Battery switchover circuit jobs
I am looking for a skilled professional to design a fast division circuit with a required speed of less than 1 nanosecond. The technology that should be used for the circuit design is Verilog. As for specific requirements or limitations, I am open to suggestions and willing to work with a creative and experienced freelancer who can suggest the best solutions for this project. Ideal skills and experience for the job include proficiency in circuit design, experience in using Verilog, and the ability to work efficiently to meet a tight deadline.
I am looking for a Pic32 programmer who can help me with the development of an RF link for data transmission. The ideal candidate should be proficient in Python programming language an...transmission of data over a distance of 100-500 meters. The RF link should be able to handle high volumes of data and operate with minimal interference. Key requirements for this project include: - Proficiency in Python programming language - Experience in working with RF modules - Ability to design and develop a reliable RF link for data transmission - Knowledge of signal processing and RF circuit design - Familiarity with data encryption and security protocols If you have the necessary skills and experience, please submit your proposal with details of your past projects and relevant quali...
Please use the attached word document for the content of the flyer. Also please use our logo which is also attached. I would like to see this ad in the following sizes: 8.5" x 11" / and half page (8.5" x 5.5") Note to graphic designer: create an eye-catching layout that effectively communicates the features, benefits, and limited-time promotion. Ensure the contact information is prominently displayed and use visually appealing imagery to engage potential customers effectively. Color Scheme: Maintain a professional and vibrant color palette, incorporating shades of blue, green, and yellow to evoke a sense of trust, sustainability, and excitement.
Consider the matching circuit in the figure below used to match an access transmission line with the characteristic impedance: Zc-50 Ohms to a load impedance: Z= 100-j100 Ohms, The circuit is working at a frequency f=3.5 GHz. Imposing a maximum magnitude for the reflection coefficient at the input |S11=0.1, determine the bandwidth for each case. Discuss the results.
I am looking for an expert with experience in replacing Feign with HystrixFeign for complex integrations. The ideal candidate should have in-depth knowledge of HystrixFeign and be able to implement fallback methods. Load balancing and circuit breaker features are not required for this project.
I am in need of help with my fridge! As soon as the fridge plugged in to the circuit board or after a while, the circuit board turned off. I haven't tried any troubleshooting or repairs myself, so I'm looking for both repair service and advice on how to fix the issue myself. I need help from an experienced professional who can take a look and diagnose the problem accurately.
Job Description -------------------------- I have a batch of Chinese made volt meters with 7 segment led displays these are pre-programmed for input z...Chinese made volt meters with 7 segment led displays these are pre-programmed for input zero to 33 volt and output will display the voltage with 3 decimal places. If possible I want to reprogram the MC for input zero to 4 volts and output zero to 2000 V on the display (ratio 1:500) Laser engraving on micro is S033 PHVG 639Y , but I can not find any specifications for the code (see images) Circuit board has connections for GND, VCC, Send, Receive I am happy to post a sample of the voltmeter to the successfull freelancer. On completion of the job I need a working code and instruction how to upload the code to the voltmeters. G...
I am looking to build a simple prototype for a smart weighing scale, that is compact in size. Feat...weighing scale, that is compact in size. Features required are - - Device should be small & circular in shape (shape & size of a coaster) - approx 10 cm in diameter and 0.8 cm in thickness) - Should be cheap to make & easy to replicate. Prototype should not cost more than $10 - $15, but when mass manufactured, it should cost no more than $3 - $4 - The device should be battery powered (flexible on battery capacity, based on cost). Battery should be rechargeable. - Maximum weight that the device needs to handle is expected to be ~3kg - Require precision of 1g - Device should have a button, which when pressed sends the weight data - Device sends data to a web...
I am looking for a freelancer to develop a lead acid battery analyzer on ESP32 with the following specific requirements: - Battery Test (SOC, SOH of Lead Acid battery), Starter Test and Charging Test for various type of lead acid batteries - Real-time monitoring of Battery voltage - Wi-fi connectivity to transmit data to a mobile app - Low power consumption The ideal freelancer should have experience in ESP32 programming, battery analyzis of Lead Acid batteries.
