+5v trigger for tap tempo

[Stewart Pye]

Hi Mark....

The only way I can think of doing this is with a micrcontroller. (that's my
solution to most problems :-) If you're a beginner to electronics you
probably won't want to do this, but here I go anyway....

You could use an 8 pin microcontroller such as the 12C509. All you do is
scan the switch and count the time between two switch presses. Store this
value and use it as the value for your pulse output counter. You could have
another switch for start/stop. 
Total parts:
1 12C509
2 switches
1 led and resistor if you want a flashing light.

If you really want this thing and don't know anyone with a PIC programmer,
and if I'm not too busy, I could program it for you and send you the chip
for a small cost. Gee I'm a nice guy :)

Stewart.


At 02:01 PM 15/07/99 -0500, mark scetta wrote:
>the JP6 has a trigger in that will set the arpegg clock rate. it is designed
>to get its pulse from a TB-303, putting out +5v. i would like to DIY
>something that puts out this pulse *and* has a tap-tempo interface so that
>when i tap it twice, it assumes that tempo. also it must have some kind of
>bypass or on/off switch (for times when i'm not using the arpeggiator). i
>think what i'm trying to build here
>is a metronome of sorts, but i'm not versed enough in electronics to be able
>to design it, especially the tap tempo part.