Ok, I forgot the voltage drop =\ I got LED light so should be fine. What I should do is put your circuit to the test without the capacitor and check if the voltage is low enough for the capacitor to handle ? How should I balance the capacitors ? (Even if I will not take this path, I would like to know)

Thanks again for your help

What I wanted to do was something like that

Though you seem to have a better knowledge and better circuit. I bought 2 super cap 5.5v so I wanted to put them in series (though get half the capacitance). Your approach seems to be better and I may take it. Though mine should be working ? Keep in mind that I’m a nooby in electronics and I keep learning from the internet so not the best to have solid base…

Does your solution works with 5.5V, the 6V dynamo does not blow it ?

Thank you for your answer I really like it.

Yes but it should not be like 30 seconde long I think, so it should be OK for a bicycle :)

Thank you to start the thing :) I appreciate it and I’m sure I’m not alone <3

How does it works ? Do you have a plugins to mark which pixels we should mark ?