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    16,213 circuit design 份搜到的工作,货币单位为 USD
    Voice recording device 6 天 left
    已验证

    I want voice recording device ( module with speaker) in Flexible circuit(PCB) board with minimum size and better effectiveness.

    $177 (Avg Bid)
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    21 个竞标

    ...probably running a little less than the maximum rated output. Your circuit should be able to select the 20v output from the PD provided a suitable cable has been used Your circuit most safely charge each battery in line with the manufacturers specification and also balance the two cells. We are currently using purchased boards that are not giving all the above features. We have also been having quality issues particularly when components have been substituted with recent chip shortages. We are looking for a new design which you can base on a suitable battery charger IC from a respected source such as Texas Instruments or similar, please advise your intention in this respect. Please advise the price you need for the design and supplying all the productio...

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    We are a 22 years old electronics company. Looking for electronic engineers for reverse engineering and improvement of existing circuits. Freelancer should have deep knowledge of both analogue and digital electronics components and capability to trace the circuit diagram from existing PCB and then redesign the new PCB with improvements. Experienced electronics engineers with design & development background will be preferred. We have continuous work flow for 12 months. Our projects include LED based lighting system for critical application, power supply for LED lighting, various types of signal amplifiers, RF based circuits etc.

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    10 个竞标

    We are a 22 years old electronics company. Looking for electronic engineers for reverse engineering and improvement of existing circuits. Freelancer should have deep knowledge of both analogue and digital electronics components and capability to trace the circuit diagram from existing PCB and then redesign the new PCB with improvements. Experienced electronics engineers with design & development background will be preferred. We have continuous work flow for 12 months. Our projects include LED based lighting system for critical application, power supply for LED lighting, various types of signal amplifiers, RF based circuits etc.

    $7 - $18
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    0 个竞标

    Dear Please create me electrical panel schedule template as per the photo for branch circuit in revit.

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    3 项参赛作品

    I have pt100 temperature sensor signal connected to plc put the signal is not stable as there is many noise come from vfd so I need low pass filter circuit to enter the pt100 signal on it to make filter of any other noise

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    Plesse see the the logo attached to go on one sude of the business card and back side following details. Wholesalers of premium quality hybrid flooring, all kinds of interior cladding) Address factory 2/51 hallam south road hallam 3803 7 tango circuit, pakenham

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    129 项参赛作品

    Hi I need a motherboard PCB with a DC DC converter from 12V to 5V. It will be attatched to the motherboard: * Rasberry PICO * Can PCB * 6 buttons * 9 LED The DC DC converter need to have short circuit protection and the Canbus connector need TVS diode. Se the files for more information. Step 1. Make a chematics Sted 2. Make a PCB with production files

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    Pair a gas sensor ( Bosch) with any raspberry pi device.

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    Note: I'm looking for developers that have previous experience with GreenPak ICs I have a sensor that consumes ~300uA at 3.3v and I need to reduce it's power consumption by duty cycling it. The GreenPak design will need to power up the sensor, read the differential analog output, store the number of changes in a counter then power down the IC. The counter will be available via I2C for an external CPU.

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    This is a project optimization of the old version of circuit. Main part is to replace the SIM808 circuit with MC60. Details have been provided.

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    I need a soldering job USB port has come off cleanly from a circuit board. I need to bring this to you and have you do the work. I don’t really want to post away if I can help it.

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    need 3 3d graphics : Floor plan - AHU ( air handler unit with chilled coil valves, need to see coils - ventilators and filter animations) - Chiller ( Air cooled scroll chiller model 2 circuit, need to see compressor and ventilator animations

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    We need to build a circuit to read the rfid card as per the attached requirement document.

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    ...Return in Davidson County Tennessee Circuit Court. E. The lawyer I hired for petitioning the IRS and representing me in US Tax Court was from Utah. They have helped me build my case and have recommended I pursue this in Tennessee circuit court. However, because they are based in Utah they are unable to represent me in Tennessee. F. Since this case has already been won in federal tax court, I intend to represent myself in Tennessee circuit court. I have already built my case with my lawyer in Utah and have prepared all of our evidence, written my plaintiff statements, and have prepared questions for witnesses and the defense. G. I have attempted to sue the bar and grill using the Tennessee eFile court system website on my own. However, filing a case in circuit...

