In cooperation with the Lost divers club we started to develop a closed circuit rebreather and also a diving computer with decompression calculation. Now we can present the first prototype of LD'sC/DC computer, which is designed for both beginners and advanced divers, as it can work with multiple gases including trimix and also with open or closed circuit option. This computer will be the same for a complete rebreather with oxygen dosing control.

We designed it with user comfort in mind, so it features a large 2.8-inch display and large buttons for control - even gloves are no problem.

We didn't skimp on features either. The power is supplied by a Li-Ion battery, which is charged wirelessly with the same charging pad as mobile phones (Qi 1.2 standard). The device therefore has no connector for charging. Even the connectivity is arranged via Bluetooth, so that in the future it will allow connection with a mobile phone as well as with a laptop or computer.

Of course, there is a pressure sensor located at the top for measuring depth and a water sensor to detect diving.

The following features are implemented:

  • online calculation of decompression with the choice of Bühlmann algorithm or using gradients called Baker in honour of Erik Baker
  • selection of decompression stops
  • choice of open-circuit (OC) or closed-circuit (CCR) diving
  • support for up to two decompression gases including EAN36 or EAN50 and trimix, gas composition can be freely preset
  • dive and decompression planning for both OC and CCR with gas selection
  • pre-dive checks and pre-breathing for CCR
  • Gauge mode without pre-dive preparation
  • automatic dive initiation with decompression calculation when water is detected and the diver is at minimum depth
  • accelerometer for position keeping and compass
  • gas switching during dive and set point adjustment
  • up to three dive screens depending on the detail and size of the display required (you can pre-select which to use)
  • graphical display of decompression and tissue saturation status of the decompression algorithm
  • CNS and TTF calculation
  • logging of dive
  • alarms to alert you when unexpected events occur (exceeding the planned depth or dive length, failure to decompress, etc.)
  • vibration during various events

The development continues and field testing has begun. Our warmest thanks go to Mira for his valuable insights and advice. If you have any questions, please feel free to write to us. We would love to know your feedback, how you like it, or what features you would like to have in the computer.

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