Dc to dc buck converter battery chargerJobs
Maintenance electrik,instalasi listrik,service AC,rewinding motor AC/DC,generator genset,PLTD,troubleshooting machine,programmer inverter & DC drive
Picture editing for phone charger etc.
...freelancer with intermediate Matlab skills to help optimize the energy efficiency of a battery system for renewable energy applications. Key Project Requirements: - Optimize battery system for energy efficiency: The primary focus of this project is to ensure that our battery system operates with maximum energy efficiency. This involves assessing current battery performance and implementing improvements in its energy consumption. Ideal Candidate: - Intermediate Matlab Proficiency: The perfect candidate for this project should be proficient with Matlab, having experience in battery system optimization. Previous work in the field of renewable energy systems would be a bonus. The goal of this project is to enhance the energy efficie...
I'm seeking a skilled graphic designer to create an engaging and informative leaflet for my automobile workshop. The leaflet's purpose is to showcase the services my workshop offers, introduce our expert garage mechanics, and provide detailed information about our workshop. Additionally, the leaflet should include relevant contact details to make it easy for potential customers to get in touch. Key elements to include: - Design a visually appealing leaflet that effectively communicates our services, introducing our expert garage mechanics, and detailing our workshop facilities - Incorporate the following services in an attractive and appealing manner: Car repair, Oil change, Battery replacement, Denting Painting, Modifications, upgrades,...
I am seeking a skilled professional to design and build a circuit that can sense current in DC mode, specifically for an electromagnet. This circuit will need to give a respective signal to stop or run the electromagnet, or another similar device like a hooter. Key Requirements: - The circuit should be able to sense currents of up to 150 amps. - The output signal should be of the NO NC type relay. Skills/Experience Required: - Proficiency in circuit design, particularly for current sensing applications. - Understanding of electromagnet operation would be highly beneficial. - Experience with relay-based output signal design. Please include any relevant experience you have in designing such circuits, and how you would approach ensuring the functi...
I'm looking to have an electrical diagram of an outdoor lighting system created. This system should incorporate: - LED lights (e.g., low-intensity for outdoor usage) - A battery that should power these lights uninterruptedly (small in size: not a car battery) - Both solar panels and a wind turbine to recharge the battery (both power sources would be a part of this system, and can automatically recharge the battery at any time based on whether solar or wind is available) - A way to monitor the level of charge within the battery at any given time Conditions for Charging: The battery should get recharged when there is an availability of wind or solar power. Skills and Experience Required: - Extensive knowledge about renewa...
...) that needs a layout update to look like the indesign file attached, keeping the same URLS as the previous one (do not use an automatic converter we want user friendly names for the CSS) and that it looks good on all screen sizes (layout changes for mobile might be needed) The ideal freelancer for this job should be proficient in HTML and CSS. You should have a good eye for design and be able to translate design files into a functional and visually appealing layout. A good understanding of responsive web design principles is also important. Key tasks include: - Implementing a new layout in the footer - Ensuring the footer is responsive and compatible with different devices - Making any necessary adjustments to the design to fit the existing webs...
...feedback loops. Key Requirements: - The CLD should include essential components such as power source, battery storage, and load demand. - Illustrate key influences or factors that are critical to the rural microgrid system, such as renewable energy availability, weather conditions, and energy consumption patterns. Ideal Skills and Experience: - Expertise in creating Causal Loop Diagrams, particularly in the context of energy systems. - Understanding of rural microgrid systems and the dynamics of renewable energy. - Proficiency in identifying and illustrating positive and negative feedback loops. If you have experience in similar projects or have the necessary skills, I would be glad to discuss further details with you. Please provide an overview of your relevant ...
Seeking an experienced embedded firmware engineer to develop a robust firmware for a wearable device. The system should feature Bluetooth, Wifi, and LTE capabilities that will include implementation of new characteristics/features through these wireless technologies as well as battery optimization of the device Key Requirements: - The firmware should support Bluetooth, Wifi, and LTE technology for seamless communication with our broker and other devices. - The device is intended for wearable use, so the firmware should be optimized for this purpose. - The code should be efficient and lightweight, considering the limited resources of a wearable device. - A good understanding of Bluetooth technology, particularly in the context of embedded systems, is crucial. Ideal Candidat...
