Inside Triple Pedal, modification

[pasrick]

If you want a generic damper pedal part to replicate exactly how the Nord triple pedal works, you need 4 microswitches and some resistors as shown in maxpiano's diagram in this thread.
You might be able to modify an existing pedal, but I bet it will be quite difficult to first find the right place to put the switches inside it and secondly to calibrate (by position or height) so the switches operate at the right positions along the travel of the pedal.
If you find a way of doing this, please let us know.

[parencibia]

Hello all:

First of all, thank you Patschi because your post is the only guide I could find over the Internet on how to dissasembly the Nord triple pedal.

I had to dissasembly it because the spring under the right pedal broke (I swear I didn't push it like a possessed freak ). It looks like the spring quality was not very good. Anyway, the point is that after dismantling it I found two identical plastic pieces inside the pedal cover that I don't remember removing, so I have no clue where I should put them back. Can anyone help me to find out where I should put them when I am assembling the pedal please?

I attach a picture of one of them, so that you can recognize them.

I plan to go to a local shop to try to find a similar spring. If anyone has any other suggestions to find the exact same spring size and resistance, I'd also appreciate them.

Thank you in advance!

[pasrick]

I see this thread is a year old but I just found it today because; even though I have the Nord triple petal, I have always wanted a single more portable petal that provides the same sustain function as the Nord triple petal. I too am frustrated that Clavia does not offer such an item. While I could live without the petal noise if I had too, I really, really hate to do without the half-petaling function. The solution provided by Maxpiano is quite intriguing but also a bit beyond my competence level as a do-it-yourselfer. Does anyone know if it is possible to do a more basic mod of a Roland DP-10 or a Yamaha FC3A petal that would allow it to have half-petaling functionality with the Stage 2. I tried a factory issue Yamaha FC3A and it doesn't work as is, I wondered about trying a Roland DP-10 and after reading this post I know now that it does not either, at least not without the described modification. Does anyone have any other suggestions?

Hi pasrick, we already answed that: continuous sustain pedals using a potentiometer (all models you have listed) won't work as they cannot be modified to that purpose just using passive components or circuit rerouting (please read all thread from the start for the details)

As an alternative if you are using a secondary master keyboard which can accept continuou sustain pedals you can use it and program it send the related MIDI CC to the NS Global MIDI Channel or (last not least) if you don'use a second keyboard) you can use a MidiSolutions Pedalcontroller.

PS: In theory you could also modify a single "open at rest" on/off pedal (the way I did with the rightmost pedal of the VFP3) then properly recable it to a stereo plug (but I haven't tried, when playing live in a band I just use an on-off, no eed really for Pedal Noise or Half Damper subtleties). But you need expertise and also accept the risk of damage and/or void warranty.

First off, thank you Maxpiano for the reply. I thought I had read the entire thread but it turns out I was only on the last page. My bad.
For better or worse my second keyboard is a Stage 2 Compact so I can't use it for the sustain of my 88 without using the Nord triple petal, oh well. The MidiSolution Pedalcontroller seems to have promise though, I hadn't considered that solution. Thanks!

[parencibia]

Hello all:
...
Anyway, the point is that after dismantling it I found two identical plastic pieces inside the pedal cover that I don't remember removing, so I have no clue where I should put them back. Can anyone help me to find out where I should put them when I am assembling the pedal please?

I attach a picture of one of them, so that you can recognize them.

Thank you in advance!

This thing belongs to the inside of the bottom plate preventing the rear rubber feet from being pressed into the housing.

[parencibia]

Thank you SO much Patschi!!!

[guentergunter]

I did some further research and have been able to produce the appropriate MIDI CC data: See thread

With these values, the problem of a too loud sounding "pedal noise" feature is gone for me

By the way: Half-damping seems not to work with my solution. Anyone an idea?

[groovejazz]

How about the other way around and taking the electronics of the triple pedal in a single padal?
Many guys in the forum have reported, that their triple pedals are broken. So is mine, sostenuto and the middle pedal stopped working, but the damper with noise and halfpedal works fine. Although in most of the reported cases, the reason was a broken cable only, I think about, if its possible to make a single and more handy pedal out of it. I think the problem would be to cut the circuit board.
If the triple pedal breaks often it would be easy to buy one of those...

