> >I built a launch controller based on this design, and it works well. The
> >one thing I got hung up on was finally realizing that 4conductor phone
> >extension cable flips the red/green and black/yellow connections from one
> >end to the other (well, they really don't flip, but that's the net effect
> >one you trace from one end to the other). Once I got over that
> >forehead-slapper, it worked fine.
> That's something I just dealt with without thinking, since I do lots
> of phone wiring. I'll add a tip to that effect to the plans, though.
> Glad you enjoyed the design!
You might also add a note about a related issue. When coupling two premade modular
cords, two "flipped" in series equals one "unflipped". I forgot this and coupled
two 50' cords together and for a while couldn't figure why it didn't work, as each
cord worked separately. Odd numbers of premade cords in series is OK, if your jacks
are wired to use standard premade cords. I bit the bullet and bought a cheap
crimping tool to make cords of the proper length.