VMA343 Lightning sensor missing product info and datasheet

The VM211 Earth Listener uses the VMA343 Lightning sensor.

The VM211 firmware (v3.4) documents one of the parameters like this:

#define AS3935_CAPACITANCE   72    
// <-- SET THIS VALUE TO THE NUMBER LISTED ON YOUR BOARD (calculation between the caps)
// 72 pF default, 56pF for PlayingWithFusion board, 112pF for other

I would like to verify this, but cannot find an indication of this on the sensor board.
So would like to check this in the datasheet for the VMA343.
But I can not find it on the Velleman website.
In fact do not see the product VMA343 at all.

Would appreciate a link to the datasheet.



The value of the capacitance in the VMA343 board is 72pF.
The product VMA343 will be available as a stand alone by the end of July. We will also provide the datasheet & demo code.

Kind regards,


Ah, that explains why the doc is not there yet.
So the 72pF in the current firmware is the correct one. Good to know.

Maybe note that in the firmware code that THAT is the correct value?

Do you want me to create a pull request for that on github?

Kind regards,


That would be great. Let’s all work together to make this project better ;-)!
Kind regards,


Done, see pull request 6

There are a few more of my pull requests there :wink:
Those require a bit more verification first.

Kind Regards,