Battery charging circuitcông việc

...Arduino/raspberry pi based. You will essentially be taking the role of a subject matter expert and provide consultation. You will need to find the appropriate microcontroller and all components that’s will provide the following function: Bluetooth and Wi-Fi Python/C LCD screen(1.5-2inch) magnet sensor(able to detect a magnet swiping by like a door open/close sensor) lithium ion battery(with type c charging) alternative AA battery as power supply You will need to provide a full components solution that will allow for the development of a small electronics device that includes the above components. You will need to create a document with all components, specs of the components, and links to purchase the components. You will also need to provide documents to w...

"Reddit's Most current Offense: Making Its iOS Application Symbol Terrible as Damnation" It is not too difficult to imagine that we are seeing the demise of one of the web's number one virtual entertainment stages progressively. In the wake of charging for admittance to its Programming interface and endeavoring to crush resulting fights by means of meetings with the doltish President, Reddit has now made its iOS application symbol into a tasteless, 8-bit monster. Recently, iOS engineer Benjamin Mayo tweeted out a screen capture uncovering to the overall population that Reddit had redone its application symbol. While configuration changes are standard practice for organizations to keep their image new or potentially signal a fresh start, Reddit might have independ...

I am in need of a freelancer who can assist me with my Etap project, specifically in conducting a short circuit analysis. Requirements: - Experience in conducting short circuit analysis using Etap - Knowledge of electrical engineering principles and circuit analysis techniques Deadline: - The project must be completed by a certain date, so prompt and efficient work is necessary Circuit Quantity: - The project involves analyzing more than 10 circuits, so the freelancer must be comfortable working with a large number of circuits If you have the necessary skills and experience in Etap and circuit analysis, and can complete the project by the specified deadline, please reach out to me. Thank you!

I am in need of an expert technical review for an electronics device design. I am looking to get a thorough analysis of the design, focusing on the circuit design, user interface, ergonomics and usability, aesthetics and visual appeal, and functionality. I have specific concerns that I want to have addressed. The expert technical review should help to identify any areas of improvement in relation to those concerns. The review should also look into any potential issues with the device's design, as well as potential solutions.

...to advanced experience. This level of expertise would ensure that my chosen engineer has a solid understanding of hardware design principles, component integration, and electrical system development. You should be proficient in designing and prototyping 'system on modules', have experience with other common wireless technologies and audio systems, and possess knowledge of power management and battery integration. Additionally, familiarity with regulatory compliance and industry standards related to electronics would be beneficial. --How fast do I need it delivered?-- We will agree on a timescale that is suitable. --Will you work with a team or work independently?-- You will work with myself, since I'm the primary Product Designer for this product. It w...

I am looking for an experienced freelancer to develop a Simulink model of a 500W bi-directional isolated AC/DC converter. The input voltage range will be 100-240V from the AC side coupled with a 48V DC side from a LiFePo4 battery. No constructed PCB board is required for the simulating circuit. Additionally, the desired output power of the AC/DC converter should be 500W - 600W. The power convertor needs to be isolated using high frequency transformer (small sized) and should be able to provide AC power when Grid fails and charge battery when Grid is avaiable. Battery is expected to be around 500Wh @48V. If you believe you have the necessary skills to complete this project, I would love to hear from you. Thank you!

I have two products which I designed myself and I am producing myself. I have them online at Etsy and Ebay. I sell only very few of them per month i... Here are the products on Etsy: The first one is a stand for a Kids GPS Watch and the second one is a storage box for (rechargeable) batteries with a very compact design and first in first out feature (you always pick the oldest battery in the storage). Please make a suggestion on what you would do for 100 USD. I am focused on the German market but would ship to whole Europe, too. I am a beginner in online marketing so I think you will be able to make some big first steps :-)

A Simple circuit for FSK modulator and Demodulator need to be designed for 4.5MHz. The circuit should be simple and low power operation. The components used should be commonly available in market. Designer shall provide, schematic, simulation file, BOM, BOM cost, Simulation result.

