And just checking the circuit, I would replace the 50K pot with 500K too suit a piezo.

> On 5 Apr 2017, at 07:55, John Hollis < john@... > wrote:
>
> Hi Diego,
>
> Drum pads and the like use piezo transducers. You will need an amplifier with a high input impedance. Here is a link to a circuit for a trigger convertor:
>
> http://www.paia.com/ProdArticles/drumsens.htm
>
> Cheers,
> John
>
>> On 5 Apr 2017, at 05:16, Diego Ragnini diegora@... 1 < Doepfer_a100@yahoogroups.com > wrote:
>>
>> Hello,
>> hope everything is fine to everybody
>> Does anyone know if this kind of system might be used to trigger events on modular systems It is designed to trigger drum machines and/or drum pad systems which provide proper trigger inputs… Just wonder if the signal should be “treated” somehow in order to be detected by trigger/gate inputs on Doepfer modules. The A-177-2 probably wouldn’t be enough for the purpose…
>>
>> Best,
>> Diego
>>
>>
>