Cute musical time-waster.

I just "stumbled" on this sweet little tool for composing and playing musical loops. Pitch is on the vertical axis, time across the horizontal. I don't have any way to record it - if you copy this pattern, it sounds like a thumb piano.

Posted by Kiteman 6 years ago

How to make a simple voice changer

Hello guys I have a question. I'm just trying to make a simple, cheap, voice changer like the little stupid toys you buy from the store.  How can I do it? I've looked ALL over the internet, and can't find ANYTHING thats simple like the little toys you get. Plus the ones I do find are too expensive.  Thanks,

Posted by HavocRC 5 years ago

DTMF Generator with Arduino

Hello mate, I have telephone with only receiver and no keypad. So, i need to generate DTMF tones to dial the number. Is it possible for me to generate a DTMF tone generator by programming arduino with the frequencies and attaching speaker to it? Also, how can i club two tones which are required to be sent at a single moment? Thank You. 

Posted by anuragkanase 7 years ago

Baxxandal Tone Control (Bass and Treble)

Hi guys, got a problem here. I cannot get this circuit (baxxandall tone control circuit) working, can anyone help me out here?? When i follow his circuit i can only control the voluem. Please help me, thankss

Posted by iBenzzz 2 years ago

Is my hearing wacky?

I was just using a tone generator and I chose a sweep mode. I can here 2.1mhz, but when I did a sweep down to 100Hz there was a long pause when I couldn't here anything, and then I can here it. Is this normal?

Posted by guyfrom7up 10 years ago

Real Tone Cable (Rocksmith) 1/4" to USB adapter

I'm doing a project. Attempting to replicate the rocksmith real tone cable. Yeah it's not going to be easy... I need to; amplify the signal coming from the guitar, then find an Analog to digital Converter, then figure out how to conect via USB, then I want to write a program on the computer... but thats a looooonnnng way off. I figure the voltage coming from the guitar output is about 500mv but im not sure because it's too small to read with my meter. What kind of transistor or op-amp can I use to get the voltage to around 10v where an ADC can read it? If you have any advice on what kind of ADC to use please let me know. I think 10v is around the min for ADC's input range. Would it be a better idea to amplify the signal further so i can use a different ADC? If anyone has a real tone cable they feal like opening up... let me know whats inside eh? Thanks for any help

Posted by amplifihip 5 years ago

Pitchforks and denial

I felt an urge to blog. Though some of you may find the content or tone offensive, I do not apologise.

Posted by Kiteman 6 years ago

Stepper Motor Music!

Some guy used steppers to play tones and music using an arduino :DSource And a few others

Posted by ReCreate 9 years ago

Dial-up internet server

Hi everyone, I am trying to connect my Sega Dreamcast to the internet with it's 56k modem, without using telephone lines. From what I understand, I need to connect my my Dreamcast to a tone generator, then to a USB modem plugged into a laptop with which to forward the connection over wifi. My question is: Is this is a plausible solution, and if so, could I simplify and shrink this set up. Ideally I would like to figure out if I could build a tone generator instead of buying one and how can I replace the laptop with something like a raspberry pi. I think that once I figured out how to forward the connection on my laptop, it would be fairly straightforward to do the same with a raspberry pi. I would prefer a relatively compact solution if possible. Thanks in advance for any help or thoughts.

Posted by wamj99 4 years ago

Whats Your Ringtone On Your Cellular Device?

Just out of curiosity, what is your current ring tone on your cell phone?Include a title, soundbite, or even a video!My ringtone

Posted by bumpus 9 years ago

Turntable Skipping

One of my records is scratched, and I thought it was impossible to play through perfectly because of how scratched it is.  I found out today that it IS possible!  I found that by adjusting the tone arm to track more lightly, the record would paly over the scratches instead of following them.  Alas, there is a pop when the needle goes over the scratch, but a pop is better than a skipped section of a song.  My tone arm doesn't have a counterweight on it, so I MacGyvered a way to balance it; I taped a fifty-cent piece to the end of it on the top to make it track lighter.  If your record player is skipping, give this a try before you clean your record in hopes of getting rid of the scratch.  This way is a lot easier. 

