3-way triggering rides

[dmitri]

If you have Roland CY-12/CY-15 or a similar design cymbal, here is a firmware to test 3-way triggering:

megadrum32_20080510.zip

The 3-way triggering support in this firmware is done purely on theoretical grounds since I don't have a 3-way cymbal to test it with.
Connect a bow/bell cable to the first available or desired stereo input (Input1), connect a bow/edge cable to a stereo input (Input2) which goes right after Input1. Set "DualHead" to 3Way on the "Head" channel of Input1, set "Type" to Switch on the "Edge" channels of both Input1 and Input2.

[elrules]

I haven't build yet my megadrum so I cannot test it. maybe another one can test it. But thanks a lot for the firmware. As soon as I build megadrum I will test it

[Beamtreetaker]

Wow, this makes Megadrum even more sophisticated! Thanks for this function, dmitri.

[dmitri]

This exercise seems a bit pointless at the moment since nobody has a 3 way triggering cymbal to test with MegaDrum, but here is another test version anyway. Theoretically it should have better handling for such cymbals (and also for dual piezo/switch pads/cymbals).

[elrules]

I have just finished my 3way ride.
It is supposed to work with td-20., td-12 and td-10exp roland modules.
It can be used with my td6 module doing a trick. You need to use two inputs, and set their sounds to:
Input 1: bow= [no sound], edge= bell sound
Input 2: bow= bow sound, edge= edge sound

THe problem with this is that when I hit the bell, both bell sound from input 1 and bow sound from input 2 trigger at the same time. This would be the same problem megadrum would have with a non-3way-featured firmware.

I suppose the firmware you created is to pair two inputs so only one sound can trigger at the same time, am I supposing well?

Now I have the ride, next step is the megadrum!

[dmitri]

I suppose the firmware you created is to pair two inputs so only one sound can trigger at the same time, am I supposing well?

Yes, theoretically this is how it should work.

[gastric]

Just following up to see if anyone has confirmed this to function correctly yet? I'm still in the drum/cymbal build phase and am using an Alesis Trigger IO for testing my physical drum/cymbal build. Related it cannot support more than 2-zones successfully from what I can tell due to no intelligence to accept multiple inputs and intelligently only output a single MIDI NOTE, nor can it process switches in conjunction with peizos to set active zones. It's truly "dumb" from a module standpoint, you're forced to try to trigger threshold/crosstalk your way into zone isolation.

However, from reading this thread it seems the MegaDrum would theoretically support 3-zone cymbals, at least using Roland's multiple-switch design. I'm not saying Roland's implementation is bad, and in fact it seems excellent. The switches activate the zones, but pull the velocity info from a single piezo. Seems logical.

[elrules]

Hi Gastric, I am willing forward to seeing dmitri program 3-way triggering but the Yamaha design. Having 3way feature is great but having 3way the way yamaha implements it is even greater. Yamaha cymbals have 1 piezo and 2 switches, one of them has a 10Kohm resistor. Then the yamaha module distinguish between low impedance and high impedance switches and triggers a different sound. Simply great. I have just built megadrum, and have a DIY Roland CY-15r and a commercial Yamaha PCY-150s. Hope I can make some testing on the Roland and also the Yamaha (in the near future I hope) and give my results.
I will have to place an order to Synthex cause i bought the wrong atmega from my supplier

[gastric]

Does MegaDrum have the processing capabilities to provide a 4-function cymbal (bow/bell/edge/choke)?

The Roland modules process the edge switch intelligently to provide both edge hit triggering AND choke triggering on the same switch. It does this by computing constant VS momentary switch time.

Does or can MegaDrum provide this same functionality? Or does it simply process 3 inputs and only allow a single MIDI NOTE event to be output - which is still an improvement.

[dmitri]

Either I don't understand your question or you haven't read all the posts in this thread.