Lithium ion battery charging circuit designJobb
I'm looking for a detailed comparison between Trainman Lanterns using disposable batteries and their rechargeable counterparts. Key Criteria: - Price: Analyzing cost-effectiveness between the two battery types. - Battery Life: Assessing longevity and performance of both options. Ideal candidates for this project should have a strong background in electronics and economics. Proficiency in data analysis and comparison is crucial.
... Xray-core (V2ray core): The app should have two versions: Free Version: Supported by Google Ads for monetization. VIP Version: Paid subscription model with premium features and an ad-free experience. The developer will handle the entire development lifecycle, excluding backend setup, including API integration, UI/UX design, testing, and app store submission. Flutter or React Native is preferred for development to ensure code reusability and consistency across platforms. Project Requirements Core Features Server Connectivity: Use the Server API: to fetch server configurations. Enable users to select servers based on performance metrics (e.g., latency, load). User Authentication:
I'm looking for an experienced Arduino programmer and circuit designer to build a simple circuit that can send readings from two fuel optical sensors over the longest range radio available. Key Requirements: - located in Great Britain - Knowledge in Arduino programming and circuit design. - Experience with fuel optical sensors preferred. - Proficient in implementing long-range radio communication, ideally LoRa. - Ability to design a battery-powered circuit. The circuit should take readings from the two sensors, which output 5V when in air and a neutral 3 wire, and send these readings over the radio. The circuit will be powered by a battery.
...revealing a custom GUI to input queries and access hidden features. Custom Input System: The numeric keypad will allow dual functionality, with specific key combinations (e.g., pressing M+ and 7 together for "/") to input characters discreetly. Stealth Design: The device should resemble a typical calculator, with hidden ports (microSD, nanoSIM, and microUSB) accessible only after removing a back panel. Battery Optimization: A 1500mAh battery should support at least 8 hours of continuous operation, with charging via microUSB/regular AAA battery. I am basing this project on another project, where the regular price of the calculator was about USD 200, which is probably half the cost of the components, but I am asking for a prototype, so please f...
I'm in need of a logo for my upcoming battery brand. The logo needs to be electrifying and reflect the essence of the brand. Key Requirements: - A minimalistic yet modern logo - Incorporation of elements like a lightning bolt, a battery icon, and energy waves - The use of a blue and white color scheme In addition to the logo, I will also need a design for a visiting card. Ideal Skills: - Graphic Design - Logo Design - Business Card Design Post initial designs, I would also need assistance on a periodic basis for social media posts aimed at brand awareness. Social Media Design: - Must align with the visual identity of the brand Ideal Skills: - Social Media Design - Graphic Design - Understanding of Brand Awareness ...
Output of rectagular signal of 0-40Volts, up to 15Amps. The output signal should be variable in amplitude and also be either unipolar (0-40 Volt, adjustable e.g. from 0 up to 0-40Volt) or bipolar (+/- 20 volt adjustable from 0 to +/- 20 volt), by means of a switch. Will drive a coil of 17mH or 34mH (thick wire on a big, 60cm ...frequency: 0 (off) - 50Hz The control at this stage can be potentiometers, but in the near future will be controled by an MCU, so control signal should be of low voltage (e.g. 0-5 volt) There should also be a protection of the output if there is a shortcut. Based on SG3525 is a good idea. Since the distance is a bit of a problem to exchange ciruits and parts, the circuit and BOM is good enough while showing the good operation of the circuit on a v...
...application. I want to incorporate features related to cryptocurrency pairs prices from Binance and Bybit. The app's profit calculator needs to be adjusted in accordance with these new crypto assets. Additionally, the app needs debugging to eliminate errors and decrease battery consumption. Functional Upgrades: - Integrate cryptocurrency pairs prices from Binance and Bybit. - Adjust the profit calculator for new crypto assets. Bug Fixes & Performance Improvements: - Debugging to remove errors. - Optimize the app to reduce battery consumption. Price Alerts: - Implement price alerts for cryptocurrency pairs. Ideal candidates for this project should have experience with Forex and cryptocurrency applications, as well as proficiency in debugging and performance o...
