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16  Using Arduino / General Electronics / Re: Ultrasonic distance sensor not working when using batteries as power suply on: May 27, 2014, 01:05:28 pm
What kind of 9V battery is it that has better current delivery than a pack of AA's? Certainly NOT the Brick (a.k.a. transistor radio battery).
17  Using Arduino / General Electronics / Re: LM317 voltage regulator R2 is getting very hot? why? on: May 27, 2014, 12:42:11 pm
E/R= I
I*I*R=P, not I*R*R
18  Using Arduino / General Electronics / Re: How to amplify 3.3v servo signal to 5v, tiny amplifier construction welcome. on: May 27, 2014, 10:52:21 am
Why not just use a N-MOSfet (BSS138, or so) as a low side switch?
19  Using Arduino / General Electronics / Re: "Dangerous Arduino Voltage" ahahaha. on: May 21, 2014, 12:35:16 pm
If you do not like the opto in the circuit, then you have to get a 5 V tollerant Venus Fly Trap plant (very rare, very expensive, better to use the opto for level conversion....)
20  Using Arduino / General Electronics / Re: Meaning of the term 'grounded' and direction of electron flow on: May 20, 2014, 02:06:14 pm
This ain't helping Guptra much, sorry, but it has been fun!
21  Using Arduino / General Electronics / Re: Meaning of the term 'grounded' and direction of electron flow on: May 20, 2014, 02:04:59 pm
Drunken electrons...

That must explain the smoke.
22  Using Arduino / General Electronics / Re: Meaning of the term 'grounded' and direction of electron flow on: May 20, 2014, 09:45:15 am
Then why does the schematic symbol for a semiconductor diode have an arrow?

BTW: current does not flow, technically current is flow.
23  Using Arduino / Project Guidance / Re: accelerometer programming on: May 19, 2014, 01:58:41 pm
I think what he is saying is that Gravity causes the acelerometer to register aceleration and the amplitude is a function of the angle.
(I could be wrong too. I am still trying to understand this)
I still don't get it.  An accelerometer measures delta in enertial energy in x,y,&z. when the difference in enertia reaches zero (there is no more acceleration in that vector), the output for that vector goes to zero.  That measurement is not an indication of how far the chip was moved, but rather, how fast (or hard) it was moved.  So how does one (with any level of accuracy) get degrees (as measured by a protractor), especially when acceleration has dropped to zero.
doesn't make any sense to me.
24  Using Arduino / Project Guidance / Re: accelerometer programming on: May 19, 2014, 01:13:24 pm
Sorry,  meant to say "some degree of difficulty".
25  Using Arduino / Project Guidance / Re: accelerometer programming on: May 19, 2014, 01:11:47 pm
You tilt your accelerometer and it reads a value, you equate that value to degrees of movement because you tilted it a certain number of degrees??? What does it read when you stop tilting and hold it at the same degree offset?? Either I am misinterpretting what you have said (which, I admit, is quite likely), or....

Having some degree of following this. are you sure you're talking about an accellerometer?
26  Using Arduino / General Electronics / Re: Arduino Circuit Diagram on: May 16, 2014, 09:57:01 am
pahsaw!  It is simple to achieve near 100% efficiency with most monolithic  IC regulators by the simple application of the 'Linear Parasitic Shunt' approach: 1) lift the Common (or Adjust on adjustable regulators) pin and leave that terminal floating, 2) apply the Linear Parasitic Shunt ( a short length of 1 gauge solid copper conductor) between the Vin and Vout terminals of the regulator in question, 3) remove the output ripple filter capacitor.  It should be noted that some control of regulation and thermal limit shut-off capabilities will be lost, but this is a small price to pay for the greatly increased efficiency obtained.  Patent pending.......
27  Using Arduino / Project Guidance / Re: Best Microcontroller for Image processing (Crowd Counting) - feasible? on: May 13, 2014, 01:15:15 pm
You don't do efficient image processing with microcontrollers, you use micro processors or processors.
28  Using Arduino / General Electronics / Re: Voltage drop on a capacitor on: May 13, 2014, 11:53:33 am
dlloyd,

If, in fact, "Electricity is really just organized lightning ", and if lightning never strikes the same place twice,,,, why do i keep shocking myself?
29  Using Arduino / Project Guidance / Re: please help with my project since i do not want to fail on: May 13, 2014, 11:33:14 am
And, you didn't say 'inches = duration / 74 /2 ;'

Slow down and do as you are told.  If you want help from these guys, you gotta follow the rules and show that you are willing to help yourself......
30  Using Arduino / Project Guidance / Re: Need help with gyroscope/accelerometer - orientation on: May 13, 2014, 11:24:49 am
Get a copy of the 1) Product Specification 'PS-MPU-6000A.pdf' and 2) Register Mapping and Description 'RM-MPU-6000A.pdf, and a 3) good stiff drink, then settle down for a lot of reading....
everything you need to know.

And/or a copy of Krodal's MPU-6050Test pde and disect it.
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