We a...Decawave (Qorvo) 1001C module for distance measurement. There will be two components: Receiver (Stationary) and Tag (Mobile) -Receiver will be act as a stationary, mains powered logic controller to set output as 1 or 0 depending on the distance measured of tag or tags around. -Tags will be moving and battery powered devices -Tags will be acting depending on the movement, so it will include integrated accelerometer -Tags will work on 400mAh rechargeable battery target at least 1-week battery life -Receivers will be configurable to set distance threshold (via BLE) We need a work for the algorithm, working principal and firmware codes for communication between tags and receivers. Tags should be low power since they will have a rechargeable batteries They can work...
I am looking for an Australian based PR specialist to help me increase brand awareness for my Australian battery recycling technology company. My specific goal is to reach out to Industry, venture capitalists, government and policy makers. We have written the drafts and these have been approved for release by the mainstream Australian University partner we are developing technology through. Ideal skills and experience for this job include: - Experience in public relations, particularly in creating press releases - Relationships with journalists (including financial press) and trade publications - Knowledge of the Australian government and policy makers - Excellent communication skills to effectively convey my company's message - Ability to work independently and meet deadline...
Need a 9V circuit that turns on a heater when 13C or below. Heater is off when above 13C
I need signal amplifier circuit: - The maximum input and output voltage 6v -The maximum current 1 ampere. -Power to supply the component 0-24 volts.
I need firmware development for ESP32-C3 for following tasks: -Ultra low power consumption design -Run on 2xAA batteries for more than a year -On-board Digital Temperature Sensor value reading and logging (logging period) -Sending to an MQTT broker (upload period) -Wait for commands from server after data upload -Wi-Fi parameter (SSID, passwd) set over BLE for lower power consumption -Data ...Sensor value reading and logging (logging period) -Sending to an MQTT broker (upload period) -Wait for commands from server after data upload -Wi-Fi parameter (SSID, passwd) set over BLE for lower power consumption -Data encryption -no webpage hosting or accesspoint mode needed Those are the main functions of the device. We need an experience for low power programming, we are able to design the ci...
I need to drive 3 speed motor, plasmacluster, valve, read water inlet temperature and ambient temperature. It must work with RS485 modbus RTU protocol. It can work stand alone or with external modbus control. Development is with Arduino. source code must be released. Circuit and PCB diagram is indicative and must be completed by the freelancer. PCB is to be done with Eagle and must be released. A block diagram of both hardware and software must be presented in advance. Other technical specifications is "on the road"..
...complimentary receiver will have a jack output, enabling the user to connect it directly to a speaker for immediate sound amplification. In terms of the PCB design, I am looking for someone who has expertise in: 1. Implementing low-latency wireless signal transmission protocols, ensuring a near-instantaneous transfer of the guitar signal. 2. Optimizing power consumption to achieve an extended battery life of up to 10 hours for both the transmitter and the complimentary receiver. 3. Integrating the necessary audio outputs (auxiliary output in the transmitter and jack output in the receiver) for seamless connectivity to amplifiers or speakers. If you have experience in these areas and believe that you would be a suitable fit for this project, I would greatly appreciate the oppor...
Hello Creative Minds! We're an innovative and forward-thinking organization in the sustainable energy sector, currently making strides in the areas of Battery Energy Storage Solutions (BESS) and E-Mobility. As we expand our business into these new areas, we're on the hunt for a passionate, talented, and experienced Logo Designer to help us adapt our existing logo in a way that embodies these new sectors we're venturing into. Job Description: Your task will be to take our current logo and create two adaptations that encapsulate the spirit of our new business areas: BESS Solutions and E-Mobility. We want these new logos to be both coherent with our current visual identity and to highlight the distinctive features of these innovative sectors. Responsibilities: Analy...
...freelancer to develop a NMEA CAN bus program for battery monitoring. The project requires experience with Lithium-ion batteries and the J1939 communication protocol for the CAN bus. The desired update frequency is real-time. Skills and experience required: - Experience with Lithium-ion batteries - Expertise in the J1939 communication protocol for the CAN bus - Ability to develop a real-time monitoring system for the battery - Knowledge of NMEA standard for marine electronics would be a plus The ideal candidate should be able to deliver a reliable and efficient battery monitoring system that can accurately report the battery status in real-time and be displayed on any standard MFD display. I have attached a spec sheet for a Mod Bus battery previousl...
