Looping Waterslide

A looping waterslide, The Scorpion’s Tail,  will be opening up in Wisconsin at Noah’s Ark Water Park this summer. You slide down, around the loop, and out through the bottom 9 to 14 seconds later. Just look at how happy the guy looks in the rendering! This isn't the first looping waterslide in America. Action Park in New Jersey had one, but it was pretty poorly thought out and often gave riders bloody noses. The Scorpion’s Tail is much more high-tech and planned out. Instead of a loop that goes straight up and possible plonks people down on their heads, it's banked at a 60 degree angle. In case people don't make it all the way up there's an emergency hatch in the bottom they can use to get out. How it Works: A Computerized, Looping Waterslide

Topic by fungus amungus 8 years ago  |  last reply 8 years ago


Ground loop question? Answered

Hello , im making a little guitar amp with ROG tonemender as preamp and tda2003 power amp.This is my schematic , can you check it for me please!. Will it get ground loop problem ?? My English is bad so i can't understand clearly some documents about ground loop. i have 2 seperate board (a power amp based tda2003 and a ROG tonemender as preamp).They will use the same power supply .some thing like this picture http://i247.photobucket.com/albums/gg132/chipmapple/noobiedsn.png and this is schematic  http://i247.photobucket.com/albums/gg132/chipmapple/combineta.jpg Thanks!

Question by login721 7 years ago  |  last reply 6 years ago


Looping LCD Display

Okay, this might be a little confusing, so bear with me. I want to make a looping video of, say, Matrix code display on a small LCD screen, but I just want the little screen. Is there any way I could hook up a thumb drive or something to it to display that video in a loop?

Topic by manga-ka 10 years ago  |  last reply 10 years ago


Arduino stop the loop?

I have a problem with my code, i basically move a motor with the help of 3 relays, when a sensor does not detect the presence of an object part of a call, everything works perfectly, if it was after having called the function CHIAMATA() the arduino loop() stop unexplains, i certainly made a mistake, but i do not understand which. thanks for your help this is the code.... #include #include #include swRTC rtc; //create a new istance of the lib SoftwareSerial mySerial(3, 2); const int buttonPin = 19; const int sensorPin = 9; const int allarmPin =  13; int buttonState = 0; int sensorState = 0; int relay1 = 8; int relay2 = 7; int relay3 = 6; int var = 0; // initialize the stepper library on pins 8 through 11: void setup() {     rtc.stopRTC(); //stop the RTC     rtc.setTime(12,0,0); //set the time here     rtc.setDate(4,6,2012); //set the date here     rtc.startRTC(); //start the RTC   Serial.begin(19200); //choose the serial speed here   mySerial.begin(19200);   pinMode(allarmPin, OUTPUT); } void loop() { while(mySerial.available()!=0);{}delay(10);     Serial.print(rtc.getHours(), DEC);     Serial.print(":");     Serial.print(rtc.getMinutes(), DEC);     Serial.print(":");    Serial.print(rtc.getSeconds(), DEC);     Serial.println(" "); //stato riserva croccantini sensorState = digitalRead(sensorPin); if (sensorState == HIGH) {     // turn LED on:     digitalWrite(allarmPin, HIGH);     Serial.println("Croccantini esauriti");     Serial.println("Spia allarme ACCESA");     Serial.println("Tramoggia DISABILITATA");     Serial.println("Imposto la chiamata");     while(sensorState == HIGH) {CHIAMATA(); break;}   } else {     // turn LED off:     digitalWrite(allarmPin, LOW);     Serial.println("Croccantini OK");   } if (sensorState == LOW && rtc.getHours()== 12 && rtc.getMinutes()== 00 && rtc.getSeconds()== 5) {startmotor();}   //start manuale carico/scarico   // read the state of the pushbutton value:   buttonState = digitalRead(buttonPin);   // check if the pushbutton is pressed.   // if it is, the buttonState is HIGH:     if (buttonState == 1) {       Serial.print("Pulsante alimentazione manuale ATTIVO");                               // turn on:   // singlestartmotor();   }         } void startmotor(){ //numero di cicli di carico da eseguire (5) while(var < 5){ pinMode(relay1, OUTPUT);   pinMode(relay2, OUTPUT);     pinMode(relay3, OUTPUT); digitalWrite(relay3, LOW); //ABILITA TUTTO //AVANTI digitalWrite(relay1, LOW); digitalWrite(relay2, LOW); Serial.print("AVANTI"); delay(1000); // wait 2 seconds digitalWrite(relay3, HIGH);//STOP TUTTO digitalWrite(relay1, HIGH); digitalWrite(relay2, HIGH); delay(1000); //ATTESA PER INVERSIONE MARCIA //INDIETRO digitalWrite(relay3, LOW);//ABILITA TUTTO digitalWrite(relay1, HIGH); digitalWrite(relay2, HIGH); Serial.print("INDIETRO"); delay(1000); // wait 2 seconds   digitalWrite(relay3, HIGH);//STOP TUTTO   delay(5000); // wait 2 seconds   var++; }} void CHIAMATA() { mySerial.println("ATD329xxxxx135;");//dial the number, xxxx ix the phone number. delay(100); Serial.print("Chiamata in corso..."); return loop();}

Question by cris92 1 year ago  |  last reply 1 year ago


what's a network loop?

