical Engineer to help with the integration of device communication protocols. Key Responsibilities: - Implement communication protocols for integration - Ensure the device can communicate seamlessly with other systems Ideal Candidate: - Proficient in power electronics and inverter hardware design - Experienced in integrating device communication protocols - Strong understanding of electrical engineering and power systems This project will require a high level of technical proficiency and attention to detail. The successful candidate will have a proven track record in similar projects and be able to deliver high-quality results within the agreed timeframe.

...Project Details: - The primary purpose of the PV system is power generation. - I need the simulation to provide details on basic electrical parameters and arc dynamics. - I need the simulation using different arc models (Cassie, Mayr, Habedank, Kema, Paukert, Modified Paukert, and Heuristic model). - The Pv system should be connected to the grid. - The Pv system should have a dc-dc converter and inverter. The ideal freelancer for this project should have: - Strong expertise in MATLAB - Simulink - Experience with simulating electrical systems - Familiarity with photovoltaic systems would be a plus - **Fault Duration and Conditions**: The simulation should be able to replicate varying dc arc fault durations and conditions to ensure the robustness of the system in different scenari...

I'm looking for a 5kW solar inverter specifically designed for residential usage. It should be equipped with a battery backup system to ensure continuous power supply during outages. Key Requirements: - 5kW Power Output: The inverter should be capable of handling 5kW of power, suitable for residential usage with inductive loads. - Battery Backup Compatibility: It must be designed to work with a battery like lead acid and LifePO4 battery of 48V which will be a 16 string LifePO4 battery.. This is crucial for ensuring uninterrupted power during times of outages or low sunlight. -Tgere whouxl be an lcd screen to do settings and check status. - Residential Suitability: The inverter should be designed for residential environments, taking into account factors like spa...

I'm in the process of renovating my house and I'm in need of a skilled Solar Engineer to help me with the second fix of the Solar Installation. The ideal candidate should have experience and skills in: - Wiring and connections: You should be able to efficiently connect the solar panels to the inverter and the system to the grid. - Mounting solar panels: You need to be able to install solar panels on the roof according to the solar plan. - Testing and commissioning: Once the solar panels are installed, you should be able to test the system thoroughly and commission it so that it can start running. I'm looking specifically for someone with experience working with Monocrystalline solar panels. Please note that you would be responsible for providing all materials nec...

I've got a commercial warehouse that requires an efficient, robust photovoltaic system designed to satisfy high levels of energy consumption, more than 5000 kWh per month. I am seeking an experienced professiona...performance, and highly efficient photovoltaic system which ensures seamless operations and significant cost savings in the long run. I would like to have: - System sizing using one of the solar system design software - Performance report of the solar system: what's the power generation all year through at the given location - Financial analysis - BOM: list of material given the solar panel and inverter I chose, power optimiser, log, monitoring software, cables, electrical security devices - Electrical scheme Basic information included into attached PDF Thank...

I am looking for a freelancer who can provide a detailed quotation analysis as well as perform the operation and maintenance tasks for my 55MW ground mounted solar power plant. The primary foc...freelancer who can provide a detailed quotation analysis as well as perform the operation and maintenance tasks for my 55MW ground mounted solar power plant. The primary focus of this role is to perform routine maintenance and inspections on the solar power plant. Performance optimization is also a key aspect of the role. Specifically, I am interested in improving the solar panel efficiency, inverter efficiency, and overall system efficiency. Ideal candidates for this role should have a strong background in solar power plant operation and maintenance and experience in performance opt...

...a blown resistor, on my inverter. Its code is unreadable. I need to find someone who has the exact same version of this inverter, with experience in handling this kind of devices, to locate the original working resistor on the board, and take a photo of it, with a visible full code. The version of the inverter must be an exact match. It must be the Xian Ke Zhi, 48V, 5000W, and the sticker, and board layout, must be the same has the provided photos. This version does not seem to be manufactured anymore. There is a new version, that has a different sticker (blue instead of orange, and other differences), but the board layout is different, and it doesn't have the same resistor, in the same place. Priority will be given for someone who actually has the same i...

