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16  Using Arduino / Motors, Mechanics, and Power / controlling two transistors with same port on: February 12, 2013, 05:37:48 am
I want to know if it is possible to control 2 transistors using the same output port.
I want to use this to make an h-brindge, using just 2 output ports.

(the transistor that I will use is TIP122  )
 
17  Using Arduino / General Electronics / Re: Speed control of a 24V with Arduino on: February 08, 2013, 04:45:16 am
you say you are not an electronics expert;
but you are going to remain there if you do not experiment . its acuallty pretty easy to understand .
all you need to know is the working of a transistor, and a dpdt relay.
18  Using Arduino / General Electronics / Re: hacking into a spy camera on: February 07, 2013, 12:31:49 pm
just 'forget it'?

there is absolutely NO way i can use the tiny lens to stream to audio vieo?
19  Using Arduino / General Electronics / Re: Speed control of a 24V with Arduino on: February 07, 2013, 12:25:48 pm
ya, use a mosfet. it will allow you to speed control in any ONE direction.
if you want to go in both directions, use a DPDT relay.

http://www.instructables.com/id/Super-Easy-Reversible-Motor-Control-for-Arduino-/?ALLSTEPS
in this , they have used a TIP 122, u can use this or even a mosfet.
20  Using Arduino / General Electronics / hacking into a spy camera on: February 07, 2013, 12:22:14 pm
i had purchased a small cheap spy camera.
its pretty small(around the size of one's thumb ).
whenever i press the rec button, it records the video & audio, and store it in an onboard memory card.

after opening up the camera:
i can see a black and red wire coming from the lens,which is probably the wire.
and many other wires,(around 10) coming from the lens, which is probably going to interface with the card .  

now, how do  i connect the camera, such that it transmits the video to my tv (audio video cable).

21  Using Arduino / Audio / Re: simple sound detection(something like a clap of a whistle) on: February 04, 2013, 09:24:26 am
but what logic to use to distinguish between sounds?
22  Using Arduino / Audio / Re: amplifying mic signals in an arduino on: February 03, 2013, 01:18:56 am
please show me the breadboard view of the schematic with the ca3140 .
also, wont a simple transistor work?
23  Using Arduino / Audio / amplifying mic signals in an arduino on: February 02, 2013, 10:23:10 pm
i researched google quite a bit to get something to amplify the signals of a mic.
i have been thinking, what is the problem of using an op amp?
wont that work?
24  Using Arduino / Audio / Re: simple sound detection(something like a clap of a whistle) on: February 02, 2013, 09:55:18 am
but wont i have to be whistling REALLY hard to get this working?
25  Using Arduino / Audio / simple sound detection(something like a clap of a whistle) on: February 02, 2013, 09:37:42 am
hi,

i am trying to program a car, that will stop if i whisle to it.


is it possible to detect a whistle without using something complex like bitvoicer or easy VR?

something like understanding what a whistle wave looks like, and then comparing?

the input will obviously be thorugh an ordinary mic.
26  Using Arduino / Motors, Mechanics, and Power / Re: futaba s3003 on: February 01, 2013, 03:50:03 am
that doesnt solve my problems(i had already seen those )

i would rather if someone explained me the solution .link provided dont really help as much as explanations do smiley-razz
27  Using Arduino / Motors, Mechanics, and Power / futaba s3003 on: January 31, 2013, 07:38:20 am
i am trying to get the futaba s3003 to work
it moves all fine , but when i use myservo.write, it starts moving about a point for a point, befor coming to a stop.

(something like a pendulum)

what am i doing wrong?
28  Using Arduino / Displays / Re: Will this lcd work? on: January 30, 2013, 09:28:21 am
of course it can smiley-razz

but, is that feesable enough to?
29  Using Arduino / Displays / Will this lcd work? on: January 30, 2013, 06:37:18 am
http://www.ebay.com/itm/0-96-inch-Screen-128x64-OLED-LED-LCD-Display-Module-Blue-Yellow-/160879914739?pt=LH_DefaultDomain_0&hash=item257530aef3
30  Using Arduino / Programming Questions / Re: newPing library clash on: January 28, 2013, 09:49:09 am
the old ping is not accurate

this newPing is pretty cool
i would love it if there was a way to run the newPing library
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