I'm seeking a seasoned designer proficient in Zbrush, with a knack for creating detailed, fully-actu...Let's just do one character at a time and then gonfrom there before tackling all 10. The quote will be for just one of the characters. Additional features of the project include: - All characters ought to be made from plastic - Each figure should include removable accessories such as weapons or clothing Notably, if your portfolio showcases aesthetically appealing and durable action figures, I eagerly anticipate collaborating with you! I have made 3 prototypes already by Frankensteining Marvel Legend and DC action figures together to give you an idea what I'm looking for. I want to share them with the artist that will be helping me. I c...
I'm seeking a professional to create an insulation drawing for my Medical device that is currently at the production stage. Key requirements: - Create an insulation drawing for a simple circuit with DC power source, in accordance with IEC 60601 standard - Device has 1 DC motor, 2 9V batteries, 1 Resistor, 1 Limit switch, 1 Push activation button and 1 LED. - Experience in designing insulation for medical devices is a must - Understanding of safety requirements and regulations for medical device insulation Please note that as my machine is at the production stage, the deliverable should be ready for immediate implementation into the manufacturing process. Skills and Experience: - Proficiency with insulation drawing for medical devices - Strong knowledge of I...
More Battery design. Same as before. Just new details... 7.4v 2200mAh 35C
APP AND PCB HARDWARE DESIGN Both to be delivered by the same developer. I'm seeking a proficient electronics engineer and app developer to create a PCB, software, and implement an app for a Bluetooth locator, like a simple key finder. There are many products like this already on the market at very low prices. PCB must be small, alarm very loud and power consumption low. Bluetooth should automatically connect to the phone. PCB should power on when movement is detected and remain on for a period of time, set within the app. A tilt/vibration sensor detects when the PCB moves and turns on the power. Key features of the Bluetooth device must include: - Alarm sound feature - press button on phone to sound a loud alarm on PCB - Flashing light feature - light f...
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I have a 120MB JSON file with nested objects, and I am in need of a skilled professional who can convert this data into a CSV format. Specifically, I require the following: - The nested JSON objects should be flattened into single columns in the CSV. - The column headers in the...flattened into single columns in the CSV. - The column headers in the CSV should match the keys in the JSON file. The ideal candidate for this job should have: - Proficiency in handling JSON and CSV data structures. - Experience in working with nested JSON objects and flattening them. - Ability to accurately map JSON keys to CSV column headers. If you've successfully converted complex JSON files into CSVs before and you're confident in your ability to deliver clean, well-structure...
I'm seeking an electrical engineer skilled in circuit design for consumer electronics. I want to design the schematic for a buck converter based on the Integrated circuit i chosed.
...seeking a skilled freelancer to help me connect them for a home automation project. Key Responsibilities: - Implement a system that can control lighting, monitor temperature and provide security surveillance - Ensure the system can be powered using solar, wind, battery and be connected to the internet. The ideal candidate should have experience in: - Arduino and BBC Micro:bit programming - Home Automation projects - Solar and wind energy integration - Internet of Things (IoT) connectivity - Strong understanding of security surveillance systems Your role will involve setting up a reliable, efficient and user-friendly home automation system. The ability to integrate multiple power sources and ensure the system is internet-connected is important. My goal is ...
...need to make sure that the app is robust and capable of preventing unauthorized shutdowns of the device. - Provide customers with quick settings: The app should also have a user-friendly, accessible quick settings menu. This should include battery status, Wi-Fi settings, Bluetooth settings - essentially, everything that can be considered essential for quick and easy access. Ideal skills and experience for this job include: - Proficiency in Android app development - Experience with anti-theft features in apps - Strong UI/UX design skills - Knowledge of mobile device security best practices - Ability to create a user-friendly quick settings menu The project is at an advanced stage and we need someone who can quickly understand the existing codebase and make the nece...
I'm seeking a skilled professional to help me design a unique watch that will include a date, time, and moon phase display. The watch should be designed to run on a battery-powered system, and the display should be either a paper or LCD screen. Key requirements: - **Display:** The watch should feature a paper or LCD display that can show the date, time, and moon phase. The size of the display will be determined by the type of screen you select; please consider the optimal size for viewing these details. - **Power Source:** The watch should operate solely on battery power. - **Moon Phase Feature:** One of the key features of the watch is the moon phase display. This should be accurate and easy to see. Ideal Skills and Experience: - Previous expe...
...knowledgeable Arduino and IoT expert to create a sophisticated system for collecting data on water flow. Key functionalities required: - Pulse input data collection, specifically for monitoring water flow. - Understanding of Deep Sleep Mode to save Battery. - Data handling capabilities to efficiently send this information straight to the cloud system. The ideal freelancer for this project must demonstrate vast experience with Arduino programming, IoT systems, and data management. Familiarity with cloud technologies will be a significant plus. Ability to create a robust system capable of handling potential fluctuations in water flow is necessary. The chosen developer will be tasked with not just simple data gathering, but also with transferri...
I am aiming to have a pi zero programmed to read voltage levels from a 12-volt battery bank. The trigger to start the generator should be a low voltage condition. The purpose of this project is to remotely start the generator, with a focus on maintaining efficiency and practicality through a direct physical connection. Key objectives include: - Programming the pi zero to accurately gauge low voltage conditions - Enabling the generator to automatically power up in case of a drop in voltage. - Continuing the generator input even after the voltage returns to normal, with this feature designed to maintain a steady and reliable power supply. Ideal Freelancer Skills: - In-depth understanding of Raspberry Pi Zero programming for ...
Olá, tenho um sistema simples de gestão feito em PHP com BD em MySQL, gostaria de converter esse BD para trabalhar de forma Multi Tenant (varias empresas no mesmo banco de dados em uma unica instalação), e tambem criar um painel administrativo para ativar e desativar essas empresas.
I'm seeking a skilled PCB circuit designer to create a digital circuit f. The primary function of the circuit is PWM Motor Speed Control Key requirements: Input supply voltage: DC 2.5V-25V The maximum output power: 350W The maximum continuous output current :15A The overload and short circuit protecting current is 25A PWM frequency: 25-30kHz Duty Cycle adjustable: 0-100% The operation environment temperature:-20℃-40℃ Ideal freelancer would have: - Proven experience in digital PCB circuit design - Strong knowledge of signal amplification principles - Familiarity with radio technology and its requirements - Ability to optimize circuits for low gain
I'm in need of a web designer/developer to help make some important improvements to my website. We need images added. clickable links added to bring them to a shopping card. Clean up content on headers and other navigaion organization. website address: 1. Add the content we give you to the AED battery page 2. Add content we give you to the AED pad page 3. Create an AED accessories page. 4. Make all items "clickable" and avaiable for purchase so they can be added to shopping cart. 5. Other details will be shared as we discuss the project in greater detail. - I'm keen on enhancing the overall navigation and user experience of the site. This involves improving its ease of use for visitors. I believe a smooth u...
To create a precise 3D model of a small-sized charging case for the AirPods Pro 2 in Blender, here's a detailed plan based on your specifications. Specifications Recap: PCB and Battery Dimensions: 33 x 40 x 10 mm AirPods Pro 2 Dimensions: Height (H): 30.9 mm Width (W): 21.8 mm Depth (D): 24.0 mm Design Requirements: The case should connect to the top and be formed like a butterfly. The two circular charging metals at the bottom should be positioned to the left and right. The part of the AirPods Pro 2 that goes into the ears should stick up 15 mm above the case. Steps to Create the 3D Model in Blender: Set Up Blender: Open Blender and delete the default cube. Model the Charging Case: Create the Main Body: Press Shift + A to add a new mesh, s...
