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PC to LED driver interface

REVISION..... Due to all the questions, and the huge spread of cost in the bids, I've revised the description below, and I've also attached both a functional schematic of the finished project, and a text file of the pseudo-code of what the PIC is needed to do. The other slight change I made is to accept a design of one M5451 per five digits so that I can physically mount the LEDs on daughterboards for layout reasons.

I wish to pass 12 numerical variables, all of five digits, from a PC through the serial port to an external board, where they will be displayed on standard 7-segment LEDs.

I have obtained M5451 driver chips each of which requires a two-wire input (clock and data pulse) to drive five digits each to actually run the displays.

What I require now is a programmed PIC to take the variables from the PC and convert them to the right output format to send to the driver chips.

I have not selected a PIC to use, this is up to whoever does the coding. An ATMEL chip instead of a PIC is also acceptable, except that I don't have the hardware to program those, so please include the cost of flashing the chips in your bid if you don't plan to use a PIC.

Note that the bid request is for the software coding plus any device specific wiring instructions for the chosen chip - designing and making the boards I will do.

Richard

## Deliverables

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

2) At least one programmed and functioning PIC chip. Subject to final agreement, bid may include the physical supply of the programmed chips.

3) Deliverables must be in ready-to-run condition, as follows:

a) hex code ready to be installed on a standard and readily available chip as agreed to prior to the bid acceptance.

4) 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).

* * *This broadcast message was sent to all bidders on Friday Apr 15, 2005 10:35:08 AM:

Please see the revised bid description that more clearly explains the project. There is now a functional schematic and a pseudo-code listing to show the required work.

The closing date has also been put back to 4/26/05 to give time to review that.

Richard

## Platform

Data will be passed to the PIC via standard serial port protocol. Data must be passed to the LED driver chips in the manner set out in the Datasheet which may be found at...

<[url removed, login to view]>

All between input and output is at coders discretion.

Taidot: PHP

Näytä lisää: wire for hire, where to hire coders, up to standard, software review board, review board code review, message interface, hire wire, hire driver, hire a driver, Driver for hire, driver 1, code review board, between subject design, apr supply, pc board design, wiring, pseudo code, Led, hardware board design, driver

Tietoa työnantajasta:
( 0 arvostelua ) United States

Projektin tunnus: #3642655

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