Dear all,
First let me say thanks to paul for this wonderful project.
I honestly do not know if I would get so much into electronics
(as a hobbyist) without this project.
My aim this summer is to build an electronic drum set for my 4 year old son.
My current set-up so far is this :
* For the drum pad I followed the construction in this great video https://www.youtube.com/watch?v=N4gyULfb55A
* The piezo in the drum pad is connected to DFR robot's http://www.dfrobot.com/index.php?route=product/product&product_id=399#.VZwxXPmqpuA
which is basically just a 1M resistor and a diode in parallel
* I am connecting the DFR piece output to ground and analog input A2 of teensy
and I am using PeakMeterMono code to see the effect of the beating on the pad.
Basically all works fine but the only problem is that the pad is much too sensitive
(and I am afraid way too sensitive for a 4 year old) : a really gentle tap of
my finger is already half of the scale and the hardest bash (with a drum stick)
is only a few notches above that. So the pad is not scaled properly.
My question is how can this be scaled reasonably ? Is it a software problem
or do I need an additional circuit between the piezo and teensy (apart from the DFR one I mentioned above)
Thanks so much in advance
First let me say thanks to paul for this wonderful project.
I honestly do not know if I would get so much into electronics
(as a hobbyist) without this project.
My aim this summer is to build an electronic drum set for my 4 year old son.
My current set-up so far is this :
* For the drum pad I followed the construction in this great video https://www.youtube.com/watch?v=N4gyULfb55A
* The piezo in the drum pad is connected to DFR robot's http://www.dfrobot.com/index.php?route=product/product&product_id=399#.VZwxXPmqpuA
which is basically just a 1M resistor and a diode in parallel
* I am connecting the DFR piece output to ground and analog input A2 of teensy
and I am using PeakMeterMono code to see the effect of the beating on the pad.
Basically all works fine but the only problem is that the pad is much too sensitive
(and I am afraid way too sensitive for a 4 year old) : a really gentle tap of
my finger is already half of the scale and the hardest bash (with a drum stick)
is only a few notches above that. So the pad is not scaled properly.
My question is how can this be scaled reasonably ? Is it a software problem
or do I need an additional circuit between the piezo and teensy (apart from the DFR one I mentioned above)
Thanks so much in advance