Bit glitchy thanks to the top quality cardboard and gaffer tape box leaking light… but I finally got the optical punchcard reader working!! #raspberrypi #neopixel #opencv August 14, 2020February 14, 2021 | tonibuckby View this post on Instagram A post shared by Toni Buckby (@tonibuckby) Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)Like this:Like Loading...