I need a technical expert skilled in Raspberry Pi integrations to create a display of GPS coordinates, IMU data, and set the frequency for a TBS satellite receiver on a 7inch LCD screen. The components for this project are: - GPS module - IMU module - TBS satellite receiver The LCD display should show GPS coordinates and IMU data in real-time. It also needs to set the frequency for the TBS satellite receiver. The Raspberry Pi setup will be powered by a battery, so considering power consumption in the build is important. Ideal skills for this job would include: - Experience with Raspberry Pi integrations - Familiarity with GPS modules and IMU modules - Knowledge of frequencies for TBS satellite receivers - Proficient in power management for computer systems, parti...
Re-Design and Add to our Product Labels (See Attached Examples). Use Different Golf Cart Pictures And/Or Colors To Differentiate Between The Different Models. Each Label Will measure 5 Inch (127MM) Height x 8 Inch (203MM) Width. Key Points For Each Label Are: CanLiFe Lithium Golf Cart Battery * A Single Drop In CanLiFe Lithium Battery Replaces An Entire Set Of Conventional Lead Acid Batteries & Can Operate A Stock Golfcart In Any Terrain. * Assembled In Canada * Backed By A 6 Year Limited Warranty * Estimated Range And Capacity To Be Displayed Prominently * Bluetooth Enabled - Monitor State Of Charge From Your Phone Total of 12 Labels to be created: Front Plaques: CanLiFe Lithium Golf Cart Batteries 36 Volt 56 Amp Hour (2.07 Kilowatt)...
I need an electronic hydrometer to measure the specific gravity of lead acid batteries. This will serve as a crucial tool to check the health of various batteries in real-time, ensuring they're operating effectively and do not pose a risk of failure due to overcharging or undercharging. Key Features: - The hydrometer should have a standard accuracy of ±0.01. This level of precision is essential to correctly assess the battery health and predict any potential issues. - The data collected from the hydrometer needs to be available through a web interface. This online access will allow me to monitor multiple batteries from a central location, offering more convenience and control. Ideal Skills and Experience: - Experience in design...
...electrical, solar, battery, and EV charger business site, and I'm looking for an experienced web developer to update the site using Bluehost and WordPress. The job will involve the following: - Updating Content & Photos: The site's content and images need to be refreshed to reflect my business's current offerings. - Redesigning Layout: I want the website to have a fresh, modern look that aligns with the services I provide. - Adding New Features: I'm open to suggestions here. A few ideas could be online appointment booking system, product catalog, or live chat support. Additionally, there are a few key areas where I'm seeking recommendations: - SEO Enhancements: The site should be optimized for search engine...
I need help migrating my Joomla-based website, which currently features a Currency Converter, to a new hosting server. Key Requirements: - Migrate the entire website (including the Currency Converter feature) from the existing server to a new one. - Ensure that the Currency Converter functionality remains intact and fully operational post-migration. Ideal Skills and Experience: - Proficiency in Joomla, PHP, and MySQL. - Prior experience with migrating websites, particularly those with dynamic features like Currency Converters, would be beneficial. - Strong attention to detail to ensure all components of the website are correctly transferred and operational.
I am looking for an expert to build a text-to-speech converter specifically for the Hindi language. This project doesn't require different voice options for males and females. What the project entails: - Hindi language support only (written and spoken) - Text-to-speech functionality with a female voice (“Girl Voice”) Ideal skills for this job: - Experience in voice recognition technology - Fluency in Hindi language - Previous work with text-to-speech converters.
Adjust 5 - 12 v dc with digital potentiometer and RF module . Simple project . Microcontroller based
...freelancer with intermediate Matlab skills to help optimize the energy efficiency of a battery system for renewable energy applications. Key Project Requirements: - Optimize battery system for energy efficiency: The primary focus of this project is to ensure that our battery system operates with maximum energy efficiency. This involves assessing current battery performance and implementing improvements in its energy consumption. Ideal Candidate: - Intermediate Matlab Proficiency: The perfect candidate for this project should be proficient with Matlab, having experience in battery system optimization. Previous work in the field of renewable energy systems would be a bonus. The goal of this project is to enhance the energy efficie...
