can mydmx be control by a?

If it's midi you can ask. that rule only really applis to other lighting companies or audio gear. But midi go ahead and ask. Chris is our midi expert so he will probably be able to help you more.
Sincerely,

i also have one more problem when i connect the interference (mydmx) to my computer and open the software it still opens in demo however the red power light is on and also the one at the back where the dmx cable but the usb light is off and it only turns on when i plug the usb to it after 2 second it goes off.

Hey eloras please only post the same question once. someone will get back to you but it may take time. to avoid confusion please only post the same question once. Let me look into your issue and i will get back to you.
Sincerely,

The MIDI Trigger Finger question has been asked before. I can't answer that because I'm not familiar with it.

The chances are it works of CC data. If so, it is more oriented as a channel-type controller.

Using something like the Korg nanoKONTROL, it gives you fader and knob control. The item is so soft you can program the buttons to be note on triggers as well.

To find the way that the trigger finger would work best to you would be to really dig into the manual. Personally, I don't think it's an ideal option for MyDMX.

Also, to the dongle, where you've cross-posted:

Boot with the hardware UNPLUGGED. After booting up and logging in, plug in the hardware. Wait for the happy sounds, then launch MyDMX. It just works better that way.

The more knowledge we choose to share about MyDMX, the better. I found out about the Korg nano-series via a posting on here. I then discovered the nanoKontrol and was "hey, that might work good with MyDMX", and you know what? It can and does work great with MyDMX.

I share a lot of what I find, good and bad, about MyDMX. About the only thing I won't share is the show file I've made for the big show I am working on, but that's something totally different. I learned a few things through doing that show, and I shared that knowledge.

Akai also makes some low-cost(more than the Korg nano's) controllers which may also be of interest. I know there are tons of other controller options available as well.

This sharing saves people like you TIME and hopefully MONEY. In your case, maybe the Trigger Finger rocks and we should all own one, or maybe for MyDMX, it blows and we should avoid even considering using it for MyDMX, but it kicks butt for other apps.

sorry for the cross posted
ok i try the recomendation you gave me and it works but now it does not want to load the pre-program show

I don't have MyDMX on the computer I am on right now.

I think by default, MyDMX does not automatically load the "last saved show". You have two choices, both are simple. Either open your show file from the recents listing or via the OPEN function, or else go ahead and use the option to open with the last saved show.

I won't make a recommendation either way, it is what works best for your environment. For me, what works best is opening with the last saved show automatically. I only have 2 shows: My "catch all" selection of scenes, and then a show that is highly syncronized to a film for a shadow-cast type performance.

Also, double check that you're running the latest version of MyDMX, which is available via the ADJ web site. I'm assuming you're new to MyDMX, and are operating off the version that came with the hardware. There have been several improvements to MyDMX and the driver since whatever was on the CD that came with the dongle. The driver still needs a bit of work though.

im kind of new i own mydmx for about six months now but recently i been trying new thing anyway i did try those two options and none of the works, i also dowloaded the lataes version of mydmx. any more options

MyDMX is NOT intuitive when it comes to MIDI and control/triggering via MIDI.

Issue 1, and this isn't really a "problem" issue, but one you need to be aware of.
When starting up MyDMX, you need your MIDI gear already plugged in. Chances are, 99% of you are using a USB dongle or a USB controller that acts as a MIDI device. Whatever it is, unless it hands OFF a MIDI port, the device(s) provided MIDI connectivity(MIDI interface or USB-MIDI device) must be plugged in before launcing MyDMX.

Issue 2: This is a bit more complicated and again, myDMX is not on this workstation. There are two types of MIDI control MyDMX works off of. One is CC(continuous controller) information, which is ideal for controlling DMX channels/faders. The other is note on, which is ideal for triggering scenes.

Triggers are programmed into the scene in the EDIT tab. You'll see the scene, and to the right will be a Trigger row. Click in there. This is where it will allow for a trigger to be learned. When you see it "waiting for MIDI", hit the key or pedal button you want MyDMX to trigger that scene via, and that's it: the window vanishes and the trigger is learned.

Fader/channel CC control is also learned via right mouse clicking the fader strip in MyDMX and "Learn MIDI" is selected. Again, the window shows up, move the controller you want to use and it learns it.

MyDMX won't work via default with anything for MIDI. It has to be told/shown everything.

I am using a Korg nanoKONTROL, which is a 4-layer "fader control surface". Each layer has 9 faders, 9 knobs and 18 buttons. Times 4, that gives you a lot to work with. Other folks have reported using a nanoKEY, and I see no reason why a nanoPAD wouldn't work well either. It just depends on what your needs are. For me, I need channel control, so the nanoKONTROL is ideal. If I wanted scene triggering, the korg nanoKEY would be my choice. But, since we're talking foodpedals, the korg nanoPAD, designed to be a percussion controller, would be a better equivalent. MyDMX really doesn't care what you're using, it just needs to be told what to react/respond to. The nice part about MyDMX not caring is that there are really little to no restrictions as to what you can and cannot use. The bad part is that it simply requires users to pay attention more and use their brains a bit more as well.

Regardless if you are in DEMO or USB mode, MyDMX will respond to MIDI devices.

DO note that MyDMX has bad MIDI implementation and does not install itself as a MIDI device. The only way it can respond to MIDI is for a true INCOMING signal must hit on on a MIDI IN port on the USB adaptor or USB to MIDI controller(with MIDI ports). You can NOT trigger from "within the box" because MyDMX does not provide an interface for that. As such, it's highly recommended by me that you DO NOT run your sequences/DAW on the same machine as MyDMX if you expect to trigger MyDMX, it's a recipe for failure.

Also, another word about triggering scenes: 1 trigger per scene, which would be "start the scene".