Tuesday, December 9, 2008
Wednesday, November 26, 2008
Top Orthopedic Surgeons Orange County
Thursday, November 20, 2008
Playing P90x On Windows Media Player
quadratic approximation of Sin (x)
For some applications where you need to calculate many sines and cosines per second (games, etc) is very difficult to calculate. So today I bring an approach quadratic midterm. The function is:
y = -0.405282839 * (x) * (x-3.1416)
This speeds up a lot of our applications using trigonometric operations. The problem is you have to remember to treat the negative angle> PI.
code in c + + adaptable to other languages:
double sin (double rad) {
if (rad <0) return -sin(-rad);
if (rad> 2 * 3.1416) return sin (rad% 2 * 3.1416);
if (rad> 3.1416) return - (-0.405282839 * rad * (rad-3.1416)) return
-0.405282839 * rad * (rad-3.1416)}
For some applications where you need to calculate many sines and cosines per second (games, etc) is very difficult to calculate. So today I bring an approach quadratic midterm. The function is:
y = -0.405282839 * (x) * (x-3.1416)
This speeds up a lot of our applications using trigonometric operations. The problem is you have to remember to treat the negative angle> PI.
code in c + + adaptable to other languages:
double sin (double rad) {
if (rad <0) return -sin(-rad);
if (rad> 2 * 3.1416) return sin (rad% 2 * 3.1416);
if (rad> 3.1416) return - (-0.405282839 * rad * (rad-3.1416)) return
-0.405282839 * rad * (rad-3.1416)}
Wednesday, November 19, 2008
How To Save Merino Wool Sweater From Shrinking
Mini Taser (?)
Today I'll show you how to make a mini taser also known as shockeador. It can be used to good ends, for example, supports an integrated test whether x volts or for ill, for example to give a kick to the colo for all the nonsense he says and put it on the bus (ATZEQUIA TOTAL FAIL), you can not .
What we need is:
To address this, we can grab and put two capacitors in series, so that each will be charged to Vpp / 2 -> 311 / 2 = 155 volts, which is considerably less than maximum voltage.
To load we can use this schematic:
After plugging at 0 seconds (R * C is almost zero) each capacitor is charged to 155 Volts. In my case
charged to V * C = 155 * 220 * 10 ^ -6 = 0.0341 C.
If you touch the capacitor against the skin, whereas the average strength of the skin as 10K, the current insurance will be about nothing 155/10K = 15mA and power dissipation by the body than 2.4 W.
This is enough to kill you. Whereas
Taw = 220uF * 10K = 2.2s, the capacitor is discharged after 5 Taw -> 10 seconds. This value is very high and, considering the average response time of the body of 200 ms and the minimum voltage that is felt is about 50Volts, we use about 25 downloads without having to charge the capacitor again.
Today I'll show you how to make a mini taser also known as shockeador. It can be used to good ends, for example, supports an integrated test whether x volts or for ill, for example to give a kick to the colo for all the nonsense he says and put it on the bus (ATZEQUIA TOTAL FAIL), you can not .
What we need is:
- a plug, ie a circular box with one leg and a mechanism with two screws to attach a cable.
- a 1N4004 diode on, has to endure at least 311 volts in reverse.
- A / A 311 volt capacitors that support or read below. Many
- caution and care when handling
To address this, we can grab and put two capacitors in series, so that each will be charged to Vpp / 2 -> 311 / 2 = 155 volts, which is considerably less than maximum voltage.
To load we can use this schematic:
After plugging at 0 seconds (R * C is almost zero) each capacitor is charged to 155 Volts. In my case
charged to V * C = 155 * 220 * 10 ^ -6 = 0.0341 C.
If you touch the capacitor against the skin, whereas the average strength of the skin as 10K, the current insurance will be about nothing 155/10K = 15mA and power dissipation by the body than 2.4 W.