Question by 11tillr 8 years ago  |  last reply 8 years ago


Loop Time Ardunio

I need your help with a very very short code ?i have this code#include "Keyboard.h"#include "HID.h"void setup() { Keyboard.begin(); }void loop() {delay (1000); Keyboard.write(KEY_F1);delay (3000); Keyboard.write(KEY_F2);}this code works fine for me... but the problem isthis code give me only one "F1" and one "F2" in 4 seconds. i need "F1" appears every second (1000ms) and "F2" every 3 seconds (3000ms) in a infinyte loop

Topic by AngeloB49 1 year ago  |  last reply 1 year ago


infinite loop on instructables.com

whenever i try to open www.instructables.com i get an infite loop in my browser and i cannot access the page. linux tool "wget" gives this output: $> wget https://www.instructables.com/ --2011-06-01 10:37:35-- https://www.instructables.com/ Resolving www.instructables.com... 74.50.63.27 Connecting to www.instructables.com|74.50.63.27|:80... connected. HTTP request sent, awaiting response... 302 Moved Temporarily Location: https://www.instructables.com/index [following] --2011-06-01 10:37:36-- https://www.instructables.com/index Reusing existing connection to www.instructables.com:80. HTTP request sent, awaiting response... 301 Moved Permanently Location: https://www.instructables.com/ [following] --2011-06-01 10:37:36-- https://www.instructables.com/ Reusing existing connection to www.instructables.com:80. HTTP request sent, awaiting response... 302 Moved Temporarily and so on... that does not seem to be right :) when i open a saved link everything is fine, i just can not access the root page. no idea, if that has anything to do with my ips ( germany ) or has a different cause, but at the moment. tested from various providers, browsers and operating systems.

Topic by JohnCopper 7 years ago  |  last reply 7 years ago


Need help to built inductive loop for micro earpieces

Can anyone provide me instructions how to make inductive loop for small earpieces such as nokia one on http://www.extrafone.com/products.asp?partno=NK-LPS-3&allpartno;=YES?

Topic by zezancija 11 years ago  |  last reply 11 years ago


log in fails

When I log in, which appears to be successful, and I go back to write a comment, I go back to the log in screen. This goes on in a loop. It has happened before but usually works.

Topic by ClareBS 5 years ago  |  last reply 5 years ago


Xbox 360 headset loop?

One thing I am working on is looping the headset speaker back into the mic. This way it plays everything you hear back to the game. You may wonder why in the hell anyone would want to do that? well, this is for those Really annoying people or kids with really annoying voices(squeakers) When they start being annoying or making sounds, I can plug the modded headset in, so they can hear just how dumb they sound. I took apart my headset and there are 4 wires, 1 blue, 1 red wire, 1 white wire, and a bare wire. the red and blue wire go to the speaker, and the bare wire and white wire go to the mic I've googled more about it and it seems the white wire is a ground so does that mean I just solder the blue, red, and bare wire together and I'm done? thnx for any help you can give. (P.S. Yes the Picture is correct, the bare wire looks red, but is really brass, and the black wire is really red, with a plastic enamel.)

Topic by Jordo 10 years ago  |  last reply 10 years ago


How to create a loop under a switch (arduino)? Answered

I need help in creating a loop under a switch command in arduino IDE, I'm new to programming.  void loop() {   if (Serial.available() > 0) {      incomingByte = Serial.read();   } switch (incomingByte){    case '1':    digitalWrite(led1, LOW);    digitalWrite(led2, HIGH); delay(300);    digitalWrite(led1, LOW);    digital Write(led2, HIGH); break;     case'2':    digitalWrite(led1, LOW);    digitalWrite(led2, LOW); break; } I need the LEDs to blink alternatively (now it just blinks once), and stop when '2' is entered. I also tried   case '1':    for(int i = 0; i < 5; i++) {    digitalWrite(led1, HIGH);    digitalWrite(led2, LOW);    delay(200);    digitalWrite(led1, LOW);    digitalWrite(led2, HIGH);    delay(200); } break; case'2':    digitalWrite(led1, LOW);    digitalWrite(led2, LOW); break; But the circuit does not stop at '2'. Thanks

Question by ThisIsSteve 4 years ago  |  last reply 3 years ago


how to count 2 consecutive counting loops with arduino while limiting each count? Answered

This is part of a larger project but i'm stuck on the code for the loop. to make the situation simpler lat's say: i'm trying to count the number of button pushes and light 2 different LEDs. let's say green LED for x times, after that the red LED y times and go on repetitively. in the void loop i would like to set the amount of pushes because they are variables set within the loop function and reading different inputs.

