Enable the G2X features in the G2

ersatzplanet · Joined: Jul 24, 2005 Posts: 63 Location: Seattle, WA, USA

Since now the G2X is no longer in production, and I believe the PCBs to be the same, I would love to see the internal extra G2X mod wheel connectors enabled on the G2. Then I can add a joystick!

ian-s · Posted: Sat May 19, 2007 5:09 pm Post subject:

Yes, I've been thinking about this as well. The microcontroller used doesn't have a built in AtoD so it must be external. I count 6 sources on a standard G2,
Mod Wheel
Pitch Stick
Aftertouch
Pedal 1
Pedal 2
Volume knob (notice you cant change volume during patch load?)

Since multi channel AtoD would probably be 8 channel, the other two G2X wheels are probably connected to the last two channels.

Maybe the G2X has a small extra board with buffers for the extra modwheels.

Along with the pedal input, that would give three CV inputs.

Burp · Posted: Sun May 20, 2007 12:02 am Post subject:

This would be very nice!
Maybe someone can look inside a G2X to see how the extra wheels are connected?
-Jan

Wout Blommers · Posted: Sun May 20, 2007 12:22 am Post subject:

Burp · Posted: Sun May 20, 2007 12:32 am Post subject:

Nice Wout!

Seems like a littel extra pcb board with no extra electronics? (just a board to mount connectors?) Or am i missing something.

Wout Blommers · Posted: Sun May 20, 2007 1:45 am Post subject:

There is no electronics on the board, only connections.

Connections are made on the PanelControlBoard, if open, at the top the PitchStick, (backside of the RotaryDial) and the large red 10 pins connector of the three Wheels.

Two important remarks! In my machine the ControlPanelBoard is hand labeled as G2X! It's also a preproduction model, so there can be differences!

All pots are, you can guess, 10K.

Wout

Wout Blommers

Maybe I'm wrong...
There's a 10 pin connector to the three wheels.
Each pot has three connections, from which one is ground (?)
The three LED's will surely use the same cables.

I assume the blue strip in the connecting cable is ground.
Two strips for three wheels each makes seven.
One to power up the Led's makes eight...

Which pin is hot and which isn't?

Burp · Posted: Sun May 20, 2007 2:43 am Post subject:

he Wout, if you're right then it shouldn't be that difficult!
Maybe some project in the future for me Wink

Your modded NM's are great idea, i always wanted to do that myself, but never actually did it... but made my own MIDI joystick controllers (doepfer pe..).

OT but maybe interesting:
On the picture my joystick controller, here controlling the micro, in a setup with two Kaosspads which i use a lot for live-sampling-sound-mangling.
It's an ongoing project, i want more buttons on it and at the end another front Wink

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ersatzplanet · Joined: Jul 24, 2005 Posts: 63 Location: Seattle, WA, USA

Up to recently I had a NM! also and popped it open and wired it up to have a joystick but never got the time or nerve to put the sheet metal on the drill press. I sold it to a gent who will be doing that and a bunch more to it. It is a lot simpler to add mods to the NM1 since all the main pots are just providing voltages. I once asked on this board about the connectors on the G2 and someone said the programming was different on it from the G2X so one could't just connect to the header. Different ROMs i would assume - hence the G2X sticker on the pcb. Hopefully it is something that can be changed with a flash/software update on the unit. If so I doubt it would be much of a hassle for Clavia to do it. I can't think of any other differences between the units other than the keyboard whose velocity curves etc may be much different from the G2's but that seems trivial. They could even sell the little PCB if they wanted to.

-James

Wout Blommers · Posted: Sun May 20, 2007 2:14 pm Post subject:

I know, the info is well hidden, but here is the article (three times due to a transport failure) about the modification. The pictures are manipulated, because they were unsharp...

http://nm-archives.electro-music.com/010_NordModular/014_Interesting_Threads/Folder/JoySticks/JoyStick.htm

Wout

jafre · Joined: May 22, 2009 Posts: 6 Location: Portugal

»»» Wout Blommers & James Husted

Hi guys,

Any devellopment on this subject?
"How to add in G2 one Doepfer JoyStick (Alps 2x10k), using those connectors where the G2X's extra wheels are connected"

It seems to me if firmware tests the hardware for detection at boot time,
it should be no problem to have 3 octave or 5 octave keyboard.
Firmware should deal with it identifying the correct one, right?
Unless they made a specific version of firmware for each model.

Wout: could you be so kind and send some detailed pictures of the insides of your G2X for comparation?

best regards,
Jaime

jafre · Joined: May 22, 2009 Posts: 6 Location: Portugal

The last post includes as well ian-s and Burp, of couse!
Copy/Paste seemed not to include you guys!

Sorry,
Jaime

jafre · Joined: May 22, 2009 Posts: 6 Location: Portugal

ersatzplanet · Joined: Jul 24, 2005 Posts: 63 Location: Seattle, WA, USA

mtvic · Posted: Sat Jul 15, 2017 12:43 pm Post subject:

Missing my G2X

Dellen · Joined: Jun 18, 2022 Posts: 2 Location: Germany

I recently opened my G2 and looked for some place on the PCB where the additional wheels could be connected but I didn't find anything that looked like it.
So it would be nice if Wout could re-upload the pics since they seem to be dead right now.

Electromagnetic Wave · Posted: Thu Sep 08, 2022 3:40 pm Post subject:

Hey

Dellen · Joined: Jun 18, 2022 Posts: 2 Location: Germany

That's disappointing but thank you for the clarification.