Electronic Muscle Stimulator Schematic Modification

This project received 4 bids from talented freelancers with an average bid price of $8022 USD.

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Project Budget
$30 - $5000 USD
Total Bids
Project Description

I am looking to have a working schematics of an electronic muscle stimulator modified. I am looking to add a 4 x 3 keypad to the current display board (This has already been started). I require the schematics to be done using the Proteus software. The current schematics is a fairly simple one, so it should not be too difficult to modify. In addition, I would like to have the chip (Atmel AT89C52 microcontroller) programed (using C preferable with kiel uVision) to make the machine perform its functions. I included a word document that explains how the machine functions within the file attachment. I have also included the old working schematics of the electronic muscle stimulator. **Only serious bidders may apply. Please look at all documents and files before bidding on this project. Technical Specifications of Schematics (Circuit): Input 24VDC/2A (power adapter) Outputs: Four isolated channels with individual intensity controls. Output Type: Medium Frequency: 2500Hz sine wave modulated at 50 beats per second. Output Current: 60 mA RMS into 500 Ohms Treatment Timer: 1-99 Minutes - in one minute steps Accuracy: +/- 1 second.

## Deliverables

1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done.

2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables):
a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment.
b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request.
3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement).

## Platform

Atmel AT89C52 microcontroller

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