My new approach

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Yes you are in a  good way... few while ago i set up some dodonations link back2014 for buying a probe ... got my car break lines cut and got double the cost of buying one...

Many things happened in this long way

I already have many components spare but im kind of over cauteloso recently ... afraid of spending more maybe

I colected some rain water yesterday hope i can make at least some tests tonight

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I decided to apply a sine wave on the very thick coil

This way i can tap the voltage on the cell directly with the oscilloscope to see if there is any vibration

I expect that if resonance is achieved the voltage will increase from few mv to some more readable value

Hope the amplifier dont explode before

I may add a resistor in series to limit the power

Im using the esp32 for this with the sinewave generator

Im also not sure how it would behave in case of failure

Also there was a kind of glitch when changing freq so i may work a little on the code maybe make it run the frequeny change at the second core

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this code is working for the frequency generator with esp32

it uses the ad9833 for diferent waveforms but theres is a bug on the sweep i need help to make it a clean sweep

it saves the min max freq sweep step and freq to epprom … theres two loops one for each core but im not sure yet the best way to divide the workload

pressing the button (boot) for one second open the menu, encoder change the menu itens and params and touching the button again save

Pressing the button 3 times open the waveform menu

A nice improvement would be to use a different display, although this 8 digit 7 segment one is cheap but it wont display letters very well.. led matrix with 8 digit would be better and probably is the same code…

I will plug this now to the amplifier and see how it comes…  loot the attachment to see the bug on the sweep…

 
This is 1000 lines of working code… many many many many hours of work to get there…
if you fell like you want to help me by coding or donating money please let me know… i have some donation links…
and can provide a diagram of how its wired… although is just look the pins number on the code…

there is many ways to help me
you can also pray for me

Hope this help you see where im going

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added some updates… now it save the waveform too and also i created a menu for the delay between the steps.. making it slow makes the sweep less buggy but i still believe there might be a way to get it bug free..

so you can choose the frequency step and delay between changes giving a chance for each frequency to shine with time to show if resonance is available

here is the link to the most updated version

https://github.com/sebosfato/Esp32-MULTI-WAVEFORM-FREQ-GEN-

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You shoud uploaded some photos to Github. Otherwise it’s just bare text

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Im going to add some images so you see how it look…

On the git i placed the code for the esp32 so it can be downloaded and set on it easily with arduino ide…
you just need to add the required libraries..

if you find problems lets solve.

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Today im finaly doing it... after working like a dog this month i felt today could be it.

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Today im finaly doing it... after working like a dog this month i felt today could be it.

First test is just open ckt track for resonance... apply the voltage to the thick coil having all the cores around

Than short ckt it to track the current vs frequency

Sine wave

The water is over 400ppm because there's still remaining some sulphuric acid from last tests

My first goal Is to find If there is some resonance of the ions at audio to several kHz range