How to connect MegaDrum to Roland's TD-12

[dmitri]

Okay, since I have some more spare time atm I will finally finish setting my MegaDrum up to control my Roland TD-12.
I sent Dmitri my Chip, he encrypted the Bootloader and I just installed the megadrum644_56_20110417.bin at 20Mhz - I hope that's right. I checket the crystal next to the MC and it is labeled 20.000 (x1) while 16.000 (x2) is far away from that on the board. And my Atmega is labeled: Atmega644 20PU 0808.

For using the QuickAccess (which is "pull down hihatpedal and select a pad", right??) I need to connect a HiHat controller. Since I'm using a VH-12 on my TD-12 which is not supported by MegaDrum I'm wondering if I just could solder a button to the HiHat-pedal input and use this knob for quickaccess. Will it work?


Edit: Is there any indication if I press this button?
I just soldered a switch to shaft and tip (but not to ring) but I couldn't get QuickAccess work?!

Answered in another thread where you posted the same question.

Edit2: Since I did the update I couldn't find any settings for midi-speed. Is it detecting automatically right now? Or is there any default-speed which will word in every device-combination?

See "Changes in version 20110207" in viewtopic.php?f=3&t=1075

[Cysign]

Hey guys,

since I updated my MegaDrum with the encrypted bootloader, I couldn't get it work properly.
First I alwas got an Midi-communication-error from my TD-12.
Today I tried to connect the MegaDrum thru the TD-12 with my MIDI-port which was connected to my computer.

Usually, even when TD-12 didn't get the MegaDrum's MIDI-signals, my computer got them thru the Midi-port. But nothing happened.

Parhaps I used a wrong firmware?
Now I've installed: 20110417 20Mhz.
Midi-Chain-ID is Midi-Channel?

Edit: Now as I'm oing to update my MegaDrum again, I'm still wondering, if 20Mhz is the right firmware for my Syntex-Kit.
Since X1 is labelet "20.000" and X2 is labeled "FGQ12.000". Chip is still "Atmega644 20PU 0808".

[Cysign]

4. In MegaDrum select correct frequency for your Atmega crystal by pressing the key UP. Each time you press UP it will cycle one step through 16MHz-20MHz-24MHz-12MHz. If you use a 16MHz crystal for Atmega, you don't need to press UP since 16MHz is a default start up frequency for the bootloader.
5. In MegaDrum press the key DOWN. It will display 'StartUpdateOnPC'.
6. From a command line run the utility, e.g.:

When I choose 20Mhz and press the DOWN-key it won't show "StartUpdateOnPC".
It shows white blocks.
But update now still works...


Edit: Since I did the update to 644_20110621, I get a MIDI-signal for my computer on Soft-Thru with TD-12.

MegaDrum (Midi-out) -> (Midi-in) TD-12 (Midi-Out) -> (Midi-in) Midi-Port (USB) -> Computer
TD-12 is set to Soft-Thru = it doesn't process the MIDI signal from other devices.
Now I know that MIDI works fine again and I can go on with setting it up for my TD-12.

[Cysign]

Puh, I finally got it. It communicates with my TD-12 and now I can go on editing the midi-notes