...speaker and a kinetic battery that charges when shaken. When the shell is brought close to the ear, it emits a soft, preloaded melody inspired by Dalmatian traditions, ocean sounds, or nature. Key Product Elements: 1. Shell Design: Inspired by real Adriatic Sea shells (e.g., pen shells or oysters). Made using biodegradable plastic or resin with intricate details. The external surface can feature personalized embossed patterns, such as the name of a city (e.g., Dubrovnik, Split) or regional symbols. 2. Speaker: A mini digital speaker integrated inside the shell. Plays a gentle melody when close to the ear, mimicking the "song of the sea." Melodies include traditional Dalmatian songs, wave sounds, seagulls, or sea breezes. 3. Kinetic Charging Battery...
I'm looking for a professional with extensive experience in 3D design for manufacturing. The project is to create a 3D design for a metal rectangular Lithium battery box. Key Project Details: - Shape: The battery box needs to be designed in a rectangular shape. - Material: The box should be designed for manufacturing in metal. - Dimensions: I have exact dimensions for the box that will be provided upon project initiation. Ideal Skills and Experience: - Proficiency in CAD software or any other 3D design software. - Prior experience in designing metal boxes or battery boxes will be beneficial. - Ability to understand and execute precise dimensions. Please include examples of relevant past work in your bid. Thank you!
I am seeking a talented Web Developer to assist in completing my career guidance website project. The UI design has been created in Figma, and the Machine Learning models have been developed - all resources will be provided. Your role will be to integrate three pre-built Machine Learning models into the site, develop and finalize the website according to the provided UI interface and models, and ensure the entire project runs smoothly and offers a user-friendly experience. Ideal candidates should be proficient in both front-end and back-end web development, have experience integrating Machine Learning models into web applications, and possess a strong understanding of responsive design and user experience.
I'm in need of a professional to design a breakout board for the AD5933 chip. The primary application for this chip will be impedance measurement, specifically up to 100 kHz. This project requires a deep understanding of the AD5933 chip, as well as the principles of impedance measurement. Key requirements: - Design a breakout board for the AD5933 chip - Ensure the board is compatible with I2C for communication Ideal candidates will have: - Prior experience with the AD5933 chip - A strong background in electrical engineering and circuit design - Experience designing breakout boards - Proficiency in I2C communication interface Please include examples of similar projects you've completed in your bid.
I'm looking for a skilled developer to replicate my current web app for use in both WeChat and Alipay Miniapps. The existing web app is built in ReactJS and its key features include: - 'Rent Battery' button - Payment integration via WeChat Pay / Alipay - User history tracking - Location mapping via API (using JSON lat long) - Feedback submission via camera or photos sent through API - Authentication via Google and Apple ID (to be replaced with WeChat and Alipay ID) The goal is to have users return with the same profile, which is crucial for this project. No new features are needed for the WeChat mini-app, just a straight replication of the current web app. At this moment, I do not have the WeChat Mini Program developer account set up. If you have experience in this...
...AI/machine learning; airless tires; AR/VR; autonomous vehicles; blockchain; cloaking and stealth; cloud computing; Crispr; crowdfunding; cryogenic treatment; cryptocurrency; cultured meat; DNA-based analysis; drone technology; electric vehicles; encryption; exoskeletons; face recognition; fintech; foldable screens; gesture recognition; graphene; holography; internet-of-things; laser; LED lighting; lithium-ion batteries; magnesium batteries; m-commerce; mRNA technology; nanoparticles; nanotubes; neural interfacing; nuclear fusion; plasma propulsion; quantum computing; RFID; robotics; satellite internet constellation; smart speakers/virtual assistants; smartphones; smartwatch; solar panels; spray-on fabric; supersonic flying; tablets; virtual teams; wireless sensors. Altern...
...looking for someone to design and develop a new flip phone for me. The phone should be a flip design with an emphasis on durability, compact size and aesthetics. It should also be designed to be hardware and software friendly, with no internet or video capabilities. Key areas to focus on: - A long-lasting battery. This is a crucial feature for this phone. - A high-quality keypad. The phone should be easy to use and type on. - A robust hinge mechanism. This will ensure the durability of the phone and its flip mechanism. The operating system for the phone should be a version of Android without any internet features. This will make the phone simple to use, yet still modern and familiar. Ideal skills for this job would be experience in hardware and software d...
