From Trammell Hudson's Projects
One of my more fun projects was developing the r2r hardware and software library to turn oscilloscopes into XY displays. I really like the look of the vector monitor lines and hope to redo this with analog line drawing hardware sometime. I've since written Space Rocks, an Asteroids inspired game, and made a Twitter oscilloscope with the hardware and software. Read on for details about how vector displays work...
Vector displays with MAME
I've converted a Vectrex to an Vector display and am driving it with a Teensy 3 plus an SPI DAC. Using a modified version of MAME, I'm able to write the vectors to the Teensy over USB, which generates 12-bit lines using Bresenham's line algorithm and DMA to transfer the points to the DAC. This provides a nearly glitch free way to display the games and artwork. Read on for more details...
The Tektronix 1720 vectorscopes are available for $20-$50 on eBay since most TV stations are decomissioning all of their analog NTSC gear. It is a cheaper alternative to the Vectrex for art projects or a compact MAME display, although the beam is not quite as sharp. Read on for more details...|Tek 1720
This 1940's Cathode-Ray oscilloscope was converted to a vector display and to test out my font rendering/rotation it was configured to search Twitter for "I" and display the most narcissistic tweets it found. The font very fast to draw and was inspired by Asteroids. Read on for more details...
For the 2013 Interactive Show I wrote an Asteroids inspired game called "Space Rocks". This 1940's Cathode-ray oscillograph was used as a XY monitor driven by my Teensy + dual R2R vector display driver. A cast-off 1980s IBM analog joystick was wired into a Teensy's analog input pins for control. Read on for more details...
Pages in category "Vector display"
The following 19 pages are in this category, out of 19 total.