osresearch / vst

Software for the v.st vector boards
GNU General Public License v2.0
79 stars 15 forks source link

Added support for vacuum tube oscilloscopes #27

Open FlamingSpork opened 3 years ago

FlamingSpork commented 3 years ago

I have an Analab Type 1100 from the year 1960, which uses vacuum tubes instead of transistors and is thus slower to respond than more modern scopes. I added CONFIG_TUBE with constants that worked in my testing.
Brightness could not be tested because the scope requires somewhere between 5 and 50 volts to blank the screen, and I haven't figured out the necessary additional circuit to have the brightness DAC drive that much voltage.

Additionally, I have the board turn on the rightmost LED when the test pattern is first drawn and switch to the middle LED when receiving lines over the serial connection.