Question by neofral 4 years ago  |  last reply 4 years ago


I keep getting a redirect loop error message, how do I clear the cache for this site to see if that is the problem?

I used to be able to view all the instructables but lately I keep getting the redirect loop error message. Please help or I will jut delete the whole site from my email. Thanks. Joe

Question by joek833 2 years ago  |  last reply 2 years ago


ARDUINO UNO nested loops

Hi there. i'm using arduino uno and i found that the code below does not work. Seems like "if" do not work inside "if" statements. how do i solve this problem dear community. if(ButtonStateAUTO==HIGH) { while(1) { Serial.println("auto"); delay(1); if(ButtonStateON1==HIGH) //while(1) { Serial.println("autoON1"); delay(1);} } } else if(ButtonStateMAN==HIGH) { //lcd.clear(); while(1) { Serial.println("man"); delay(1); if(ButtonStateON2==HIGH) Serial.println("manuALon2"); delay(1); } }

Topic by lovetronic 5 years ago  |  last reply 5 years ago


Logged in but can't add a comment

I would like to add a comment to an instructable. I am logged in, with a pro membership. Each time I click "add comment" I am returned to a "log in" panel. It is a loop, what can I do? This hasn't happened before. Thanks

Topic by ClareBS 6 years ago


PICAXE Code? Answered

I am not able to understand why is FOR loop used for the irout command can someone please tell me. Another ques can I use the serout pin for the IRout command Heres the Code: for b1 = 1 to 10    irout B.1,1,5    pause 45 next b1

Question by Bot1398 7 years ago  |  last reply 7 years ago


HD 2 reboot loop?

My New HD2 recently ran out of batteries, and when I went home to recharge it, it just booted up normally and vibrated, then turned off. It doesnt even charge! It just gets stuck like this in a an infinite loop, and I dont know what to do! please help!

Question by Soopah Steve 8 years ago  |  last reply 7 years ago


Making an instructable

Howdy! I uploaded a topic, but when I went to publish it, I kept getting an error message to add keywords, even though I had added them.  It won't publish.  Any ideas?  I hope it's still in the system someplace....

Topic by Stavros! 4 years ago  |  last reply 4 years ago


Trouble logging in, and appearing to be logged out while still logged in

I tried to log in just now and when I got to the landing page it showed that I wasn't logged in. I tried again, and failed again. On the third try, I discovered that I could log in successfully by turning off "keep me signed in". So, I came here to report it. After I clicked the Forums tab, I seemed to be logged out again. I clicked to log in and I was sent to the landing page again, already logged in. I came back here and again seemed to be logged out, but I ignored that. While I'm typing this I again appear to be logged in. On the post preview I also appear to be logged in. I suppose this could be a security issue: people could think they're logged out when they aren't.

Topic by PointyOintment 7 years ago  |  last reply 7 years ago


running a loop in arduino program

I want to run a loop only upon taking the user input i.e whenver user gives input, the loop must run N times where N is the user input. Can i do so? please suggest with the code.

Question by VinodhT 3 years ago  |  last reply 3 years ago


This webpage has a redirect loop

When I try viewing a fill preview of my instructables, I get the following message from Chrome (as does anyone else I send the link to): This webpage has a redirect loop The webpage at https://www.instructables.com/id/EHYZPVXHJKC28EP/ has resulted in too many redirects. Clearing your cookies for this site or allowing third-party cookies may fix the problem. If not, it is possibly a server configuration issue and not a problem with your computer. Learn more about this problem. Error code: ERR_TOO_MANY_REDIRECTS I have tried clearing my cache, using incognito mode, and nothing seems to help. This is an instructables that I published privately, then unpublished, and made public again.  I searched the forums for "redirect loop," but nothing came up..  Link: https://www.instructables.com/id/EHYZPVXHJKC28EP/ Operating System: OS X (10.8.4) Browser: Chrome (28.0.1500.95)

Topic by cat-haines 5 years ago  |  last reply 5 years ago


i found a loop hole

I found a loop hole in the 5th amendment i think they made a movie about this. okay how the story goes is a wife gets framed for her husbands murder but when she gets out of jail she sees that hes still alive so therefore legally she can kill him because of double jepherdy the fifth amendment she cant be on trial for the murder twice isnt that messed up?