I am in need of an experienced circuit board designer to create a circuit board from a hand drawn schematic. The purpose of the board is to convert a 25VAC analog pulse signal to a digital input that can be read by a Raspberry Pi. I am open to suggestions for the size and form factor of the board, as well as the budget for any components required. The designer should have extensive knowledge in circuit board design and preferably experience with components suitable for use in a Raspberry Pi environment. Would like to use PiHat design allowing me to connect directly onto GPIO of Raspberry PI. Have a picture of the circuit design and the final board. I live in Syracuse NY USA would prefer a local resource but not a requirement
I am working with a leading producer to take guitar effects and put them back into rack gear. We are emulating the tube screamer circuit and have other requirements for the circuit to give it a unique edge. It is at POV stage so budget it tight! I need help to design and build to a level that is in line with safety standards to not have limitations in global markets like the US or Europe. I can supply more detail once I have gauged the suitability of the project.,
We are developer and producer of beach products. See website: ....... Password 111213 Our products have integrated a box secured with a SMART lock. The box is opened by entering a PIN. The lock is linked to the backend platform described below and configured via a smartphone app. Moreover, the lock sends its status like the battery power, whether it is in use, etc. to the backend. The backend must be capable of assigning each SMART Lock to a specific customer (e.g., a hotel). Furthermore, we need to monitor and track how many SMART LOCKS are rented per customer each day. The customer must be also able to access this data. Hence, we need (i) an iOS and Android APP as well as (ii) a backend with a webinterface. We are active in several countries (Italy, France, Spain
I am looking for a developer to create a delivery route planning app for package delivery services on Android. The ideal candidate should have experience in Android app ...for package delivery services on Android. The ideal candidate should have experience in Android app development and GPS tracking integration. The app should have the following features: - APP Should able to import data of the deliveries i.e lattidue and logitudes and suggest and plan the route to deliver all the orders. - GPS tracking to monitor the packages being delivered for reference : Circuit Route Planner, Route4Me, and OptimoRoute The app should be user-friendly and designed with a clean, modern interface. The developer should be able to work collaboratively with me to ensure that the app meets my speci...
...Conduct a comprehensive study of the WPP's extreme operation points, including the worst-case thermal loading and voltage variation range. Earthing system design study: Analyze worst-case touch and step voltages to evaluate the need for additional protection measures and confirm the adequacy of earthing conductor sizing. Fault current calculations: Carry out minimum and maximum three-phase short circuit current calculations at every internal node of the WPP. Insulation coordination study: Identify any potential overvoltage stresses and propose measures for transient limitation. Protection coordination and selectivity study: Plan and coordinate protection measures across the WPP, including main and back-up protection of individual wind turbines, substation, and relevant T...
Title: Arduino Program for Motor Control with Automatic Restart Purpose: - The Arduino program will control motors and automatically restart the circuit after a specific time. Components: - The program will need to control motors. Expertise: - Intermediate level of expertise is required for this project. Ideal skills and experience: - Proficiency in Arduino programming language - Experience in motor control - Knowledge of automatic circuit restart - Familiarity with electronic components and circuits.
...file - GPS Track enabled for 60 min - Phone records video and voice for 20min Double Press: - Send email to multiple addresses - Send SMS to multiple addresses - Cancels GPS Tracking - Cancels voice and video recording Hold: - Copy the FLIC app FUNCTIONS below: Play A sound Camera - Takes photo Find My Phone Vibrate Phone Open Spotify and play ----------------------- * Email out when low battery * Client will need to be able to set a mobile number and email (multiple if required) * When app is launched, button syncs. You need to terminate app to remove sync/option in app to kill current connection till app reopen. Attached are the FLIC app screenshots that will be similar in our app. Basically we need a button to run some commands programmed via an app. Also add feature...
Needing a solar farm design and engineer to design and engineer a 4-5MW solar farm with optional battery storage in Australia
...storage, this laptop is an excellent choice for work and entertainment on the go. Description: Discover power and portability in the Lenovo IdeaPad 3 14ITL6 82H7019ALM laptop. With an Intel Core i3-11 processor, 8GB of RAM, and 256GB SSD storage, this laptop offers solid performance for all your work and entertainment needs. The 14" screen lets you see everything clearly, and the long-lasting battery means you can keep going all day. Plus, Wi-Fi and Bluetooth connectivity let you easily connect with your favorite devices and networks. With its design Slim and stylish, this laptop is an excellent choice for those who need to work and play on the go. Friendly URL: laptop-lenovo-ideapad-3-14itl6-82h7019alm The time frame for the project is a week and the information of the p...
