Tell us about yourself!
Thank you sir! :) The mechanism to reset it is called a de-coherer and usually it was a solenoid. A vibration motor will do just as fine I think!
Hi Sven, it's the multimeter's buzzer. After the spark the coherer is conductive and the multimeter's buzzer goes off.
Thanks! :) What do you mean with "modulator"?
you're welcome! :)
great! post your images of you do! :)
Hi James, the coherer is indeed a (cumbersome) latching switch. The dimensions could be lowered depending on the solution adopted. Anyway to get a reliable device you should experiment with filings size, wires distance at least. Other parameters influencing the behaviour are the filings composition (e.g. iron, zinc, copper or mixtures) and the use of a glass tube under vacuum for example...
Thanks for the tip!
Thanks Alex. I'm glad you like it! :)
3D Printed CohererView Instructable »
Thanks for the insight!
Thanks brianchadorourke! :) Share it if you do!
I'm afraid I can't help... :)
Hi almateus, the new version is more suitable to be used with a USB microscope. The scintillations are brighter using the scotch tape screen, but I don't know if a normal webcam is sensitive enough. Putting the scotch tape directly in contact with the CCD (powder side facing outwards) should do the job though...
Thanks for your comment! I added a "legal bit" section as well.
Thanks! :) Well... as long as the source is not ingested or touched with bare hands it should be pretty safe. But the better people to ask for info and authorization should be school's health and safety representatives. Every country has is own laws...
Pocket Size SpinthariscopeView Instructable »
Thanks indoorgeek! :)
Hi SteveM245, I would say not more than 10 USD if you make it at home... (servo excluded)
Hi Pedro, I'm afraid I don't have the eagle files anymore. But you can use the PDF files to make your own one, just remember to print them without scaling (1:1 I mean). Get them here:https://cdn.instructables.com/ORIG/FPN/6MDB/JMYWTA4Z/FPN6MDBJMYWTA4Z.zip
Thanks gm280! It's quite an old-school project indeed :)
Thanks! I hope so... You don't always need Arduino or Raspberry PI to have fun... :)
556 Servo DriverView Instructable »
Thanks! :) Smoke rings? Intersting! How would you implement it?
Not yet, but it's a nice idea!
Thanks! :) Well... the cup doesn't need to be collapsible, I used it in order to get a pocket sized device. You can use a marble, but I wouldn't feel confident in using anything hard (if the balloon rips the marble could be ejected).
Thank you seamaster! :) An opinion from an expert then!
At 2 meters you can feel it quite well!
Pocket Sized Vortex CannonView Instructable »
Not the Usual Lasagna
Controlling Lights With Your Eyes
Thank you the_3d6! :) Thank you for the link, it's a very in deep analysis.
Thank you the_3d6! :) And thanks for the link, it's a very in deep analysis.
Thank you Swansong! Just add water they used to say... (?) :)
The Hunt for Mini OctoberView Instructable »
Wooden Gear Trains
Sphere-o-bot: a Friendly Art Robot
Easter Dove Bread
Thank you watchmeflyy! ^^
The Impossible LEDView Instructable »
I'm glad you like it! ^^
Thank you Josehf! :)
Thank you Anirudh! You're too kind... :)
Hi Garvit... thank you! :) Well I can't tell three... but the one I really like is the tractor beam!
Spheremin what?View Instructable »
Thank you RGBFreak!
Thank you tomatoskins! :) I was thinking about the ubiquitous money-eater machines you can find at the pub or similar places. A lot of people waste money on them, without the chance go know anything about the software behind. This is pure randomness instead...
Twitter enabled automatic d...View Instructable »