Topic by ich bin ein pyro 11 years ago  |  last reply 11 years ago


Pressure Sensor Feedback loop

I'm trying to build something that will more or less maintain a constant, but adjustable level of pressure, probably driven by an electric motor. I've seen pressure-sensors on this site that increase conductivity with more pressure applied to the sensor, but mechanically I can't think of any way to get my device to work without a pressure sensor to decrease in conductivity with added pressure. Sadly I don't know enough about electrical components or circuitry to make it work with the former. If anyone here would happen to know how I could create such circuit, or can suggest of a purely mechanical alternative I would appreciate it.

Topic by Charlie_Szasz 7 years ago  |  last reply 7 years ago


Firefox 12 login loop

I am running Firefox 12.0.  I click the link from your emails, and it takes me to the instructable page.  Issue one: firefox never remembers my username.  Issue 2:  When I click login at the top right of page, enter my info, and click login, it never logs me in!  I only see the Signup, Login and Facebook on the top right of the page.  I can't access my account, and I'm not able to Favorite any articles.  I couldn't even login to post this bug!  I would go to the bug section, click new topic, sign in, click new topic again, and I'm brought back to the login screen.  I'm also not sure if its supposed to have it or not, but the popup/splash screen to login has no "Keep me singed in" check box.  Everything works fine in IE 7 though.

Topic by alljunkandcrap 6 years ago  |  last reply 6 years ago


Arduino programming loop help?

I am making a tic tac toe game. I have two sets of 9 leds. one set for player one and another for player 2. I have 4 pushbuttons 2 for each player. when i push 1 of the buttons i want the first led to light up then when i press it again the second led would light up ant the first would stop then if i would press the second button then it would keep the second led on and then i could choose another led while the first led i chose is still on. this is my code so far but ineed help on my loop any help is appreciated also in my code pbcp1 means pushbutton cursor player 1 and pbsp1 means pushbutton select player1. if it ends in 2 instead of one then it is just for player 2. Thanks in advance. Code: int pbcp1 = 13; int pbsp1 = 12; int pbcp2 = 11; int pbsp2 = 10; int greenled1 = 22; int greenled2 = 24; int greenled3 = 26; int greenled4 = 28; int greenled5 = 30; int greenled6 = 32; int greenled7 = 34; int greenled8 = 36; int greenled9 = 38; int redled1 = 23; int redled2 = 25; int redled3 = 27; int redled4 = 29; int redled5 = 31; int redled6 = 33; int redled7 = 35; int redled8 = 37; int redled9 = 39; void setup() {                  pinMode(greenled1, OUTPUT);   pinMode(greenled2, OUTPUT);   pinMode(greenled3, OUTPUT);   pinMode(greenled4, OUTPUT);    pinMode(greenled5, OUTPUT);   pinMode(greenled6, OUTPUT);    pinMode(greenled7, OUTPUT);   pinMode(greenled8, OUTPUT);   pinMode(greenled9, OUTPUT);   pinMode(redled1, OUTPUT);   pinMode(redled2, OUTPUT);   pinMode(redled3, OUTPUT);   pinMode(redled4, OUTPUT);    pinMode(redled5, OUTPUT);   pinMode(redled6, OUTPUT);   pinMode(redled7, OUTPUT);   pinMode(redled8, OUTPUT);   pinMode(redled9, OUTPUT);   pinMode(pbcp1, INPUT);   pinMode(pbsp1, INPUT);   pinMode(pbsp2, INPUT);   pinMode(pbcp2, INPUT);  } void loop() { }

Question by sarju7 5 years ago  |  last reply 5 years ago


Sequential Loops for Pin Activation?

