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I would strongly support this idea.

If you look at it critically, the amount of time used, the cost of parts, especially a PC board etch and the 2012 USB adapter and a suitable housing and physical setup, the total cost of building one of these adapters is equal to or more expensive than the purchased component from Mares. If one...

One thing to keep in mind with this gadget is that it uses a lot of battery power. Use it carefully, doing downloads of dive data possibly only after each multiple-dive trip. There are several dive computers with this problem, even Suunto. I am not shure why, because the Puck circuit above...

I have built three of these adapters for myself and my close diver friends. To do this I designed a small printed circuit board. Here you can see the built up printed circuit board. https://www.dropbox.com/s/0qaw9i5lwl6s2r2/PCB.JPG Here you can find the printed circuit board layout as a GIMP...

I can report that I also tested the equipment using a Puck Pro dive computer. One can confidently assume that it should work with all dive computers that can use the Mares Drak USB interface. Thi includes the Nemo and Matrix computers. Kind regards, willemf

I can report that the circuit as published above does work. I built the device, including the LEDs and using the USB board from eBay recommended by Bryscus. Bryscus and Moerby, thank you very much for your initiative. :) I tested it on a Puck Air. My own computer is a Puck Pro and I still...

I am about to build this device. Will let you know whether I experience the same problem An important issue is the choice of Schmidt NAND chip. Make absolutely shure the chip you use can operate at 3V power supply and if possible even lower. Some newer CMOS Shmidt NAND chips operate with supply...