Battery charging circuit trabalhos


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    I would like to know as much as there is to know about the battery used in electric vehicles, along with its weight and what the consumers or even companies are wanting to get the weight down to. For example, what batteries are used for Teslas, how do they work and what materials are used to make those batteries? What are experts currently saying needs to happen for the batteries to become more ...

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    I will attach a code to be modified. I am looking to use an ESP32 with a 3 or 4 channel relay board to simulate a button press on another contact board for 3 of the relays over wifi. Basically, just using the 3 relays as a dry contact momentary switch each. Like it presses a button (so maybe closes the relay for one second and then opens the circuit to simulate a button press)? I need three dry co...

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    Hi I am a looking for 3d game artist to create a envrionment of a big city will be use in driving game simulator developing on unity3d. Below are the details of the environment: A medium poly city environment use in car driving simulator. A city must be big enough to have atleast 4-5km in diameter. A city must have a look and feel of india's city. Not all buildings must be unique, you can ...

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    I am looking for a person that would connect to my phone via team viewer or any other remote connection app and configure it to improve battery life and privacy. For now my main problem is that somehow my wife always can track my phone, see on Google Maps where it is located etc. It is very frustrating .... I need also have it configured for maximum privacy and anonymity as well I am i GMT+1 time...

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    Looking for a GPS mapping service (similar to GPSWOX, GPS-Server, Traccar, GPSGate) Need overall admin account, with sub accounts. I am open to a totally custom design someone already has built, or I am open to modifying one above like gpsgate or traccar. I am ok with HTML and PHP, but I do not know JavaScript. I don't need complex fuel calculations or anything like that. Just the basics, ...

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    Smartwatch BLE Encerrado left

    K watch is my project name .K watch have brain is NRF52 ,the MCU very strong from Nordic Semiconductor ,you can connect to smartphone ,smart bike ...[fazer login para ver a URL] have 1.3 inch oled display and accelemeter can tracking you activities like walking, tap,double tap ,raising your hand ..etc.K watch have 200mAh lipo battery can use one week .

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    PSpice CAD Encerrado left

    This project with the PSpice CAD tool, as well as schematics and plotting simulation results. Circuit to be simulated A schematic of the test circuit

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    I am trying to figure out for a hobby how to convert conductive paint to ink in order to print a test circuit on paper. I need someone who understands conductive paint and is a chemical engineer. 1. What additive will allow it to print 2. What is the cheapest and best conductive paint? 3. Can I just make it myself? 4. What ink jet printer is the cheapest and work the best? I will need someone t...

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    3 Phase Thyristor/IGBT circuit design required for electrical load control. Electronics/Embedded circuit designing experienced candidate can reply for more discussion. should have worked on IGBT/Thyristor project.

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    BLE Firmware Writer Encerrado left

    Require an experienced BLE firmware writer. Experience with BLE BMD 350 preferred. Battery longevity and stability are our priorities

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    Develop LFP Charger Encerrado left

    Need to develop LFP charger with 70V DC and 35 to 40 Amps current. Features required, 1) Reverse Battery Protection 2) AC mains surge protection 3) Instantaneous charging current & Battery voltage 4) Active PF correction

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    Hi there, I need i2c drivers for the ARM Cortex powered board for these chips: 1) BQ25892 -- Single Cell 5-A Fast Charger 2) BQ27421-G1 -- Fuel Gauge With Integrated Sense Resistor The driver should be in the Zephyr-style (pls check here: [fazer login para ver a URL] ). The driver should support interrupt / trigger, like in: [fazer login para ver a URL] The driver should support c...

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    Needs to be completed within 10 days. Require to upgrade a react-native app with additional screens and functionality. (Including backend firebase/nodejs). Backend functionality -> Backendless Firebase cloud functions OR nodejs. We are using firestore as primary DB. Backend functionality for the above screens to be done. Also use Redux to manage state in the react native App. To work on both ...

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    I have a circuit board removed from my Bluetooth headset. Attachment is the appearance. I would like to develop an App that can connect with this circuit board and has the following main functions embed. 1. Remote control to start/stop/pause recording voice. 2. Real-time transmit the voice to the device (mobile phone or tablet). 3. Real-time transform the voice to spectrogram and show it on the sc...

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    I have a circuit board removed from my Bluetooth headset. Attachment is the appearance. I would like to develop an App that can connect with this circuit board and has the following main functions embed. 1. Remote control to start/stop/pause recording voice. 2. Real-time transmit the voice to the device (mobile phone or tablet). 3. Real-time transform the voice to spectrogram and show it on the sc...

