142 Bad VGA ODE Plotter
142 : Bad VGA ODE Plotter
- Author: Marcus Alagar
- Description: A very bad, very unstable plotter of systems of 2 ODES
- GitHub repository
- Open in 3D viewer
- Open in VGA Playground
- Clock: 25175000 Hz
How it works
This is a very, very bad plotter of select systems of 2 ODEs.
The system graphed is shown below:
dx/dt = ax + by
dy/dt = cx + dy
Where, for now, the coefficients are fixed to
a = 0
b = -1
c = 1
d = 0
How to test
After starting project, bring reset from low to high in order to begin the plotting.
Then watch as the point gets plotted according to the above ODE.
To reset the plot from the start, simply cycle rst_n.
External hardware
Uses the TinyVGA PMOD connected to the dev board's OUT header.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | R1 | ||
| 1 | G1 | ||
| 2 | B1 | ||
| 3 | VSync | ||
| 4 | R0 | ||
| 5 | G0 | ||
| 6 | B0 | ||
| 7 | HSync |