Use straps, belts or tape to hold the arduino (be extreamly careful). Organize cables and other loose parts that might fly when the motor is on. Upload the code to the arduino (Code is attached at the end) Test where is the best place to set the magnet, it depends of your hall sensor configuration.Īfter the magnet and the hall sensor are glued and working (test it with the arduino, PIN 3), connect the arduino to the 9V battery, and put it on top of the arduino (I recommend to covert it with black tape). The illusion has also been described as 'retinal persistence', 'persistence of impressions', simply 'persistence' and other variations. BE careful with the polarity of the sensor. Persistence of vision traditionally refers to the optical illusion that occurs when visual perception of an object does not cease for some time after the rays of light proceeding from it have ceased to enter the eye. After that glue the Hall effect sensor on back side of the biggest arch, facing the motor. In the code PIN 11 is DATA and PIN 13 is CLOCK. Once the Strip is glued, it's time to make connection. Connect cables to each side according to the strip indications, and then Glue the strip to each side with the silicone gun. After that cut the LED strip in two pieces: 22 LEDs and 11 LEDs. Then take (1) and fit it into the motor's rotor. Remember to previously connect the 120AC to 12VDC converter, in order to operate the motor. One display (the biggest) has 80mm of radio and the other has 120mm.Īfter printing, take the motor at fit it into (2), it's very important to guarantee and stable motor, use sand paper in case that the motor doesn't fit. You can use (1) with two LED strips at the same time, so basically you have 2 displays to play with. Extras:Cables, silicone gun, soldering iron, cutter, tape, belts, etc.There are many ways to make it according to your expertise in electronics, but I'm going to explain this V1 which has the intend to be the easiest version. But I’ll cross that bridge when I get around to working on this again.Here we have a Full 3D Printed Persistence of vision 360 LED Globe Display. California State Capitol Moonlight Custom Square W Square Wall Clock. The simplest way is probably to specify the directions for each wand individually, but that’s fairly labor intensive for a single 3D image, let alone an animation’s worth. Personalized CALIFORNIA STATE Stay True Wild Bear Round Clock. I think the biggest hurdle will be figuring out how to direct the microcontroller to create the 3D images. My hope is to increase the resolution (more wands and more, smaller, LEDs) enough to run a little 3D animation on it. This’ll be a project I’ll work on again eventually. Unfortunately, I didn’t have a chance to proceed any further on this project and was left with only some CAD files. The final design could create a 120 pixel 360° image. The reduced rotational speed there would have a negative impact on the POV illusion and the wands were small (so they wouldn’t block the view of other wands), reducing space for additional wiring. LEDs weren’t placed close to the center of the wands for two reasons. The wands were offset a few degrees to make assembly easier, but were counterweighted to reduce vibration. The plan was to use (10) 5mm LEDs per wand and stack 12 wands, resulting in 12 x 20 x 360° resolution - enough to create simple images. I also reoriented the axis to be vertical. Adding more wands stacks the 2D images, creating a low definition 3D display. Rather than oscillating a wand, I’d spin it 360°. My idea was to take that design one step further and create a 3D display. During it’s sweep, the wand’s LEDs turned on and off rapidly to create a “solid”image: the current time. The wand had a set of LEDs built into it and the base oscillated the wand back and forth. This phenomenon was exploited in the creation of 2-dimensional clocks comprised of a base and wand. Similarly, if I have a light that’s continuously on and move it quickly, it will appear as though there is a line of light, even though there is only a point light source. If I turn a stationary light on and off at a high enough frequency, it will appear to the unaided eye as simply on. Persistence of vision in DIY Electronics is Used To Create Beautiful Animated Texts, 3D Objects, Basic Line Drawings, Clock With Simple LEDs. Essentially, our eyes continue to perceive light for a short duration even after that light is no longer being emitted from that location. The fundamental concept this was based on was something known as persistence of vision. The concept was to expand on the persistence-of-vision clocks I used to see around a lot and use the same idea but for a 3D display. I love working with CAD programs and thought this would be a cool idea.
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