Question by mestes66 | last reply
I've just purchased 100 leds for ten pounds. Woo. Just about to heat up my soldering iron, and BUGGER. I realised that instead of buying 100 ultra bright white leds, I've bought 100 ultra bright U.V. leds. (No wonder they were so bloody cheap!) I need ideas for a project. I suppose I could just make a big assed black light and rave the night away while getting a healthy dose of arc eye, but where's the fun in that...?
Question by roadieflip | last reply
How do I determine what voltage and amp rating my RF line filter should be? I'm building a modest Tesla coil, powered by an automobile ignition coil and must buy an RF line filter for my house mains, but there are so many differently rated filters for sale. I suspect that I can get by with a 120 volt, 10 amp rated filter for my U.S. house current, but all the ones online are rated for 240 volts. Can I still use 240v, and what amp rating?
Question by sawyer57 | last reply
I was shocked by the postage prices for Ponoko ($80 minimum on a $7 part) is there anywhere in the UK that will let you print one off items with small minimum orders. Or any way I can get something printed and keep the cost under £20?
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How do u make collections on instructables
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Question by Mick_vernon | last reply
Theres been a bug going on in minecraft that is hard to fix.its a bug that,when you fly to much in creative, it glitches up and when you try to exit it keeps the cursor inside the box. its happened to me twice and when it does, you cant go to any other websites or anything. you cant type in anything and if you sign out of gmail (or any other mail site) it wont let you back on unless you type both the username and password. thanks for helping. nfk11
Question by nfk11 | last reply
We have a problem with kids coming into our garden, vandalising our plants, breaking into our shed etc. we have decided that installing a cctv system in our home is a good idea as even if it doesn't stop them coming in, it will be solid evidence to take to their parents. problem is, we have regular power cuts and i would like the cctv to be recording 24/7/365 (especially in the shed because that is where our bikes get stored) i have two 12v 7ah SLA batteries that i am donating to the project, iknow that they need 13.8v and around 500ma to charge. i need 16 camera outputs, and then a couple of spare outputs for aux devices (router to keep it connected to the internet, mics, infra red lamps etc) the dvr its self wants 12v 5 amps input so i think for that i will make another psu just for that with maybe 2 or 3 12v 7ah sla batteries. i have baisic electronics knowledge, have access to pcb printing facilities and can use eagle. any help at all would be amazing, the main things i need to know is: how to get 13.8v from 240v ac, how to power all the cameras from 240v ac and have a smooth switchover from mains to battery. thanks in advance - luke
Question by ljarrald1 | last reply
HI...I WANNA TO KNOW HOW TO MAKE A SPYWARE....PLS SENT IT TO ME AT firstname.lastname@example.org.....
1stly i went to purchase the IC MT8870 for dtmf decoder..he gav me dis cs9370DGP nd said disz is new one nd it works like MT8870..bt i got a doubt whether it works vth the circuit built using MT8870..plz kindly gimme some suggestions.. if possibl plz provide me the circuit for mobil control robot using cs9370DGP.. Plzzzzzzzzzzz:(
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Question by dawnmt | last reply
I like to disassemble them. i then try to make stuff outta wats left. i also like to look at da circuit boards. i guess i'm wierd that way. seriously. i'm kind of a freak when it comes to stuff like lightnin', electonics, and just about anything that uses electicity. i will post another topic about whyy i like electronics so much.
Topic by the_TRUE_LINK_OWNZ!
How is a neutron shoot into the fuel rod of a fission reactor.
Question by The Red Button | last reply