simple audio ADC

I would like to build a single line audio ADC on a teensy 3.5. that will convert to line audio signal to a VU reading.

Line Audio =~ 1.7v AC

In the uploaded images, the sin looking wave would be the original, and the other would be the result at full amplification. A simple electrical circuit should be ale to achieve this.


- Teensy 3.5 using the arduino IDE

- Adjustable peaks with 100k linear potentiometer

- a cheap opamp, maybe an OPA344

- 1/4 inch TRS audio jack for input signal

I would like the teensy 3.5 to be able to read the analog signal and to power the circuit. This will more than likely need to convert the 3.3v DC output of the teensy to 5v DC.

Must be able to communicate in written english.

Skills: Electronics, Electrical Engineering, Arduino, Microcontroller, C Programming

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About the Employer:
( 0 reviews ) Denver, United States

Project ID: #21889910

7 freelancers are bidding on average $61 for this job


Hello! I am very interested in your post project. While I read your description carefully, I was excited with feeling that I would be able to satisfy for your requirements in this job. We can negotiate on price/Budget More

$55 USD in 1 day
(9 Reviews)

I can do this ADC convertion project for you immediately if you accept. I am experienced with Arduino and PICç

$50 USD in 7 days
(7 Reviews)

TL;DR: This project is simple enough to do it in a couple of days. I can work on this before you even accept this deal. No strings attached, you can pay after that, this way you can see how I work without risk. Just le More

$35 USD in 3 days
(2 Reviews)

I have quite a lot of experience with the Teensy. In fact my experience spans around a decade in total. I will get your project done with the best results.

$110 USD in 3 days
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20 years experience in Microcontroller Projects. Relevant Skills and Experience Embeded software. Microcontroller. Electronic Ckt design and PCB layout expirence.

$45 USD in 10 days
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I've quite experience in C/C++/Embedded Software Development. If you are interested please contact me directly ahmedmohamedgalal.94@gmail. So I can get a better idea about the project and your requirements.

$80 USD in 6 days
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Hi, I am Bilal Tariq CEO of GRIMTECH ENGINEERING. representing my firm here on GURU! Please see my profile & portfolio for our job success and previous projects. Also, see attached work samples related to this job!  G More

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