I need a circuit board designed primarily for signal processing. This board will be handling mixed signals, specifically processing sensor signals. Key Requirements: - Design a circuit board capable of mixed-signal processing with a focus on sensor signals. - Ensure the board is optimized for signal processing tasks. - Provide schematics and design files. Ideal Skills and Experience: - Expertise in circuit board design. - Proficient in working with mixed-signal and sensor processing. - Strong background in signal processing.
I'm in need of a professional PCB designer with experience in designing PCBs for consumer electr...Requirements: Nr. 1 : Size and shape constraint. Size: very small, should fit within a 2 by 2 cm square, 1cm height. Shape: hexagon. Layers: 4 Nr. 2 : Specific components: microphone&speaker, esim, to enable calls. Bms incorporated for lipo battery. Nr. 3 : Careful placement of components, intensive power management system, should fit size constraints. Ideal Skills and Experience: - Extensive knowledge in PCB design for consumer electronics. - Proven experience in designing PCBs for power management and wireless communication. - Ability to design for battery power sources with a focus on efficiency. -Prior experience in working with an esim, setting up ...
...using a Radxa Zero 2 Pro. This isn't just a simple pet, but a companion that can respond to voice commands, touch interactions and movement responses. Your role will include: - Connecting the Radxa Zero 2 Pro to various components including a 3W speaker, a Radxa camera, a 2.1 inch display, a 6 mic array housed within a 2 inch circle, a 360 degree stepper motor, and a wireless charger. A 2000mAh battery will be used for power. - Programming the pet to communicate via visual displays and sounds. Ideal skills for this project include: - Experience with Radxa hardware - Proficiency in programming interactive systems - Knowledge of audio-visual communication systems - Skills in working with small scale, intricate projects This project is perfect for someone who is passionate...
...Destructible objects, NPCs with side quests, and interactive elements (e.g., climbable walls or jump pads). 2. Dynamic Combat System Combat Mechanics: Smooth melee and ranged attacks. Abilities tied to characters’ skill sets (e.g., fire blasts, lightning strikes, transformations). Combos and advanced mechanics like counters and dodging. Ultimate Moves: Unique, cinematic attacks triggered after charging a special meter. Example: Goku’s Spirit Bomb or Luffy’s Gear Fourth attack. Visual Effects: High-quality particle effects and animations to make combat visually appealing. 3. Anime Characters and Abilities Character Unlocks: Players unlock characters by completing quests, defeating bosses, or using the gacha system. Ability Customization: Players can mix and match...
Project Details I'm in need of a compact, double-layer PCB designed for a digital circuit. The project involves creating a Gerber file that is ready for printing, accommodating the given circuit diagram. The PCB should be small and compact, suitable for accommodating a digital circuit. The 2 ESP32, SIM800L, MAX 485 and ADS1115 will be mounted on a 2.54 mm pin female single-row header strip. All connectors will use 5 mm PCB terminals with standard 0.1” (2.54 mm) spacing through holes. Components Ref: ESP32 38Pin Development Board: Hi Link HLK-PM01 5V/10W: 2.54mm Pin Female Single Row Header Strip:
I am looking to create a digital airsoft target see attached documents. I will need all files and BOM in order to have whatever PCB we create manufactured and assembled.
Short brief: I need a 3D-printable vehicle that travels on a rail for a trade show display. The vehicle's outer shell design will be provided, but it needs to have a functional interior with a motor and wheels. Read whole brief for full scope. Ideal skills for this project include: - Experience with mechatronics design - Experience with building fully functional prototypes from design - Proficiency in CAD & 3D modeling software - Experience with designing for 3D printing - Experienced with electronics - Knowledge of vehicle mechanics In detail below: (see attachments for quick visual overview) Develoment of 3D-printable Vehicle traveling on rail for visual display I have a project where a small vehicle will travel on a rail. This serves no practical ...
