In present times of technology, development boards are one of the most useful
and inexpensive instruments we can afford. Their applicability extends to many
areas of electrical engineering, especially experiments and general development.
Some of these development boards contain different extensions, like our STEMLab
development board. These expansions can significantly improve practicality, as
well as the ability to emulate certain application systems
The main objectives of this task were to build and demonstrate a FPGA piano (signal generator) with the help of a STEMLab development board, executing
some measurements/simulations with the help of STEMLab dedicated applications/programs and general problem solving for any issues that might arise during
the processes. The demonstration needed multiple factors together, two of them
are the external peripheral device and a manufactured signal amplifier. The main
procedure is taking place in the C-program, where the algorithm is manipulating
information between the external peripheral and development board extension
(FPGA).
For measurements, we used the application "Oscilloscope" and "BodeAnalyzer", which are already built into the development-measurement board.
After the given measurements we evaluated them in identical circumstances (circuit), with a simulation program called LT-Spice. Most of the simulations were
smiliar to the measurement results, but only after reconstructing the ".sub" text
file of the LM4880 operational amplifier. The correct version of this simulation file
could not be located online, so we had to create our own, based on the availability
of parameters in its data-sheet.
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