Gain for the circuit can be made adjustable by reassigning the linear resistor ladder currently used by the VRef adjustment to the Gain Amp voltage divider.
The current amplification factor is 3, (10k/3.3k), but several values can be created using this topology. I will need to build a test circuit and run some experiments.
This is a part of the solution to https://github.com/pyr0ball/pyr0piezo/issues/1
Gain for the circuit can be made adjustable by reassigning the linear resistor ladder currently used by the VRef adjustment to the Gain Amp voltage divider.
The current amplification factor is 3, (10k/3.3k), but several values can be created using this topology. I will need to build a test circuit and run some experiments.