Gyre Nano

[kwirky]

Originally Posted by Delphinus

That's really awesome. I'd love to try something like that for a gorg tank. .. One day ...

Question (slightly off topic), can the 555 timer idea have different on/off settings, or do the on/off settings have to match? I.e. can you do 10 seconds on, 5 minutes off, kind of thing?

actually a 555's perfect for that. they call the ratio between on/off the "duty cycle" and a 555 timer can theoretically never run exactly 50% between the two. Download that program in the previous post, go to the Astable tab, and play with the two resistor settings (remember the slider bars change the resistors to a finer degree).

You could get it to run exactly 10 seconds on, 5 minutes off, by increasing the size of the capacitor, and then changing the ratio between the two resistors.

You would use a 470uF capacitor, a 2.0mohm resistor as resistor A, and a 15kohm resistor for resistor B.

Thinking of using something like that for dosing or the likes?

I'm thinking if I increased the number of MJ's to a crazy ammount, I could use quick 5 second alternations between the sets, and have some REALLY cool turbulent movement in the upper region of the tank