I am in need of skilled electrical engineering assistance for a large-scale project. Specifically, I am looking for assistance with circuit design. I have a plan in mind, but I need help making it a reality. I will need an experienced electrical engineer who can quickly and accurately assess the project and actively work towards completion. The individual must be detail-oriented and able to work with tight deadlines and handle complex technical challenges. This project requires an understanding of various engineering disciplines including electronic control, design, programming, and testing. If you have the right qualifications, I’d be glad to hear from you. Thanks!

- All W3C Standards followed for website design - SSL integra...previously issued certificates - Display low seat availability based on course registrations - Database/Login for class instructors to report attendance, upload paperwork and class notes, student photos Information gathered from registrations and class paperwork is bulk uploaded to the EPA’s CDX database - On the backend, ability to add/remove/shift student(s) to alternate class dates with or without charging a fee - On the front end, ability for a customer to change/reschedule a previously booked class for free (within a grace period) or for a fee if past the grace period - Inquiry form on website for in-house group classes - Automatic student roster generation/email sent to instructors for upcoming classes the...

...assist me with designing a circuit from the ground up. The project requires expertise in software programming and It just needs to be an effective circuit, and parts list. You need not design PCB etc. Just use an off the shelf waveform generator and couple to the power circuit. Its mainly about the output circuit that will provide the power required with the control (voltage) and out capability (up to 100A/phase) it is a linear synchronous motor driver, just a basic one for initial testing. We will work on a feed back circuit later on. Just for now we just want to test the arrays (which are indicated as solenoids) to see what forces we can get. The output of the wave generator is +/- 5 volts max so we need to be able to take that signal and drive the ...

We are currently in search of a proficient Electronics Engineer with extensive expertise in network and RF technologies to support our ongoing electronics project. The circuit design comprises three distinctive components, totaling 20 elements. Notably, the PCB layout will feature exposed copper with strategically positioned stitching vias, facilitating the segregation of various functional blocks into distinct regions of the board. Ideal skills and experience for the job include: - Strong RF circuit design expertise - Proficiency in network protocol analysis - Experience in RF testing and measurement - Ability to work independently and provide technical guidance - Strong problem-solving skills and attention to detail - Excellent communication and collaboration skill...

I am looking for an expert to design and develop a trigger circuit to control an electronic device. Input signal is of minimum 40ns @ 1.96Vpp and maximum 75ns @ 29Vpp. This trigger is ac signal. I require circuit to trigger a relay for this range of input signal. The job needs to be done ASAP. If you have the skills and experience to handle this project efficiently, please get in touch.

I am looking for a freelancer who can modify a TTP223 touch sensor to add additional functionality. The specific modifications required include: - Adding a 12v to 5v regulator circuit to feed the touch sensor - Adding a pin for 12v and a pin screw I may also need help with debugging or troubleshooting the touch sensor in the future. The ideal freelancer for this job should have experience and skills in circuit design and modification, as well as troubleshooting electronic components. The project needs to be completed within a month.

Job is edit the pdf as shown in the sample image. Mostly changing color, but removing the top tube on white bike and adding battery cover. Skills and Experience: - Proficiency in Adobe Illustrator - Experience in editing vector files - Attention to detail to ensure high resolution output

I am looking for freelancers with experience in building hardware that utilizes Bluetooth Low Energy (BLE) technology. The specific hardware that I am looking to build is for transmitting data from my hardware to a Garmin watch. The custom hardware has its battery, main controller is the Texas Instrument MSP 4030 and the BLE chip is the RN4020.

