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    18,028 dtmf circuit pcb trabalhos encontrados, preços em USD

    Preciso de um projeto de PCB de um shield arduíno especial com alimentação externa e conexões RJ11.

    $18 (Avg Bid)
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    3 ofertas

    ...nas redesxde fibra ótica...um exemplo deste equipamento é a marca fiberhone modelo gpon 5506 ou a vsolution v2801 gpon...eu preciso do projeto da pcb e firmware... também tenho interesse em um projeto de pcb para patchpanel Preciso apenas dos projetos com os gerbers....bom file...o restante do processo eu mesmo faço obrigado...

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    Um circuito eletrônico que tenha como entrada de áudio tanto dispositivos USB quanto SD, com capacidade de repetição de som com dois timers programáveis distintos - um para a duração do período de silêncio entre as repetições e outro para a duração dos ciclos de áudio que serão repetidos. Os cicl...

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    Somos uma empresa de inovações tecnológicas e estamos em busca de um parceiro para um projeto de desenvolvimento interno. O .sch já está pronto, preciamos de alguém competente para distribuir os componentes de acordo com as especificações e montar a route do projeto.

    $146 (Avg Bid)
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    12 ofertas

    Criar esquematico de uma placa que leia transdutores de pressão nos protocolos I2C e 4..20mA, e que envie o valor desses sensores por GPRS, tudo integrado.

    $131 (Avg Bid)
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    ...web que faça as ligações; 2. Este sistema vai ler uma tabela do banco de dados o nome e o numero que vai ligar e gravará em uma outra tabela as informações de log, respostas DTMF e gravação do audio (se for possível); Exemplificando, tenho um sistema que funciona no cliente atualmente, faz um controle financeiro básic...

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    Identificar chamadas FXO vindas da operadora CTBC em DTMF. O serviço de identificação de chamadas está habilitado na operadora. Ambiente: Centos 7, com Elastix v.4, Asterisk 11.25, placa Openvox 1200p. Tenho conversor DTMF para FSK mas gostaria de trabalhar preferencialmente sem o conversor. Condição: Freelancer Brasileiro

    $140 (Avg Bid)
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    1 ofertas
    Layout de PCB Encerrado left

    Faço protótipos com arduino e shields, preciso criar uma placa com tudo integrado. Uma placa que consiga ler sensores 4..20mA, com microcontrolador e tenha uma tela pequena Oled para visualização dos valores dos sensores.

    $209 (Avg Bid)
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    ...deslocamento incremental. O trabalho em si será o desenvolvimento de um Encoder incremental. Já existe uma ideia inicial e será trabalhado o desenvolvimento do hardware (PCB) e o firmware para o microcontrolador com base nessa ideia. O sensor utiliza um transdutor ótico que transforma o movimento mecânico em sinal elétrico. Sendo que o sens...

    $70 (Avg Bid)
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    2 ofertas
    Projetista de PCB Encerrado left

    Projeto de placa PCB para Automação Residencial. O Circuito já está pronto em Protoboard.

    $167 (Avg Bid)
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    11 ofertas
    Projeto de PCB Encerrado left

    Transformar um projeto de circuitos de Automação Residencial feitos em Protoboard em PCB. Caso o projetista não resida no Rio de Janeiro, o projeto poderá ser feito via Skype. O software utilizado no projeto foi o Proteus e em caso de necessidade, uma copia da Protoboard original será encaminhada ao projetista.

    $310 (Avg Bid)
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    15 ofertas
    asterisk dtmf Encerrado left

    Gerar um arquivo com os dados de log dtmf do asterisk e enviar por email com variantes

    $447 (Avg Bid)
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    3 ofertas
    Layou PCB design Encerrado left

    Ofereço soluções para protótipo e,ou produção de Hardware, com auxilio de ECAD (Electrical Design Software) tanto para captura de esquemático e PCB layout. Conhecimento com ferramentas da Mentor Graphics e Proteus professional.

    $35 / hr (Avg Bid)
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    7 ofertas

    Olá Hoje possuo 1 servidor que...eu escolho 1 contato da minha agenda, ele disca para um número específico do meu servidor. Meu servidor retorna a ligação por outro(s) número(s), e após isso precisa enviar o dtmf do contato selecionado no inicio para a disa completar a ligação. Pode haver necessidade de inserir algum digito ant...