...features. Battery: Lithium-ion This project from TTGO is similar to what I wish for : :62:28 Ideal Skills and Experience: - Experience in PCB design - Familiarity with ESP32 WROVER and EINK - Knowledge of low power design techniques - Familiarity with Lithium-ion batteries and power management - Ability to work collaboratively and provide regular updates on progress. The successful candidate must be able to create a custom PCB with EasyEDA that meets the requirements of my project. Preference will be given to candidates who have experience working with ESP32 WROVER-B modules and E-Ink LCD displays. If you think you have what it takes to design a low-power PCB with ESP32 WROVER-B module, E-Ink screen, and battery, please apply
Hello , Myself Tanmay Naik From Aero champ aviation our company is one of the leading company in aviation and defence sector we want a circuit designer who can design PCB layout in circuit diagram along with gerber file for us.
I am a small business owner looking for an experienced SEO specialist who can help me generate leads and sales through my website. I have specific keywords in mind that I want to target and would like to focus on blog articles as the primary type of content for SEO. The Website is Ideal Skills and Experience: - Experience in SEO strategy to generate leads and sales - Ability to conduct keyword research and target specific keywords - Expertise in creating engaging and informative blog articles to improve search engine rankings - Knowledge of how to optimize product and landing pages for SEO - Excellent communication skills to understand my business needs and provide regular updates on progress.
You must have experience in electronic product design and be familiar with adding new features to existing products. Knowledge of circuit design and firmware development is also required. More details will be shared in a private chat.
I am looking for an Arduino programmer who can help me with a project to code an Arduino board to control a circuit. Specifically, I need a programmer with experience in intermediate coding to create code that will allow a circuit to shut off at various times and then restart automatically. I do not have any existing code or hardware for this project. Therefore, the programmer will need to start from scratch to create code that meets my requirements.
Hello i am working on custom battery pack . I have designed the pcb for the pcb using the texas ic BQ76920. I am looking someone to check the circuit diagram/schematic and the pcb parts and find any mistakes cause currently is not working properly. Specifically i have wrong current readings. Also in my last test i damaged the ic.
...to take our 12v circuit design and turn it into a PCB design with terminal block inputs and outputs. Currently we use 3rd party bi-stable latching relays that have a SET, RESET and REVERSE input however we would like to incorporate this into the PCB design so we don't need third party controls if possible. Below is the links to the special components, you can use any DPDT relays. Timer BiStable Latching Relays Also the circuit needs to be optimized and could possibly be simplified with the introduction of diodes and removal of some relays. The outcome needs to be a print ready circuit board design that
...adjustable strap that can be worn around major body joints (wrist, elbow, knee, ankle, shoulder) for a specific duration of time. The strap material and design needs to be functional; easy to put on, comfortable, breathable, skin friendly for prolonged use and premium / exclusive finish. Main design criteria would be a flexible Illuminated (e.g. plasma disc flexible) feature tthat runs along the strap (battery powered or wired USB). 2. Wellness Bracelet A luxury bracelet that promotes wellness and healthy living. A proven product that combines modern science and traditional healing elements backed by years of research & development. This bracelet design should be unisex and either be flexible , modular or both with a contemporary look that is suitable for both formal and ev...
Arduino PID Control for Current Output - Desired output to be controlled: Current - Target setpoint: Variable value over time - Ideal skills and experience: - Experience with Arduino and PID control systems - Knowledge of electrical engineering and circuit design - Ability to program in C/C++ - Specific deadline: No strict deadline, but would prefer a simple program completed within 1-2 weeks.
Hi Ahmed Z., I noticed your profile and would like to offer you my project. We can discuss any details over chat.
iPhone Battery Repair for iPhone 7/7 Plus Skills and Experience: - Experience in repairing iPhone batteries - Knowledge of iPhone 7/7 Plus hardware - Familiarity with diagnostic testing for iPhones Project Details: - Primary issue: Battery Issues - Additional service required: Diagnostic Test - No device cleaning or software update needed I am looking for a freelancer who has experience in repairing iPhone batteries, specifically for iPhone 7/7 Plus models. The primary issue with my iPhones is the battery, and I require a diagnostic test to identify any underlying issues. No device cleaning or software update is needed. The ideal candidate should have knowledge of iPhone hardware and be familiar with diagnostic testing for iPhones.
