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The Bollion.fr module is a prototype Midi interface made to measure and intended to sound a programmable chime for Tibetan bowls, gongs and bells. BOWL, BELLS AND GONG SEQUENCER - robotic (Arduino, C ++, B4a)
The Bollion.fr module is a prototype Midi interface made to measure and intended to sound a programmable chime for Tibetan bowls, gongs and bells.
The operation is as follows:
The note (s) played from a keyboard with Midi output or if you are connected to a Midi sequencer (Cubase for example) are sent via Midi cable to the Bollion module.
To avoid any risk of feedback, the Midi input of the Bollion module is equipped with an Optocoupler (E6N138) which transmits the signals to an Arduino Mega card which via software (C ++) processes and redirects the signals (notes and velocities) in order to to control servomotors or solenoids.
This via a 16-channel PCA9685 Driver which controls the PWM pulses for the servomotors.
The PCA9685 driver has its own power supply and can therefore control more powerful servos for Gongs for example.
The Driver PCA9685 is limited to 16 channels, but it is possible to connect 62 in series, which would therefore control a maximum of 992 servos (notes).
The interface is equipped with potentiometers that allow precise adjustment of the travel of the servo motors or the sensitivity of the solenoids.
Mallets of different lengths and weights can be mounted on these servos or on the solenoids to ring bells, bells, Tibetan bowls or gongs.
The system is multitimbral and allows you to play several notes simultaneously with, however, a slight latency due to mechanical transmission.
https://bollion.fr
VIDEO
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