Hi, I am starting with Arduino and I am in need of some help. I am trying to sequentially activate 5 pins. I need each pin to be active for 20 seconds in a PWM manner. During their active period I want an arduino sensor to read out the signals emmited by each pin effector. So far I have no problems with the PWM or sensing module code. However I am not able to find how to correctly sequentially activate the pins. I used millis(), etc, but so far I was able to only activate / read the signals from the first pin effector. The sketch doesn´t proceed to the 2nd --- pins. I really very much appreciate your help....Here goes the code so far... const int greenPin = 11; const int redPin = 10; const int irPin = 5; const int bluePin = 6; const int yellowPin = 9; const int outputLDR = 12; const int ldrSensor = A0; int brightness = 0; int increment = 1; int readingoutputLDR = 0; void setup() {   pinMode(greenPin, OUTPUT);   pinMode(redPin, OUTPUT);   pinMode(irPin, OUTPUT);   pinMode(bluePin, OUTPUT);   pinMode(yellowPin, OUTPUT);   Serial.begin(9600);     setup_parallax(); } void loop() { digitalWrite(outputLDR, HIGH); readingoutputLDR = analogRead(ldrSensor); while (millis()<5000)                 {                                       if(brightness > 255)                    {                     increment = -1; // count down after reaching 255                    }                    else if(brightness < 1)                    {                    increment = 1; // count up after dropping back down to 0                    }                    brightness = brightness + increment;                                                        analogWrite(greenPin, brightness); digitalWrite(redPin, LOW); digitalWrite(irPin, LOW); digitalWrite(bluePin, LOW); digitalWrite(yellowPin, LOW);                    Serial.print("Reading Green"); parallax_output();                                     } delay(1); while (millis()<5000)                 {                                       if(brightness > 255)                    {                     increment = -1; // count down after reaching 255                    }                    else if(brightness < 1)                    {                    increment = 1; // count up after dropping back down to 0                    }                    brightness = brightness + increment;                    delay(1);                    digitalWrite(greenPin, LOW); analogWrite(redPin, brightness); digitalWrite(irPin, LOW); digitalWrite(bluePin, LOW); digitalWrite(yellowPin, LOW);                   Serial.print("Reading Red"); parallax_output();                                  }   while (millis()<5000)                 {                                       if(brightness > 255)                    {                     increment = -1; // count down after reaching 255                    }                    else if(brightness < 1)                    {                    increment = 1; // count up after dropping back down to 0                    }                    brightness = brightness + increment;                    delay(1);                    digitalWrite(greenPin, LOW); digitalWrite(redPin, LOW); analogWrite(irPin, brightness); digitalWrite(bluePin, LOW); digitalWrite(yellowPin, LOW);                     Serial.print("Reading IR"); parallax_output();                                  } while (millis()<5000)                 {                                       if(brightness > 255)                    {                     increment = -1; // count down after reaching 255                    }                    else if(brightness < 1)                    {                    increment = 1; // count up after dropping back down to 0                    }                    brightness = brightness + increment;                    delay(1);                    digitalWrite(greenPin, LOW); digitalWrite(redPin, LOW); digitalWrite(irPin, LOW); analogWrite(bluePin, brightness); digitalWrite(yellowPin, LOW);                    Serial.print("Reading Blue"); parallax_output();                                  } while (millis()<5000)                 {                                       if(brightness > 255)                    {                     increment = -1; // count down after reaching 255                    }                    else if(brightness < 1)                    {                    increment = 1; // count up after dropping back down to 0                    }                    brightness = brightness + increment;                    delay(1);                    digitalWrite(greenPin, LOW); digitalWrite(redPin, LOW); digitalWrite(irPin, LOW); digitalWrite(bluePin, LOW); analogWrite(yellowPin, brightness);                   Serial.print("Reading Yellow"); parallax_output();                                  } } void parallax_output() {                    Serial.print("DATA,DATE,TIME,");                                                                Serial.println(readingoutputLDR);                    } void setup_parallax() {     Serial.println("CLEARDATA");     Serial.println("LABEL,Date,Time,Green Response, Red Response, IR Response, Blue Response, Yellow Response"); }

Question by aureta 4 years ago  |  last reply 4 years ago


Sample and Loop Frog (Bent toy)

Hey Folks, i ordered this frog at dealextreme. com.Its called a "Digitally Recordable Motion Activated Visitor Welcoming Door Chime Frog". Originally it is a toy that says "Hello" when someone passes by. You can use your own sample, simply by pressing a button to record it to the frog. Nice toy for circuit bending i thought. Here's what i made today. I added loop, pitch control, input and output jack and a button to start the sample manually. Okay it has still a few bugs, but it works. Hope you enjoy the video:  

Topic by mischka 9 years ago  |  last reply 9 years ago


What is that called??

What is that called? What is that thing called-there's a looped wire between two planks of wood and we have to bring another wire with a ring in it to the other end.You know what i mean??please help.i want to make it for my physics project.?

Question by Birdielicious 8 years ago  |  last reply 8 years ago


Is there a way to hold the command line ?

Dears, using Wscript is there a way to perform a Wscript.Echo command and do not skip to the next line? My idea is to perform a display, hold the command line and perform another display over the previous one (in the same line) giving the idea of a blinking message. I tried using the CLS command in a loop but this command is executed just once at the end of the loop. Any response will be greatly appreciated. Regards, Alberto Alencar / Brazil - South America region.

Question by alencaap 9 years ago  |  last reply 9 years ago


Need a little help with Arduino code Answered

Hello, I'm in need of a little help with my Arduino code. I'm still an amateur with Arduino so I'm still learning. I know there is some function that makes the loop only happen for a certain amount of times,  but I forgot what it was. If someone knows what I'm talking about, thanks a lot for your assistance.

