Avi Kazen
27
I'm a maker in Madison, WI, originally from Tucson, AZ.

Achievements

10K+ Views Earned a bronze medal
Contest Winner First Prize in the Clay Contest 2016
Contest Winner Runner Up in the LED Contest
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• AviKado commented on ultrauber's forum topic Acoustic Levitation?1 week ago

I'd like to just clarify a few things I've read here. Firstly, the diagrams that seem to illustrate a "figure 8" with the particle in the loop assumes you already have a notion of how sound actually works. Sound doesn't truly travel through air as a vibration travels down a string (with an "S" shape), like these diagrams illustrate. Sound is a longitudinal wave. It is a compression of air travelling away from the speaker. The sin wave diagrams that you see all the time describing sound traveling through space just illustrate at what distance from the source you'd find high pressure and low pressure (curved) planes. So in the diagram, when it shows the particle suspended in a loop, this really means the particle is suspended in a low pressure plane sandwiched between ...see more »I'd like to just clarify a few things I've read here. Firstly, the diagrams that seem to illustrate a "figure 8" with the particle in the loop assumes you already have a notion of how sound actually works. Sound doesn't truly travel through air as a vibration travels down a string (with an "S" shape), like these diagrams illustrate. Sound is a longitudinal wave. It is a compression of air travelling away from the speaker. The sin wave diagrams that you see all the time describing sound traveling through space just illustrate at what distance from the source you'd find high pressure and low pressure (curved) planes. So in the diagram, when it shows the particle suspended in a loop, this really means the particle is suspended in a low pressure plane sandwiched between two planes of higher pressure. Naturally, things like to be pushed away from higher pressure towards lower pressure. Thus levitation.Another point, it has been mentioned multiple times that the wave needs to be quite strong to produce significant levitation, bit that doesn't necessarily mean you need a huge amplifier and specially made speakers. If you generate a standing wave, by definition, you are achieving resonance. At resonance, a wave can be greatly amplified. This would lower the actual amount of power you need to be pumping into the air. I haven't looked into the details here, so maybe these figures already took that into account, but given that someone mentioned they were able to do it with their voice, i don't think you need 150 DBs for a small object. Furthermore, the object geometry should come into play. If you had a very light object with a relatively large surface area perpendicular to the wave (a small piece of paper) i would imagine that you wouldn't need as much pressure.Also, this guy seems to have done it with a small device:https://www.instructables.com/id/Acoustic-Tractor-Beam/

• AviKado's entry Glowing LED Mushroom Log Lamp is a winner in the LED Contest contest 3 months ago
Winner!
• AviKado's entry Solar Powered, Bike Frame Pottery Wheel is a winner in the Clay Contest 2016 contest 3 months ago
Winner!
• AviKado's entry Solar Powered, Bike Frame Pottery Wheel is a finalist in the Clay Contest 2016 contest 4 months ago
Finalist
• AviKado's entry Glowing LED Mushroom Log Lamp is a finalist in the LED Contest contest 4 months ago
Finalist
• AviKado commented on AviKado's instructable Glowing LED Mushroom Log Lamp4 months ago

If you are very new to electronics/programming, I would suggest skipping the microcontroller and bluetooth altogether and go with a simpler model using either a single color LED or a color changing LED. All that would take is a single resistor (about 200ohms) in line with the LED, powered from a low voltage power supply (5volts). Just google simple LED circuits.Actually, since you are doing this outside, might i suggest you make it solar powered? You could buy a little solar light and hack it to light up your mushrooms instead.And would you look at that. While searching for an instructable on solar lights to link you to, i found this. Exactly this project but solar! I cant believe someone else had a project so similar to this!

• AviKado commented on AviKado's instructable Glowing LED Mushroom Log Lamp4 months ago

That sounds like an awesome idea! Ya, the silicone mold technique is super handy. I can't take credit for that one.Your idea reminds me of when i interned at this really cool company called Ecovative that makes materials out of mushroom mycelium. While i was there they were building a tiny house to prove a new tech they were developing, using their material as wall insulation. As a result, there were literally mushrooms growing out of the walls.

• AviKado entered Glowing LED Mushroom Log Lamp in the LED Contest contest 4 months ago
• AviKado commented on KennethS39's instructable Hot Water Heater for My Greenhouse4 months ago