Recently I watched a video on YT where someone had the idea to put together an ultrasonic mist maker.
Circuit schematic is here:
There ia also an instructables to it:
The funny thing is this guy took one of the cheap mist makers sold in china, analyzed it, then reverse-engineered it.
That's normally what the chinese do with western products, lol.
But more, he implemented a 555 timer into the circuit and a IRLZ44N mosfet. An inductance coil with 220 uH is used.
The circuit is so simple, I decided to order the piezos from china and give it a go.
The membrane of the menbrane is very sensitive. Avoiding minerals sticking to it I use distilled water.
But as you see in the picture, it is an open system, other than most of the cheaper ones made in China.
Most of them are encapsulated in a steel encasement. It's a perfect ground for bacteria to grow and it will be rusty after a while.
In most cases the membrane cannot be replaced.
I studied the comments on amazon and lots of people are complaining about the devices not lasting too long.
Once you have figured it out, you can make 3 to 5 of them and set them up for mushroom cultivation or growing cacti and exotic plants.
The disks can be integrated into a wall-side water container. Only the disk has to be inside of the tub, that's the benefit I see.
I will definitely try on that and post an update one day.
Here's the result:
Edited by Alpoehi, 06 February 2020 - 11:37 AM.