Question by Orange robot 2 years ago  |  last reply 1 year ago


Floppy Disk Analog Audio

Recently i was experimenting with cassette tape loops and had this bright idea. so i googled it and found someone else had done this already of course. check this out; http://www.crunchgear.com/2009/04/25/video-recording-analog-audio-to-a-floppy-disk/could someone make a step by step instructable for this? (i dont understand it fully)thanks

Topic by synthetic_iron_oxide 9 years ago  |  last reply 9 years ago


Need to loop a VBA - Macros Code in Excel 2010?

Hello everyone I need to apply a loop to the following code such that the constant (50) in ActiveCell.FormulaR1C1 = "=IF(C[-7]=50,C[-8],"""")" is replaced by a variable that has the values depending on column M as shown in the picture. Furthermore I also want my code to progress downwards and fill all the empty places, depending on the adjacent row value in column n. Do I need to switch over to absolute reference? The code is as under: Sub Percentile() ' ' Percentile Macro ' '     ActiveCell.FormulaR1C1 = "Rough Work"     Range("L2").Select     ActiveCell.FormulaR1C1 = "=IF(C[-7]=50,C[-8],"""")"     Range("L2").Select     Selection.AutoFill Destination:=Range("L2:L124252")     Range("L2:L124252").Select     Columns("L:L").Select     Selection.Copy     Columns("AG:AG").Select     Selection.PasteSpecial Paste:=xlPasteValues, Operation:=xlNone, SkipBlanks _         :=False, Transpose:=False     Columns("Q:Q").Select     Application.CutCopyMode = False     Selection.ClearContents     Range("Q1").Select     ActiveCell.FormulaR1C1 = "Percentile 10%"     Range("Q2").Select     ActiveCell.FormulaR1C1 = "=PERCENTILE(C[16],0.1)"     Columns("R:U").Select     Selection.ClearContents     Range("R1").Select     ActiveCell.FormulaR1C1 = "Percentile 25%"     Range("S1").Select     ActiveCell.FormulaR1C1 = "Percentile 50%"     Range("T1").Select     ActiveCell.FormulaR1C1 = "Percentile 75%"     Range("U1").Select     ActiveCell.FormulaR1C1 = "Percentile 90%"     Range("Q2").Select     ActiveCell.FormulaR1C1 = "=PERCENTILE(C[16],0.1)"     Range("R2").Select     ActiveCell.FormulaR1C1 = "=PERCENTILE(C[15],0.25)"     Range("S2").Select     ActiveCell.FormulaR1C1 = "=PERCENTILE(C[14],0.5)"     Range("T2").Select     ActiveCell.FormulaR1C1 = "=PERCENTILE(C[13],0.75)"     Range("U2").Select     ActiveCell.FormulaR1C1 = "=PERCENTILE(C[12],0.9)"     Range("U3").Select End Sub You could find the Main Excel sheet here: http://tinyurl.com/aqheuyp

Question by raishikoh 6 years ago


Is it possible to loop power to make it run in a continuos loop? I know this isn't really useful, i was just wondering.

Lets say you had two power source and one device needing the power. Would you be able to have a switch and switch between the 2 power sources? My second question is, What if you had 1 Power Source and a switch. The switch is connected to the power source and a wire, and the output is the same wire connected, making a loop. Would power run in a continuos loop ? Or would you need a capacitor bank?

Question by gabe94 9 years ago  |  last reply 9 years ago


can a drive belt from a printer be shortened? Answered

I am trying to find a small belt capable of turning gears in my home built rc car, but all of the belts i can use are too long, does anyone know if there is a way that i can make the belt shorter so it wont be too long? i need it to still be in a loop. i only have one right now, so if someone could tell me a way of getting this to work that would be great.  so can someone help? and if it is possible, when explaining how to reconnect it, pictures could help a lot in explaining this

Question by zack247 8 years ago  |  last reply 8 years ago


Need Help Arduino controlled Stepper Motor Proportional Control

Need help with a basic code I'm trying to make for a personal project, I'm new to Arduino and  I find an example of this type of coding would be useful for me to learn off. Would like to get better at this programming stuff and move on to other types of coding. Looked at the basics via the Arduino website but nothing really covered this method of control. A stepper motors speed can be altered via the use of proportional control. The feedback sensor is a potentiometer, which should tell the stepper motor when to stop.  Here are the basics of what I know the code must contain  Kp = 1;// the gain of the proportional control must contain a multiple factor error = Setpoint -actual position; // provides the error value output = error*Kp; // this will provide the drive for the stepper The stepper should stop when the setpoint value equals the actual value. So the stepper should move faster to its target the further away it is. Using a ULN2004A for the driver and have this setup for the circuit. https://www.arduino.cc/en/uploads/Tutorial/UnipolarKnob_bblg.png Any help explaining or showing an example code upon how to accomplish this task would be appreciated. No idea how to make this affect the stepper speed or even do this control feedback. Am in need of some help.