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    placa 10x8cm smd pcb/pci já tenho ela em schematic no eagle, falta rotear.

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    1 ofertas
    Caller ID project Encerrado left

    PCB as discussed

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    1 ofertas

    Desenvolver um circuito para converter sinais DTMF para FSK, utilizando a própria energia da linha telefônica. O serviço inclui o design da placa de circuito impresso (não a fabricação). Também deve ser provado que o mesmo funciona perfeitamente.

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    Project title: LED Lighting in residential and commercial lighting applications Aim: Design of driver circuit for LED's used in domestic and commercial lighting. Objectives: 1. Understand the operation of LED's and the technical aspects of LED’s used in domestic and commercial lighting applications. [login to view URL] about the various constraining aspects

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    6 ofertas

    Hi I have allwinner a13 chip I need a pcb designer to design a minimum system board for this chip Allwinner a13 core and a Ddr ram and a band flash chip I need altium pcb file External links [login to view URL] [login to view URL] [login to view URL]

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    To correct the existing errors for in the design & make new one

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    ...multimedia devices such as Wireless headphones, Portable and wireless speakers, Multimedia players, Digital set-top boxes, communication equipments such as antennae and Printed circuit board incorporating integrated circuits and initially I am planning to manufacture smartphone chargers only and later go ahead with other electronics products as I mentioned

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    Hi, I need a PCB designed with CAD files to send to a PCB fabricator to have it manufactured. It is a rather simple PCB, nothing too complicated. It's basically an Off the shelf constant current driver module and some Phoenix style connectors with some LED indicators. I've bread boarded the driver itself minus the indicator LEDs. I also need a method

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    ...and build a working PCB. The circuit should work in the following way. A small wearable solar panel charges a flexible Lithium battery of 50-100mah. When the battery is full it dumps its charge wirelessly (through induction coil) to a cellphone with wireless charging capability. And the cycle begins again. As space is limited, the PCB must be on a flexible

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    Verify if my circuit is correct and guide to resolve the errors. Measure the gain of an inverting amplifier at an input frequency through Experiment and print out time-domain input and output waveform

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    This project requires the use of Matlab to calculate several parameters of a distribution network. Background knowledge on fault current, circuit breakers, current transformers are needed. Please make offer for more details.

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    I am designing a system to detect a baby cries with a microcontroller, Arduino Mega. I need someone to design a circuit or guide me what kind of sensors is able to detect baby cries. I have bought a SparkFun sound detector but it seems that it doesn't sense the cries.

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    wireless Power transmitter &Receiver Specs Input - 12v Output - 5v / 3A Tx rx coil distance - 5mm Tx rx coil diameter - 100mm Circuit cost should be minimum

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    Hi All, I'm looking to work with someone to design a PCB board for a GPS Module and suggest potential components. The module will be battery powered ( Not LiPo), need to have low power consumption, be able to run some code (max memory approx 20,000 bytes). It will work with a Tri-Band LTE-FDD and Dual-Band GPRS/EDGE module solution, most likely the

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    10 ofertas
    PCB Design 5 dias left

    Hi All, I'm looking to work with someone to design a PCB board for a GPS Module and suggest potential components. The module will be battery powered ( Not LiPo), need to have low power consumption, be able to run some code (max memory approx 20,000 bytes). It will work with a Tri-Band LTE-FDD and Dual-Band GPRS/EDGE module solution, most likely the

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    3 ofertas
    Network Technology 4 dias left
    VERIFICADO

    Packet switching, message switching, circuit switching Calculating tine taken to transfer data  under different switching schemes Application  layer protocols DNS, http, smtp, ftp Reliable protocols(sliding window schemes) TCP protocol details connection  setup and tear down RTT estimates flow control congestion control

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    I'm looking for someone to develop the circuit with a Hall Effect sensor (something like that) with Wi-Fi. This design will be used to check if the door of a safe is closed / open. Basically the circuit will be off to save battery, as soon as the state is changed, the circuit will be turned on. I intend to program the device, I have preference in ESP

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    I am searching for an electronic hardware engineer who can work together with my team in The Netherlands and China for the schematic design and PCB layouts in Eagle.