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    We are looking for a long-term agent with knowledge regarding small electronics systems and projects of varying size based on single-board computers (SBC) and other small circuit board solutions. Our prototypes and devices include touch screens of varying sizes, single-board computers (Raspberry Pi, Libre Computer, Arduino), Large capacity batteries and other small circuit boards and components as well as circuit switches. The expertise we require relates to designing and building an working prototype for the company. By using the aforementioned parts in order to make. For example. A portable gaming platform powered by single-board computer (SBC) ie. Raspberry Pi, a chargeable large capacity battery, buttons and touch screen. Expertise regarding the operating system...

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    I need a control system for the liquid level in a tank. Use two sensors (wires); one at the bottom and one at the top. Once the liquid touches the two sensors and stays like that for 5 seconds, the Arduino card should be able to "read" it and turn a 5V pump on. And the other wa...bottom and one at the top. Once the liquid touches the two sensors and stays like that for 5 seconds, the Arduino card should be able to "read" it and turn a 5V pump on. And the other way around for turning off the pump. Potentially usable additaments are welcome. Now, think about this 1-tank but for 8 independent tanks and assemble it the simplest and most elegant way you can. I will require the circuit diagram, the program to feed into Arduino (with comments for mortals), and the li...

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    1mA current source 2 小时 left
    已验证

    Looking for knowledgable guy to help with 1mA current source circuit

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    We are electronics product design and development startup where we can design and provide circuit board (pcb)/hardware as per electronics manufacturers’ product applications. In short, we can provide pcb as per manufacturers’ requirement. Also, for any technical project if customers need hardware or pcb for their project development, we can develop and provide pcb for that as well. So we are looking for customers who may be electronics product manufacturers, tech enthusiasts, electronics OEM manufacturers from consumer electronics, healthcare, automotive, power, LED lighting industries, telecom, iot industries across the world. So, need to contact purchase department of target companies and do telemarketing and convert to sales. Also, need to prepare quota...

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    This project is based on the save power concept, in bathrooms, we turn on lights and forget to turn them off which leads to power wastage .to tackle this problem we need to set the delay to lights to means after 7 -10 min of turning on the light it will automatically turn off, need to design a circuit to solve this problem

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    The board needs to charge a lipo battery using a small solar panel

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    We are looking for an Embedded System Engineer who will make the hardware and software of the electronic circuit board that can communicate with vending machines. 5 years of experience in circuit board design is required. Must be able to make the software of the card; - FreeRTOS - ESP - MCU - MDB - Power Tier - GSM Module should be able to use technologies such as Write OE at the beginning of your offer for fake applications

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    Portable Power Supply 已经结束 left

    ...power supply and I need a PCB created to control it. I would need it to have a buck boost circuit that could do 0vdc-60vdc @5amps as well have a current limiting feature for testing equipment, etc. & perhaps digipots to control the output voltage and current limiting digitally through the menu. I also will be using a TFT LCD to display a menu & to show voltages & current draw, so using an STM32 to drive & control all the logic would be preferable. Im not sure which batteries would be best to use in this so achieve the desired power outputs that I want so perhaps you may have some suggestions for batteries but for whichever batteries it would need a BMS and all protections as well with a USB C recharging circuit for recharging it & finally a power switch...

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    We have a circuit that is made to teach students coding and electronics. The circuit file is attached () and we also did a mockup to give you a sample of what could be done (). To give you a better idea of what a circuit would look like, you can see the older product here Requirements: * start with "" file and import into illustrator. Do not modify anything in it. Only add the requests below. * size the circuit to 120x60 mm * add artwork in WHITE ONLY, no gradient is used. * All added art must be vector * Must include logo (attached) * Must include "BrainPad X" * Must include "Rev. A" * Logo should be larger than the name "BrainPad X", see mockup * The right buttons must be labeled "SPACE" and "CLICK&quo...

