Lithium ion battery charger circuit jobs

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    21,940 lithium ion battery charger circuit jobs found, pricing in USD
    circuit designing project 6 days left
    VERIFIED

    creating an circuit using information based on basic and operational amplifier

    $108 (Avg Bid)
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    12 bids

    I am looking for someone to design a simple high side PWM circuit. This will be running at 12-15vdc and could theoretically have a load of 15A max. It can't be low side because the negative terminal of my PWM controlled device is grounded to the frame. I prefer Kicad, or Fritzing as those two are easiest for me to customize my board layout in. If you can make the circuit entirely using digike...

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    Hi Ion S., I noticed your profile and would like to offer you my project. We can discuss any details over chat.

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    Solar LiPo Charger board 6 days left
    VERIFIED

    Wanted is design, schematics, PCB layout and working prototype of a solar LiPO charger board. Documentation of all used parts as well as schematics and layout has to be delivered along the gerber files, a BOM list and a working prototype. The specs are as follows: Minimum requirements: - 1V .. 3V input from a photovoltaic cell - charging of a single cell LiPO battery 150mAh .. 500mAh capacity -...

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    pcb arduino nano pinout 6 days left
    VERIFIED

    make arduino nano pinout gerbers, with atmega328p-pu, it has to adapt the arduino standalone including crystal circuit, reset push button, led, and 7805 regulator, input voltage with pads. match the analog digital pins to pinout

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    Hi,freelancers! I need 3KV Inverter be able to use the multi-port for 1kv Solar panel , Wind generator , Diesel generator , Battery charge. If this project interest , prepare of experience project this ago. Once , if I am hired any excellent freelancer , I will discuss more kindly and provide of attachment. Thanks for your attention.

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    Website re-design (urgent) – English Job category: web design Description: We are looking for a web designer who is proficient in both English (and maybe add Chinese later). The designer needs to re-design the official website completely with 6 page tabs below, (details to be provided in our layout plan later) 1. About us (company info and milestones, mission/vision etc.) 2. Management t...

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    I'm a research and development engineer looking for increasing and encrypting the signal of nRF24L01 or HC-11 Modules for a research. - The signal must be increased in range from 10 Km up to 30 Km. - It must be NLOS. - Must be encrypted with a high and secured encryption. *You have to* : 1- Submit a research paper that include the explaining of the project you did in details. 2- A schematic...

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    Seeking a freelancer to design our project. We wish to take readily available scales the have BLE 4.0 and leverage the new BLE 5.0 protocol to implement the mesh and beacon abilities within the product development. The scales we have access too, already have the ability to send weight we want to add temperature and battery/charger voltage to be sent to an app we want to develop. The micro-cont...

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    Hi, we are looking for Mac OS GUI based Application to build Android/iOS App Automation tool with adb libraries & xCODE instruments. we want to read the app info, measure the performance during screen transition and Battery consumption while using the App and port that info into the GUI Tool. Device connected to system via USB which is fine. Please submit your proposal with simple doc how yo...

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    Wanted Pedal trike tricycle for cross country battery powered too. Design , fabricate and deliver prototype. Should be near Delhi, Punjab or within india.

    $700 (Avg Bid)
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    Build me a circuit 5 days left
    VERIFIED

    I want electronics person to design the circuit as shown in the attached file and also help me in code fixing.

    $60 (Avg Bid)
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    Hi, i want a Eagle Design Block of a 15A 24V 6 Cell Li-ion 18650 battery protection board. High current protection board with continuous 15A [login to view URL] must be design in Eagle so i can import it easily to my project. -Discharge protection / Overdischarge protection -Overcharge protection -Charge protection -Short-circuit protection -Temperature protection

    $273 (Avg Bid)
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    Required a DC led driver with built-in rechargeable circuit. In case of lost electricity it powers up and when the power is available then it should get charged and light as well. Mainly focused areas are 1. Good Protection from high voltage 2. Cut-off when the battery is full 3. auto switch to battery or DC power source. 4. Power rating for LED is DC 20W, 28-32 Volts with 600mAmps. [login to view...

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    Hash Tables 4 days left

    CISS-111 Project 6 Write a Java program to demonstrate using hash tables. Doing more file processing, you will read in a dictionary file, [login to view URL], and use its contents to spell check a file, checkme, that is provided on the command line. This project is not an in-depth, comprehensive program in the nature of root words, tense, plurals or endings. Rather many words of varying form...