    $6 / hr (Avg Bid)
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    ...herewith and finally I want any of those types of cabinet. Kindly provide its 3D drawing consisting of accurate size or dimensions of outer cabinet along with accurate dimension of PCB to be placed in it. Some other details I will share later while discussing before awarding you this project. Also in the end along with all other files, provide all the documents

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    21 ofertas

    I would like a circuit which can control all types of camera releases detailed on the website below: [login to view URL] I would need a circuit where if I apply 3.3v then the shutter is released. !!!The tricky part is that my project has to be low cost, and without a relay. This means that using BJT transistor is difficult

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    Electronic system for commercial purpose

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    I need help to design a small portable charger with two PCB's, one for USB, one for wireless headphones. Need help to make sure unit doesn't overheat as it will be quite compact. Have attached rough drawing below. Any questions, please ask. Patrick

    $12 / hr (Avg Bid)
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    PCB Design 4 dias left

    Hi All, I'm looking to work with someone to design a PCB board for a GPS Module and suggest potential components. The module will be battery powered ( Not LiPo), need to have low power consumption, be able to run some code (max memory approx 20,000 bytes). It will work with a Tri-Band LTE-FDD and Dual-Band GPRS/EDGE module solution, most likely the

    $388 (Avg Bid)
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    20 ofertas

    Hi Khang N., I noticed your profile and would like to offer you my project. We can discuss any details over [login to view URL] Voltage Electrical Control Circuit Design and Component Selection

    $1000 (Avg Bid)
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    1 ofertas
    Trophy icon Build a GIF from an existing logo 3 dias left

    ...analytics services. AQ Boost means "Boosting Analytics Quotient". As you can see the logo represents a brain, the left part being a "normal" part and the right part an electronic circuit. I would like to have an animated picture (GIF format) derived from this logo. The animation should somehow be linked with the idea of the logo Here is one example. Do not

    $34 (Avg Bid)
    Garantido
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    19 inscrições

    ...4 channel mosfet board, NI DAQ 6341. Attached please find the previous schematics which my team lead has shared with me. he asked to com up with some ideas or design the circuit because it has some flaws in it. The op amp will burn out for some reason, the input signals are coming from CRANK and CAM Sensor 5 volt square wave and feed into op amp. Rest

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    22 ofertas
    Internet Technology 3 dias left
    VERIFICADO

    Packet switching, message switching, circuit switching Calculating tine taken to transfer data  under different switching schemes Application  layer protocols DNS, http, smtp, ftp Reliable protocols(sliding window schemes) TCP protocol details connection  setup and tear down RTT estimates flow control congestion control

    $39 (Avg Bid)
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    5 ofertas

    I am an experienced electronic engineer and co...start up companies as well. I am partially retired and have been designing electronic products for model railroaders. I need to reduce manufacturing costs by having printed circuit boards assembled (surface mount components) overseas. First step is to find the sources (Taiwan? China?) and get quotes.

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    ADC
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    10 ofertas

    I need a pcb designer to design touch switch for home

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    20 ofertas
    PCB designer 3 dias left

    I am looking for a PCB designer

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    The circuit is inside of an electrical plug supplying power to a battery charger. I need someone with the right equipment to record the communications between this circuit and the charger. I will provide you with the battery charger and the plug, with the cable spliced to enable tapping into the signal wires. The communications occur upon plugging in

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    Need Eagle Expert 3 dias left
    VERIFICADO

    I have a image file of circuit. i want to make the Eagle sch and BOM. I attached the image file. your task is to draw sch on eagle and make BOM I recommend the digikey and mosuer for BOM. I hope your good response. Thank you.

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    Small PCB design 2 dias left

    I need a small circuit board designed to charge a pair of 18650 cells and proform switching. Please contact for more details.

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    32 ofertas

    I need a circuit board designed, built and tested. This design will be placed in a small container with a power source, an indicating LED, on/off switch. The circuit will make an audible sound (Sound could be selectable) when the circuit is closed.

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    Abt. 30 $ project. Some test i have, but unsure about how to handle it. Can you help me.

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    I need to help me design electronic circuit and take values

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