This is an Automated Gas Canister filling station done with IC chips and code. You can select the desired gas to be filled by the selection dial and then just pull the lever to activate the filling. After you are done filling your canister and remove it you can turn the selection dial to flush to recycle the gas in the piping back to your filtration system. I run the Flushing process before and after each filling.

You will need to run piping from each tank setup and leave room for volume pumps and wiring on each Gas line. Each Gas type will require a volume pump, mine set to 80 L. You will also need a mixer connecting the H2 and O2 lines for the H2/O2 mix gas filling. This should be set to 66 H2 34 O2 on the mixer itself.

Requirements of the build:
Piping from each gas type
Volume pump for each gas line
1 Gas Canister Storage
1 Lever
1 Dial
1 Sign
1 Pipe Analyzer
1 Light per gas type and for the flushing
1 Gas Mixer
1 Digital Valve

For the sign you can use this and paste it with a labeler on the sign:
0= Flush , 1= Fill N20, 2= Fill X, 3= Fill Co2, 4= Fill H2, 5= Fill N2, 6= Fill O2, 7= Fill H2o, 8= Fill H2/O2 Mix

IC Chips Dial Setting:
D0= GasTankStorage
D1= Lever
D2= Dial
D3= Pipe Analyzer
D4= VolumePump (specify the gas it is on for each chip) this is changed to a Digital Valve on the Flushing Chip
D5= Wall Light (specify the light for each gas type)

You can find images of the Build here: https://imgur.com/a/0tz8fX7