Cribbage Board #10: The Wedding Board

The Block Diagram below is the 10,000ft overview of the Wedding Board as a system. Click the thumbnail to view the full size image.

Yes, the Wedding Board came with an instruction book. A 52-page, size of a deck-o-cards, instruction book. The Instructions and FAQ took quite some time to put together. Lots of pretty pictures and useful information (including cautions and warnings). "A must read", I might add. This is the lettersize version of the file for easier viewing.

Assembly Model (3.1MB edrawing exe file)

That SolidWorks assembly model has been exported into a stand-alone e-drawing (it is a 3.1 MB PC executable). You'll need a decent PC to be able to view this, as it is quite graphics intensive. It takes a little while for this to load (it will seem like it has crashed) but it is worth the wait. This model will let you zoom/pan/rotate and even change the shown configuration of the model (look at the bottom). Yes, I really did model just about every single component prior to cutting any material.

Pegs make wonderful gifts. What better gift to those that provided help than to make them their own CarPeg. A CarPeg is nothing more than a peg attached to a car lighter-plug (with a 7805 regulator). The CarPeg uses the same firmware, making it programmable for all 70 modes. CarPegs have been running in various individual's cars for >6 months without any problems or "crashes".

These files take an example (and real life) EEPROM dump from a peg and illustrate what it all means. EEPROM dumps were crucial to the understanding of the eeprom dual circular buffer routine functionality (see FlowCharts). The graph helps us visual people understand what is really going on and how the Peg finds it's last mode or counts the programming cycles upon every powerup.

Wanna get a visual idea of how the peg generates all the lovely colors and modes. Then spend some time checking out the Peg Diagram document. This document also helps understand the variable terminology used in the firmware as well as how the timer interrupts generate the flash and pulse overlay modes.

Near the end of the project, I determined that EE techs were way better at soldering 0402 packages than I was. Those TSSOP packages (FETs) were crazy as well. In order to facilitate having somebody else assemble pegs, this Peg Assembly Document was put together. This is revision X1 and is missing the 0.1uF cap that proved so essential.

Because this project was taking so long, keeping a detailed Bill Of Materials was necessary. The real BOM has cost rollups as well. This file illustrates how many parts are in each Wedding Board.