Realisation of an idea I had for triggering changes in music using barcodes and my mobile phone - with a QR codes scanning app:
The codes, when read open a Web URL which in turns sends a program change message to the music software, triggering the entry of a new scene.
As you can see, getting a good angle with the reader requires some practice. Likewise, at this point in the realisation, the response of the software is a bit variable as well - sometimes the trigger is pretty snappy, sometimes not.
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