Midi Xylophone atmega32

No description available.

Category:

Music

Tags:

• midi
• atmega32
• music
• xylophone
• mariba
• electronic

[verakounda]

hello until today im investigating about that,but i dont understand very well how use the multiplexor.can you explain me a little.thank

[milosievic]

@verakounda It's quite simple. Atmega32 microchip has 8 ADC channels (I'm using 5). My xylophone has 5 multiplexers. Each multiplexer 8 inputs are connected to 8 piezo plates. Each multiplexer output is connected to it's own ADC channel. My microchip sets an address of 0 (for example). This address goes to each multiplexer and each multiplexer allows it's first piezo signal to it's own ADC channel. Then microchip samples data from each channel. After that it increases the address, and so on.

[milosievic]

Well not exactly... microprocesor has only 8 ADC. There are about 40 notes so I'm using multiplexer.

[milosievic]

hi!

Hmm i thing that could be possible... But i don't know what kid of signal is

generated by the keys, is it voltage or current. If you could figure it out you can just simulate that signal. In my xilophone there is a small piezo plate under the wood. It generates a voltage signal which is measured by the analog to digital converter.

I think it should be very similar in your controller. If you have some sort of measuring device like osciloscope you could check this signal

[verakounda]

hi thank for answer.

whats analog to digital conveter you use. do you need one for note?

[verakounda]

hello im from spain and i play xylophone,im trying to do one like your one.

but realy i need help.

i taked a midi key controller and i take de electronic sistem and now i want to change de keys for wood ,and made a xylophone midi.Do yuo think that is posible? and do you know whats mic i need?

thank you