Vizier87
Active Member
Hello guys, I'm designing a disdrometer for my weather station project. I'm currently using a piezo speaker mounted on a broken cd/dvd disc to increase it's sensitivity. When rain hits the surface, the transducer should give some output.
So the question: Is the LM2917 freq-to-voltage suitable to read the raindrop frequency?
If no,is there a way to 'latch' the output? So that, let's say a heavy raindrop gives 2.5 volts, and the frequency of it hitting the platform is 2 Hz, so that the output of the amplifier is not 'gated' but more of a 'damped' output. The Peak output will fall slowly with time' lets say 3 seconds, but it'll re-hit the peak after the next raindrop.
It'll be easier to translate it via an ADC.
Here's the link to a less defined project: https://www.instructables.com/id/Make-an-acoustic-rain-gauge-disdrometer/
So the question: Is the LM2917 freq-to-voltage suitable to read the raindrop frequency?
If no,is there a way to 'latch' the output? So that, let's say a heavy raindrop gives 2.5 volts, and the frequency of it hitting the platform is 2 Hz, so that the output of the amplifier is not 'gated' but more of a 'damped' output. The Peak output will fall slowly with time' lets say 3 seconds, but it'll re-hit the peak after the next raindrop.
It'll be easier to translate it via an ADC.
Here's the link to a less defined project: https://www.instructables.com/id/Make-an-acoustic-rain-gauge-disdrometer/
Last edited: