Once I saw a working cable I did a slight redesign of this
cable for better performance timing performance jet a simpler
circuit with improved the documentation. I replaced this
--- In email@example.com
, "Mike Engelhardt" <panamatex@...>
> My wife got a Mares AirLab dive computer for Christmas.
> We didn't know that it was possible to download dives
> profiles when we ordered it so we didn't buy the IR
> interface cable. Mares does not use the standard IrDA
> cable, but a proprietary design.
> I successfully made my own IR cable which would work also
> for other Mares dive computers. I used the information at
> www.ektm.de and www.cardew.org/edward on this. I made one
> with yet more generic parts than they used. I've put the
> entire documentation package that includes a schematic(that
> simulates in the free circuit simulator LTspice), a layout
> for perf board as it uses no surface mount devices, some
> photos, and some information on the communications protocol
> used. The zip file is 372K and is accessible as
> The cable works with the Mares dive software, I.R.I.S,
> which can be downloaded free from the Mares site.