when i started building arduino brain machines i had a bunch of minipov boards left lying around, so i built one with uv leds. works pretty well. has it’s own font built in and room for about 950 characters of message. as presented here, there is an output bug at the end of the second line, but i reckon i’ll work on that in the morning. meanwhile, i can wave it around and wipe poetry onto a piece of butcher paper painted with fluorescent paint. here’s some not very good video of the chemical pov running the above code. the light does persist a little longer than it appears to in the video, but i think it will work better when i replace the current limiting resistors.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell with Google Hangouts On-Air is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.
i had a cool idea. get one of those self adhesive “exit” signs, clean off the green paint with acetone and IPA, and use the backing glue to hold it to a hard drive platter.
Then write as normal, while the platter is spinning with an infrared LED array to “erase” the remanent phosphorescence.
hi there ada..
i had a cool idea. get one of those self adhesive “exit” signs, clean off the green paint with acetone and IPA, and use the backing glue to hold it to a hard drive platter.
Then write as normal, while the platter is spinning with an infrared LED array to “erase” the remanent phosphorescence.
Voila, instant “scrolling POV”
🙂
-A
and with a little smd uv magic and analogue read, make a circulating buffer to store video etc.
-A