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gzweigle / open-hybrid-piano

Building a hybrid MIDI digital piano
https://www.youtube.com/@gzpiano88
GNU General Public License v3.0
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HW: crosstalk #27

Closed gzweigle closed 7 months ago

gzweigle commented 7 months ago

In working on note-to-note consistency, I notice a slight cross-talk between channels (notes). Need to track this down.

davidedelvento commented 7 months ago

I suspect optical crosstalk from the sensors themselves. I noticed this in my preliminary testing and it is one of the reasons I settled on the QRE1113 rather than the CNY70

gzweigle commented 7 months ago

Interesting. I will investigate. Am thinking (hoping) that it is an issue with my test setup, not the circuits.

I am taking very precise test position measurements so seeing interesting phenomena. For example, measurements influenced by leaning against piano slightly during test!

gzweigle commented 7 months ago

test setup