Topic by Prime01 2 years ago  |  last reply 2 years ago


Help needed with Wire Loop Game

Hello, I wish to make the Wire Loop Game for a childrens' fun-n-fair. But I wish to add a simple SCR/circuit so that the buzzer sounds continuously instead of momentarily, once the loop touches the other wire. Can someone please show me or direct me to a website with a simple SCR, which is easily available (in India since I'm from there) circuit that can do the job? Any help greatly appreciated! Thanks, Deboo

Topic by deboogeek 7 years ago


broken beam switch for audio loop?

I  want to have a set up that play a message or sound every  time a light beam is broken.  how should i do this?

Question by instructarnie 6 years ago  |  last reply 6 years ago


Matlab-Arduino Multi Servos "for" loop ?

Hi! I am new  to arduino. I am struggling with basic problem i guess. I need to rotate 2 servo slowly with for loop in Matlab. To rotate one servo from 90 to 120, I am using this code in Matlab: for i=90:120 fwrite(arduino, i); pause(0.03); end I found zoomkat sample multi servo code but it requires string command   like: fprintf(arduino,"%c", "700a,"); And of course ( for i=90:120 fprintf(arduino,"%c", "ia,"); pause(0.03); end ) Not working. I thought that first number of i may represent servo number. For example;  fwrite(arduino, 1100) -> Servo number 1 to 100 degree fwrite(arduino, 2050) -> Servo number 2 to 50 degree Arduino Code: #include Servo servo1, servo2;  void setup() {   Serial.begin(9600);   servo1.attach(6);    servo2.attach(7);  } void loop() {   if( Serial.available() )     {         int x = Serial.read();         int servoNum=x/1000;         int w=x-(servoNum*1000);         if (servoNum==1){           servo1.write(w);}         if (servoNum==2){           servo2.write(w);}      }      } And when i try fwrite command in matlab  arduino = serial('COM3','BaudRate',9600); fopen(arduino); pause(0.5) for i=60:90 a=2000+i; fwrite(arduino, a);  %Servo number 2  from 60 to 90  pause(0.02) end But this one also not working... How can i do that? Please help..

Question by mr61 5 years ago  |  last reply 5 years ago


how to avoid ground loop when use one powersupply for multi guitar pedal? Answered

Hello . I going to buid a guitar pedal witch have 2 boards in a box and use a power supply to power both of them.But i dont know how to wire them to avoid groound loop problem.Normal i will do like the picture below .Do i need to cut any wire to avoid the noise ?? Thanks for advance! sorry for may bad English!

Question by login721 7 years ago  |  last reply 7 years ago


sound effects modules

Hello!! I am planning several Halloween props that will benefit bigly from sound effects. For instance...I'm working on a mantel version of the demonic grandfather clock in Disney's Haunted Mansion. It would be awesome to have the sound of the ominous ticking, backed with a chime, that the "real" clock has. This could be an audio loop of just a few seconds. Some of the other parts of my scheme would be enhanced with short loops of sound effects or mood music...a minute or two at most. I don't have a background in electronics, but I can follow directions. Any advice on constructing a few, small sound effects modules? Thanks!!

Topic by Purple Chez 1 year ago  |  last reply 1 year ago


need help with using one power supply to power multi guitar pedal? Answered

Hello . i have two DIY guitar pedal , they work normal in a chain and each of them use they own power supply( 9v AC-DC adapter).Now i want to use one power supply to power both of them.So , i wire them like the picture bellow, and i get the 60hz noise. Can you please tell me how to get rid of that noise. Thanks in advance ! sorry for my bad English. http://i247.photobucket.com/albums/gg132/chipmapple/noisepw.png

Question by login721 7 years ago  |  last reply 7 years ago


Help needed for making the WIre Loop Game Answered

Hello, I wish to make the Wire Loop Game for a childrens' fun-n-fair. But I wish to add a simple SCR/circuit so that the buzzer sounds continuously instead of momentarily, once the loop touches the other wire. Can someone please show me or direct me to a website with a simple SCR circuit, which is easily available (in India since I'm from there) that can do the job? If a readily available transistor can do this job, that would be good too. Any help greatly appreciated! Thanks, Deboo

Question by deboogeek 7 years ago  |  last reply 7 years ago


can i make a loop for a ball machine with out tubing? Answered

Can i make a loop for a ball machine with out tubing? i was thinking about flexis but im not sure or if i can get a cheap hack(i do have oranges)

Question by knexsuperbuilderfreak 9 years ago  |  last reply 9 years ago


help solve my black screen of death and sound loop?