I'm looking for a skilled Python game developer to create a game-based user interface (UI) for an off-grid solar wind battery generator system. I am just looking for the UI component at this time, please look at the attached pdf .... the display is 800X800 but is round :-) Key Responsibilities: - Real-time Monitoring: The UI must allow for the real-time monitoring and visualization of various system parameters. - Energy Metrics: The specific parameters to be monitored include energy production, energy consumption, and battery status. Ideal Candidate: - Proficiency in Python and game development, particularly with the Pygame library. - Prior experience designing UIs for renewable energy systems is a plus. - Skills in creating engaging, interactive game-based interfac...
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I need a professional to install a solar battery in my garage, with the purpose of providing backup power. The battery will be connected to my existing solar panels, which have a capacity of 5-10 kW. Key Requirements: - Expertise in solar battery installation - Experience working with 5-10 kW solar panel systems - Ability to ensure the system provides reliable backup power Ideal Skills: - Knowledge of solar energy systems - Electrical engineering background - Problem-solving skills to address potential installation challenges I'm looking for a freelancer who can complete this project efficiently and effectively. Please provide examples of similar projects you've completed. Knowledge of E48-2.0 ABS alliance batteries. Have 10 batteries but pl...
I need a circuit board designed and built that uses an ESP32 to drive a large number of LEDs (SMD, 300-500). The LEDs should be arranged to represent a detailed map that will be provided. Key Requirements: - Design and construct a visually appealing circuit board (as it may be directly exposed to end user) - Use an ESP32 to control a large number of LEDs (you will have to explain how you plan on doing this) - Arrange the LEDs according to a detailed city map which I will provide on the circuit board. Ideal Skills and Experience: - Electronics and circuit board design - Proficiency with ESP32 - Experience with LED projects - Design skills for creating an aesthetically pleasing product
I am in need of an experienced electrical engineer specializing in circuit design. The project involves designing a circuit for an unspecified application, so versatility and creativity are key. Ideal candidates should have: - Extensive experience in circuit design - Ability to work on various applications, from consumer electronics to industrial machinery - Innovative thinking for creating efficient and effective designs
...payments for customer transactions, we will make our revenue from charging businesses a fee to advertise their happy hour offerings on this new app. If you have another view point on this or worked on a similar project and have another recommendation, we want to hear from you. We want to use this app to simply showcase existing happy hour offers at advertised times, at participating locations and keeping the relationship simple. Charging business a $x to advertise/showcase happy hour offers. Regular customers can register for free, however we require some form of verifying that only adults can use the application because we will be advertising adult businesses (vape, smoke lounges, night clubs, etc). We will be Charging influencers $x for access to the influenc...
We are seeking a skilled engineer to design and develop a 30 KW DC fast charger based on the Infineon /OnSemi/ Microchip SiC module reference design.. The inverter will need to handle power ratings between 10 kW to 50 kW. Ideal Skills & Experience: - Background in power electronics - Proven track record in inverter/fast charger design - Experience in industrial applications and CANBus protocol - Ability to design for power ratings between 10 kW to 50 kW We are seeking a skilled engineer to design and develop a 30 KW DC fast charger based on the Infineon SiC module reference design. The ideal candidate will have experience in power electronics and familiarity with high-efficiency charging technologies. Your expertise will be crucial in...
I'm in need of a basic precision, manually controlled, adjustable current regulation circuit that can handle up to 15A at 170VDC. The primary application for this circuit will be within power supply systems. Key Requirements: - The circuit should be able to adjust the current from 0 to 15A. - It should be designed for use in power supply systems. - The level of precision required for current regulation is basic. - The control for adjusting the current should be manual or digital. Ideal Skills: - Circuit design and development. - Experience with power supply systems. - Understanding of basic precision regulation.
I am looking for an animated company logo. In Jan 2021 you did my Impulse Lithium Logo which was awesome
...an engaging and interactive Social Networking mobile application, specifically for the Android platform. Ideal Skills and Experience: - Proficiency in Android app development - Strong understanding of social networking app features and user interface - Experience with integrating social sharing features - Knowledge of mobile app security measures - Ability to optimize app for performance and battery life - Good communication skills to understand project requirements and provide updates. The app should include: - User profiles and customizable settings - Friend requests and following features - Chat functionality - Post sharing capabilities (text, images, videos) - Notification system for interactions - Search functionality for users and content - Privacy settings for user co...
