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Simple consumer counter device development
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Engineering & Manufacturing > Electrical

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The client has made the following changes to the job.


Job awarded.

Oct 1, 2011

Job Description

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  • Posted: Fri, Sep 23, 2011
  • Time Left: Closed
  • Location: Anywhere
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  • Start: Immediately
  • Budget: Less than $500
  • Fixed Price Job
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  • U.S. freelancers must have W9
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I am designing a simple device intended to count (in hours) how long a device is drawing AC power. I have already conceptualized the electronics but would look for you to analyze and enhance. The sensor will need to be a capacitive voltage type sensor. When AC is detected in a power cord, the device will start counting and store the number of hours in the flash mem of the processor. I have defined the entire functionality of the device. You will be required to develop the schematic and layout in EAGLE and the code for the processor (8 bit freescale part). I will do all testing and prototype building.
Added 25 SEP 2011, 21:50 PM EDT
There will also be a couple small buttons on the device. We also need a 5 digit LCD and the whole system needs to be very low power. The 5 digits will be used to display the count of hours.

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