The most important thing you have to know is that we are divers and we don't want to use a black box made by a company. Whe want to UNDERSTAND the system and we want to be able to OPEN and AUDIT it. We can't trust something not transparent, that's all !
Open source and Open hardware are essential to establish our trust relation. For hardware everything is not as open as whe would like ... but we do our maximum to use as open as possible hardware.
There is a lot of divers who made "do it youself" nitrox analiser, for example:
Here is the list of furniture you need to set up your free Nitrox Analyzer:
Fritzing file is available here https://github.com/gasblender/hardware/tree/master/mainboard-v01
Please download and print parts from https://www.thingiverse.com/thing:4579361 or https://www.thingiverse.com/thing:3257130 (old project)
STL files and FreeCAD source file are here : https://github.com/gasblender/nitrox-case
This one is in action since 2018 ! Not very sexy but "it works" !
Here is our first prototype with a do it yourself PCB :-)
We would like to be able to build a Nitrox analyser where whe are around the world. So we choose to reuse some available products such as o2 cells from CCR rebreathers and others easy to find parts.
All of software we wrote is under GNU/GPL licence and All of software we use is free software too (for example Fritzing to make PCB parts). Source code for Arduino is build with Arduino kit.
Please take cheap parts if you don't want to put a lot of money in your Nitrox Analyser ! For example if your CCR uses Molex connector for O2 Cells you just have to use the right cable and if you need an other sort of adapter you can do it if nobody did it before.
Follow the documentation and learn how to build your own Nitrox Analyser ! What could be more interresting ? By doing your own analyser you learn the concept and understand what it does.
Something get wrong ? open it and repair it by yourself ! All of our products are designed to be self-repairable by users !
Our Nitrox analyser uses CCR Parts: 9v battery and O2 Cells. Not enought power for your CCR ? but sure enougth for Nitrox Analyser. O2 Not enought good for 1.6 ppo2 ? but goot enought for Nitrox less than 50% ...
We need your help to build our stuff and release electronic parts for Nitrox Analyser and TriMix Analyser ...More