Project Title: Mobile phone I am looking for a mobile phone with the following features and functionalities: - High quality camera - Long battery life - Advanced security features I will be needing additional peripherals with the mobile phone. My budget for this project is $100 - $500. Ideal Skills and Experience: - Experience in developing mobile phones with high quality cameras - Knowledge in optimizing battery life in mobile phones - Expertise in implementing advanced security features in mobile phones

...looking for an experienced engineer to design a Power Factor Correction (PFC) circuit with a post Buck Converter. The project requirements are as follows: Input Voltage Range: - The desired input voltage range for the PFC with post Buck Converter is 200-240V. Load Type: - The PFC with post Buck Converter will be powering an incandescent tube load. Output Voltage: - The desired output voltage for the PFC with post Buck Converter is 220V DC with an adjustable range of 20%. Ideal Skills and Experience: - Experience in designing PFC circuits and post Buck Converters. - Knowledge of power electronics and control systems. - Familiarity with incandescent tube loads and their requirements. - Proficiency in circuit design and simulation software. - Ability to meet project de...

... - USING STM or ATMEL controller - the mechanical body of the wheelchair already made and wghit almost 55kg . - it consist of tow battery each 12 volt connected in series. - dual dc motor each 24 volt with maximum current of 7A - THE SPEED OF THE MOTOR IS 3000 rpm and has a gear ratio of 1:10 - each dc motor contain electrical brake system . 3. Reverse Mode - The wheelchair should have a reverse mode. - This will enable easy maneuvering in tight spaces. 4- provided parts : - the mechanical part of the wheelchair already made - dc motor already available with the electric brake system requirement : - designing the controller circuit to control the movement of the wheelchair in smooth and robots manner. -the wheelchair will move according to the comma...

Manufacture Battery Monitor - Ideal Skills and Experience: - Experience in manufacturing battery monitors for various types of batteries (Lithium-ion, Lead-acid, NiMH) - Knowledge of specific features and specifications for battery monitors I am looking for a manufacturer to manufacture a product that I already have. It is a battery monitor that shows battery voltage, current, time remaining, state of charge, and temperature. In addition, it also records warnings and alerts events with a real time/date stamp. Also, cumulative lifetime amp-hours are recorded. We have the part we want to copy/manufacture.

My company is seeking a freelancer to create a comprehensive PowerPoint presentation related to battery metals. This presentation has an educational focus, and will be intended for an audience of industry professionals. The presentation should include a minimum of 11 slides, and may include more than 20 if necessary. We have all the content and slides prepared but would like help to create more engaging graphics and exhibits, perhaps with some animation of charts/slides.

...machine - Input 12 V from a car battery. - Output 12v to a small poison spray pump. - Poison control pump 12V 10 amps draw - low-cost solution without wifi or BLE As described in the video we need a device to replace the operator’s thumb on the control button for the machine. We need to be able to adjust the length of time the pump runs at a factory level – this run time will be set up before the unit is delivered to the end user. We need to have the operator with the ability to adjust the frequency the pump runs using a multi position dial. The output needs to be intermittent with the ability to adjust the duration of supply and the duration of non-supply. the circuit board needs to be mounted in an enclosure with a 5 to 7 position switch an operator

I am looking for a skilled freelancer to help me create a printed circuit board (PCB) for my project. The ideal candidate will have experience in designing and manufacturing PCBs. Requirements: - Expertise in creating PCBs using industry-standard software such as Eagle or Altium - Ability to work with special components as required - Attention to detail and a strong understanding of circuitry and electrical components - Experience in prototyping and testing PCB designs - Ability to work under tight deadlines and deliver high-quality results within 1-3 days If you have the necessary skills and experience, please submit your proposal with examples of your previous work in PCB design.

I am looking for an experienced PCB layout designer to create a 4-layer multi-layer PCB layout using Easy EDA (Std Edition). Key Requirements...to meet project deadlines PCB size is fixed and cannot be changed, however multiple PCBs can be stacked if needed. Ideal Skills and Experience: - Proven track record of successfully completing multi-layer PCB layout projects using Easy EDA (Std Edition) - Knowledge of industry standards and guidelines for PCB layout design - Experience with power electronics, motor drive, digital and analog circuit design - Familiarity with schematic capture and PCB design tools such as KiCad or Altium Designer If you are a skilled PCB layout designer with experience in multi-layer designs and proficiency in Easy EDA (Std Edition), please submit your...