...an engaging and interactive Social Networking mobile application, specifically for the Android platform. Ideal Skills and Experience: - Proficiency in Android app development - Strong understanding of social networking app features and user interface - Experience with integrating social sharing features - Knowledge of mobile app security measures - Ability to optimize app for performance and battery life - Good communication skills to understand project requirements and provide updates. The app should include: - User profiles and customizable settings - Friend requests and following features - Chat functionality - Post sharing capabilities (text, images, videos) - Notification system for interactions - Search functionality for users and content - Privacy settings for user co...
...an engaging and interactive Social Networking mobile application, specifically for the Android platform. Ideal Skills and Experience: - Proficiency in Android app development - Strong understanding of social networking app features and user interface - Experience with integrating social sharing features - Knowledge of mobile app security measures - Ability to optimize app for performance and battery life - Good communication skills to understand project requirements and provide updates. The app should include: - User profiles and customizable settings - Friend requests and following features - Chat functionality - Post sharing capabilities (text, images, videos) - Notification system for interactions - Search functionality for users and content - Privacy settings for user co...
I'm in need of a seasoned FSM (Finite State Machine) Arbiter expert specializing in digital circuit design. Key Responsibilities: - Design and implement an FSM Arbiter for a digital circuit. You should have: - Extensive experience in digital circuit design and FSM Arbiter. - A deep understanding of the design and implementation of FSM Arbiter. Deadline: 1 days
...Showcasing the product's key features: recharge mechanism, frothing speed for various beverages, and intelligent motor - Creating a comparison between a battery-operated and a rechargeable model, with an emphasis on portability and space-saving attributes - Detailing the product's motor - Designing similar images for Black, White & Silver versions of the product. I will provide existing product images in JPEG format for reference. Ideal Skills: - Proficiency in graphic design software, preferably Photoshop or equivalent - Experience with product image creation for e-commerce platforms, particularly Amazon - Strong understanding of modern design aesthetics - Ability to create engaging and informative product imagery Please provide a cost-effective b...
I am seeking an experienced SAP BRIM functional consultant with over 5 years of expertise specifically in SAP Convergent Charging and Convergent Invoicing. The primary purpose of this engagement is to provide necessary support . We need assistance for Realtime examples with project explanation for interview preparation for implementation and support project explanation with support ticket explanation. we will pay hourly payment.
We are seeking a skilled native Apple (Sw...devices. Key Responsibilities: - Develop Apple Watch and Android Watch applications for mobile app built on react native. - Implement real-time heart rate monitoring functionality on wearable devices. - Design algorithms to detect anomalies in heart rate readings. Integrate emergency SOS functionality into the wearable applications. - Collaborate closely with the existing mobile app development team to ensure seamless integration with the main application. - Conduct thorough testing and debugging to ensure the reliability and performance of the wearable applications. - Optimize applications for battery efficiency and performance on wearable devices. - Stay updated with the latest trends and advancements in wearable technology and h...
I'm seeking...efficiency and safety within harsh furnace environments. The rover will perform inspections, monitor conditions, and capture critical data to support maintenance, quality control, and process optimization. Key requirements include robust mobility with self-balancing legs, 360-degree movable tires, and the capability to cross 6-8 inch hurdles. It should feature a durable, heat-resistant design, a high-capacity battery for 5-6 hours of operation, advanced sensors for obstacle detection, and gimbal-managed cameras for visual and endoscopic inspections. The system must support wireless remote control, real-time image transfer to servers, and a protective frame for equipment safety. If you have the expertise to bring this innovative solution to life. Place a b...
I have DXF and Python files ready to be processed on an electrical CAD. I'm looking for someone who can run the files and create the necessary 2D drawings. The specific elements that need to be included are: - Circuit diagrams - Wiring schematics - Panel layouts - A Parts list Ideal candidates for this project should have extensive experience with electrical CAD and can demonstrate a keen attention to detail. Please include examples of similar projects you have completed in your bid.