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    Senior UX/UI Designer 4 days left
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    - Senior UX/UI designer for a running project with an automotive client - Start of the collaboration ion the 12th of August (we have a few days of flexibility) to start the onboarding and support design stream - Duration 4 Months with possible extension - It is a Full-time project, it would require 5 days a week of involvement. The primary work location is Munich Futurice office. - The...

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    I need a tally counter for creating donor sites during hair transplantation surgeries. I need the schematics and code, since I don't have the time to work on them, but I can build the device myself. Basic functionality: The patient has an electrode (ECG electrode) on his hand. The other end of the wire is connected to a needle used to create donor sites on the patient's head. When the n...

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    I am looking for someone with USB protocol experience to write a small program which can be merged into my existing Arduino/Atmel source. I am new to the USB protocol and not having much success finalizing this portion of the code. Specifically, I am having trouble resuming USB communication after the chip is put into a low sleep mode whilst simultaneously running from a Li-Po battery source, and...

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    This project is for a compact human motion detector using PIR sensors for detecting when someone has gotten up from bed or is in danger of rolling off the edge of the bed. The recommended design is using 1 PIR sensor at the top for detecting sitting up, 1 PIR sensor to detect falling off the left side edge and 1 PIR sensor to detect falling off the right side edge. A receiver box will receive a ra...

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    Hello guys, I have many YouTube channels for which we need logo around 25 logos We need logo for mobile battery selling companies Payment - 12$ per logo But we need first logo as a sample (not paidd,) You need to send logo without watermark for sample, once we see sample logo is up to the mark then after, we will create milestone for next logos but first logo is not paidd then only bid thanks

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    Hello guys, I have many YouTube channels for which we need logo around 25 logos We need logo for mobile battery selling companies Payment - 12$ per logo But we need first logo as a sample (not paidd,) You need to send logo without watermark for sample, once we see sample logo is up to the mark then after, we will create milestone for next logos but first logo is not paidd then only bid thanks

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    Design battery management circuit ,very low voltage

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    Hello, I am looking for some proven to sell e-books for Smartphone Niche including the sales page. For example: - How to keep your phone safe - How to protect your phone from being hacked - How to make your battery last longer - DIY guide on how to fix your screen, debug, etc.. Language : French or English

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    Hello Urgent requirement of circuit design and analysis project to be done by 17th July . apply asap if you are ready to start immediately

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    We are looking to fix our application bugs and add additional features: Bugs: High priority – Must be completed in 5 days. 1. Computer Login. When using the login name and password to connect to a computer, and after sending the data the first time, it doesn’t connect to the folder anymore. 2. Computer Login. Cannot connect to computers with a domain. 3. Computer login. Cannot delet...

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    What I want is a simulation(proteus, matlab). It can be divided in to 3 part or more. 1: Solar energy is converted into electrical energy to supply large battery energy storage devices then supplying 230V AC 2: Substation's electrical energy converted to 230V AC 3: compile code by using a microcomputer like Arduino Programming software(MPPT method=Perturb or observe or Incremental conductance...

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    MCS Rebrand 3 days left

    I would like someone to take on the entire project in increments. So I pay one increment at a time at say $20AUD each time approx. Happy to pay for the quality. Would like to see a watermarked image in advance. $22 USD each incremebt x 8 $176 USD. 1. Main Logo (With MCS "mint car solutions") 2. Two minor logos (MCS Batteries, MCS Rental Vehicles) 3. A document letterhead 4. Design for ...

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    We need computer repair technicians/specialists to do on-site PC repair services in Jakarta. As part of this project, freelancer needs to take following steps: - Call the customer and agree on a schedule when you would visit client location - Visit the location which could be 15 - 20 km away. Freelancer to use his own conveyance - Deliver the on site work [ could be 2-3 hours ] -...

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    The car runs on 6.4V battery. It is all wheel drive car - all four wheels turn when throttle is pushed to drive forward or backward. There are two motors that allow to achieve this, one is located at the front of the car and the other one is at the back of the car. These two motors work fine and there is no issue with the the forward and backward movement. The problem is that the steering wheel o...

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    I have an app that streams video from an Android device to an iOS device via WebRTC. What I am looking to do is to add a RTCDataStream to it to telemeter data from the Android device (like GPS, video parameters, battery parameters, etc). As an expert, I think this should be very straightforward.

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    Looking for a graphic designer who can work with a new software called Famous from famous.co. Helpful to know Sketch and Photoshop or some other graphic software where thee are layers to create. If you enjoy working from your home and have high speed Internet and you are ok with flexible work hours and can read and write English or French reasonably well; Est-ce que vous lisez et écrivez ...

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    pease bid only if you are in maharastra (india) circle. i need hardware as well.