I need to know how to fix this, I get this black screen where my monitor goes into standby and the sound loops in certain games like UT3 but doesn't happen in games like L4D, my specs are Q6600, nvidia 9600 gso (768mb) and 3gig ram with vista premium so i can play the games do you know of any reasons why the screen and sound do what they do? and how do i fix it

Question by mayney93 9 years ago  |  last reply 9 years ago


I need a velcro-receptive ("loop") that is adhesive on one side. What do I need to search for on eBay?

Hi everyone.I need a one side adhesive, velcro-receptive tape.That is, an adhesive tape that is sticky on one side and on the other it has a felt-like tissue.English is not my first language and I am not sure about what to search for on eBay or Aliexpress to buy.I need this for my project but all the tapes I could find have both sides (both hook and loop) and they are much costlier than what I'd expect just for a felt-like one-side adhesive tapes.Can you help me please?Thank you,Atkers

Question by atkers 8 weeks ago  |  last reply 8 weeks ago


What would it take to make a power loop, that couldn't necessarily power anything, but could loop? Answered

 Like if you had a power source connected to 2 wire's and then you connected those 2 wires to a switch and then back to the original wire's. And then you'd switch the power from the original power source, to itself. What would it take to make a power loop that wouldn't power anything essentially, but would still run in a loop?

Question by gabe94 9 years ago  |  last reply 9 years ago


How to measure open loop H(s)? Answered

When designing constant current linear dummy loads, and when I was (attempting) to design a really nice linear power supply with op amps and pass transistors, I consistently run into the devil of the circuits that incorporate feedback. INSTABILITY! Especially if I use fast op amps, or MOSFETs, etc. My understanding as to why this happens is because I still have some positive gain at the point at the frequencies where signal the total loop has that dreaded -180 degree phase (gain margin) and then where the gain is unity and phase is at -180, again allowing that frequency component to be successively amplified (or never attenuated) as that wave whirls around the loop. However, with op amp circuits, how am I supposed to get an accurate open loop measurement, when the DC gain is so stupidly high the input to an op amp is essentially a comparator? http://www.ti.com/lit/an/snva364a/snva364a.pdf This article suggests whacking in a 20 ohm resistor and injecting a signal into it, and measuring the voltage on either side of it (?) How is this supposed to work? Is there a better method in something like LTspice?

Question by -max- 1 year ago  |  last reply 1 year ago


Metal rod stock for furniture (especially loops)

I wanted to make some shelves like this http://www.wedowood.dk/shoerack/ but I have no idea which metal they used or how to bend it. Is there anything strong enough to support even some books that can be bent with pliers? If so, wouldn't it be really hard to get anything good looking? If not, how to bend? I know there are shop brakes, but aren't they only for sheet metal? And, surely you cannot make a 180 turn that small with a shop brake? Also, what gauge/material rodstock to use? Is there some way (even approximate) to relate gauge and material to weight supported?  Many thanks in advance Joe

Topic by JosephS164 2 years ago  |  last reply 2 years ago


How can I make something play an mp3 in a loop?

I want to make something that can play an mp3 file from maybe an SD or MicroSD card. It needs to be small, and I would like to be able to hard wire it to a speaker. I'm making a music box, and I want it to fit in. I do not want to use Arduino and I want it to be as simple as possible. It only needs to play the file in a loop.

Question by metalshiflet 5 years ago  |  last reply 5 years ago


My computer locks up with an audio loop, help! Answered

I recently upgraded my hardware (I put in two 8600 GT's in SLI, and an E6850, both used), and shortly after, my games began to lock up. Whatever was on the screen would stay there, and the last second of audio would loop. The only way to get out of it was a hard reset. Then I noticed when I unplugged my other two hard drives, games wouldn't freeze up anymore. So I replaced my 400 watt PSU with a 550 watt, with 50 amps on the 12 volt rails. Everything seemed to clear up, until today, when I was browsing Newegg and listening to Audioslave (not very resource intensive), and it locked up with the same symptoms for no apparent reason. I'm getting worried now, as I shelled out 75 bucks for a decent PSU and the same stuff is happening. My CPU idles in the upper 30's to lower 40's, and peaks at 60 C in games. I know it's a bit toasty, but it shouldn't be hot enough to cause this sort of problem, right? So if anyone has any ideas about what's going on, any help is appreciated.

Question by RelaxedSoup 9 years ago  |  last reply 9 years ago