Continuos control pedals plus switches organ project

[stefanuk]

John,

So, I need a second CPU to run 4 volume control pedals, and as many switches as I can. Could you maybe post the schematics and sysex for this?

[John]

Sure, please let me know the CC #s, channels, and switch functions you'd like to have (and any other details!).

[stefanuk]

What are CC's?

I nees 4 volume control pedals ( I was gonna use Behringer FCV 100, but I also bought four 10 K potentiometers to replace the original ones.

Besides that, is there a difference between momentary and on/off switches? I I was going to use them mostly for momentary, but is there a difference?

MIDI channels, is it possible to redirect MIDI in coming on channel 1 to come out on a different channel?

Then I would love to use anything I am not using already (2,6 and 1)

If that is not possible than anything but 1.

[stefanuk]

If the switches work just as keys on the keyboard- that would be awesome.

[stefanuk]

Do you need to me to order it first?

[John]

Originally Posted by stefanuk

What are CC's?

CC = "continuous control" or "controller". If you can specify which controller numbers (CC numbers) to use, that will allow me to write the config.

I nees 4 volume control pedals ( I was gonna use Behringer FCV 100, but I also bought four 10 K potentiometers to replace the original ones.

Ok. By the way, here's a list of CC numbers and their "standard" function:

http://home.roadrunner.com/~jgglatt/...ec/ctllist.htm

Besides that, is there a difference between momentary and on/off switches? I I was going to use them mostly for momentary, but is there a difference?

For the usual hold & release type note response, you should use momentary switches.

With latching switches, you'll have to flip a switch to turn a note on, and then flip it again to turn the note off. (which is ok, if that's the functionality that you want)

MIDI channels, is it possible to redirect MIDI in coming on channel 1 to come out on a different channel?

Not yet, sorry. Maybe in the future.

Originally Posted by stefanuk

If the switches work just as keys on the keyboard- that would be awesome.

Ok...in that case, use any kind of SPST, momentary (sometimes written "off-(on)"), normally-open switch.

Originally Posted by stefanuk

Do you need to me to order it first?

No. Sorry for the delay--I'm not always able to respond quickly to forum threads. I'll start on a diagram and get it posted soon...

[stefanuk]

I asked Brett Milan about CCs, I have a feeling it would not matter that much, the new Hauptwerk has learning feature, so anything can be liked to anything ( at least I am hoping...)

And, thank you, switches can be just as piano keys, easy. Sorry for being impatient, I am still a bit away from getting it together, but much closer.

[stefanuk]

And, I just realized that since I already started wiring, can you keep the matrix for the switches to 8 by something, like the Konn organ project?

[stefanuk]

And, Brett Milan said:

"You can use any controller number you wish (0-127)"

So CCs dont matter no more!

[stefanuk]

So, I rewired one of the pedals, and here are the numbers I am getting

The outer contacts of the potentiometer give me 9.8 KOm

Bottom to middle ranges from 1.6 to 5.7 KOm

and

middle to top changes from 8.3 to 4.3 KOm

is this workable?

[John]

Originally Posted by stefanuk

And, I just realized that since I already started wiring, can you keep the matrix for the switches to 8 by something, like the Konn organ project?

Ok. If we're using one MIDI CPU, we can connect 4 potentiometers, plus up to 96 switches for the keys. How would you like to use those switches?

Your photo appears to have much more than 96 keys. But we can wire up every single control by using multiple MIDI CPU units...

Originally Posted by stefanuk

And, Brett Milan said:

"You can use any controller number you wish (0-127)"

So CCs dont matter no more!

Ok, sounds good.

Originally Posted by stefanuk

So, I rewired one of the pedals, and here are the numbers I am getting

The outer contacts of the potentiometer give me 9.8 KOm

Bottom to middle ranges from 1.6 to 5.7 KOm

and

middle to top changes from 8.3 to 4.3 KOm

is this workable?

This can work fine. If you can provide some more details about the keyboard switches and note numbers, I'll put together a complete implementation...

[stefanuk]

OK, note numbers not necessary, all keyboards are taken care of, the switches are either combination buttons or sound selecting buttons, should work the same way with hote on- note off, with any numbers at all. I will have to trace each one to a switch on the screen which new Hauptwerk promises to make easy.

So, any numbers, preferrably in the 8 by something matrix, because I already have two rows of 8 wired...

Thank you!

[John]

Ok, so here's what the wiring looks like. Note that CT 19 can't generate a matrix select signal...so it is used for analog input, while CT 20 is used for matrix select.



And here's the sysex config. This generates notes 0-95 from the switch matrix, and generates CC 0-3 from the pots.

// Fixed Header
F0 00 01 5D 04 01
// Layer 00h
00

// CT 0-7: Matrix Data
00 00 7F 00 00 00
00 01 7F 00 00 00
01 00 7F 00 00 00
01 01 7F 00 00 00
02 00 7F 00 00 00
02 01 7F 00 00 00
03 00 7F 00 00 00
03 01 7F 00 00 00
04 00 7F 00 00 00
04 01 7F 00 00 00
05 00 7F 00 00 00
05 01 7F 00 00 00
06 00 7F 00 00 00
06 01 7F 00 00 00
07 00 7F 00 00 00
07 01 7F 00 00 00

// CT 8-18, 20: Matrix Select, MIDI notes 0-95 (00h-5Fh)
08 00 2C 00 00 00
09 00 2C 00 08 00
0A 00 2C 00 10 00
0B 00 2C 00 18 00
0C 00 2C 00 20 00
0D 00 2C 00 28 00
0E 00 2C 00 30 00
0F 00 2C 00 38 00
10 00 2C 00 40 00
11 00 2C 00 48 00
12 00 2C 00 50 00
14 00 2C 00 58 00

// CT 19, 21-23: Analog Input, CC 0-3
13 00 04 00 00 06
15 00 04 00 01 08
16 00 04 00 02 09
17 00 04 00 03 0A

// Footer
F7

Good luck!

[stefanuk]

Thank you!

[stefanuk]

John, is power also fed through G and plus as well as potentiometers? Would that affect the power supply?

[Jim McDougall]

Power run from + through the pot to ground. the slide picks the voltage from the pot according to its positon which is what provides the variable 0 - 5 v that is feed to the analog input. The closer to the G side og the pot, the lower the voltage

[John]

Originally Posted by stefanuk

John, is power also fed through G and plus as well as potentiometers? Would that affect the power supply?

Power input to the MIDI CPU is via the "DC IN" terminals. The MIDI CPU generates a regulated power output on the "DC REG" terminals.

So, connect your power supply to the DC IN, definitely not to the DC REG terminals. See the MIDI CPU hardware user manual for all of the power wiring details.