pov_globe
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pov_globe [2017/04/29 21:13] 99.187.159.166 |
pov_globe [2017/08/29 15:20] 66.190.155.97 |
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| The first major change was the decision that 8 inches in diameter and 40 LEDs just wasn't going to cut it. I resisted the pressure to make it large enough for a person to ride inside of it and settled on a roughly 16" diameter and 74 LEDs. | The first major change was the decision that 8 inches in diameter and 40 LEDs just wasn't going to cut it. I resisted the pressure to make it large enough for a person to ride inside of it and settled on a roughly 16" diameter and 74 LEDs. | ||
| - | I cut a circular template on the CNC router and tried bending a piece of aluminum around this to create the circular frame, but I was unable to get anything satisfactorily close to a circle (and I wasn;t just being picky - it was pretty bad). At that point (and why it took so long I can't say) it occurred to me that I could 3D print a near-perfect circle, and the lighter material would also be safer and easier on the motor. The print bed isn't large enough for a 16" diameter circle, but it was easy to design it in Fusion 360 to be in 4 sections with connectors holding the sections together. | + | I cut a circular template on the CNC router and tried bending a piece of aluminum around this to create the circular frame, but I was unable to get anything satisfactorily close to a circle (and I wasn't just being picky - it was pretty bad). At that point (and why it took so long I can't say) it occurred to me that I could 3D print a near-perfect circle, and the lighter material would also be safer and easier on the motor. The print bed isn't large enough for a 16" diameter circle, but it was easy to design it in Fusion 360 to be in 4 sections with connectors holding the sections together. |
| I used an LED strip (neopixels are apparently not fast enough for a good POV display, so I used DotStar) instead of individual RGB leds and just glued it to the frame with contact cement. | I used an LED strip (neopixels are apparently not fast enough for a good POV display, so I used DotStar) instead of individual RGB leds and just glued it to the frame with contact cement. | ||
pov_globe.txt ยท Last modified: 2018/01/10 12:40 by 66.190.155.97
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