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    I would like a field deployable data acquisition system (preferably using something simple like arduino) that will record a fluxgate magnetometer for days in the open air. If you want to look it up, this will be used for geophysics, one use will be to be a base magnetometer, which will remove for the magnetic changes due to solar storms and the second will be to record magnetotellurics, which can...

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    Touchscreen Countdown Timer 2 days left
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    I'm working on a prototype for a project and I need to source a circular LCD/OLED (or similar) countdown display timer - see the attached rough sketch. The timer must only countdown days automatically, not hours, minutes or seconds, and be operated by a battery that you would get in a digital wristwatch or car key fob. It needs to be simple and basic in its functionality. If I want to set t...

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    To design a 3 kva grid interaction hybrid pure sine wave inverter with PCB, firmware design and microcontroller codes development work. The inverter should have solar, battery bank and grid are the sources.

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    Hi, 1. I want a professional engineer to design a battery charging circuit with all the protection circuits (overcurrent, overvoltage, overdischarge, cut-off, shortcircuit, etc). 2. Kindly check the attached file(fig-1), (fig-2). I have different excitation methods for piezo resistive sensor. Which one is stable and long term stability. If you have any other ideas, kindly share it. 3. I would to ...

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    Build a PCB 2 days left

    I need a LED matrix PCB done with RGB, it must be controlled by Xbee and Arduino. I have done an initial layout. There is not much work left beside to check the circuit and intrgate the pins of the arduino and xbee as well and check the circuit is complaint. I will need the eagle schematics when done.

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    LTspice circuit 2 days left
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    I need to do an LTspice circuit

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    We sell Electrical automation products including, WiFi Circuit breakers; RF Wireless light times; Wireless Water heater Controllers; etc.... We are looking for someone who has solid online experience selling electrical equipment who is able to list our products on various online platform in Canada, USA, North America, Middle East and Africa. The main payment will be commissions of up to 20% of ev...

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    The Brief Equipment Mkr1000(Arduino) Ads1256 (Texas instruments) Outcome required Ratiometric analog to digital converter ADS1256 will send SPI protocol data to MKR1000 and can be recorded from a uart connection from the MKR1000 to a PC. The sample rate must be variable but will need to also be able to reach full speed of the ADS1256 which is 30Ksps and will be required for 4 channels of input fro...

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    Trophy icon Logo for Next-gen Robotics company 8 days left

    Mobian Dynamics is a new company out of Melbourne, Australia. We are a tech startup looking to bring dynamic automation to industry verticals. We make mundane processes easier through AI and smart electronic control systems, along with an intelligent orchestration layer for complex systems. Work with us to build a logo and branding scheme that shouts "next generation dynamic automation&quo...

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    Guaranteed Sealed Top Contest
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    I'm looking to design a prototype for a smart device that i would like to patent and sell. I first need to develop the device. The device would need to an instrument to either make a liquid measurement and/or take the weight of the over product. The device would also need to report back the battery life. periodically. Each measurement would need to come online and post to an api for data ...

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    A variable DC input battery bank 24 v to 400v DC input to constant output 415v, 50hz, 3 phase output grid connecting Inverter of capability 5 kva. The input source suitable for battery bank and or solar of variable input

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    I have a project involving GPS trackers for elderly. Will like app built to monitor these devices and become an interface for changing parameters

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    Hi, I need to emulate a crystal oscillator circuit (attached) based on wave digital filter (WDF). Basically we aim to have WDF emulation that match a Spice simulation (e.g. in Cadence). I Already have the circuit simulated in Cadence (the output attached) . Attached, my circuit (Crystal Oscillator) schematic that needs to be mapped to WDF along with its output waveform, you will notice that there ...

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    I have a machine use for test PCB(Printed Circuit Board). Now, machine is running on old technology in WinXP. I want someone who can develop software for my machine using RPA or python technology.

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    I want to design a ultra compact 6A 80W Li-ion charger. A power electronic expert with minimum 6 years of experience is required

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    PLEASE, for the love of god, read through the description. This is a very specific niche! The client's website is [login to view URL] Feel free to browse through their blog at [login to view URL] to see the kind of topics we generally cover. This is a technical subject so we'd strongly prefer someone with a suitable background. We're hoping you'll be able to research and come...

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    The client's website is [login to view URL] Feel free to browse through their blog at [login to view URL] to see the kind of topics we generally cover. This is a technical subject so we'd strongly prefer someone with a suitable background. We're hoping you'll be able to research and come up with title ideas. We're a little limited pay-wise, with the upper limit being 5-6 ...

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