13 more posts in this thread. [Missing image file: 1358348529688.jpg]
So, my cell phone has a warranty that's about to go. If it beaks with no signs of physical damage and isn't something easily replaceable like a broken battery they'll replace it with minimal inspection. I want to take advantage of this, how can I break my phone? There might be signs of it being tampered with if I open it up and do something, so I'm thinking I could send a large voltage into the USB to Killian but I saw a thread about this a while ago, all of you guys said it'd just kill a part of the mobo. So, could I use a strong alternating electromagnet to induce current in the circuitry and destroy it, yeah? What currents in the magnet would I be looking at? Would it even work?
6 more posts in this thread. [Missing image file: ArduinoUno_R3_Front_450px.jpg]
I'm new here and I want to try my hand at a new robotics project. I've been reading up on Arduino boards, and they sound pretty fun. What I want to do is be able to use a remote control on something and have it find my angle, rotate so it is looking at me, find my distance, and then throw something at me. To throw something I'm going to have it find my distance and then use some physics formulas to pull back a spring and shoot through a cannon type of thing. My main problem is figuring out how to find distance and angle from a remote control. If anyone has any documentation or tutorials, I'd love to read them.
20 more posts in this thread. [Missing image file: linear power supply.png]
I'm making a linear power supply for a college project, and I intend to keep it and use it later, so I wanted to invest some time in it (but not that much money) to make it a little more secure.
It'll be a simple 12V 1A power supply, but the test is to whistand a 5 ohm resistor load at full 1 amp.
You can see I added a fuse and a varistor before the transformer, and I'd like to add a diode
(D1) to protect against reverse voltage, but I skipped that class....how should I do it?