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1  Using Arduino / General Electronics / Re: 4 ohm speaker on 16 ohm system on: April 01, 2014, 05:38:50 pm
Thanks all.
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Where in the heck did you find a 16 Ohm amplifier???
A family member upgraded their sound-system and gave me the old one (and yes, Old one). 
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What's the application, and what's the wattage rating on the amp?
Just a simple sound system. Not sure what the output is though (other than 16 ohm).
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Best not to overload the output stage - something like 10 ohms in series will
protect the amp from over-current, but you'll waste most of the output power.
Okay. As above stated, it is an old used one, so any sound, however low, is better than nothing.

Thanks

2  Using Arduino / General Electronics / 4 ohm speaker on 16 ohm system on: April 01, 2014, 09:03:16 am
Hello all,
I want to connect a 4 ohm car speaker to a 16 ohm amplifier. Could I just connect a 12 ohm resistor in series and deal with the reduced sound, or is there a better way?
thanks,
Jaredpi
3  General Category / General Discussion / Re: Is HTML and Javascript cetification worth it? on: February 26, 2013, 07:48:20 pm
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Depends on where the certification is from.
pretty much the only one I have found that is affordable is from NCSA
Good idea for the portfolio smiley
4  General Category / General Discussion / Is HTML and Javascript cetification worth it? on: February 20, 2013, 01:44:23 am
Hello all,
I wasn't sure were to put this so I put it here. Is it worth it for job/college applications to get certified in HTML and/or Javascript?
If so, from where?
thanks,
jared 
5  Using Arduino / General Electronics / Re: I want (More than 100% effcient) some LED's! on: December 29, 2012, 10:56:37 pm
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What would you do with one.
Produces 69 picowatts of light.
Not much you can do with that, let alone see that it was on.
Because of this possibility smiley:
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Going by the date, it's an old article, there has to be some news about their latest developments...
6  Using Arduino / General Electronics / Re: lantern battery output on: December 29, 2012, 09:51:29 pm
Thanks, that is exactly what I need smiley!
7  Using Arduino / General Electronics / Re: lantern battery output on: December 29, 2012, 08:27:48 pm
Thanks.
As for goggleing it, I'm not sure what to look for (the label got torn off a while back). All I know is that its from the company Eveready.

8  Using Arduino / General Electronics / lantern battery output on: December 29, 2012, 07:38:58 pm
Hi,
What is the most amperage a standard 6v lantern battery can output at any given time?
thanks,
Jared
9  General Category / General Discussion / Re: Where to begin and what is what? on: December 29, 2012, 06:42:22 pm
Just look on the website:
For reference: http://arduino.cc/en/Reference/HomePage
For tutorials: http://arduino.cc/en/Tutorial/HomePage

Also this (http://playground.arduino.cc/uploads/Main/arduino_notebook_v1-1.pdf) notebook really helped me when I started Arduino.

Oh yes, and as SirNickity said, Arduino is an addiction smiley.
Good luck,
Jared
10  Using Arduino / General Electronics / Re: I want (More than 100% effcient) some LED's! on: December 29, 2012, 06:20:37 pm
Wow! Does anyone know if, when, or where you can get these?
11  Community / Website and Forum / Re: New forum for mechanics on: December 27, 2012, 07:02:59 pm
Sounds like a good idea, I agree, but the " Motors, Mechanics, and Power" section sort of covers that.
12  Using Arduino / Project Guidance / Re: 3 motors on an arduino????? on: November 26, 2012, 09:28:44 pm
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Can i make my own bridge.
Yeah,http://library.solarbotics.net/circuits/driver_4varHbridge.html
in the link, use four high current transistors or a bunch of smaller ones attached in parallel. Also, instead of connecting the input to a 7414 ic, just attach it to the arduino.
 
Or if you have unlimited funds you could get a few of these: http://www.ifirobotics.com/victor-883-speed-controller-robots.shtml smiley-cool
13  Using Arduino / General Electronics / Re: Cadsolf Eagle PCB solfware on: November 21, 2012, 09:48:43 pm
I have the freeware version and it works well. Haven't had any problems so far. However, it does take a while to get use to it (it took me a few hours trying random things to get use to it).
14  Using Arduino / Motors, Mechanics, and Power / Re: Connect 4 x 12v dc motors on: November 05, 2012, 07:18:50 pm
1)yes, with a motor driver
2)Something that allows you to control a motor (this may work: http://www.vexrobotics.com/276-2193.html)
3)With #2 yes, but you can do more with a bunch of h-bridges(eg.http://www.ecelab.com/circuit-motor-control-2.htm)
15  Using Arduino / Motors, Mechanics, and Power / Re: safe way to attach coin vibration motor to arduino on: October 31, 2012, 08:00:41 pm
use an H-bridge (http://library.solarbotics.net/circuits/driver_4varHbridge.html)
in the picture, attach input a and b to arduino pins.
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