...now I changed the cable and everything works fine, but still it's big and heavy

[awawa]

Hi, I am new to this forum. So if I make some mistake, please let me know!

First of all, I thank so much for User Forum members for valuable discussions!
Thanks for the information, I successfully built a converter from Yamaha FC3A to NORD pedal.

Instead of using MIDI function like this solution (nord-stage-forum-f3/custom-comprehensiv ... 14141.html), I used NORD pedal jack to use half damper function.

I used Arduino ProMicro for this.
The circuit diagram is shown below:

Circuit diagram

IMG_4501.png (855.93 KiB) Viewed 49112 times

The arduino code is below:

Code: Select all

#define LED 3
#define R1 9 // 10k
#define R2 8 // 4.7k
#define R3 6 // 2.2k
#define R4 4 // 880
#define PEDAL A0 // 880

#define THRESHOLD1 120
#define THRESHOLD2 350
#define THRESHOLD3 600
#define THRESHOLD4 850

int sensorValue = 0; // open 0 - closed 1023
int stateValue = 0; // open 0 - closed 4

void setup() {
  // put your setup code here, to run once:
  pinMode(LED, OUTPUT);
  pinMode(R1, OUTPUT);
  pinMode(R2, OUTPUT);
  pinMode(R3, OUTPUT);
  pinMode(R4, OUTPUT);

  digitalWrite(LED, LOW);
  digitalWrite(R1, LOW);
  digitalWrite(R2, LOW);
  digitalWrite(R3, LOW);
  digitalWrite(R4, LOW);
}

void loop() {
  // get pedal position
  sensorValue = 1023 - analogRead(PEDAL); // pedal position

  // convert FC3A pedal position to NORD triple pedal state
  if (sensorValue < THRESHOLD1) {
    stateValue = 0;
  } else if (sensorValue < THRESHOLD2) {
    stateValue = 1;
  } else if (sensorValue < THRESHOLD3) {
    stateValue = 2;
  } else if (sensorValue < THRESHOLD4) {
    stateValue = 3;
  } else {
    stateValue = 4;
  }

  // push switch according to the state
  if (stateValue == 0) {
    digitalWrite(R1, LOW);
    digitalWrite(R2, LOW);
    digitalWrite(R3, LOW);
    digitalWrite(R4, LOW);
    digitalWrite(LED, LOW);
  } else if (stateValue == 1) {
    digitalWrite(R1, HIGH);
    digitalWrite(R2, LOW);
    digitalWrite(R3, LOW);
    digitalWrite(R4, LOW);
    digitalWrite(LED, LOW);
  } else if (stateValue == 2) {
    digitalWrite(R1, HIGH);
    digitalWrite(R2, HIGH);
    digitalWrite(R3, LOW);
    digitalWrite(R4, LOW);
    digitalWrite(LED, LOW);
  } else if (stateValue == 3) {
    digitalWrite(R1, HIGH);
    digitalWrite(R2, HIGH);
    digitalWrite(R3, HIGH);
    digitalWrite(R4, LOW);
    digitalWrite(LED, HIGH);
  } else {
    digitalWrite(R1, HIGH);
    digitalWrite(R2, HIGH);
    digitalWrite(R3, HIGH);
    digitalWrite(R4, HIGH);
    digitalWrite(LED, HIGH);
  }
  Serial.println(stateValue);

  delay(1);
}

Finally, I built this.

Device photo

無題.png (6.8 MiB) Viewed 49112 times

Connect Yamaha FC3A to the right TRS jack and connect NORD and this device using the left TRS jack via stereo cable, and then supply power to proMicro via USB, and I can play NORD with half damper function using Yamaha FC3A.

[gitarrenzupfer]

awesome thread, awesome arduino-project from awawa,


a question about the triple pedal

Are midi-CC data sent when the sustain pedal is pressed (with half-pressed and damper noise)? If yes, which?

CC# 64 0|127 or something else...?

[maxpiano]

awesome thread, awesome arduino-project from awawa,


a question about the triple pedal

Are midi-CC data sent when the sustain pedal is pressed (with half-pressed and damper noise)? If yes, which?

CC# 64 0|127 or something else...?

Yes CC64 but I don’t remember if anyone has analyzed the values sent at each intermediate step (a MIDI Monitor on a Nord using the original would quickly reveal that), you can try dividing the 0..127 interval in equal steps as a start.