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: https://www.youtube.com/watch?v=T_n8PtMMLiQ It looks like null 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/PicoVectorscope Examples: https://github.com/OliWright/PicoVectorscopeExamples 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: null null https://www.youtube.com/watch?v=344oEu9vo7w https://www.youtube.com/watch?v=oDtiTSY0lIw https://www.youtube.com/watch?v=5FYF5uhCzAM https://www.youtube.com/watch?v=WlYm5UC8X8Q https://www.pouet.net/lists.php?which=194 There's a short unedited capture of Space Rocks in Space! in HDR here: https://www.youtube.com/watch?v=pD4ORnX2ipk