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    81 项参赛作品

    I would need Simple circuit design that does the following 2 tasks for a 5V arduino pro mini 1. Power the Arduino (5V) from a car Battery (12-16V) including protection circuit. The Arduino should keep Power for about 5 seconds after the Battery power is switched off 2. Take a 12-16 V square wave and reduce it to a 5V Square wave via a opto coupler so it can be used with a digital input I don't need a PCB Layout

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    proficient speedy PCB design Engineer with experience in High Speed Routing length matching USB SS 3.1 technology layout needs to be transportable inside Altium Room for easy placement into our other designs Proto layout should be on a 1.2mm thick JLC Stack with Imdiance control and be no more than 18mm wide by 60mm long on a 4 layer very Clean layout following all TI guidelines for routing and part placement , Vbus power and CC lines need to be easily accessible from right side of board so we can connect to our existing PD controller signal path and Power Parth (please see iame of proposed layout image () easy filtration circuit for Vbus and proper CC line entry into circuit Fairly stright forward USB type C to type C PCB with Repeater ICs Need Completed and

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    Circuit should be of 4inch by 3inch with memory card (memory card cannot be acessible from outside it should attached with pcb inside its case,hence we cannot remove from outside so there should not be any slot ) Feature of wifi and bluetooth. power supply 3.7v 3200mah rechargeable battery, TFT and endoscope camera. TFT comes with 54 pin details will be shared and camera comes with 4 wire selection of microcontroller should be affordable endoscope camera should be used for streaming live video. endoscope camera(camera comes with its own module ), no need to develop extra components for it . camera should be drag outside with wire away from the pcb (length of the wire will be of 8 inch). there will be on/off button ,backward and forward button, wifi button. programming required ...

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    Electronics expert 已经结束 left

    I'm looking for an electronics expert to help me work out how to automate functions on a circuit board. If you understand the attached board and how it works message me for further details on exactly what I'm looking to do.

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    I have 24 bare circuit boards which need assembling. There are a range of components to solder, but most are SOICs or 0805 parts. No BGAs, QFP or other fine-pitch components. Looking for someone who can do this assembly in their own location, preferably near Milton Keynes in the UK. Must follow anti-static precautions and best practice. Likely to be around 70-90 hours work in total.

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    This project is for an Electronic Engineer and a Circuit Designer. I require speech of 8KHz sampling 8 Bit will do, for 32 messages of differing lengths. The messages will be recorded via a simple Microphone, and uploaded digitally for some pre-recorded messages. A PIC micro should be used and some easily obtainable memory to store the data should also be used. If improved quality of speech can be made by increasing sampling rate or bit count or any filters etc.. these should be considered; but must be low cost.

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    This project is for an Electronic Engineer and a Circuit Designer. I require speech of 8KHz sampling 8 Bit will do, for 32 messages of differing lengths. The messages will be recorded via a simple Microphone, and uploaded digitally for some pre-recorded messages. A PIC micro should be used and some easily obtainable memory to store the data should also be used. If improved quality of speech can be made by increasing sampling rate or bit count or any filters etc.. these should be considered; but must be low cost.

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    Build me a circuit with Ldr sensor for streaming audio(microphone) via esp 32, power supply will be through 3.7v rechargrable battery 1000 mah, start with push button and one jack for earphone.

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    ...Trafostationen die Stromlaufpläne / Singleline Diagramme zu erstellen. Sollte aber auch Ahnung von Mittelspannung und Niederspannung haben. Autocad und Eplan sollte er beherrschen. Und es liegen aktuell 10 Trafostation. Heisst aktuell 10 Projekte. MFG Orwi Technik Hr. Halatta --- Hello, we need an experienced Eplan / Autocad designer for our projects. The task is to create the circuit diagrams / single-line diagrams for the transformer stations. But should also have an idea of medium voltage and low voltage. He should master Autocad and Eplan. And there are currently 10 transformer stations. Currently means 10 projects. MFG Orwi Technik Mr. Halatta...

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    We require a PCB designer to layout a PCB for us. The test circuit has been developed on an STM32 Nucleo-144 MCU Development Board, NUCLEO-F767ZI. You will be required to draw the full circuit based on the development board and then after approval, layout the PCB in accordance with the circuit diagram. I am reposting as time got away with me late last year. Want to award by the end of the week. PLEASE READ THE ATTACHED DOCUMENT. IF YOU DON'T READ I WILL DELETE YOUR BID.