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    electric fence Encerrado left

    I saw a YouTube video and I would like a PCB designed based on the video. The video is "DIY Electric Fence Circuit" by, Ludic Science

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    Needing someone with experience with Shopify and Stripe payments. I am needing my website to store credit card details of customers for potential recharging them in the future in case of incidentals (like they do in hotels) - so it would be "saving a card after payment" and "Charging a saved card off-session". Link for information is: [fazer login para ver a URL] [fazer login p...

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    I'm looking to put together a DIY electric charger station that will take stage 2, 3 chargers deployed through out the US and charge my power banks, electronics and so on inside my gas powered car. Need someone who knows this area and who will create a detailed instructions on what parts to buy and how to put everything together to accomplish such project. respond with answer to 2-3=x before...

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    Waterman ilustration Encerrado left

    need dedicated graphic, presents water man with words DNAWATER. The whole person should be made by water. Shape starts from 3 dna helices, finished on the top with V-shape arms with hands „open to the sun”. Face- unisex, long hair. Above words "DNA WATER" My idea-inspiration (you can use it or make your own) You may start with making the „basis”. The foundatio...

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    we have a team of experts who familiar in Well versed with PCB layout and Schematics capture and should be able to use the tool independently Should have exposure to multilayer PCBs Design multilayer PCBs for embedded applications Should be able to work with the designers for the layout generation Generate gerbers and manufacturing ready release packages for PCB Manufacturing. Work with PCB v...

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    Trophy icon Brand building for start-up Encerrado left

    Our team is going to start a venture where we will sell the supplies needed to build your own Home Energy Storage system. Current suppliers of such systems, like Tesla with their overpriced Power-wall, do not offer Do It Yourself components for the prosumer who want lower cost and more flexibility. What we want from you is: - a logo with accompanying font, colour schemes - mock-up/Lo-fi landi...

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    We are developing web and mobile application which will list EV charging stations. Application User will able to do following things 1. User account with login/register/ forgot password facility based on email. 2. User profile, messages 3. User will be able to see nearby listing 4. Click and check details of listing 5. Navigation using google map 6. Read/add user reviews 7. Bookmark particular l...

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    Design PCB's for manufacturing, prototypes

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    We need a two minute opener video for the opening session of an industry conference at the end of October 2019. The video needs to be high impact and inspiring to get delegates in the right mood for the day. The theme of the conference is digital transformation so abstract/graphic visual elements such as circuit boards, futuristic, binary code, digital sound waves etc could all work. Something w...

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    Technical write up Encerrado left

    Connection of a Large Renewable Power Station with Battery Storage to the Australian National Grid

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    Required work is to modify an existing PCB design to add circuit fixes: 1) Update of schematic to fix connectivity problems, change of 4-5 passive components. 2) Replicate an existing small circuit block using same layout in blank space. 3) Make updates to PCB output, these do not affect current circuitry placements. 4) Generate manufacturing data. Expected task duration is ~2 days. This i...

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    I am working on a product which includes some FPGA based electronics circuit, usb and wireless connectivity. Its a wearable device which must have good aesthetics as well. I need the freelancer to calculate the approximate designing cost and cost per piece if it's designed from India. They should have enough technical knowledge and industry experience. If the freelancer can help us further...

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    I need a few small changes to a indesign document that I have. Just a couple copy edits are all. Entire project shouldn't take more than 5 minutes. Change Copyright 2018 to Copyright 2019 Change 160,000 to 175,000 Add EV Charging Stations to the 'venues section' before Financial Institutions (on 2nd page) That is all! Just need updated .pdf and .indd files.

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    Our business is an ecommerce. We operate on our own website as well as mainstream marketplaces in Brazil. We focus on backpacks, purses and travel accessories. Most of the time, we sell the same product at more than one or two marketplaces simultaneously. However, the cost structures change substantially between marketplaces, with different selling and transportation fees, even though it is the sa...

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    We are a building controls contractor near Washington DC. Our business started in 1975 and we have since completed over 7500 building controls projects using electronic controls. We are looking for an experienced electronics engineer who can design a printed circuit board (PCB) using Kicad. The PCB will be used to mount a Sollae Systems CIE-M10-BO communications interface card, power supply and ...

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    We are seeking those with an engineering or other related PHD or otherwise good background to write reports on developments in battery technology. We provide links to some of the needed research materials. You must be good at understanding and organizing complex information in a scientific field and be able to summarize developments about technology development, sponsored research, licensing and p...

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    SRAM circuit Encerrado left

    The Schematic circuit is done and simulations i just need one part completed. Its done in Multism

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    I need an electrical and electronic engineer to help in some project and write some reports

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    I need someone who can guide me to complete the project using flutter and core 2.2, the charging will be per hours or per course(it depends ).