...freelancer who can help me develop a 3 Phase Sequence Monitor for my system. The ideal candidate should have experience in electrical engineering and be familiar with microcontrollers and relay control systems. A low cost Microchip microcontroler shall be used. The power for the microcotroller, relay and interface circuit should be obtained from the 3 phase mains with a linear impedance converter (i.e. not switching.) Function description: After 3phase mains is applied, the circuit should start the detection. The power led should indicate that the microcontroller is working and performing the sequence detection. The output relay and the "Phase Ok" led should be synchronized ( using the same microcontroller pin is Ok.) Scope: Provide firmware, Altium projec...
I am looking for a freelancer who can help me with a battery pack cooling ang Aging MATLAB simulation project. The details of the project are as follows: Target Battery Pack Temperature: - The target battery pack temperature is between -40 to 80°C. - The desired cooling method is liquid cooling. Target degradation: Cycle degradation and calendar degradation Type of Battery Cells: - The battery cells being used are Lithium-ion. Ideal Skills and Experience: - Strong background in MATLAB simulation. - Knowledge of battery pack cooling systems and thermal management. - Experience in designing and simulating liquid cooling systems for battery packs. - Understanding of Lithium-ion battery cells and their thermal behavior. The proj...
I need to design a logo, business card, letterhead and brand name fonts for a Lithium battery Company.
Create connection scheme for home electricity project: - Fuel generator - AGM-battery - Solar panel - Regulator
Establish communication between battery charger and battery management system both of which adhere to CAN2.0 and their protocols are available. Through the communication, control the charging speed after reading status of the battery through BMS.
...who can make children car models but for real use. Design, technical design and details. So, we need: -design -technical draw, so that we can give to master who can do that At the end we will need 3-5 different car designs, but lets start with one. There for, body should be used for all models. Body should be easy to make, put together. Electric or gas engine. I also should know which engine, battery, steering wheels, suspensions, etc. you should show where is possible to buy them with nice price. body we will weld ourself. when you bid for project, please describe what you can do and please add some samples what you did some thing similar or how you see our project. First model should be like garden car- with buggy tires, but should looks like cars from 1930. please check pi...
Hello potential freelancers! We are seeking a skilled freelance expert to assist us in developing a metal detector using a Raspberry Pi and an ADC module. The project involves integrating a PI coil with the Raspberry Pi, implementing signal conditioning circuits, and optimizing the detection algorithm. The ideal candidate should have expertise in circuit design, Raspberry Pi programming, and experience with metal detector projects. Component List so far Raspberry Pi (e.g., Raspberry Pi 4 Model B) PI coil (compatible with the Raspberry Pi's ADC input) ADS1115 ADC module GPS Module Transmitter for sending real time data to PC
3- Project Outputs: a- The data will be saved to the computer in CSV file format. Each line in the file; time and the actual value (voltage or current) of the data read. b- A real-time graph will be drawn showing the time-dependent variation of the readings. c- Th...file format. Each line in the file; time and the actual value (voltage or current) of the data read. b- A real-time graph will be drawn showing the time-dependent variation of the readings. c- The reading program will be saved as a separate program on the computer (it will not be run with the software of Arduino or similar hardware interfaces). Codes will be sent as installation file. d- If circuit preparation is required for the project, PCB and necessary connectors will be developed, printed and integrated into t...
...simulate the circuit in Ansoft Designer and verify that there are no reflections on transmission line l3. The lengths of the line sections have the values l1 = 2.5cm, l2 = 1.25cm, and the characteristic impedances are. It is known that the circuit is working at the frequency f=3"GHz." Determine the value of the load impedance ZL, knowing that the line is terminated on a matched load. The project requires expertise in microwaves and transmission lines. Requirements: - Experience with Ansoft Designer - Knowledge of microwaves and transmission lines - Ability to work with ideal, lossless transmission lines Deliverables: - Simulation of the circuit in Ansoft Designer - Verification that there are no reflections on transmission line l3 Please note th...
...update the current location and battery percentage of the device to the database using API. We need the application to send this data to the DB at a fixed frequency with the capability to easily edit the frequency as per requirement. This frequency and the frequency mentioned in the previous point are separate and should not be linked. 5. A very basic UI will suffice, however, we need complete access to source codes 6. The application should be sending the data via api when the device is active. If the app cannot send data during doze mode we can work with that, however, as soon as the user opens the device, the application should start sending data on its own. No manual intervention should be needed. The application should start sending the location, battery, and app r...
