Dynamic trimix blender
This project includes both hardware description & all needed software and firmware.
Blender is built to mix EAN and Trimix mixtures dynamically, with no more than 40% of oxygen.
Main electronic components:
- MCU: Atmega64. 16 or 32kB versions could be used with no/minimum code changes (untested).
- ADC: AD7793. Used to get accurate O2 readings.
- Any oxygen sensors with 7-25mV @ 21% O2 output could be used without any changes.
Software needed to work with schematic and board:
- Eagle for schematic and board. Free version is enough.
- FreeRouting - was used for initial routing. Optional.
- Gerbv to preview gerbers. Optional - just to control them before factory processing.
I've ordered PCB's at SeeedStudio, but feel free to use any PCB factory with equivalent capabilities. Board size is 44x122mm.
Developed by DiveTeam 🚣