As a developer, I'm seeking expertise in crafting efficient C# code to interact with a JKBMS (inverter BMS). My needs are twofold. • JKBMS Read Operations: Your paramount task will be to read specific battery data from the JKBMS. The required data includes the battery's voltage, temperature, and State of Charge (SOC). • Integration with Existing Program: Once the data retrieval is done and example fully works. is to help me integrate it with my existing program. An accomplished C# programmer with prior experience in system integrations, particularly working with BMS systems like JKBMS, would be the most suitable for this task.

I require an experienced PLC programmer to look into my multi-level parking system. With a focus on: - Review of the existing PLC program - Troubleshooting potential issues using TeamViewer Currently, the system is experiencing errors during the parking or retrieval process which needs rectification. We changed the inverter to the parking system to Yaskawa. The PLC program may need to be reviewed as the automated process is no longer working. No error messages. Just not working as before The ideal freelancer is one who has: - Excellent understanding and troubleshooting skills for multi-level parking systems - Ability to successfully detect and resolve system errors - Prior experience with automated parking systems is preferred.

The project is to create Inverter automation to start export, stop export and charge the battery automatically using a microcontroller that can subscribe to the server to get spot prices to run the automation. Objectives: 1. Modbus read and write 2. ESP32 Webserver 3. Spot price subscribe 4. Calculation / rules 5. MQTT Service (Server) 6. Price Service (Server) 7. Device Dashboard (Server) Project scope and system architecture are referred to the project brief documentation "Inverter Automation Project "

I need assistance in simplifying the library management of a Platformio project. I need the openDTU Project to be simplified so that all the network and mqtt stuff is removed. I want just the inverter control functionality in that library so that im able to control it with the ESP32 without internet connection.

I need someone who can simplify a c++ project for me. The project is the openDTU repository on GitHub () . I want just the inverter control functionality without all the web and cloud connection stuff. I want a library where I can add a device and control it on a ESP32 directly without connecting it to the internet.

I am looking for a proficient C++ develo...who can simplify the openDTU projekt so that I will have only the inverter control functionality without all the other protocols. I want to be able to control the inverter with the ESP32 directly. over the nrf24l01+ module. The Projekt is found at: The OpenDTU is a DTU which enables control of multiple different solar inverters. The Projekt uses a web app to add/delete inverters and show or control the values which the solar panels are producing. I want to use the inverter control functionality inside of my own project so that I need library where I have the same features than in the web app but controled in my own code. So the task is to simplify the openDTU project for just the inverter control functionality.

HELLO :) We are already running on Espcode, that can pull/change modbus on solar inverters(mostly growatt) We need to expand this code, and make it able to take energy (Spot prices) into relation. We use ESP32 1. Be better grapchal looking (Web interface) 2. Access to the energy Prices (Live spot prices) 3. Be able to choose between DK1 or DK2 (This is price regions in denmark) (Also we need to expand to other countries later on) 4. Add tax/vat/tarifs 5. Code needs to be stand alone, meaning it should be able to run without home assistant, but also should be compatible with home assistant. 5. Allow Simple automations, like: Stop exporting electricity if spot price falls below X. or like Start charing battery if prices go lower than X Potentially we i will need you to work with us on ...

I am in need of a professional who has expertise in solar panel system that will be generating electricity for my home. Key requirements: - Proven experience with Hybrid Solar Inverter - In-depth knowledge of residential solar panel setups - Sufficient understanding of electric systems related to residential properties - Preferably certified in solar installation (but not compulsory) - Certified electrician The ideal candidate will guide me through the complete process, from equipment selection (if not provided) to full implementation, ensuring the system runs at maximum efficiency. Prior experience in similar projects is highly appreciated. I have already got the G99 application from DNO.

As a solar energy enthusiast working with a Windows PC, I am seeking a proficient software programmer to write a program for USB to RS-485 communication. This program will retrieve real-time operating conditions from my solar inverter and present it on a visual dashboard - the program also needs to be able to change key operating parameters. Key Requirements: - Development of a program that facilitates communication between PC and solar inverter over USB to RS-485 - Enable the retrieval of real-time operating conditions data from the solar inverter - Create a clear, easy-to-use visual dashboard to display this data in real-time Ideal Skills and Experience: - Proficiency in software programming and systems integration - Previous experience with USB to RS-485 communica...