Posted by KaydenST 4 years ago

Simple and CHEAP voting system - AM?

I'm a teacher, and I have a little (but not a lot) of money to spend. I'd really like to buy something like a Quizdom voting system, but with anything up to five classes of 26 running at once, it's just not financially possible. Which got me thunking... AM radio transmitters are cheap to build right? I've seen one using a 555 timer and an NPN transistor - these cost pennies - use to transmit voice. Could I instead transmit a BEEP - or high tone or something - each timer on a slightly different frequency? And have a single receiver which then listens across this frequency range and identifies which frequency is transmitting the tone or signal and feeds that back into... PC, Arduino, Raspberry Pi? Range would only need to be like 5-10m.

Posted by ohowson 5 years ago

Doorbell Issues

I have a problem with my doorbell, and it's driving me insane. A couple of weeks ago I decided to fix our doorbell, one that has not worked for a very long time (decades). I replaced the grommets that go on the tone bars. I cleaned the plungers and everything. It worked just fine, until about a week ago. Sometimes it will ring, sometimes it's very quiet, sometimes it doesn't ring at all, and sometimes it will do a short ring (the ring doesn't last very long, like it used to). Also, it is about 40 years old. Another thing, the switch is rated at 16V, and I'm using an 18V doorbell, could this cause the circuit to not complete properly? Here is a picture of it (cover removed) I thought by putting hot glue on the grommets would help, but it didn't. The pic shows the glue, but now it is removed.

Posted by popit 7 years ago

Current Artwork

I am doing this for a friend's wedding. The medium is acrylic paints. The photo is fuzzy and doesn't do it justice. You can't see the skin tone changes and highlights, :( This is my first time painting something like this, it's all mainly guess work (The hair, the skin, etc.) Work in progress. What are you working on?

Posted by Spl1nt3rC3ll 10 years ago

Audio Detector

Is there some type of electrical component which detects high frequency sounds like those mosquito ring tones? I've looked around and seen things which apparently detect high frequency radio waves, but that isn't really what I want (at least I don't think it is). Thanks in advance.

Posted by brickzima 10 years ago

Forward/Reverse engine using 2 micro pins - How?

I've been wanting to get into more advance projects after i've down lights, tunes, and other things. So first to mind, knex and motors. have tones of it. The only problem, How can i get a forward/backward on the engine, with just 2 micro pins? This is a normle + - motor.

Posted by Killa-X 10 years ago

Please guide me to the luxurious world of electricity, I'm a newcomer

Hello, i am running on projects here, and got no idea where to begin.i want to make an alarm clock. The desired time and ringing tone for the alarm should be able to be set accordingly to my will at any time. The requirements is, i must construct it with ATMEGA8535 or ATMEGA328 or ATMEGA16. Any suggestions what's the first thing to do here? pls kindly help me:)

Posted by jayfetra 3 years ago

Hearing a dialup connection on a FM car radio?

My mum was driving to uni and we hear a dial-up connection over the radio twice or three times, on 103.50 FM to be exact. A little while ago i rang my mum and she was in the same place and suddenly the phone goes silent and it starts making all different tones. What's happening? What's causing it? Why's it on the FM band

Posted by thermoelectric 10 years ago

sound emitter

i need to know how to make a circuit the will emit sound with levels as high pitched as a dog whistle i been looking around but i can't seem to find one which allows you to control the frequency along with the pitch and tone i'd appreciate any advice and or help on this along with any information leading to any good instructables on here that fit the discryption thank you to every who gives the feed

Posted by maskofdarkness22 7 years ago

How can I get a loud alarm?

Ok so I need an alarm for my project, a very loud alarm. . . And I can't seem to get these dumb buzzer to output a decent sound. I have a lipo checker that uses these type of buzzers  and they are ear shattering. I tried putting the regular buzzers and the were no where near as loud. Also if I want to use the tone function on the arduino, how do i make the buzzer louder?

