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Bi-directional LED feedback (Novation Circuit)

Submitted by nicsnutzius on Sun, 11/03/2019 - 16:13
Control Surface Studio User

Hi there,

After a few months of break between creating my first script with CSS, I just noticed that there is a new possibility to integrate bi-directional LED feedback for controllers. I already had that on my wish list, please take a look on the original thread:

However, when trying to add bi-directional feedback to my Novation Circuit script I'm facing the following issues:

1. When reinstalling the old script (without changing anything) it shows up but won't work in Ableton Live 10.1. I already had a look at the 2.5 update announcement and made sure that global LED feedback for the controller and the script is turned on. I assume that this might be the main problem.

2. I had a look at all the tutorials on LED feedback but can't make it to work.. The eight LEDs under the macro knobs of the Novation Circuit should generally represent the state of the eight macros in Ableton in a range of 0-127 (dimmable).

3. A previous added controller in the controller area (TouchOSC) is just gone. I saw that CSS does save all controllers and scripts under the user directory but I can't make it to reimport the controller JSON file into CSS. A message appears that says 'not json files'.

I would be glad if somebody could help me out on this. This is somehow the last step to make the script complete!

Thanks in advance.

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3 Responses


John Carney
Forum Admin

Hi nicsnutzius,
Are you using the latest version of the App? (currently 2.5.2).

Control Surface Studio User

Hi John,
Yes I'm on the latest version of CSS.

John Carney
Forum Admin

As the LEDs you a referring to are not ring LEDs (like on the twister for example) and just a single light essentially, I'm thinking they will have their own MIDI channel/type/values which are different to what the encoders use.
If this is the case then you would need to use the 'send feedback to' option to send the feedback to the correct place.
Do you have led feedback working for the other pads on the circuit?

Maybe try creating a new controller and script using 2.5.2. It's possible scripts/controllers built with older versions could have some issues with feedback.