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Design a Voice Record circuit

$30-250 USD

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Dibuat hampir 7 tahun yang lalu

$30-250 USD

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Hi, I am working on a project that I need some electrical engineering support with. Project scope: A simple voice recording circuit that plays back voice or beep when a button is pressed. Requirements: 1) Button 1 shall be pressed to record a minimum of 5 seconds of audio. Button 1 is a right angle board edge button 2) Button 2 shall be pressed to playback audio or beep. Button 2 is a vertical button positioned somewhere near center of board. Recorded audio will playback twice for each press of the button. Pressing the button during playback will not interrupt or restart the playback. 3) Switch 1 shall be able to switch from playing back the recorded audio to playing a pulsing beep/alarm noise from a piezo buzzer or similar. Switch 1 is a right angle board edge switch. 4) An LED will pulse a few times a second during playback. 5) Circuit shall operate at 6V or less and be able to handle voltage up to 6.5V. Supply batteries will be 2 X 3V 2032 cell batteries. 6) The circuit must be able to be manufactured to the roughly the diameter and size of a US quarter. I have a schematic I started with arduino attiny85 but believe can be done without programming, but rather logic and timers.
ID Proyek: 14173305

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23 freelancer menawar dengan rata-rata $170 USD untuk pekerjaan ini
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I am an Electrical Engineer having specialization in Electronics and Control, teaching at Electrical Department FAST National University Pakistan. I am also persuing my MS degree in Electrical Engineering with specialization in CONTROL. I have taught the followings courses, and also done many projects related to these subjects as well as related to consumer electronics products. 1. Control System Design & Modelling (Continuous, Discrete, Linear, Non-Linear, Optimal, Fuzzy Logic + Matlab & Simulink) 2. Digital System/Logic Design (Verilog, VHDL, Logisim) 3. Digital Signal Processing (MATLAB) 4. Micro-controllers (8051, Arduino, PIC) 5. Power Electronics (PSIM, MATLAB, PSpice) 6. Control of Electric Machine Drives 7. Circuit Analysis and Designe etc 8. PCB Design (Proteous + Ultiboard + Altium Designer) I assure you, if you assign your project to me, you surely gonna work with me in future. Note: I also provide the services in Mechanical Engineering Projects.
$200 USD dalam 3 hari
4,8 (275 ulasan)
7,2
7,2
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A proposal has not yet been provided
$247 USD dalam 4 hari
4,9 (229 ulasan)
7,3
7,3
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Hello Sir/Madam, I am Anthony Perera from Sri Lanka and I have multiple degrees on Engineering field. Why you should hire me ? * I am a FULL TIME freelancer and once a project is awarded to me,all my time will be dedicated to that specific project so you will get fast and quality work. * I have been in the field of product designing so if you are developing a commercial device I can help you to design it at very low cost and also can get into contact with Chinese manufacturers who I work with. Very reliable and fast. * I have my own PCB printing facility and also a workshop where I can design and manufacture any number of samples/prototypes. In that way you don't have to find some one else to test my work. * My prices are very fair and can be negotiated all the time. I am very flexible and very understanding. You can see my reviews. Check my profile. See for your self. https://www.freelancer.com/u/Anthony989.html Thank you Anthony Perera
$244 USD dalam 3 hari
4,8 (53 ulasan)
6,4
6,4
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Hi Sir, WE are expert engineers who deals with arduino and similar systems from last many years. We are professional engineers and developers who do such projects from the last eight years. We offer you our skills for this project at very low rates comparatively without compromising the quality of work. Let me introduce you to our company TURKTRONICS. We are TURKTRONICS. We are professional with 8+ years of experience in Circuit designs, PCB designs, embedded system solutions, mobile app development, programming and software development. We provide complete end to end solutions for all kind of development projects. IOT is our strong point. In this bid, prototyping and shipping cost is not included however paying extra slight of money to include prototypes. We have collaboration with Atechcircuits in Shenzhen China for excellent quality PCB manufacturing. We care about our clients and help them to get out of any potential problem throughout the projects and also give post completion technical support if ever required. We are very much looking forward to hear from you on this in coming days! Cheers!!! Ahmad Lead Technical Engineer TURKTRONICS An Internet of Things Company
$200 USD dalam 8 hari
4,8 (39 ulasan)
6,5
6,5
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Hi, Can you please share your project requirements/task expected from us. About us: Micro-controllers we have worked on PIC, STM32, PSOC and AVR. Development kits and instruments available for testing purpose. For PCB designs we use KICAD. C#, LABVIEW, Python for GUI, Controlling or Datalogging purpose. Thanks and Regards, Santosh
$250 USD dalam 10 hari
4,8 (5 ulasan)
4,0
4,0
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I am an Electronics and Electrical Design Engineer with the areas of expertise in Embedded System, product prototyping, PCB design and layout and firmware development for systems. Experience: I have worked with different topologies for DC-DC, AC-DC, DC-AC converters. Completed a lot of projects based on MCU - ARM - STM32, AVR, ESP8266, PIC, ARDUINO. I have knowledge and working experience with interfaces - RS-485/232/422, Wi-Fi, Bluetooth, SPI, I2C etc. a lot of sensors, peripheral ICs. Software proficiency: • AUTOCAD • MATLAB • PROTEUS Design Suite • ARDUINO • ALTIUM Designer • KICAD • ESP8266 Gaining your trust is vital for me because I want to make friends on freelancer. I am available 24/7 and can start your project as soon as possible. If interested please contact me to talk in more detail about the project and define our milestones.
$155 USD dalam 3 hari
4,9 (13 ulasan)
4,0
4,0
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A proposal has not yet been provided
$277 USD dalam 8 hari
5,0 (6 ulasan)
3,1
3,1
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Hi, I am an electrical engineer and I am currently doing a project similar to yours. In my project, I am using Arduino to playback audio/music and turn timed LEDs on based on user input. We can discuss more in the Inbox. Looking forward to hearing from you. Regards.
$133 USD dalam 7 hari
4,7 (5 ulasan)
3,2
3,2
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Hi sir I am an experienced system designer and I have done similar design earlier
$166 USD dalam 10 hari
3,3 (6 ulasan)
4,1
4,1
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Dear Customer, I am a professional Hardware engineer with 9 Year experience in Embedded System, product prototyping, PCB design ,Production,EMI/EMC certification . Currently working in a MNC as architect and freelancer is my evening job. I have given with less cost and more time. Since i want to commit the feasible proposal. Request you to start a chat section. I will provide detailed proposal in word document Regards, Rose4545
$45 USD dalam 15 hari
5,0 (1 ulasan)
1,3
1,3
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hi, sir i am here to help you i am Electronic Engineer. Strong circuit skills. give me a chance to serve you.
$88 USD dalam 6 hari
0,0 (0 ulasan)
0,0
0,0
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A proposal has not yet been provided
$30 USD dalam 7 hari
0,0 (0 ulasan)
0,0
0,0
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FREELANCER RECOMMENDED ------------------------------------------------------ Can help... I am an Expert... Lets Start! Please start a Discussion with me and we can get started from there... Please check the past projects I have handled and check my reviews for what employers have to say about my work... Can start right now...
$155 USD dalam 3 hari
0,0 (0 ulasan)
4,6
4,6
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it is important that selected items must be ultra low power.........................................
$166 USD dalam 3 hari
0,0 (0 ulasan)
0,0
0,0
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A proposal has not yet been provided
$150 USD dalam 5 hari
0,0 (0 ulasan)
0,0
0,0

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Bendera CANADA
Wilkes-Barre, Canada
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Anggota sejak Des 6, 2013

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