... Також доступна можливість збільшення представленості та впізнаваності вашого інтернет-магазину в мережі, більш точного таргетування та, як наслідок, збільшення обсягу продажів пропонуємо підключити каталог ваших товарів до розділу «Де купити?» на сайті https://erc.ua. Приклад за посиланням: Додатково ви отримуєте безкоштовний ресурс для залучення клієнтів. Для розміщення нам необхідне посилання на ваш оновлений прайс-лист у форматі xml c обов'язковим зазначенням коду (артикулу) товару ERC у тезі <vendorCode> або <code> Рекомендована структура файлу: <categories> <category id="1">Категория товара</category> ... <item id="123123"> <categoryID>1</categoryID>

**Europe-based ONLY** We are in need of a knowledgeable and experienced Electrical Engineers with a specialisation in solar battery power systems (eg: AC/DC Inverter, LifePo4 storage). This project centres around the design, planning, and building of power generation/ storage systems inside trolley/ tool boxes. Skills and experience you should ideally possess: - Expertise in designing and developing portable energy systems - Understanding of the latest power generation equiment and optimisation - Experience on energy management, storage and power electronic technologies. Project deliverables include schematic designs, system layouts, and a comprehensive implementation plan for this renewable energy-based portable power station unit. If you have the necessary skills and exper...

Hello There! My name is Cosimo ...on Faraday’s law and on the induction equation “f.e.m.= magnetic flux/time” so you could make the aluminum part jump higher by giving the electromagnet more current (increasing the magnetic flux). But I would like to see if the formula works also in the other way: so by keeping the same current and supplying a higher frequency (so by reducing time in the induction equation) So I would need an inverter that can supply a higher frequency current (higher than 50Hz) to the electromagnet and keeping the 220V from the home power socket and see if the piece of aluminum actually jumps higher. I’m sorry if I wasn’t able to explain good enough for you to understand, so I’ll be more than happy to answer any question or ...

Hello There! My name is Cosimo an...Faraday’s law and on the induction equation “f.e.m.= magnetic flux/time” so you could make the aluminum part jump higher by giving the electromagnet more current (increasing the magnetic flux). But I would like to see if the formula works also in the other way: so by keeping the same current and supplying a higher frequency (so by reducing time in the induction equation) So I would need an inverter that can supply a higher frequency current (higher than 50Hz) to the electromagnet and keeping the 220V from the home power socket and see if the piece of aluminum actually jumps higher. I’m sorry if I wasn’t able to explain good enough for you to understand, so I’ll be more than happy to answer any question or ...

I'm looking for expert assistance with the electrical plan/schematic setup of a medium-sized swimming pool 30m2. This will involve the installation of pool lights, a pump system, a heating system and spare wall plugs for potential future use. Here's what I need: Switch/electricL box, containing circuit breakers and timer to control: -Pool lights - pump system - full inverter heat pump system - 4 spare wall plugs for future utilization - salt water solinator. The timer should control all the above, ecluding the pool lights

I'm searching for a proficient 3D designer with experience in Fusion 360 to create a high-tech-inspired inverter roller speargun with anatomic handle. KEY REQUIREMENTS: - Create a high-quality 3D model based on the approximate dimensions I provide. - Emulate a high-tech style in the design. This should look cutting-edge and sophisticated. - Reflect wood as the primary material in the model to achieve a natural, robust and refined aesthetic. I will provide specific design guidance and feedback throughout the project to ensure it aligns with my vision. The ideal freelancer for this job has expertise in Fusion 360, 3D modeling for physical production, and an eye for high-tech design. A background in speargun design or related fields is a plus, but not required.

I require a seasoned motion graphics artist to create a product demo video. The primary objective? It's the launch of a revolutionary product - let's make an explosive entry. The imagery? Futuristic. Think along the lines of cutting-edge tech, holographic displays, sleek designs. Ideal experience and skills: - Motion graphics creation - Futuristic design aesthetic - Product demo videos and product launches - Ability to translate concepts into visually stunning animations Hit me up if you're keen on shaping the future one frame at a time.

