Recent content by evanado

HAH! No, I wasn't speculating on the idea that we'd convert the world to 12v, I was speculating the idea that someday, we might not have 230v, or 120v, or high voltage, at all! Well, maybe you will, but someday, I want to be off the grid! I would someday like to use so little electricity...

Yep---Thats pretty much it, although, you still can't charge it FROM the car battery. It too, has an 15v ac adapter. I think the bottom line here seems to be, you can't do it. Or at least, you shouldn't do it. What I am trying to build would be the exact opposite of this unit, where...

6V? Then you'd have to bump it back up again to have a voltage that's useful. (Lights, charging systems are all 12v) Hard to believe this isn't a thing... When the entire world is on 12v, it will be thing!

Stupid question. I have a seemingly stupid question to ask----Do I need diodes between the battery and these modules? In other words, wouldn't the current from the battery fry the modules ? Stupid question, I know. I think I'm more looking for 'What kind of diode" do I need to prevent...

Something that does this is exactly what I'm trying to build. I can't find enough info on this thing, like, how many ma does it kick out? Does it float when it's charged? Seems like a cool toy, but I wouldn't trust it, and certainly don't want to put another 20$ part into the overhead of my...

Thank you all! Wow, thank you all so much for the help! Unfortunately, I think I'm even more confounded than I was before. So, what you're saying is that this unit --- http://dx.com/p/power-led-driver-constant-current-charger-power-supply-module-cc-cv-156788#.UrnVjPRDtq0 ---Will not work...

alas I *think* I've solved mine, and the OP's problem. http://dx.com/p/power-led-driver-constant-current-charger-power-supply-module-cc-cv-156788#.UrnVjPRDtq0 I can't really figure out why this wouldn't work to do everything.. This wouldn't be a 'trickle' charging solution. This...

Here are a couple pictures of the 'art' that I've been building. https://scontent-b-sea.xx.fbcdn.net/hphotos-ash4/1526500_10201287385611319_408907924_n.jpg https://scontent-a-sea.xx.fbcdn.net/hphotos-prn2/q72/s720x720/1471923_10201287546695346_1176124242_n.jpg...

I've come across this thread because I have a very similar request. Id like to be able to charge very small 12v SLA batteries using the 12v lighter port in my car. The only issue I see with the LM317 as you say, is that it doesn't seem to regulate amperage, and the control pot would be...