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    Electrical Encerrado left

    Design a circuit using produced by three separate pressure sensors

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    Universal frame pcb Encerrado left

    Hi, I specialize in electronic speed controllers for the hobby industry and have been in business for 30 years. I am looking for a new PCB board layout artist to take my hand drawn designs to Gerber files. I have about 8 different PCB that will need changes over the next year along with new pcb designs to be added. This project is to take a current bare fiberglass frame and add a copper circuit,...

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    We are developping a microchip to communicate with lithium battery. We'd like to offer the possibility to broadcast the state of the battery though Z-Wave. We are looking for a frellancer able to develop the integration/programmation of the z-wave protocol to our chip.

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    Hello Mahmoud I want to develop a project with an ESP2866/ESP32 and a SIM800L GSM module. I need to be able to control an LED with SMS messages. The difficulty is managing power. The project should run from a 18650 lipo battery that is charged from a solar cell. So the ESP and the GSM module should sleep as much as possible. Can you help me with that project? I could send you the whole specific...

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    I need someone who can guide me to complete the project using flutter and core 2.2, the charging will be per hours or per course(it depends ).

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    I am looking for a Mechanical AND Electrical engineer ( or two people who have a history together) to help improve pro type I have. I am looking for someone in, or WITHIN 25 ish miles of 80302 (Boulder). The tool is a hand held electric t-bar. Right now we are using a vape battery to heat up a circuit that is enclosed in a tip. The problem is the tip gets too hot ( around 130 degrees). I need a...

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    Many highly qualified Korean to English linguists are needed for a very large technical translation job. This job has mostly a mix of business, electrical, battery texts. This is for e-Discovery, about 1.4 million words. US-based translators only. Please email your rates and CV to [Removed by Admin]

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    Modify PCB(NDA Required!) 1. Add a RF transreceiver to my PCB 2: Add additional layer/or utilize the second layer to reduce the length 3. Review the design and make suggestions. [fazer login para ver a URL] another PCB with a trans-receiver to control a stepper motor/driver motor with minimum size and two 3A battery

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    I am in the telecoms business, in the field of network monitoring. What I need is to access extra functionality available on Samsung S10 devices, which is not available in a non-rooted device. Specifically, I'm interested in one of the following models: • Samsung Galaxy S10 (SM-G973F); this is my primary preference • or Samsung Galaxy S10e (SM-G970F) • or Samsung Galaxy S10 ...

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    Tournament Encerrado left

    We are organising one badminton tournament on December 28 & 29th. We are looking out for photographer who can capture photos and small video clips for 2 days. The photographer should carry his own DSLR camera with good battery backup.

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    Draw a block diagram for break beam subsystem. There should be an introduction about the break beam sensor and a diagram that explains how it works and how it can be connected to Moteino board. Also, the way it should the break beam connect to the Moteino needs to be drawn from Fritzing diagram. please explain everything in details and provide all the information in the block diagram and circuit....

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    AC line control Encerrado left

    I'm looking for an Electronic Designer with proven expertise in power electronics, TRIACs, SCRs etc as well as LTspice simulation. Requirements are designing a simple low power circuit to switch polarity of AC source line onto a load upon required digital control signal(s) and on demand similar to output trace in attachment. Switching must happen in zero crossing point and faster than 0.25ms....

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    Trophy icon Create me a Circuit Breaker Graphic 10 dias left

    I'm looking for a 2D graphic of an electrical circuit breaker to add to my company's website, marketing pamphlet, and other documentation. Please review the attachments as guidance for the graphic I'm looking to have created. Colors should be a dark gray or black, but I'm open to see other options as well. The graphic should include as much detail as possible including the brea...

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    Tenants utility invoice re-charging software development I would like to develop an online software/application that can apportion utility charges (Electricity, gas, and water) and issue an invoice based on the apportionment of the primary meters to each tenants/sub-meter. There must be database to store the client details, sites and primary meters. Sites primary utility meters are linked to tena...

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    Alarm always vibrate Encerrado left

    I have a finished Alarm Clock wear os code but need a code snippet which allows that the Alarm clock always vibrates even if the battery saver mode is active on the watch.

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    We make sensory equipment for special needs and disabled people. We need a low cost tilt switch to remotely control 6 colour bright LED, so wireless remote control to fit inside a foam cube and change colour of a 6 colour bright LED. We want both the battery powered tilt controller and the receiver unit which will be 220/240 mains adapted (not battery) and the LED 6 colour change brightest possibl...

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