...Previous experience designing real-time monitoring systems is also a plus. System standard: AC Line (110Vac or 220Vac) Normal Operation, Load is connected to AC Line in case of power loss, it will be supplier by li -ion battery Li-ion battery always charged by AC line (need to use BMS) Li-ion battery 12Vdc (18650 x 9pc) or more (expandable) Inverter input 12Vdc Inverter output pure sine wave 220Vac Inverter power: 1500W ** Need to design inverter!! not use from market ones ** Load: ac equipaments with high peak current : Load = 1/4HP ou 1/2HP (i.e: Refrigerator / Freezer / Automatic Gate) Need to have display output to show status of battery charge and input status (battery or AC) Need to have a button to manual switch from ac to battery Need to have ...

I require an expert with extensive experience and knowledge in electronics engineering, specifically inverter design to assist me in creating a high-frequency inverter. The input of this inverter will be 120V 50Hz, and it should output the same voltage but at a frequency of 85kHz. Key Requirements: - Purpose: The primary function of this inverter is frequency control. - Load: The inverter will be connected to a resistive load. - Efficiency: The design should aim for over 90% efficiency. Freelancers with a proven track record in high efficiency inverter designs are highly preferred. This project will require a clear understanding of power electronics principles and the ability to apply that knowledge to create a practical and efficient design ...

I'm seeking a skilled engineer to design a generator set powered by a 40 hp 1500 max rpm tractor's PTO. The design must be versatile, providing both DC for SMAW welding (9-48V, 10-500A) and AC power (15KW, 120 or 240V) for appliances. Required Features: - Utilization of an auto alternator or generator. - 12V or 24V battery system. - Digital or analog inverter - Some form of rheostat control for controlling welding amperage - Considerations for grounding and circuit breakers. - Peak performance at optimal rpms and comprehensive voltage regulation. - Off the shelf components highly desirable, so equipment specifications are more important than exact sourcing - Other than specifications for safe spacing of components, mechanical design is not required. Safety Features: - O...

...to create a proof of concept that unifies ESP32 with Azure IoT to manage my solar inverter system. Key Requirements: - Build an ESP32 system to gather data from a solar inverter via Modbus through RS485 protocol, including energy production data, voltage levels (0-1000V), current levels (0-100A), solar production, and all further available settings. - Implement the functionality to modify these inverter settings as required. - Develop a mechanism that enables seamless data transfer from the ESP32 system to Microsoft Azure IoT. Ideal Skills and Experience: - Comprehensive knowledge and experience working with ESP32 and Azure IoT. - Expertise in Modbus communication over RS485. - Understanding of solar inverter systems and data protocols. - Proven experienc...

I am seeking a qualified individual to create a wiring design blueprint for a solar power system. This project requires familiarity with 8 photovoltaics and Enphase IQ7 micro inverters, and experience with metering connected to a 110v 60Hz two-phase grid. Key Responsibilities: - Create a detailed design and layout of a solar power system for residential use - Perform an in-depth energy analysis, including the expected annual production of the system Present the wiring spec in the diagram with neutral, ground. Please note, I will be handling all the necessary permits for the installation so your focus solely would be on the designing and analytical aspect of the project. The ideal candidate must have a solid understanding of solar power systems, and a proven track record in de...

I'm looking for a professional in solar panel installations to work on a comprehensive project for a residential house. The project will involve the installation of 8 - 10 panels on both the house and in the backyard. I already purchased 8-10, 365-watt, mono panels, with an EG4 6000 XP 120/240 inverter, and two EG4 48v LL-S batteries. I'm looking to power a 3.5 ton mini-split with off-grid solar. I'm not looking to power the entire home at this time. Key Requirements: - Determine the best positioning for the panels to optimise sunlight and power output. - Advise on and install necessary infrastructure. I am not currently aware of any existing solar panel infrastructure in my home. - Recommendations needed: In terms of brands or models, I have no specific prefer...

...Knowledgeable in electrical circuitry suitable for industrial equipment. - Experience in designing electrical plans for workshops or similar environments. - Ability to create a design that is energy efficient and safe. Scope of Work: - Design an electrical system that supports LED lighting throughout the building. - Include plans for outlets specifications for equipment (110V, 220V, and 440V). - Plan for 8 or more sets of 110V and 220V outlets throughout the shop. 6 sets will be evenly spaced along the 'back' wall to service work stations. Another set of outlets on each end of the building. - Include 440V service to the building for future use. Lights are 8 LED panels: Condor Gen 3 LED High Bay, 300W, 5000K, 120-277V, Frosted Lens Light switch a...

