3 zone Yamaha type circuit

[jman 31]

OK, so I have success....sort of. I am getting three zones. I am using a 4K7 resistor at R2 on the bell circuit and no resistor on the edge circuit. The only problem I am having now is that the edge sound changes the bell and the bell sound changes the edge! I still get a good choke from the edge trigger though. Is this because the MD is expecting a lower voltage on the edge than the bell? And is there a workaround for this in the settings?

[jman 31]

I switched the 4.7K resistor to the edge switch and now I have all of the sounds triggering properly. I still get some of the zones triggering when they aren't supposed to, but I'm sure that is just tweaking the settings.

[dmitri]

What is BELL_PIEZO_BYPASS for?

[jman 31]

In case I was so inclined to use a standard switch for the bell.

[gui_999]

I don't know if it can help some people, but I designed some switch for my yamaha style diy wood ride (but it would work on any type of cymbals IMO).


I'll try to post some picture later today since it speaks more than words..



I based my design on that: http://portal.batacas.com/index.php?vie ... &Itemid=74

I made a couple of change that make it easier than cutting soda cans. Here a list of matérial I used:
-double side tape
-Plastic sheet (the kind of sheet teachers use to write on with a projector)
-Aluminium foil (kitchen type)
-Paper clip
-Glue (locktite type)


I started by tracing my switch design on the cymbal and put double side tape on that zone. Then I placed the foil very carefully so I don't wrinkle it. After, I cut the excess foil of the "switch zone", leaving only a square of foil that I fold to make a square of about 2cm x 2cm, on which I placed the paper clip (make sure the paper clip is sanded to remove any paint, since it's used as a solder point). I put some glue on the paper clip and foil to make sure it's solid and wont tear.


After that, I cut 2 pieces of that plastic sheet with the same design as the one on the cymbal. I cut the first piece leaving only a 3mm borders (so the middle is cut off leaving space for both layer of foil to touch each other).

On the 2nd piece, i did the same thing as on the cymbal. Double side tape, place foil carefully, cutting the excess, foil.. placing a paper clip (make sure it dont touch the botom layer).

At that point you can glue or double side tape (i chose to glue, easier to work) the first piece on the cymbal. After that, I glued the 2nd piece on the 1st piece (make sure the foil is facing down).

Once fished, solder wires on the paper clips



Works pretty well for me.. but as I said, I will try to post some pictures..

[jman 31]

I am once again trying to fine tune this circuit. I am easily able to get three zones, however, I am getting an edge sound as much as I get a bow sound. I can trigger the bell perfectly. I get the edge sound even with the edge trigger disconnected, which tells me that the transistor on the circuit is closing and causing the edge to trigger on the lighter hits that don't trigger the bell.

I have tried many different setting, but here is what has worked the best so far. I can lower the edge threshold down to about 20 and then I lose the ability to get the choke.

[westhouse]

Hi
Jman's schema doesn't work in my MD. I have firmware 20100515.
Edge and Head is ok, but bell biezo is not.
Someone can explain me how I can do piezo/piezo/switch?

thx

Edit:
And what I mean by "real edge", "real switch"?
What is the difference between "switch" and "real switch"?

[jman 31]

I ended not pursuing this any further because I was never able to tune it to work right.