Hello, as the title says:
Is there anyone who as ever been able to make the old Nexus expansions work in Nexus 5 ?
I have been trying for hours now, I really appreciate any tip you can give.
Thank you for your time have a nice day.
Hello, anyone ever had the same problem?
My keylab 88 MK3 is not recognized as a midi controller after setting the parameters for my Roland RPU-3.
I did exactly what the AI told me to do. Here is what I did:
**Here's how to set up the Roland RPU-3 with the Arturia KeyLab 88 Mk3:**
### Hardware Connection
The **Roland RPU-3** is a triple pedal unit with **three separate 1/4" TRS jacks** on the back (one for each pedal: Damper/Sustain, Sostenuto, and Soft).
The **KeyLab 88 Mk3** has **three pedal inputs** on the rear panel:
- **Sustain** (1/4")
- **Expression** (1/4")
- **Aux** (1/4")
**Connection steps:**
Plug the **Damper (right pedal)** cable from the RPU-3 into the **Sustain** input on the KeyLab.
Plug the **Sostenuto (middle pedal)** into the **Aux** input.
Plug the **Soft (left pedal)** into the **Expression** input (or swap Aux/Expression depending on preference).
You will need **three standard 1/4" TS or TRS cables** (mono is usually fine).
### Configuration on KeyLab 88 Mk3
The Mk3 is very flexible — all three inputs can be assigned to almost any MIDI function.
#### Best Recommended Setup:
| RPU-3 Pedal | Connect to KeyLab Input | MIDI Assignment | Notes |
|-----------------|--------------------------|--------------------------|-------|
| Damper (Right) | **Sustain** | CC64 - Sustain | Standard |
| Sostenuto (Middle) | **Aux** | CC66 - Sostenuto | Standard |
| Soft (Left) | **Expression** | CC67 - Soft Pedal | Or CC11 Expression if you prefer volume control |
### How to Assign Pedals
Press the **Settings** button on the KeyLab.
Go to **User Program** mode (recommended) or use **MIDI Control Center** software (better for deep editing).
Select the pedal input (Sustain / Expression / Aux).
Assign the correct **CC number**:
- Sustain → CC 64
- Sostenuto → CC 66
- Soft Pedal → CC 67
You can also calibrate the pedals directly on the keyboard (especially useful for half-damper on the sustain pedal).
### Half-Damper (Continuous Sustain)
The RPU-3 supports half-pedaling. On the KeyLab Mk3:
- Go into pedal calibration/settings.
- Set the Sustain input to recognize continuous values (not just on/off).
### Tips & Common Issues
- **Polarity**: Roland pedals are usually **negative polarity**. The KeyLab Mk3 handles this well, but you can reverse polarity in the settings if a pedal is inverted.
- **MkII vs Mk3**: The RPU-3 worked very well with the KeyLab 88 **MkII** according to many users. The Mk3 behaves similarly or better.
- For best results, use **MIDI Control Center** (Arturia's software) to fine-tune the assignments and save them as a User Program.
I did all of that, but now my keylab 88 mk3 is not recognized by my softsynths anymore even Arturias one, and MIDI control center is giving me a message saying ''Failed to open the device. Please verify the device is not in use by another application''.
But when I close that window I see the keyboard in device and it says connected in MCC. I deleted the drivers, the softwares, reinstalled everything. Did a factory reset in Global on the keylab. Nothing is helping.
Anyone has any tips to solve this please? Seriously I never had so much trouble to make a MIDI controller work to play softsynths. And btw, before touching the parameters to make my pedal unit work, I was able to play with any softsynth.
Thank you for your time have a good evening.