I am seeking a freelancer with expertise in ESP32 based WiFi temperature sensors to develop a battery-operated sensor with a wide temperature range. The ideal candidate should have experience in designing and programming these sensors and be able to deliver a functional prototype that can measure temperatures accurately. There are no additional sensor features or integration with other devices required for this project. The developer will 1. Make schematic + BOM 2. Make PCB files 3. Test, debug final units and ship fully functional units.

FOR A GUARANTEED MESSAGE RESPOND 'I HAVE CHECKED YOUR XD' I am looking for a skilled developer to convert my XD design into a user front end and admin dashboard. Here are the details of the project: Please review the XD here: DO NOT BID IF YOU HAVE NOT LOOKED AT XD. IF YOU ARE CHARGING MORE THEN 300GBP - DONT BID. Functionality: - The user front end and admin dashboard should have intermediate functionality. - This means that they should have more features and capabilities than basic functionality, but not as advanced as the most complex options. Device Adaptation: - The XD design should only be used for a single device. - There is no need to adapt it for different devices or make it scalable. Additional Requirements:

I've purchased an inexpensive DC power regulating board, 12 V in and 0-12 V out. It has a pot you adjust for the output voltage. I want the output to slowly build from 0 to 12 volts over about 10 to 20 seconds. I decided to swap in a slow RC circuit for the pot. It does NOT work. See attached pic. I think the pot is just a variable resistor as the wiper and ground leg of the pot are connected. The board was purchased on ebay: XH-M400 for about $8. I think you would have to purchase a board and experiment with it. The result should be when you put 12 VDC to the board, the output should slowly build to 12 VDC over a 10 to 20 second time period. It does not have to be linear. I would expect it to somewhat follow the characteristics of an RC filter.

I am looking for an experienced professional to help with the design of an innovative power electronic circuit. Our team has some rough requirements that need to be refined in order to create a reliable and effective design. We are seeking someone with experience in circuit design, PCB layout, component selection, software simulation tools, hardware prototyping tools, and manufacturing and assembly tools. This individual must have knowledge of current power electronic techniques and cutting-edge technologies in order to provide a high-quality product. We need help creating a design plan that complies with our project objectives, is cost-effective, and meets safety requirements. Attention to detail and good problem solving skills will be essential for success.

...trades" in the modern technology field who can tutor me, guide me, help me with projects, do some programming for me, do some research, bounce ideas etc. on an as-needed basis. You do not need to be an EXPERT LEVEL in the following areas but you should have enough knowledge and hands-on experiences playing with them: Electronics: Arduino, Raspberry Pi, ESP32, schematic capture, circuit simulation, pcb layout, circuit design, IoT, Home Assistant, 433Mhz RF modules etc. Computer: HTML, CSS, JavaScript, Python, MQTT, C, VBA, Excel, Photoshop, video editing etc. CAD: 3D designs, 3D printing, The rate I am offering is US$10 per hour, billable in 15-minute increments because sometimes I just have few simple questions to ask. Specific projects can be agreed upon separ...

Need 06 to 07 slides of ppt on ev charging stations services provided by our company

I am looking for a freelancer to help me set up a smart switch with the Tasmota firmware. I am already familiar with the associated hardware and understand how to physically install the switch, but need help with the configuration of Tasmota. I have 4 Martin Jerry dimmers (SD01) flashed with Tasmota. I also have a Shelly RGBW2 4 channel dimmer that...configure each of 4 of the Martin Jerry dimmers to control the 4 individual channels on the Shelly independently. I want on/off and dimming functionality, as well has the ability to have more than one Martin Jerry dimmer be in control of one of the channels on the RGBW2 device in the event that I need two control points. The Martin Jerry dimmers do not need to be able to control their local dimming circuit - only control the Shelly RGBW...

