Examples of Midi instruments
Harpsichord with Unmanned Awasome Virtuoso MK2
Automated by Malcolm Messiter.
A particular assembly was realized to be simply put on both keyboards, without any modification of the instrument. Electromagnets are 20 ohm tubular type (750 mA under 15 volts). To be able to pilot these solenoids it has been necessary to modify the decoder boards Midi2org_64 which can drive no more than 500 mA by output. After modification, there is only 32 output by board but each can drive 1 Amp. There are 61 notes for each keyboard, one thus needed 4 Midi2Org_64 boards, but one don't need anymore the big static relays which were used in the first version.
Click on the picture
One can see all the assembly which will be put on the keyboards
To watch it in action: //www.youtube.com/watch?v=UbwfAc0AKhk&feature=youtu.be
Accordion automated by Alvaro Passari.
Solenoids used in this project:
Another midi accordion
This is Daniel's one. Here, bellows are not actuated, the air is sent inside by a small vacuum cleaner (used as a blower). It uses a Midi2Org_64 board for the right hand buttons and the left hand fundamental basses (not the chords). Note the originality of the "springs" which maintain the pressure in bellows. SD midi reader from his own fabrication. The quite small electromagnets are driven with 30 volts DC to be able to pull buttons.
To watch it in action: c'est ici
Duet with a midi organ, c'est par là:
Small midi reed organ
Still under construction, it is the Daniel's organ (another Daniel). Midi2Org_32 board and Midilector. Solenoids are: TDS-06A 12VDC-2,1W. Resistance is 68 ohm. They are coming from Conrad's. We are looking forward to seeing the following.
Will your next instrument be here soon ?
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