Analog Electronics, 555 timer as VCO and a board

Completed Posted Jan 18, 2013 Paid on delivery
Completed Paid on delivery

Hi,

We want to make a simple device. It's a sensor connected to a 555 timer acting as a VCO. There is also a simple NPN transistor which is sometimes turned on. The whole device is operated using usb power from a cell phone and the audio input/output of the cellphone. The audio turns the NPN transistor on. The audio records the output of the 555 timer.

We also need a board designed.

It should take less than a week to complete the project. We will discuss it in more detail if you have a nice bid.

-Brian

Electrical Engineering PCB Layout

Project ID: #4140388

About the project

15 proposals Remote project Active Jan 25, 2013

Awarded to:

MIKY4227

Hi is easy see portfolio for samples

$50 USD in 1 day
(46 Reviews)
6.4

15 freelancers are bidding on average $103 for this job

MikroStar

hi, i can help.

$200 USD in 5 days
(68 Reviews)
7.6
pcbdcs

Hello, I can do this.

$90 USD in 7 days
(122 Reviews)
6.7
Davelelievre

Hi Brian I believe I can help you with your project

$100 USD in 5 days
(27 Reviews)
6.2
shahbaz1980

Hi, i need to know followings. 1. what frequency VCO will produce? 2. amplitude of output signal of VCO? 3. Duty cycles?

$30 USD in 2 days
(50 Reviews)
6.9
technofreakz

I have experience in designing PCB with CadSoft Eagle.

$70 USD in 5 days
(3 Reviews)
3.9
nevorek

Simple task

$50 USD in 0 days
(2 Reviews)
3.8
beautifulangels

hi i am electronic engineer and expert at analogue electronics i can help you

$100 USD in 7 days
(9 Reviews)
2.9
ExpressElectro

Hello sir. I have master degree in electronic, and this is pretty basic project. I can fully finish you'r project for several hours. I offer you cheap and reliable design, and i guarantee you for quality of design. More

$60 USD in 1 day
(3 Reviews)
2.8
aki542

Hi,I can help u.

$70 USD in 7 days
(2 Reviews)
2.2
parmarjp

I can help you with this project.

$250 USD in 15 days
(3 Reviews)
1.6
FlyingPigeon

You will get best results!

$100 USD in 15 days
(0 Reviews)
0.0
tryitout

This project shouldn't even take a week. I have all the parts laying around, I can put it breadboard and give you a video showing it working and then proceed to a PCB layout using eagle. It's sad how many engineering g More

$130 USD in 6 days
(0 Reviews)
0.0
uetian2013

It's pretty good project i am also looking for this kind of project. I have very strong grip on power electronics device. i can do that. For further satisfaction check my profile.

$170 USD in 6 days
(0 Reviews)
0.0
jithu0043

I can Do it sir

$75 USD in 7 days
(0 Reviews)
0.0