Hello everyone, high and low the project is taking better shape every day. We already have some computer drawings of the structure that will hold the solenoids on the keyboard and have started initial tests on the actuators control via a microcontroller.
soon climb the plot of this little practice and a more detailed drawings. With a little luck, the decoding of the MIDI files will be ready by mid of next week.
[Update / February 17]
promised Here are the diagrams of the tests performed with the microcontroller and solenoids.
8051 microcontroller used to control the movement of two solenoids through an RS-232 interface. We had a few problems because the current flow to transistor 2N2222 Tip 41 exceeded the limits of this (tip 41), causing physical damage to it.
In consultation with the teacher tried to redesign the circuit to have optimal performance, however, before implementing the new design, we conducted a further proof of the old replacing the transistor circuit 2N2222 transistor for a generic, run this to perfection.
Greetings to all.
Greetings to all.
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