This is enough to kill you. Whereas
Taw = 220uF * 10K = 2.2s, the capacitor is discharged after 5 Taw -> 10 seconds. This value is very high and, considering the average response time of the body of 200 ms and the minimum voltage that is felt is about 50Volts, we use about 25 downloads without having to charge the capacitor again.
Monday, November 17, 2008
Immunizations In Ontario
Proxima Updated
As you know I'm planning to improve the site. Some improvements will be: Change
As you know I'm planning to improve the site. Some improvements will be: Change
- server (no more blogger) to a free (working)
- design change, possibly with some buttons to change style if you do not like the current one.
- Form to participate in the site.
- Better statistics in the style of google analytics
- Ability to upload files, videos and images to the server and not an external one.
- Four new sections:
- News, where everyone can post news of the outside world or personal projects
- pages and blogs, where it will be possible to post links to more than a paragraph of description
- Articles / Tutorials, where everyone can post a fairly long articles, written by himself.
- Tools: Calculator code of resistors, resistor calculator for LED (s), calculating the value of capacitors, etc.
Friday, November 14, 2008
How Do You Get Into A Sorority In Sims 2
Measuring voltage using a tester
To Tavo who looks on TV and says you can not plug a tester to the wall (220V effective).
can see my video in proyectosflasheros.com.ar , by the way we do that google indexing: P
Tavo, please DO NOT delete it. Another
To Tavo who looks on TV and says you can not plug a tester to the wall (220V effective).
can see my video in proyectosflasheros.com.ar , by the way we do that google indexing: P
Tavo, please DO NOT delete it. Another
Sunday, November 9, 2008
Warts And Acne. Difference
Frets on Fire Guitar 2 (Guitar Hero clone for PC) Guitar
how to make buttons for the fingers would be with a series of buttons such as calculators or remote controls. They use a plastic that bends and at the bottom with a conductive material.
can see more about this technology in http://en.wikipedia.org/wiki/Membrane_switch
If you want to make your guitar so you can use this form done in 10 min. in Protel.
can see more about this technology in http://en.wikipedia.org/wiki/Membrane_switch
If you want to make your guitar so you can use this form done in 10 min. in Protel.
Saturday, November 8, 2008
Chelsea Charms In Pink
Frets on Fire (Clone Guitar Hero for PC)
I am designing a kind of joystick with only 8 buttons. The good news is that, unlike many keyboards, you can press any of the 256 combinations and the system continues to record properly pressed.
Is based on a simple connection to port bidirectional parallel port (25 pin behind the pc), from pin 2 to 9.
The program I am developing in c + + for Windows, allows you to translate a push of the buttons on a keyboard key, transparently to the application that is using either a game, or any other.
On the hardware side there are two possibilities, which chose the second to be better in light and 8 do not have big buttons.
1)
Use buttons connected directly to ground and port. For example, the push for bit zero cablearía from leg 2 (entry 0) to 25 (mass). This method works because the house has a parallel port pull-up resistors (no idea as they say in Castilian) approx. 10K, which left open circuit the input to a logic 1, as Joseph explained that what is needed to handle Dip Switches.
The good thing is you do not need anything, just cable and switches.
2)
The other method is a metal band or metal parts connected to the ground pin, the fingers are closed the circuit between ground and each of the entries (may be in a grid).
The downside of this is that the skin has a resistance of about 1MegaOhm (tested with a tester from the arm to the fingertip), changes with heart rate and far outweighs the pull up the port, so if plugged directly (replacing the switch) it is likely that nothing happens when we touch the buttons.
Therefore the solution is to use ... transistors, regardless of the type NPP serves.
Luckily I found a box with (by chance) 8 BC327 PNP transistors that I had left the project in the array of LEDs (they were not needed), I think it came out as 20 cents ea
this circuit is therefore:
We can ride in a prototype (not recommended), allow to air (not recommended, the legs of transthoracic are going to break or welded to a plate or made generic for the occasion.
This mini tutorial follows. When you can put photos finished product.
For Gzaloprgm, any use of this article must maintain a link to this site.
