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Simple DC Circuit Design
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Engineering & Manufacturing > Electrical

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The client has made the following changes to the job.

Description
Date

Job awarded.

Apr 9, 2011
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Job Description

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Updated

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  • Posted: Mon, Mar 28, 2011
  • Time Left: Closed
  • Location: Anywhere
  • Client prefers freelancers from:
    Anywhere

    You are still able to submit a proposal for this job.

    The client prefers freelancers from
    a different location.

    You're still able to submit a proposal for this job, regardless of your location.
  • Start: Immediately
  • Budget: Less than $500
  • Fixed Price Job
  • Elance Escrow Protection
  • W9 Not Required
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I am looking for somebody to design a very cost effective circuit that runs off a 12V DC, 5Ah battery power source. The circuit needs to be able to power the following devices:

Single 5 Volt DC 1 Amp Photo Frame
Eight LEDs 25mA 3.3Vdc (min) to 3.6Vdc (max)
Integrate Photodetector to turn LEDs on and off during the day. I do not want to use a photocell due to the cadmium content. Photo Frame will be turned on and off using a pushbutton switch.

This circuit must be very reliable and efficient as the battery will be charged using a separate charge controller device connected to a 3.75watt solar panel.

Please do not bid on this project if you are not experienced in electrical circuit design. If you have any questions feel free to submit via PMB.

Thanks for your interest in the project.
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Added 28 MAR 2011, 17:39 PM EDT
Instead of a pushbuttom switch is there a proximity sensor we could use so you pass your hand in front of the sensor to ...

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Job ID: 23601745
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I am an Electronics Engineer from the United states (OHIO) I have experience with Circuit design, Robotics, and Manufacturing,
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Bid ID: 23602645  |  Submitted: Mar 28, 2011 18:23 ET 
Delivery
Within 3 days
$60.00
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