I'm in need of a skilled electronic circuit and hardware engineer to help me with the design and selection of components for a project. The project involves the creation of a power supply, an analog digital converter, and a relay. Key Responsibilities: - Circuit design: I need help with creating the circuit for the mentioned components. This includes ensuring the circuit is efficient and functions as intended. - Component selection: I'll require assistance in selecting the right components for the circuit. It's crucial to choose components that are of high quality and fit the project's requirements. The ideal candidate for this job should have a solid background in electronic engineering, particularly in circuit design and component selection. Ex...
...Spice expert to assist with the design and simulation of a half-bridge circuit to drive an ultrasonic cleaner load, 60W, 39kHz, and 10R impedance. I have an LT spice model that needs to be updated to meet the requirement. The floating side needs to show a square wave and the output to the load needs to be a sinewave. The main requirement is to update the values of the discrete component and use a much better MOSFET to meet the required output of 600V AC, 0.5A, 39kHz Responsibilities: - Improve the LT Spice model for the half-bridge circuit (no rectifier needed), Output is AC and not DC - Conduct detailed simulations to analyze performance - Optimize circuit design based on simulation results The MOSFET p...
I'm aiming to create a mobile dog wash self service that will target Dog Parks and mobile pet grooming businesses. The main goal for this project is to design a functional, visually appealing, and practical dog wash trailer that can be operated as a stand-alone business. Key Requirements: - I want the trailer to be equipped with high-quality dog grooming equipment, Which I know what I am using. The design should be such that it can accommodate multiple dog's needs. - A proper water supply and drainage system is a must, ensuring efficient water usage and waste management a storage tank both clean a dirty. - The trailer should have enough storage space for a large battery-powered solar on top invertor siding that comes off during the summer and glass wa...
I have a list of 54 URLs, and I need someone to grab 2 images from each of them, convert them to .jpg and save them to a folder named 'Images'. Key Requirements: - Grab 2 images from each of the 54 provided URLs (all similar to below URL). 108 images in total. - Example URL is - Grab the biggest version of the image from lines 6613 and 6667 of page source code - Convert all grabbed images to .jpg from .webp - Save them to a folder named 'LC Images' - The images should be saved in the original size, with no resizing necessary. - See attached screenshot
I need a command-line program that can convert .mpz files to .xlsx files. The program should be written in Python. If anyone can do it, please send me the message. Key Requirements: - Input: The program should take a .mpz file (protected password) as input. - Output: The extracted files should be converted to .xlsx format. - Handling: The program should be able to handle files up to 200mb in size. Skills/Experience Required: - Proficient in Python programming - Experience with file handling and conversion Note: A graphical user interface is not required, the program should be command-line only.
I'm looking for a PhoneGap plugin that will work on both Android and iOS to handle WebSocket connections and manage the receipt of notifications. We need a PhoneGap/Cordova plugin for both Android and iOS platforms that enables our mobile application to connect to a WebSocket server and handle notifications efficiently. The plugin must support the following functionalities: Key Features: 1. WebSocket Connection: - Establish a connection to a specified WebSocket server. - Maintain the connection and handle reconnections as necessary. 2. Receive Notifications: - Listen for incoming messages/notifications from the WebSocket server. - Process the incoming messages and trigger a push notification on the device. 3. Push Notifications: - Displ...
