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    Battery Voltage Dilemma!

    I've decided i'm going to make a UPS for my pc, however ditching the need for a PSU in a blackout.. (eg power it directly by battery and the desktop psu becomes the power supply and charger) My idea was to buy a car mini atx however it requires 12v max (a car's alternator / 13.8v) looks like it...
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    Most efficient 1v boost circuit.

    I've been simulating a few 1v boost circuits out of boredom, looking for the most energy efficient circuit(s) And all of them, this one (attached) image seems to be the winner for a realitively low number of components, i built this circuit last night and 12 hours later it's still just as bright!
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    Battery Chemistry

    Indide a dry battery / heavy duty battery, we have the shell casing to act as the negative, and the "rod" inside is the positive... Excuse my ignorance but... a carbon rod, is that not the same as a ferrite rod? I can pull out of an old radio? I've been making batteries tried copper/zinc/other...
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    New addition to the family :p:p

    Their parents had laid 7 eggs and about 5 days before due, they abandoned them leaving them to die, so i moved the eggs into another pair of finches cage, thankfully they took to them... 4 hatch, a day passes 2 days pass 2 chics die! I begin feeding them by hand for 2 weeks :/ finally they...
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    My final Electricity Generator Idea?

    Take 1 huge capsual metal 2 story house size, attach a chain to it from above or below or both (under or directly over it) the chain pulls on a high gear ratio but with a lot of torque then drop this metal capsual into the sea... that way the depth can be calculated My artistic skills are that...
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    Electronics Point:1 Chat Room Open!

    Yahoo Chat Replacement! https://app.box.com/s/0ygpdp00xs8jhwn0t3l0at7vp2lsfcff (Quick Steps, go to step 1 below and download the binary, 2. extract/copy/unzip to c:\sparta chat\ 3. run it, put in the ip 207.255.16.91 by adding the server. 3. put in a fake password and username, it does not...
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    Craig's Battery Saver (not root!) Android

    I've spent the last few months developing and not spent much time here for that reason, anyway after a lot of demand i've ported the root battery saver to the regular user without root! Still testing it, so any bugs please report asap and i'll fix it right away, thanks! This app saves your...
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    History of Electricity YT

    Well worth a watch, without a lyden jar you'd not be seeing this post now let alone youtube :)
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    It's 1890!

    You're about to be thrown to 1890, you're able to take 2 things back with you to that year, but you better make it good as you'll be stuck there lol What 2 items have you taken? :D
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    testing electrical equipment

    I was watching fake Britain showing off those cheap chinese hover boards and the segment was on lithium batteries.. Taking not too much notice until i heard the word test and power supply, anyway he connected a machine generating 3 - 5k volts and then fed it into the 240ac input... the machine...
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    PCI breakout?

    Anyone seen a pci breakout board? I have a sound card which works fine except for 1 channel i thought a breakout board and power it up then probe for the dead ic(s) then replace the chip... I could not find anything so i bought the adapter, but a break out would be nice so i don't have to work...
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    Voltage Converter or Not?

    http://cyntech.co.uk/downloads/neoway-m590-hardware-design-manual-v1.pdf The m590 says it's not 5v tolerant 3.9v max or there abouts... but if i run an Arduino and tjis m590 module from a single 18650 it will see around 3.8 - 4.0v It came in kit form so i'm going to solder or heat gun it...
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    Making prison safer...

    Computer controlled prison neck thingy, a waterproof sealed unit that goes around the neck of every prison inmate with a small LED to indicate it needs charging (solid means do it, flashing means you in big trouble if you don't charge) maybe the prison inmate can sit in a chair and inductively...
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    Batteries in series

    Is it possible to charge 1 cell at a time with hook up wire to a dedicated ICs charging each cell independently... So 2 rows of 4v lithiums = 10v (A laptop battery) But powering a device requiring 10v in series? (I'm wondering how a laptop battery is charged? Two 10v chargers? Or individual...
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    Winter down under time

    I thought i'd create an emergency light using a candle 2 heatsinks and a sandwiched thermoelectic plate a peltier device.. I got thinking with a fan attached to the peltier connected to the cold side, the fan would help cool the cool side making the fan spin faster? I'm wondering what kind of...
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    Do NOT do ANY of this! Safety first lol

    Basically everything he's doing here is dangerous and could kill you very easily, let's call him a walking educational class on everything NOT to do! Enjoy hahaha
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    Electronic Inks!

    Website sells these low resistive pens along with resistive pens, looks pretty neat eg building circuits on the bus/plane/train or just prototyping stuff quickly The pens are a little on the expensive side though around $13 - $20 range but looks like a lot of fun!
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    Clipboard UDP share!

    Craig's UDP Clipboard Share! (If you only have windows i can upload just the client to share url/text between say desktop and laptop) Turn your Android Clipboards into one! share between android devices and now Windows (between pc/desktop/android seamless intergration) Copy a url from your...
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    DIY buck converter (& Sexy Scope)

    I was wondering the best way to deal with the feedback voltage, he used a voltage divider... Anyway, check out that scope :O
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    ElectronicsPoint Facebook Group!

    Whoever owns/hosts/runs this site, any chance of starting up a facebook group? If not i can... I think it would be handy for the times this forum has issues/downtime/upgrades etc.. Thoughts?......
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