Posted by HavocRC 3 years ago

how do i make an EQ effects pedal?

I am very much a beginer in electronics, but i would like to make an effects pedal with three tone control's (low mid and high), and i would like to be able to bypass with a dpdt switch. all i know is this would require using band pass filters but i know absolutely nothing else :) can anyone help? or does anyone know of a instructable covering this particular gizmo?

Posted by j-plan 9 years ago

Free to Good Home

Just an Idea but if someone can market it feel free to, just send me one LOL. There are many medical alert necklaces / bracelets etc out there for people act risk of falling which is a good thing,but the catch to all of them is the monthly cost of subscribing to some monitoring service and $20 a month doesn't sound much but to someone on a fixed income it can be a big deal. It seems reasonable that someone out there could come up with a simple system using off the shelf stuff for a transmitter and receiver set up and hit the button and the receiver dials the first of say three numbers with a recorded message. It would dial out until it received a human, have it wait for the tone of someone pushing one or something and then play a recorded message "Help I've fallen and can't get up" or something and send help to 1313 Mockingbird Lane. You could put a relative or a neighbor first and a second perhaps then 911 or if the person is likely to need fast medical help have it dial straight to 911 but make it simple to program. Make the necklace / pendant play a sound when it's been activated and maybe make a 20 second pause before it dials out so people could cancel accidental triggers by picking up the phone or something, which cancels the tone from the pendant but leave the tone on once the first number has been dialed incase the victim loses consciousness so first alerters can find them quicker. Put a silence button on the receiving unit but disengage the phone silencing option in case the first person there picks up the phone... This seems a simple concept that people could sell for like $40 and I'd bet all my donuts there is a big market for something like this in that range, plus it would help a lot of people by taking away some of the fear of living alone as we age... And we all age. Any thoughts? Could it fly?

Posted by Senseless 10 years ago

Simple AM transmitter

I wish to make an extremely small (size and part count) AM transmitter using only a few transistors and passive components. I wish to transmit an audible tone on a set frequency.I am thinking along the lines of a transistor flip-flop circuit oscillator, perhaps routed through another. It really needs to have less that five/six small components. DIP components are too big. Small electrolytic and other capacitors, transistors, and resistors are acceptable. Transmission distance needs to be at least 1/4 of a meter, but further is better. It needs to run on between 1.5 and 6 volts, low to middle'in milli-ampage im thinking watch batteries for a few hours at least. I have read the following article but as stated before it needs to be very small. anyone help me out with a schematic, thoughts or advice?Thanks in advance,-AndyP.s. I can work out transistor loop timings and I understand how the Amplitude Modulation system works. Current thoughts/plans (if you can call them that) are an audible tone switching a secondary transistor loop from high (no resistor in series) to low (resistor in series) power and back. The secondry loop will be switching at the target frequency.

Posted by andy 10 years ago

Custom Bass

If you could have a custom bass (or have one) what would it be like? If i had one, it would have the cutaway style of a Music man bongo, with tribunal flame bridge. the end of the body would have a sort of curved flying v style to it. The finish would be a sort of metallic blue and black flame. KIllswitch, and a couple of built in effects, couple gaine and tone knobs. 5 string, with the usual music man head. Maybe a bit different though, all thats just off the top of my head.

Posted by wingman246 10 years ago

How to force voice calls through A2DP bluetooth device

Hey all,  I have an A2DP bluetooth music receiver hooked up to my car. I connect my iphone to it. here is the link to it. It plays music pristinely through the device.  But when I try to make a phone call, it doesn't send the dial tone or the call through the bluetooth device, but only through the iphone. Is there a hack to force the call through the A2DP device? Thanks

