Audio AD / DA converter - Microprocessor -- 2

$250-750 USD

Concluído

Publicado

há quase 10 anos

$250-750 USD

Pago na entrega

Dear worker I need someone who can deliver me a frequency generator, called F14 as electronic solution. I need a electronical engineer which is able to deliver me a circuit board (Eagle format) with electronic on it. Virtual only. I have an audio synthisizer (wave generator from computer) and can create all wave signals from 100Hz to 10KHz. That is the input which drives your electronic. Your electronic receives the audio signal and interpret the wave form as binary values (250Hz = zero, 2500Hz = one). By interpreting these values as Bit, we can program your device, called F14 frequency generator. The F14 frequency generator will output a wave form signal as rectangle from 10Hz until 3Mhz with an peak to peak amplitude to 28V. The device will be driven by 5V only. DC converter is needed. The endprice for this product, case included should be below $30.- for production. Each item should cost me < $30.- for electronic and board and case. Quantity of 100. See the attachment. If you want to bid for this project, please write your microprocessor you want to use and please repeat in your words the project shortly.

Electrical Engineering

ID do Projeto: 5854081

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7 propostas

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Ativo há 10 anos

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@KoB0

Hello! This is interesting project. I'd like to use PIC16F886, PIC18F2550 or similar @ 20MHz (up to 48MHz for PIC18F2550 ). As I understand you need the F14 device which will be controlled by audio signal. The audio command is modulated by frequency (2500 Hz - logical 0 and 250 - logical 1, duration 60ms). The packet consist of start sequence, frequency, amplitude, waveform type, active flag and end sequence. I am planning to use digital potentiometer for the amplitude regulation. Some parts is necessary for DC-DC converter (it can be driven by PIC PWM). We can discuss details later. I will provide schematic, source code, and results of prototype testing.

$400 USD em 20 dias

0,0

(0 avaliações)

0,0

7 freelancers estão ofertando em média $1.723 USD for esse trabalho

@MikroStar

hi, i am an electrical engineer. i have expertise in embedded system design.i can help you with this project. The required functionality if the project can be achieved through a 8/16 bit MCU. i will prefer to use a Microchip processor. for my quoted bid i will provide: 1) schematics 2) PCB layout 3) Firmware 4) BOM and gerber files 5) one prototype system My milestone breakdown would be as follow: 1) initial upfront 40% 2) upon completion of the Prototype before shipment. 40% (shipment cost not included) 3) when you receive the prototypes and test it fully on your end. 20% Please check my profile for my previous work experiences. let me know if you are interested in the bid so we can discuss the details further. regards

$6.800 USD em 95 dias

4,9

(62 avaliações)

7,2

@cpp2048

The product could be designed by a DDS (DIRECT DIGITAL SYNTHESIS) and an accompanying micro controller. Micro controller will be used to sense the incoming frequency from the computer speaker and then will drive the DDS accordingly along with the mechanism to adjust the amplitude of the signal. MCU will also be used for charge pump mechanism for the 28V peak signal output. DDS will enable the frequency to be adjusted precisely at 1Hz (actually less than that) resolution. I will design the schematic and PCB layout as well as the firmware for the MCU. Do you need an assembled sample too ? Thanks ... I forgot to mention that the unit cost will be around 20$ max for the electronic part but as I roughly estimated, it could be somewhere 15$.

$1.500 USD em 30 dias

5,0

(17 avaliações)

5,0

@shahbaz1980

Hi, Have a Good Day. I can help you. I will provide simulations for the desired hardware using proteus. Choice of microprocessor will be decide during design phase. project shortly. project shortly. project shortly. Once simulations are done, we will continue with the actual prototype development. Once we started Chat i will explain the techniques to acheive the Task. Please feel free to contact. Best Regards, Shahbaz.

$750 USD em 30 dias

4,8

(19 avaliações)

4,8

@jacer81

Hello, Let me introduce myself I am yasir amir khan. I am electrical engineer, running an online consultancy business, with several years of project related experience. Please check out my profile. and search my name on web, I have also authored several books and papers. Please note: 1- I have a very high completion rate record this means hire me = your job done ! 2- I am offering the best rate in market. 3- Experience of working on numerous similar projects. 4- Best in the area of electronic designing, test me and you will agree! Thanks Yasir A.

$555 USD em 10 dias

4,9

(9 avaliações)

3,6

@adipdutt

I could not download the pdf file nor view it, I will try from another system,You output initially look like FSK=> //// Your electronic receives the audio signal and interpret the wave form as binary values (250Hz = zero, 2500Hz = on //// but I could not correlate ////The F14 frequency generator will output a wave form signal as rectangle from 10Hz until 3Mhz/// The processor can be ARMm0 series but I have calculate the MIPS before fixing the BOM and also have a clear idea, Thanks Adi Ok I got your PDF opened and now know,so re-bidding

$1.666 USD em 45 dias

5,0

(4 avaliações)

3,2

@PrateekRaghu

Dear timoboehme, I have good experience in Electronics Design as i am a embedded system engineer. Your project requires Atmega328P micro-controller from Atmel, This would accept the input wave form of 100Hz to 10KHz, this will be interpreted by the electronics which would be around above mentioned electronics and would output binary values depending on the frequency it detects from PC side device, to F14 as digital values. Also End price for the device should be below 30$. Kindly correct me if i am wrong. Please feel free to contact me to discuss about deliverable and requirements. Regards, Prateek

$388 USD em 10 dias