Uploaded December 2010 | Updated September 2026, 9 hours ago
Here's a project that I've been meaning to make for a few days and which, thanks to OpenCV and OpenLase, was a snap.
It's pretty simple, there's an independent projection app (OpenLase) and an independent sensing app using a webcam (an EyeToy) and OpenCV with the Python bindings and PyALSA for the MIDI stuff. Just about ~70 lines of code for the projection and ~90 for the sensor portion. Whenever the camera sees a dot move or disappear (from the position it was in when the application is launched), it plays a note.
I've pushed the code to my OpenLase repo at git.marcansoft.com/?p=openlase.git . Have fun!
Here's a project that I've been meaning to make for a few days and which, thanks to OpenCV and OpenLase, was a snap.
It's pretty simple, there's an independent projection app (OpenLase) and an independent sensing app using a webcam (an EyeToy) and OpenCV with the Python bindings and PyALSA for the MIDI stuff. Just about ~70 lines of code for the projection and ~90 for the sensor portion. Whenever the camera sees a dot move or disappear (from the position it was in when the application is launched), it plays a note.
I've pushed the code to my OpenLase repo at git.marcansoft.com/?p=openlase.git . Have fun!
![Work stream: Yak shaving USB^W FB and UART I/O devices on m1n1 [2021-04-15]](https://i.ytimg.com/vi/5kz2ttpN_iM/mqdefault.jpg "Work stream: Yak shaving USB^W FB and UART I/O devices on m1n1 [2021-04-15]
Lots of yaks on the way to the mmiotrace hypervisor
Website: https://asahilinux.org
Patreon: https://patreon.com/marcan
GitHub Sponsors: https://github.com/sponsors/marcan
In these streams I show how I work. I may or may not talk, and I may or may not read the chat. If you need to catch my attention, its probably best to ping me on IRC, check out asahilinux.org for details!
There is currently no set schedule for these streams, so subscribe and click the bell if you want to be notified when they happen.
I do not broadcast background music, for copyright reasons and because my music tastes may not match yours. I highly recommend bringing along your own music!")
![Work stream: Writing a hypervisor Pt.7 [2021-05-10]](https://i.ytimg.com/vi/5lJPlPOdlK4/mqdefault.jpg "Work stream: Writing a hypervisor Pt.7 [2021-05-10]
Mmiotrace hypervisor, maybe?
Website: https://asahilinux.org
Patreon: https://patreon.com/marcan
GitHub Sponsors: https://github.com/sponsors/marcan
In these streams I show how I work. I may or may not talk, and I may or may not read the chat. If you need to catch my attention, its probably best to ping me on IRC, check out asahilinux.org for details!
There is currently no set schedule for these streams, so subscribe and click the bell if you want to be notified when they happen.
I do not broadcast background music, for copyright reasons and because my music tastes may not match yours. I highly recommend bringing along your own music!")