I'm looking for a flyer designed to boost sales of our residential solar and battery systems. The target audience for this flyer is homeowners, and the key message to convey is cost savings. Ideal Skills: - Graphic Design - Marketing - Copywriting - Understanding of Solar Energy Concepts Experience: - Prior experience designing sales flyers - Experience working in the renewable energy sector is a plus
I'm in need of a compact, double-layer PCB designed for a digital circuit. The project involves creating a Gerber file that is ready for printing, accommodating the given circuit diagram. The PCB should be small and compact, suitable for accommodating a digital circuit. The ESP32, SIM800L, and ADS1115 will be mounted on a 2.54 mm pin female single-row header strip. All connectors will use 5 mm PCB terminals with standard 0.1″ (2.54 mm) spacing through holes. 6 X 14 CM PCB Board - Power PCB 14 x 14 CM PCB Board ESP32 38Pin Development Board --> Hi Link HLK-PM01 5V/10W --> 2.54mm Pin Female Single Row Header Strip -->
Title: PCB Design with Gerber Files, Schematic, and BOM Description: I am looking for an experienced PCB designer to help me create a custom PCB design for my project. The design should include: Schematic Design: A clear and detailed schematic of the circuit. PCB Layout: Design the PCB layout based on the provided schematic. Gerber Files: Generation of Gerber files for manufacturing. BOM (Bill of Materials): Will be provided and open to any modifications for better performance,Provide a complete BOM with part numbers, specifications, and suppliers (e.g., Digikey, Mouser). Project Requirements: Board size: 70mmx70mm Layer count: 10 Layer Component preferences: Drill Hole Special requirements: TI Processors and components preferred Target applicat...
I need an experienced and fresher technician for on-site battery replacement in my Online UPS system. The service should be prompt, professional and ensure that the UPS is fully operational post-service. pune location
...committed to sustainability through the recycling and reuse of lithium batteries. We are looking for an experienced freelancer to design and develop a professional website that reflects our mission and values. Main Objective: Create a visually appealing, functional, and optimized website that becomes a reference in our industry. Project Requirements: Site Structure: Home Page: Introduction to the company, mission, and vision. About Us: Our story, team, and core values. Services: Explanation of our recycling and reuse solutions. Sustainability: Highlighting environmental impact and the benefits of our processes. Blog/Insights: A space to share relevant articles and news. Contact Us: Contact form with Google Maps integration. Design: Modern, clean, and profession...
...by vehicle owners, offering convenience, transparency, and quality. Key Features: Comprehensive Services: 24/7 roadside assistance. Customized vehicle health reports. Timely service reminders. Fast doorstep service. Real-time tracking of service providers. Flexible payment options. Diverse Offerings: Basic and complex vehicle services for bikes, cars, and autos. Petrol and diesel delivery. Battery replacement and vehicle scrapping services. Vehicle washes and cleaning. Routine maintenance such as oil changes, filter replacements, brake inspections, alignment, and suspension checks. Quality and Trust: Collaborations with OEMs, insurance companies, and warranty providers for seamless claims. Certified service providers and local mechanics. Regular customer reviews and feedback ...
Similar to the EV chargers one and layout, but with these details, please.
I'm in need of an expert to design a circuit for an induction heater. This heater will be specifically used for heating non-ferrous metals like brass. Key Requirements: - The induction heater circuit should be designed to handle a power output of up to 1kW. - The design should be robust enough to endure the rigors of metal heating and forging. - Experience with induction heater designs and metal forging applications would be highly advantageous. Ideal Skills: - Circuit design - Knowledge of induction heating technology - Experience in metal heating and forging applications - Understanding of non-ferrous metal properties and heating requirements.
Hey everyone I’m a video and thumbnail editor looking to add to my portfolio which is why I’m charging little to no cost DM before the chance ends
I'm i...version of the power supply - Designing a board-level version for product integration - Ensuring the AC output is suitable for plasma generation The initial laboratory version will need to meet the exact specifications of the LF-500. Safety features are crucial, with both overload and short-circuit protection required. Ideal candidates for this project should have: - Extensive experience in high voltage power supply design - Proficiency in creating laboratory-grade equipment - Capability to design board-level versions for mass production - Strong understanding of safety features in high voltage equipment - Familiarity with plasma generation equipment Please note, the frequency range and duty cycle have not been specified and would be determined based ...