I am designing a kind of joystick with only 8 buttons. The good news is that, unlike many keyboards, you can press any of the 256 combinations and the system continues to record properly pressed.
Is based on a simple connection to port bidirectional parallel port (25 pin behind the pc), from pin 2 to 9.
The program I am developing in c + + for Windows, allows you to translate a push of the buttons on a keyboard key, transparently to the application that is using either a game, or any other.
On the hardware side there are two possibilities, which chose the second to be better in light and 8 do not have big buttons.
1)
Use buttons connected directly to ground and port. For example, the push for bit zero cablearía from leg 2 (entry 0) to 25 (mass). This method works because the house has a parallel port pull-up resistors (no idea as they say in Castilian) approx. 10K, which left open circuit the input to a logic 1, as Joseph explained that what is needed to handle Dip Switches.
The good thing is you do not need anything, just cable and switches.
2)
The other method is a metal band or metal parts connected to the ground pin, the fingers are closed the circuit between ground and each of the entries (may be in a grid).
The downside of this is that the skin has a resistance of about 1MegaOhm (tested with a tester from the arm to the fingertip), changes with heart rate and far outweighs the pull up the port, so if plugged directly (replacing the switch) it is likely that nothing happens when we touch the buttons.
Therefore the solution is to use ... transistors, regardless of the type NPP serves.
Luckily I found a box with (by chance) 8 BC327 PNP transistors that I had left the project in the array of LEDs (they were not needed), I think it came out as 20 cents ea
this circuit is therefore:
We can ride in a prototype (not recommended), allow to air (not recommended, the legs of transthoracic are going to break or welded to a plate or made generic for the occasion.
This mini tutorial follows. When you can put photos finished product.
For Gzaloprgm, any use of this article must maintain a link to this site.
Thursday, November 6, 2008
Bolt Size Honda Pilot License Holder
99 Bricks: Tetris and laws of gravity
I decided to start posting things that have nothing to do with electronics. I hope that you understand and can post other things as well.
Bricks In 99 the goal is to build a tower as high as possible using the same parts used in tetris. Facil? It is not, Now the parts can move, rotate and fall, destroying your building, desvalancearla, etc.
I can play 99 Bricks - Kongregate .
I decided to start posting things that have nothing to do with electronics. I hope that you understand and can post other things as well.
Bricks In 99 the goal is to build a tower as high as possible using the same parts used in tetris. Facil? It is not, Now the parts can move, rotate and fall, destroying your building, desvalancearla, etc.
I can play 99 Bricks - Kongregate .
2 Days Late For Period
Overcoming the bar of the 100 posts!
Congratulations guys! Surpassed 100 posts! They're all flawed:)
Gonza and Empe thank for making this possible, not because postea Manuel never wacho.
other hand, delete two posts that had links Gonzalo rare (I guess it was CONSCIOUS ¬ ¬).
Congratulations guys! Surpassed 100 posts! They're all flawed:)
Gonza and Empe thank for making this possible, not because postea Manuel never wacho.
other hand, delete two posts that had links Gonzalo rare (I guess it was CONSCIOUS ¬ ¬).
Wednesday, November 5, 2008
Why Does Oreos Make My Poop Black
2.0 MEGA POST TOPS COMPONENTS (2) (Capasitores)
These types of components the capasitor:
These types of components the capasitor:
This component is used to store loads and long, depending which one, will be different loading and unloading. Used to limit current and to "soften the alternative."
unpolarized linear Capasitor:
capasitor The characteristic of this is that no matter how engaged, always fulfill the same function
how to calculate the capacity is C = Q -----
V C the layers being measured in Farads, Q is the number of loads that can store, in coulombs and V is the intention that is measured in volts.
function of the load capacitor (for the test tomorrow) is: Vc (T) = V (1-e ^-t / T)
And the download is: Vc (T) = Vo.e ^-t / T
T = tau, presumably after the time equal to 5.taw / u will be on 99.7% of loaded or unloaded.
