My connection is conducted between two galvanised nails, that are inside a moisture medium, as a normal situation, with an acceptable level of moisture the buzzer supposed to be off, when the moisture reduced and connection between to heads of nails gone off, I need the buzzer goes on. ( please note the medium is not soil, the buzzer could be, Piezo Electronic Buzzer Effect Tone Alarm 3-24VDC 12V Continuous Beep Arduino, therefore system should work with a 12V battery )You will need to be more specific about 'a connection is on'. Connection of what to what?
No, idea, but the simpler the better.Do you want it using "active" components like a Transistor or "passive" ones like a Relay?
That's not what you said in your first post which suggested the input was a switch. Since no one knows what the "moisture medium" is or, more importantly, the resistance threshold at which the buzzer should sound, it's not possible to provide a solution. Perhaps you could find out that information?My connection is conducted between two galvanised nails, that are inside a moisture medium, as a normal situation, with an acceptable level of moisture the buzzer supposed to be off, when the moisture reduced and connection between to heads of nails gone off, I need the buzzer goes on. ( please note the medium is not soil, the buzzer could be, Piezo Electronic Buzzer Effect Tone Alarm 3-24VDC 12V Continuous Beep Arduino, therefore system should work with a 12V battery )
Thanks and best regards
Or just a switch, batty and buzzer?Or just a switch, batty and buzzer?
Hi again, sorry I was not clear, what I meant is that, there is a medium, like glass wool, that has a certain amount of water inside, therefore if these two nails with certain distance enter there, right amount of moisture will arrange needed conductivity between head of two nails.That's not what you said in your first post which suggested the input was a switch. Since no one knows what the "moisture medium" is or, more importantly, the resistance threshold at which the buzzer should sound, it's not possible to provide a solution. Perhaps you could find out that information?
What is the typical resistance of the moist material? Clean water is not conductive.Hi, I need to have a simple DC diagram to act as a warning, when a connection is on, a light or buzzer to be off, and when same connection goes off, that light or buzzer activates.
This is for a hobby and therefore can't gone complicated
Thanks
Hi again, I do not have any idea, my meduim is stone wool and two nail with few millimeters distance inside of this stone wool, and whole concept is to keep this mediume with certain moisture and the distance of head of two nail could be adjust base on try and error and base on design of electric circuit.If the water is pure it is a very poor conductor, so the proposed method may not be reliable.
KISS, properly applied.Or just a switch, batty and buzzer?
...will always melt hearts.KISS, properly applied.
Stone wool? As opposed to fiberglass wool? Are you working at 600 degrees and expecting to find moisture?Hi, I need to have a simple DC diagram to act as a warning, when a connection is on, a light or buzzer to be off, and when same connection goes off, that light or buzzer activates.
This is for a hobby and therefore can't gone complicated
Thanks
It is used for insulation:Stone wool? As opposed to fiberglass wool? Are you working at 600 degrees and expecting to find moisture?
I guess fiberglass wool was deemed unsafe? Last time I looked stone wool was a good insulator for higher temperatures.It is used for insulation:
"ROCKWOOL stone wool insulation shields buildings and their occupants, improving safety, comfort and building value. The World Health Organisation has left stone mineral wool off its list of potential carcinogens following long-term studies. After more than 60 years in use, ROCKWOOL insulation has proven to be the safe and most durable choice."