This magnet (seen at 3:15) is crazy. A smaller version is demonstrated at 6:30, they are dropping an aluminum tube through the magnetic field demonstrating Lenz’s Law, we saw Lenz’s Law in action here but the results are a bit more impressive with a super huge magnet!
Sean wrote: Hi all, I went to Maker Faire in NYC last month and put together a video of the people I met (including Kelvin Doe, who is at the end of the video). There’s some pretty amazing stuff, though it is mostly overview and not so much a step-by-step guide on how to create specific devices. Anyway, I hope you check it out, and I hope you like
 Kelvin Doe who is also known as DJ Focus is a 15-Year-Old living in Sierra Leone. His community is not developed, for example the power only works one day a week. He has built an ton of electronic projects, the incredible thing is that since there is no Radio Shack handy he has to find his parts in trash cans. He also takes things apart to see how
What is the voltage on a AA battery? It would be around 1:30PM if you were using this voltmeter! A PICAXE 18M2 microcontroller is used to read an analog value, calculate what time it represents and then uses a stepper motor to spin the adjustment knob to have the clock show the voltage using the hour and minute hands. 🙂 Read more about the Analog Clock Voltmeter “The max
If you are thinking that this transformer is quite beefy you would be right. Youtube user Photonvids has designed it to be connected to 220V and it has an open circuit secondary voltage of around 4 volts. This means you can safely touch it with your fingers but I would step back if someone was planning to short it out with a crowbar. I guess that might be a
We have seen some pulse jet builds before but this Pulse Jet Kettle has to be once of the funniest builds I have ever seen. You can see the kettle in operation at the 3:20 mark of the first video. It has an added bonus of waking up everyone in the house to get ready to have a cup of tea. Via: Hackaday
I enjoy fishing and try to get out at least 2 or 3 times a year. Sometimes the fish are biting like crazy but other times they are just not very active. I think with a Underwater Exploration Vehicle like the Nøkken 3 ROV the fishing experience would be totally changed. I can imagine scouting the bottom of the river looking for the best spot and it would be
