www.megadrum.info

I was watching that the Analog Boards doesn´t have Operationals amplifiers .
So, how to amplifiie the signal coming from the pick-ups o microphone pads.

thanks

Why would you want to amplify the signals from pads?

lucksys wrote:coming from the pick-ups o microphone pads.

We don't use microphones but triggers (piezo element).

How much is the signal level peak of triguer (Volts) when hits one pad ?
thanks

I use Piezo-Electric and Microphones for sensing the hits fom the pads , and these need amplification and filtering to be procesing by the digital Board.

Microphones? Can you tell more?

I put piezo-electric mic under the muted pads. I used practices pad , and i put a piezo mic under the pad to sense the hit.

lucksys wrote:I use Piezo-Electric and Microphones for sensing the hits fom the pads , and these need amplification and filtering to be procesing by the digital Board.

Atmega analog inputs are quite sensitive to use piezo element without amplification.
Filtering is done digitally by the Atmega (Digital Signal Processing).

OK .

Thanks for all