eranrund
Newbie level 5
BPM Counter
Hello everyone.
I'm trying to build a beats-per-minute counter.
I've got the microcontroller part all ready and done, however, I'm having trouble with the circuit which is supposed to generate a nice digital wave form (with a change from down to up on a beat). Here is what I did, and it works fine as long as there's a steady and simple beat :/
the first opamp is simply an amplifier, the 2nd is a lowpass filter at around 150-200hz, and the last one is a comparator. all of this is than fed into a not gate and a schmitt multivibrator.
Please help me improve this
P.S. sorry for the uglyass schematic and design. I'm really new to this
Hello everyone.
I'm trying to build a beats-per-minute counter.
I've got the microcontroller part all ready and done, however, I'm having trouble with the circuit which is supposed to generate a nice digital wave form (with a change from down to up on a beat). Here is what I did, and it works fine as long as there's a steady and simple beat :/
the first opamp is simply an amplifier, the 2nd is a lowpass filter at around 150-200hz, and the last one is a comparator. all of this is than fed into a not gate and a schmitt multivibrator.
Please help me improve this
P.S. sorry for the uglyass schematic and design. I'm really new to this