I am looking for a PCB designer to create a medium-sized multi-layer circuit board with all the components, wiring, and layout desired. This PCB will not need to be physically fabricated and will have a width of anywhere from 10 to 30 centimeters. The design must meet all required standards and specifications of safety and usability. The PCB designer must have the experience and technical knowledge necessary to deliver a cutting-edge product that meets all these needs and more. It must also include and address any issues that may arise in implementing the design for its intended purpose. The finished product should also be cost-efficient and structurally sound. If you are an experienced and knowledgeable PCB designer with a keen eye for detail and a desire to help us make our pr...

the board is to control a pneumatic / solenoid impulse valve 24vdc 8w. I need to change the polarity on the valve to open and close from two PLC outputs. The board needs to accommodate 4 changeover relays with plug in connectors. Basic sketch of single relay attached , circuit is made up of four of these.

We are looking for an experienced embedded systems engineer to join our project team. The ideal candidate should have knowledge and experience in the following areas: - PCB design: The engineer should be proficient in designing printed circuit boards, including layout and component selection. - Embedded coding: Strong skills in C/C++ are required for programming microcontrollers and other embedded systems. - Sensor integration: The engineer should have experience in integrating various sensors into embedded systems. We are in need of a PCB that can measure Vibration data, Temperature data, voltage, Current, Torque/ Pressure. and RPM. Any reliable Industrial sensor can be selected. The output should come in the form of Bluetooth/WiFi. As for the microcontroller, we are open to sugg...

I am looking for a freelancer who specializes in digital circuits and can assist me with designing a circuit from the ground up. The project requires expertise in software programming and It just needs to be an effective circuit, and parts list. You need not design PCB etc. Just use an off the shelf waveform generator and couple to the power circuit. Its mainly about the output circuit that will provide the power required with the control (voltage) and out capability (up to 100A/phase) It is to drive a high power linear synchronous motor prototype.. The ideal candidate should have a strong background in electronics, electromagnetism, and circuit design. i need someone who is ready and can start asap , to be urgently done

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Logo Design Brief for "Celibery" Project Overview: We are launching a new brand called "Celibery" and require a creative and visually appealing logo design. The brand name is a combination of two words: ...a logo that effectively combines these elements and communicates the essence of our brand. Target Audience: Our target audience includes health-conscious individuals. The logo should appeal to both young and mature demographics. Overview and summary Our brand name is "celibery" and we need it to use any of these 2 terms to show my logo "Cel" i " "bery" like it has 2 words A cel (cell , battery , power) And a bery (berries , blueberry) (a fruit) So designer can make an option to check what will be good in . This is b...

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I am looking for a skilled PCB designer who can create a PCB for an inverter project. The inverter is required to have a power output of 500W-1000W. Requirements: - Experience in designing PCBs for power electronics p...create a PCB for an inverter project. The inverter is required to have a power output of 500W-1000W. Requirements: - Experience in designing PCBs for power electronics projects - Knowledge of selecting and integrating resistors and transistors into the PCB - Ability to design a multi-layer PCB to accommodate the complexity of the inverter circuit Skills and Experience: - Proficiency in PCB design software - Understanding of power electronics and circuit design - Familiarity with selecting and integrating resistors and transistors - Experience in designing...

Waterproof Watch Project - Price Range: $50-$100 - Battery Life: 3-6 Months - Preferred Waterproof Casing: Plastic Skills and Experience: - Watch Design and Manufacturing - Knowledge of Waterproofing Technologies and Materials - Expertise in Plastic Casing Design and Production - Experience with Battery Life Optimization in Watches Details: We are looking for a freelancer who can design and manufacture a waterproof watch within the price range of $50-$100. The watch should have a battery life of 3-6 months and be encased in a plastic casing. The ideal candidate should have experience in watch design and manufacturing, with a strong understanding of waterproofing technologies and materials. They should also be knowledgeable in plastic casing design and production, ...