I'm in need of a skilled circuit board designer that can create the and design the Greber file for me, I need to send the files to the manufacturing compony. My project contains few components only. SAM D11C 14-pin chip, 3 LEDS, Battery holder, and a reset switch. The "j2" pads are for programming the chip, Gnd, power, and clock. The 2 antennas traces are connected to analog pins A2 and A4. LEDs are connected to digital pins 24,25,31. the reset button to RST pin of course. For the 4 programming pads. Gnd and Power goes to Gnd and VDD pins in the chip, For the clock, I'm not shire which pins. layout size : 10 cm by 5.398 cm
...raw sensor to removal of noise & unwanted signal Algorithm / code for Digital Filter low bandwidth Real time Sensor Signals 1. Analogue Raw data acquisition in real time at 1000 samples per second in 24 bit precision 2. Raw data signal bandwidth /frequencies restricted to less then 1000 hz by hardware RC anti aliasing filter to avoid aliasing 3. Following Digital in sequence to be applied to raw signal . a. low pass filter 0-170 hzs ( to remove high frequency random / white noise b. High pass filter 1 hz to 400 hz (to remove low frequency dur DC signal coupling ) c. Very steep(narrow band) notch filter at 50 hz / 60 hz to remove power line interference a & b can be combined as band pass filter if po...
As part of this project, I need assistance in performing the following tasks: - Writing VHDL code - Designing FPGA circuits, specifically for Xilinx FPGA The goal is to achieve PWM via VHDL and PS to PL UART communication in the FPGA circuit design. It would be advantageous if you have a strong background in VHDL, FPGA circuit design and specific experience with Xilinx FPGA. Additionally, understanding of PWM and UART communication would be beneficial. Estoy buscando un ingeniero FPGAs y firmware para q haga un pequeño proyecto para hacerlo correr en una tarjeta de desarrollo Pynq-Z2 con el Sw Vivado. Se trata de implementar un PWM de valor de entrada variable, esto en VHDL para cargarlo en la PL de la Zynq. Se trataría de lo siguiente; a través de...
I'm looking to sell a residential solar photovoltaic (PV) system that stands out for its energy storage capabilities and off-grid independence. The estimated space for installation is a medium-sized residence (1,000 - 2,000 sq ft). Ideal skills include: - Expertise in solar panel design and installation - Knowledge of battery energy storage systems - Understanding of off-grid solar systems - Experience with residential projects - Ability to estimate solar power needs based on space size Offer your skills to make this solar PV system stand out in the residential market.
I require a bespoke drive thru simulator application that will function on Windows. This app will assess...thru simulator application that will function on Windows. This app will assess the performance of a headset in a realistic 4 lane drive thru environment. It should have the ability to autonomously run overnight, connected to the headset. Necessary tests include various factors, such as: - Audio quality - Connectivity - Battery life The system should provide comprehensive reports concerning any faults or failures with the headset based on the tests. Experience in acoustic engineering, application development, and system testing is crucial for this project. Real-world drive thru scenarios must be accurately simulated to ensure real-life performance of the h...
I am looking for a Professional, Stylish and Modern logo for our Brand "JollyDesk". We are seeking a talented designer to participate in a logo design contest for our esteemed brand that focuses on Products related to ergonomic and stylish office solutions. The logo should exude a sleek, professional, and stylish aesthetic. The Logo should emphasize on comfort, Productivity and functionality The logo should convey a sense of relaxation, peace, and tranquility. It should also represent a professional and organized environment. The logo could incorporate elements such as comfortable seating, soft colors, and clean lines to convey a sense of comfort and efficiency. Consider incorporating elements that symbolize support, stability, and ease of use, while also pro...
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I'm seeking an experienced developer to create an online script that can automate the conversion of CSV files. Script must be browser based and linux based. No preference on programming language. Source file will need to be uploaded to CSV converter, and script will sort data and rename columns based of pre-existing requirements. Once conversion is finished, download link generated to download updated CSV.
tenho um trabalho com 40 paginas, grande parte em figuras e tabelas que preciso converter de word para latex...já tenho um modelo da ufpr.
...freelancer with intermediate Matlab skills to help optimize the energy efficiency of a battery system for renewable energy applications. Key Project Requirements: - Optimize battery system for energy efficiency: The primary focus of this project is to ensure that our battery system operates with maximum energy efficiency. This involves assessing current battery performance and implementing improvements in its energy consumption. Ideal Candidate: - Intermediate Matlab Proficiency: The perfect candidate for this project should be proficient with Matlab, having experience in battery system optimization. Previous work in the field of renewable energy systems would be a bonus. The goal of this project is to enhance the energy efficie...
