Livio
Newbie level 6
Hi all, first of all I am really no expert, so I apologize in case I make gross mistakes. I have some ideas in mind for a project and I would like to get some inputs in order to see what's feasible or not and what's the best way to do it.
I would need to design an underwater electrode (no salty water, only fresh) that would produce voltage changes in the order of mV (1-20 mV). It does not really matter if the changes are positive or negative, however it could be nice to be able to control their sign. They definitely would need to be switched ON and OFF by some external trigger but they should also have the chance to stay "ON" for long times (hours or days). They should be shaped in a way that would allow an array arrangement (I was thinking about some sort of "tile"-like flat electrode). The tricky part (or maybe impossible) would be to have the circuit insulated but still able to produce detectable signals from the outside. The water pressure would not be super high... I plan to use them in very shallow water (20cm) on a 80x80cm surface.
I though one way could be to use LEDs as when they light ON they cause a drop in the circuit voltage of some few mV (1-5 I guess). LEDs would have to advantage to be also visible and so if one has an array (as I plan to build) one could identify where the voltage change occurred. the array will be put in a square glass tank and the activity of the electrodes will be monitored through other recording electrodes.
Ultimately the idea is to have an array of electrodes which activity can be patterned and programmed via software (or arduino-like solution).
Any feedback on this or any idea on which materials/electrodes would be best to use in such a configuration ?
As an alternative, would it make sense to use electromagnetic field through the glass tank ? I hope all this doesn't sound too stupid
Thanks a lot !
I would need to design an underwater electrode (no salty water, only fresh) that would produce voltage changes in the order of mV (1-20 mV). It does not really matter if the changes are positive or negative, however it could be nice to be able to control their sign. They definitely would need to be switched ON and OFF by some external trigger but they should also have the chance to stay "ON" for long times (hours or days). They should be shaped in a way that would allow an array arrangement (I was thinking about some sort of "tile"-like flat electrode). The tricky part (or maybe impossible) would be to have the circuit insulated but still able to produce detectable signals from the outside. The water pressure would not be super high... I plan to use them in very shallow water (20cm) on a 80x80cm surface.
I though one way could be to use LEDs as when they light ON they cause a drop in the circuit voltage of some few mV (1-5 I guess). LEDs would have to advantage to be also visible and so if one has an array (as I plan to build) one could identify where the voltage change occurred. the array will be put in a square glass tank and the activity of the electrodes will be monitored through other recording electrodes.
Ultimately the idea is to have an array of electrodes which activity can be patterned and programmed via software (or arduino-like solution).
Any feedback on this or any idea on which materials/electrodes would be best to use in such a configuration ?
As an alternative, would it make sense to use electromagnetic field through the glass tank ? I hope all this doesn't sound too stupid
Thanks a lot !