A demonstration of using a Raspberry Pi Pico and a couple of DACs to drive an old analogue oscilloscope in XY mode.

It can drive the 'scope as a vector display, so you can make classic vector games. But it can also drive the 'scope in raster mode, achieving a grey-scale display by carefully adjusting the speed of the beam as it sweeps across each scanline. Hence 'velociraster' :-)

Addendum: I've been made aware of this video:    • Oscilloscope as a Display (ESP32, DAC...  
It looks like    / @bitlunislab   did the Velociraptor technique back in 2017. He didn't give it a cool name though, so there's that 😃

00:00 Intro
02:11 Boring Technical Details
08:02 Vector Demo
10:32 Space Rocks in Space!
11:58 1-Bit Raster Demo
12:59 Velociraster!

PicoVectorscope framework code: https://github.com/OliWright/PicoVect...
Examples: https://github.com/OliWright/PicoVect...

Drawing things on an oscilloscope is not original! Lots of people have been here before. The only thing I'm bringing to the party is using a Pi Pico - and possibly the beam velocity modulation to adjust brightness.

Here are some links for more oscilloscope goodness:
   / @jerobeamfenderson1  
   / @ebajous_curves  
   • #144: Use Arduino Uno to create spinn...  
   • I built a scopetrex! Vectrex games on...  
   • #42: Composite Video on an Analog Osc...  
   • Playing Games on an Oscilloscope | Ar...  
https://www.pouet.net/lists.php?which...

There's a short unedited capture of Space Rocks in Space! in HDR here:    • Space Rocks In Space!  In HDR!!