Some images testing light painting/POV on the light staff (this is prototype 3 with a carbon fiber core).
The text can be changed from my phone, and is visible with the naked eye when the staff is being spun (these are ~0.5 second exposures).
Very nice!! What LEDs are you using? Any tips to share?
APA102 (critical for their high PWM rate). I found that <100fps and the text started to stretch out. For something even more detailed you’ll want an even higher frame rate.
I used a gyroscope to ensure that regardless of the spin speed the image stays consistent.
Oh interesting. How was it using the gyro? What kind are you using?
I’m using an LSM9DS0. By measuring the rotational speed of the staff (over two axes) I know how quickly to advance/scan through the text. This way spinning at 300 degrees-per-second produces the same image as 600 dps.
I’m planning on using the same process for displaying static images. Using a ground reference (from the accelerometers) I should even be able to display images upright.
Looks great already; thanks for sharing the pictures and the tech info too.
Cool. This is on my list to do as well with my batons. Care to share your code @Gabriel_Schine ?
@Ashley_M_Kirchner_No at some point I’m going to make it private on Github. I can add you to it. I’m considering selling these so until I make up my mind the code will stay private. It’s already ~2500 lines of code.
If you don’t mind adding me, I’d appreciate that.
Really impresive work, i would love to see the codding too! Thanks Gabriel
For sure I would like to see this magic code as well.
Let me know if you want any help!
Looks amazing!!! Just got my apa102’s and teensy in, can’t wait to start working on a similar project
What kind of power supply did you use for that staff? I have a similar project which will use around 200 LED’s and with a max current draw of 60mA per LED I could need up to a 12A supply by the sounds of things. And as I’m trying to keep the size and weight down I’m not sure how I’m going to do this.
Realistically you will need to support 4A. I’m using five Panasonic 3400mah 18650 cells in parallel.