building a DIY hydrogen generator

I don't know what you do to "pay the bills", but if you are NOT a high school science teacher (as am I) YOU SHOULD BE! You combine beautifully precise experimental technique, clarity of explanation, and (most important) delightfully creative exploration of the world in a package that would have students eating out of your hand.

If you are interested in higher currents I would recommend to decrease voltage and increase electrolyte concentration as all voltage increase after just a few volts indroduce inefficiencies and thus heating. Btw wish I would have found this channel sooner since you’ve done so many cool things.

Good keep it up I like it

I had a whole collection of graphite electrodes, until my parents threw them away. found a ton of old rotten away battery/accus, while working on adding new plants in a new park, so most was rotten away, but all of them had big graphite rods in them which where still perfectly fine, wanted to use them to make ruby and for things like this, but they got thrown away. it might also be interesting to make your own graphite rods, I have already tried velostat, but the first test didn't work, I might try using a clothing iron to iron it on aluminium foil, where the aluminium foil keeps it conductive and the velostat prevents it reacting with the liquid. it might also be interesting to test things like charcoal or such to see if they would work.

btw, did your electrodes get damaged during the proces, since the water seems to have turned black, suggesting it generated graphite and/or graphene powder.

graphite electrodes arent great, you can instead use several stacks of stainless steel or other resistant metal that can cover the entire bottle, you can also make the cathode and anode stacks separate to instead of HHO, hydrogen and oxygen separate also the best electrolyte would be potassium hydroxide, but it inst all that great because it will be more corrosive to electrodes

Will it float?

Can i use hydrogen sodium carbonate instead of sodium carbonate?

wont u have co2 as a gas too?