I am looking to have a compact 220v inverter designed to power electronic devices during my travels. The ideal candidate for this job will have a deep understanding of electronic product design and development, especially in relation to power inverters. Key Requirements: - Compact Size: The inverter needs to be compact for easy transport during travels, yet capable of delivering the required power for various electronic devices. - Functionality: While the exact devices have yet to be specified, the inverter should be able to handle common electronic devices such as smartphones, laptops, and similar devices. Ideal Skills and Experience: - Extensive experience in electronic product design and development. - Proven portfolio of power inverter design projects. ...

Modbus, C++ Specialist, webserver, ESP32, Home Assistant, Hello :) We are looking for specialist who can develop system that can pull data from solar moss. inverter to esp32 and then show on web address. with contols and all working. will use a home assistant integration to handle the process.

...Home Assistant. Our goal is to tailor a customized package that facilitates easy deployment on a Raspberry Pi, enhancing our customers' solar system experience with real-time insights. Description: Integrate real-time energy production data, including power outputs from solar panels, and comprehensive energy consumption information (Grid, PV, Battery, and Consumption). Ability to configure all inverter settings via Home Assistant Ensure seamless integration of Solarman for a holistic view of solar system performance in real-time. Provide continuous updates and optimizations to ensure data display every second, delivering a truly immersive real-time experience. Requirements: Proven experience in Solarman integration and Home Assistant customization. Proficiency in Raspberr...

I am searching for a programmer specialized with STM32 to develop an inverter. Here are the core competencies you need for the project: - Knowledge of basic communication protocols like UART, SPI, I2C. - Ability to handle sensor integration. - STM32 programming experience, preferred language not specified. - In-depth knowledge in developing off-grid inverters would be a great plus. For this task, you will focus mainly on creating the inverter. The work may require employing a variety of communication protocols and integrating them with various sensors. Please confirm if you have these capabilities before bidding on the project.

I'm seeking a proficient AutoCAD freelancer to help me design a 5-10 meter pole which incorporates solar plates, an inverter, battery, camera, and other components. - The work involves creating a comprehensive and detailed CAD design of the structure. - The freelancer should ideally have a background in mechanical and electrical design, as well as significant experience with AutoCAD. - Your final deliverable will be a CAD drawing representing the layout and specifications of the pole and its add-on features. This role is well-suited to individuals who excel in detailed, precise work and possess a solid understanding of mechanical design and back office technologies.

I am seeking an experienced electrical engineer or talented drafter to make some alterations to an existing wiring diagram. The wiring diagram is for a control panel for a speed door, that we are having to add a dual channel emergency stop system into. We would therefore need the wiring diagram altering to show the new e-stop & e-stop relay as well as a power inverter to get from 400 to 24v. Parts being added are all of the shelf products, can send the links over to show products intended to be used.

I have a UPS circuit. I want to replicate it. I want its circuit schematics, Bill of materials, and Gerber file. The circuit is designed to support a wide AC power range, from 110V to 220V, providing flexibility for various power sources. It includes voltage surge protection to shield the device from fluctuations. The battery features overcharge protection, promoting long-term battery health. When AC power is available, the circuit operates with AC power and charges the battery. In the absence of AC power, it seamlessly switches to a battery backup. It should have a step-up converter during battery backup as one the output should be 24V. A safety cut-off activates if the battery voltage drops below 10V, ensuring reliable performance and protection for the connected device. The first...

We are looking for an Electrical Engineer with expertise in Automotive electrical work and testing equipment. We are looking to develop some equipment and need a highly qualified engineer to assist us. I am attaching some photos of the a/c compressor we are working on. We are looking for a EDT in High voltage brushless inverter 20 amps 3 poles

I have a MOES solar power transfer switch. This device seamlessly switches power from inverter power to mains power and vice versa. The problem with this device is that it switches by detecting the battery voltage and not the actual remaining power in the battery bank. This is a problem when using high inductive loads such as the electric kettle or washing machine etc as this pulls the voltage down temporarily while the heating element is on and causes the the solar switch to switch back to grid power because it has dropped below the voltage threshold. I have a Victron smart shunt that accurately measures the real time remaining power in the battery. I’m looking for a way to use the smart shunt information and somehow bridge that gap between the smart shunt and the switching u...