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    Hello... I want someone who know how to get data from circuit and sensor, i want to get data from weaving machine and want to store that data in central database, i have machine monodirectional interface of machine, let's discuss more if you can help me... Thank you

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    PidController arduino 已经结束 left

    ...heating control project that uses an Arduino board and a motor-controlled valve to regulate the flow of hot water from a primary circuit to a secondary circuit. The primary circuit is connected to a source of hot water (fernwärme/district heating) that maintains a temperature between 60 and 120 degrees, and a permanent pump that can not be controlled or regulated. The secondary circuit is also connected to a constant-speed pump and the goal is to maintain a temperature of about 40 degrees. I have implemented a basic control logic using switch cases and if-else statements, but I am having trouble getting the system to accurately regulate the temperature of the secondary circuit. I have read that using a PID controller can help improve the performan...

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    I am in the pre-prototype stage for hacking together some AR glasses. I don't need any circuit design. I just have questions about what parts to select and how to get to the prototyping stage. Let me know if I need to provide clarification for anything. I am open to getting on a call. I have attached a pdf that includes my questions and design goals for the project to this posting.

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    • To develop a full lighting scheme for issue to contractors: To include circuit diagrams, switching and arrangement of fittings • To practise the production of detail drawings to compliment the lighting scheme • To practise full specification of all fittings, lamps and switching • To comply with current safety regulations Let me if you need any information to understand the work

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    Need help in drafting an electrical circuit diagram for a project on autocad.

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    CVG art creator 已经结束 left

    We are a startup aiming at selling SVG cut files for circuit, fonts and watercolour clip art , we need a creator who can create designs in AI, DXF, EPS, JPEG, PDF, PNG and SVG format .

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    This website will be response to mobile phones. Should work with both android and apple OS Website design description Page 1 or Welcome page Option 1: White background with either fireworks or confetti with the following message. “Congratulations on the purchase . Mother earth and future generations thank you. Option 2 : Rotating earth with a background sound of birds flying around and wind blowing through a deep forest with following message. “A typical passenger vehicle emits about 4.6 metric tons of carbon dioxide per year. Thank you for choosing an EV” Let us get you set up with a EV charger and you can roam the world guilt free. Page 2 This page will have a white background with the following text. Please enter your home zip code There will b...

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    We are looking for a long-term CAD draftsman who will help us develop our products. Right now we are lookin...improve existing casing/box of our product. It is made from sheet metal (1 mm aluminum), cut and bent to shape, and then assembled with rivets. We would like it to be a lighter and easy to install and design you make will be used to make 500 pieces. The main focus of your work in inside the box. Please answer to this question (since we do not read offers that are created by automatic bots, so we ask something that has nothing to do with the business to see if the text is read by a human): is horse bigger than computer. Outside can be as it is. The box contains circuit boards, a power supply and a screen. Please give an example of your pricing and some works you have ...

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    I've manufactured and patented a musical keyboard wrapped around a pole using membrane switch technology. I would like to create a new thinner keyboard using 3D printer technology. I need someone with expertise in 3D design and materials to create a design based on my old membrane switch flex circuit designs. I envision a rubbery flexible material used in tandem with conductive ink, which can be wrapped around a pole. Here's a one minute YouTube link showing the instrument I've built and play (using membrane switch technology) and then a mockup of the thinner 3D printer version I hope to make-

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    We are looking for a long-term buyer/purchasing agent with knowledge of electronics. We make prototypes and small batches (10-500 pieces). Our devices include touch screens, single-board computers, batteries, LEDs, and small circuit boards. We are also working on smaller devices. Sometimes you will help us choose prototype parts. In this case, the price of a large batch is not very important, but how to get one or two pieces quickly and reasonably for testing. The main work is to ensure that the parts have the necessary features and that they actually work. For example, we currently need a PowerBank + trigger-USB cable that supports PD/QC fast charging, so that we can get power out of both 5V USB cables and 12V USB cables, with sufficient amperage in both. A test batch (5-20) means ...

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    PCB Designing 已经结束 left

    need help in designing a circuit for a robotic arm with 5 servos, need an external battery and power

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    I need a driver circuit design for a 7.5 kW three-phase asynchronous motor.

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    Schematic and printed circuit design of a board based on ESP32 devkit must v1 with 6 5V TTL compatible output - power from 110VAC -> +5V DC - protection of the power supply unit against overvoltages and overcurrents - EMI filtering - EMBCIRCUIT is committed to delivering source files (Schema, PCB, PNP, BOM)

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