Note: All these features meet most of the capacitors.
Capacitor to ground:
This is a capacitor which is polarized perola leg in the figure is shown as a curve, provided is connected to ground. serves the same purpose as the others.
VARIABLE Capacitor (for atzequia watching it on TV).
This capacitor is variable but rather as a variable resistor that is used for radios, to vary the frequency.
Adjustable Capacitor:
This may vary depending capasitor wants one, is the same as the potentiometer varies but what is the capacity. also called trimmers, and adjusted once
Capacitor
sensitive to polarized light:
This capacitor is polarized, meaning that there is one way of putting it, is a leg that goes to the positive and the other is the negative, placing the other way around explodes is an interesting test, but not useless. and the other features this component, which is sensitive to temperature means that its capacity varies according to temperature (probably has a semiconductor material).
sensitive polarized Capacitor intention:
is as above, but instead of varying the temperature, varies by the intention to be applied.
The truth is that there are about 15 types and I have no desire to explain each one here let very sarpa a page that has all the components epuedan imagine, images
What Should My Psi Be For Pool Filter
Digital Project
did the semaphore "intelligent" in the crocodile and it shows much more the disposition from the legs
did the semaphore "intelligent" in the crocodile and it shows much more the disposition from the legs
How Many Beads Fit On Troll Bracelet
Tavo's heart programmer PCB pics
Finally, after having suffered so much ended the stethoscope! Okay so it seems. and to celebrate, here I leave the timing that we did with the heart of Tavo.
Finally, after having suffered so much ended the stethoscope! Okay so it seems. and to celebrate, here I leave the timing that we did with the heart of Tavo.
oviamente as we were using an electret capsule taped or anything without an order to fence the noise came out with these strains to the right but also works!
Monday, November 3, 2008
Household Condom Lube
Following my habit (?) To design pcb boards today I bring you the mini pics programmer.
J1 is a connector 9-pin serial port, R2 and R3 are resistors of 4.7 K or 5K to 1 / 4 or 1 / 8 W, D1 is a common rectifier diode (100mA and 50V is fine), R1 is a 10K resistor , U2 is the socket for the pic, C1 is an electrolytic capacitor 100uF to 5.1 or 6 volt, U1 is a 78L05.
Sunday, November 2, 2008
Review Yonex Nanospeed 9900
The speed of electricity
Chances are that some of you say that electric current flows very fast, even at the speed of light. This is impossible with the naked eye because the electrons are photons, electrons have mass and travel much slower than 0.3 meters per nano second (speed of light).
Assuming that we use and light a lamp 100W, 100V to 1 Ampere, according to the formula the current is moving at about 8 cm per hour . Yes, I was right. However when you light a lamp that is connected via cable 8 meters (to put a number), you do not have to wait 100 hours until the garment.
This is because metals are filled with electrons, if an electron is pushed from one side (8 cm per hour), the final electron moves instantly. Therefore the electricity flows very quickly, even if the current power moves very slowly.
formula that says the speed is
I
--------- Speed \u200b\u200b= S * ρ
Where I is the current flowing through the driver, s is the section Cable and rho is the resistivity of the material.
Chances are that some of you say that electric current flows very fast, even at the speed of light. This is impossible with the naked eye because the electrons are photons, electrons have mass and travel much slower than 0.3 meters per nano second (speed of light).
Assuming that we use and light a lamp 100W, 100V to 1 Ampere, according to the formula the current is moving at about 8 cm per hour . Yes, I was right. However when you light a lamp that is connected via cable 8 meters (to put a number), you do not have to wait 100 hours until the garment.
This is because metals are filled with electrons, if an electron is pushed from one side (8 cm per hour), the final electron moves instantly. Therefore the electricity flows very quickly, even if the current power moves very slowly.
formula that says the speed is
I
--------- Speed \u200b\u200b= S * ρ
Where I is the current flowing through the driver, s is the section Cable and rho is the resistivity of the material.
Saturday, November 1, 2008
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