I am seeking an experienced electronics specialist to help me with a circuit design project that involves a linear synchronous motor. Specifically, I need with a robust driver capable of generating a 3-phase wave form of 2-5hz with variable voltage output to enable a variable magnetic field via current flow. The driver should be electrically isolated from the power circuit which needs to have a variable voltage output up to 60V and able to deliver a current of up to 100A per phase for short durations. Circuit design and parts list required, also the design should be able to be simulated or otherwise proven.

we are a solar broker selling equipment (modules, inverters, and battery technology) to investors, installers, developers, EPCs, to the solar market.

I want to make sure the figures are accurate. Lake House rental is 4358 total Boat Rental total is 1,932 We are charging per couples by the day they will be usiing.

...The specific requirement for this project is shape modification. The amendments do not need to be completed urgently, but I would prefer a quick turnaround. I have existing reference drawings that need to be followed: It is an enclosure for a printed circuit board. The printed circuit bord has been revised and so the holes for the plugs, switches etc on the enclosure need to be repositioned. There is also a requirement to ri=ound off the corners as per the attached drawings. I have: 1. STL drawings to be amended 2 revised printed circuit board plug locations to be inserted into the existing enclosure. Ideal skills and experience for this job include: - Proficiency in 3D design software - Experience with shape modification - Ability to work efficiently and meet...

I am looking for an experienced PV & Battery design engineer to design residential Hybrid Solar PV and storage systems, that will be certified. This type of system is size flexible, allowing it to be designed to meet our needs no matter how large or small. The design will need to include the necessary equipment and components for the system, wiring, and monitoring. The team or person selected must have extensive knowledge of the technology and expertise in the design and installation of these systems as this will be designed to meet relevant regulations and safety standards. The end result of the project will be a complete working deign which meets all requirements.

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We are looking for a skilled professional to design and develop a high-frequency AC inverter for automotive use. The project requires a maximum power output of 100W - 1000W and a preferred input voltage range of 12V - 24V. Ideal Skills and Experience: - Experience in designing and developing AC inverters for automotive applications - Strong knowledge of high-frequency power electronics and circuit design - Proficiency in selecting and integrating components for efficient power conversion - Familiarity with automotive electrical systems and safety standards - Ability to optimize efficiency and reliability of the inverter design - Experience in testing and troubleshooting inverter performance - Understanding of thermal management and protection mechanisms for high-power applications...

I am looking for an experienced freelancer to design and build a Sinewave Inverter Circuit with a power output of 1000W. The circuit should be able to provide voltage outputs of both 12V and 24V. Requirements: - Design and build a Sinewave Inverter Circuit with a power output of 1000W - Provide voltage inputs for both 12V and 24V - The circuit should be built from scratch, as there is no existing prototype Skills and Experience: - Strong knowledge and experience in circuit design and power electronics - Proficiency in designing and building Sinewave Inverter Circuits - Familiarity with voltage outputs of both 12V and 24V - Ability to work independently and deliver high-quality results If you have the required skills and experience, please submit your ...

Electronics Interns Required For a Startup Skills Required: - Circuit Design - PCB Layout - Embedded Systems Programming Duration: - 1-3 Months Training: - Yes (I will provide training to the intern) We are a startup company looking for electronics interns with specific skills in circuit design, PCB layout, and embedded systems programming. The ideal candidate should have a strong understanding of these areas and be able to apply them to our projects. The internship will last for a duration of 1-3 months, giving interns the opportunity to gain valuable hands-on experience in the field. During this time, they will work closely with our team and have the chance to contribute to real-world projects. We will provide training to the interns, ensuring they have the necessary ...

I am looking for an electrical engineer with expertise in microwind to assist me with a small-scale project involving nanoelectronics. Requirements: - Strong background in electrical engineering, specifically in microwind - Experience with circuit design and power analysis in small-scale projects Constraints: - I have specific requirements for this project which are detailed in the attached file. If you have the skills and experience in microwind electrical engineering, I would be interested in discussing the project further with you. Please provide examples of your previous work in this field.