@dbini said:

I wonder if Python could achieve a similar result?

 Python or Javascript, shouldn't have any problem with this.
Just restart a timer when a new value arrives, and have a pulsed trigger that has the time checked constantly, making updates as needed.

Similar to @jandraka
I have used something like: Delcom Products Inc. - Product Details Page in the past. 
Not the cheapest, but easy and flexible.

Hi,

I bought one of these usb key and use it to control the "Pause Engine" in Isadora. It's not very robust, but it works well.

Best

Javi

@juriaan - would it be hot-pluggable? 

@dbini

Well you can still attach a usb cable to it, up to you

@juriaan - and therein lies a problem - battery power=compromise of reliability. a Korg NanoKontrol in a box with a USB cable is going to be more reliable than anything that needs recharging, but the form factor is very different.

@dbini

With a lithium battery

@agentsimon2 - if it's wireless, how is the ESP8226 powered? 

@dbini I would definately use an ESP8226 with a small button. You can send the information wirelessly using OSC to Isadora. No wires, much neater. MArdiono has an example button with no bounce script you could use to create an OSC signal and once in Isadora you can read it and trigger anything you want. 

@otto22 Hi. This might help https://forum.arduino.cc/t/2-s...