Hi! I got to complete the treble key with midi and to increase the number of analog inputs for the arduino i used a MCP23017, and it worked just fine. The only problem i got is that the response in not so great. I believe the travel of the magnet is very important. Maybe with a better circuit for the hall sensor can be obtained better results.
![[Bytes #2-3] Accordion Mic Pickup - How I Made One](http://i.ytimg.com/vi/M1mdWKAuyvo/mqdefault.jpg)
Hi! I got to complete the treble key with midi and to increase the number of analog inputs for the arduino i used a MCP23017, and it worked just fine. The only problem i got is that the response in not so great. I believe the travel of the magnet is very important. Maybe with a better circuit for the hall sensor can be obtained better results.
Brother I want to do this to my harmonium. It's modified variant from India.
Great video.What is price for full schematic for accordion 140 bass
Who would modify my accordion for midi
clever guy