0

October 17, 2016 AT 1:00 am

Hologram Visualization – Pixel Globe #ArduinoMonday

Hologram visualization Hackster io

Incredible POV project from Gokul Shrinivas on hackster.io:

Persistence of vision (or POV) is the phenomenon by which the eye, seeing a rapidly moving objects, stitches together the object’s position at different times into a single cohesive image. This phenomenon is leveraged by CRT displays, which use raster scanning to draw individual pixels in each horizontal scanline before returning to the beginning of the next one. In contrast, our spherical display displays scanlines vertically. We have built a spherical display that creates a picture by rapidly alternating the colors displayed by each of a column of LED pixels. Each column of vertical pixels displays simultaneously. The physical location of the light source is then moved by a short distance before the subsequent vertical scanline is displayed.

Our system consisted of a 60-pixel LED strip mounted on an acrylic ring, which was lined with a 60-pixel LED strip running an array of LED pixels. Its bottom is mounted to a 6V DC motor with an encoder which uses a Hall-effect sensor to accurately determine its position. The motor’s rotational velocity is set to 500 rpm. A 6-wire slip ring from Adafruit allowed us to connect the LED power, clock, and data lines from a stationary frame to the rotating acrylic ring. (Since 6 wires are available, 2 wires each are used for power and ground lines.)

Read more


50-06Each Monday is ArduinoMonday here at Adafruit! Be sure to check out our posts, tutorials and new Arduino related products. Adafruit manufactures the Arduino right here in the United States in cooperation with arduino.cc. We have a huge selection of Arduino accessories and all the code and tutorials to get you up and running in no time!


Check out all the Circuit Playground Episodes! Our new kid’s show and subscribe!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground”Adafruit’s Apps!


Maker Business — SoftBank Invests $300 Million in WeWork

Wearables — Impatience reward

Electronics — Cool your FETs!

Biohacking — What I Learned from VO2 Testing in Ketosis

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.