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Simple electric circuit design with MT8880C DTMF transceiver

€30-250 EUR

Complété
Publié il y a environ 5 ans

€30-250 EUR

Payé lors de la livraison
I need a simple circuit design based on the MT8880. See datasheet and screen shot from datasheet attached. You don't have to worry about micro controller connection, the most important part is this: The <DTMF Output> should be in such a way, that it can be connected to an android mic input (via headset audio jack) - so the signal needs to be correct impedance and level for mic input. Vice versa the <DTMF Input> should be designed in such a way, that it can be connected to android audio out (via headset audio jack as well). The circuit can be designed in any way - even a foto of drawing would be acceptable!
N° de projet : 19157959

Concernant le projet

7 propositions
Projet à distance
Actif à il y a 5 ans

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Hello, I'm just starting out in this field of freelancer, and for this reason the cost offered is the least since I have no references. For your peace of mind iIam an electromechanical and electronic technician, and I only have the thesis to be an electronic engineer. I work in an electrical testing laboratory, under international standards, im work here for more than a year ago. I think it could be of great help for your project, I am already at your disposal regards
€30 EUR en 1 jour
4,4 (3 commentaires)
3,5
3,5
7 freelances proposent en moyenne €148 EUR pour ce travail
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Embedded Software is my career and i have 10 year experience as an Embedded SW Engineer to Design a control unit for power wheelchair and i made more projects related to Embed systems. i want to try not for money only but further my experience and skills in Embedded Systems. I am Excellent at the following:  Embedded C Programming.  Microcontroller like Arduino,RaspberryPi,FPGA, AVR, PIC and STM32.  IDEs like Keil MDK V5, ATmel studio and MPLab XC8.  IOT Technologies like Ethernet, GSM GPRS.  HTTP Restful APIs connection for IOT Communications. I can deliver your project efficiently at a time. If you choose me, I think you won't regret. Best Regards.
€250 EUR en 3 jours
4,7 (31 commentaires)
5,5
5,5
Avatar de l'utilisateur
Hello I am an Electrical Engineer did MS in Electrical Engineering (Control System) as well. I have 4 years of Experience as well, also have 11 IEEE conference publications and 3 Journals with good impact factor. My major Expertise are: - MATLAB, SIMULINK modelling and simulation in Electrical and Electronics Engineering. - AutoCAD, Multisim, Eagle, Proteus, C/C++, Circuit designing, Engineering Mathematics and other Electrical Engineering subjects. - PCB Designing - Plagiarism removal, Research paper writing, Academic writing, Technical Writing. - VHDL/Verilog HDL, Xilinx, and FPGA. - Data Entry, Ms. Office, PDF conversion, pdf editing, copy typing etc. will provide - Professional solution - 100 % Satisfaction - In time and Budget - Professional Agreements - Can ship products in low cost - 100% refund on unsatisfactory work - All needed files Kindly check my portfolio and inbox me to discuss it further.
€155 EUR en 3 jours
4,6 (16 commentaires)
4,1
4,1
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I DO NOT OUTSOURCE I have been a freelancer for the past 8 years, I believe that my experience and skill in this background will prove to be of great help to you. Contact me to discuss more on the details
€150 EUR en 3 jours
3,4 (4 commentaires)
3,7
3,7
Avatar de l'utilisateur
Hello what i get from your project is that we have to generate tomes and you will give it to this controller to make a digital code. for example one tone at 697 and another tone at 1209 and then the controller detect that tone gives you a digital code of D0 = 1and rest D1-3 = 0 . let me know i am right or not. can you please more elaborate it. like what i get is you want a circuit just to generate these tone for all your 0-F bits. Looking forward to hear from you. If we chat then i can understand more. leave message if you are interested in doing work with me Regards.....
€155 EUR en 15 jours
4,6 (1 commentaire)
1,0
1,0

À propos du client

Drapeau de GERMANY
Unterhaching, Germany
5,0
4
Méthode de paiement vérifiée
Membre depuis mars 10, 2016

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