Posted by D4VIDLE 4 years ago

Music box concept + Guitar guts = Player Guitar

Don't know if this specifically needs to go in music but, whatever. for christmas i made my brother a (somewhat poorly constructed) lap steel guitar. seriously, it wasn't that good, but it worked and it was more of a "can i do this project" kind of thing, plus he has a friend who is an ACTUAL luthier so he's going to "redo it".... anywho, i made said guitar using zither pins for the tuning pegs and it got me to thinking. with the zither pins you could theoretcially have a guitar string of any length and use the pin to set that string to any given tone on any particular scale (say the functional length of the string was only 3 could still theoretically set the tune on that string to a semi permanent desired tone). so, with a bunch of short lengths of various guage strings you could create a guitar music box (probably more of a music barrel but, whatever). now, normal music box has the tone pins (not sure what they're called...but the tuned slivers of metal) stationary along one (or more) fixed planes and a revolving "picking" drum that strikes each pin to make the tone in the order that it needs to be in a piece of music. for whatever reason. so, combine these two ideas and you get a player guitar, or a guitar based music box, whatever. so, obviously this could be acoustic or electric. my personal preference is to lean towards electric, so that's where the question comes in. a normal guitar pickup has 4, 6, or whatever magnets fixed within it's coils so that you can pickup the signal from 4, 6, or whatever strings that are strung paralell(ish) across the guitar. for the music box concept to work (as opposed to a true player guitar that plays across the strings) the individual string pieces (that are all individually tuned etc) wouldn't be able to be parallell to each other like a normal guitar. they'd either be in line on the same plane or spaced out in odd ways (i've got an odd concept for the actual construction...where the strings do the moving and the "strummers" stay put). so, does a single magnet pickup exist? that could just be wired up into the rest of a normal electric guitar's circuitry? or would i have to build such a thing from scratch (and subsequently how would i do that)? would a normal electric guitar's circuitry be able to work the same with more than 6 pickups in play (thinking of a cheap one from a pawn shop...that's what i built the slide guitar from)? also, taking song suggestions and subsequent individual string tuning plans *i do know that there are "better" ways to make a self playing guitar that uses the normal guitar form factor and robotics and such....but this seems more fun. plus, i might make it into a wind powerd thing...electric guitar windchimes anyone?

Posted by crapflinger 7 years ago

Metroid Cubed: The original metroid game brought back in 3D with voxels.

VL-Tone, the sole creator at Qubed Studios, has recreated the full metroid game in 3d. It's called Metroid Cubed and it's great stuff for fans of the classic free-form exploration game. In his updated version, you can warp to any place on the map, and can change all sorts of things such as lighting and backgrounds and even play sans armor. He's also got some other great voxel experiments and a Mario64 editor on the site as well.Click and check it out: Metroid Cubed

Posted by royalestel 10 years ago

Home Dial-In Server

I'm trying to set up a home dial-in server. I'd like it to have these features: -Runs from DOS -Can answer on the fourth ring -If no one is home, can redirect the call to the answering machine if it does not detect a computer on the other end (I.E. redirect if it doesn't hear computer tones) That last note is especially important. I've looked at the getty series, but it seems that it's only for Linux. Is there a way to do it with Kermit, C-Kermit, or any other of the Kermit programs? Any help would be appreciated, thanks in advance.

Posted by 1up 10 years ago

Super Complicated Code (playing music and moving servos at the same time)

Hey all! I'm trying to make a present for a friend and it's not working out at all :( (due this tuesday). So I ripped up a teddy bear, put some servos in it's arm, and a speaker in it's stomach. I'm trying to use my arduino uno to play tunes over the speaker while make it's arms wobble. My problem is that the song contains delays for getting the notes on beat, which means that I can't have other things going on at once. Is there anything else I can do? I'm stuck with just making it's arms move, then having the tunes play while the arms are still, then having them move again.  Now I did figure out a method to get the servos to move without using a delay function. That's at the very bottom void move(); I know it's probably about the worst way to make servos move slowly without delay but it works. I'm not worried about that. I'm just wondering how am I going to play music and have the servos move at the same time? Thanks! Here's my code.  int speakerPin = 5; int buttonPin = 6; int buttonPress; int buttonCount;  int leds = 13; #include int servospeed(100); Servo servoleft; Servo servoright; int val = 20; int val2; boolean state = true; unsigned long currentMillis; unsigned long previousMillis; int songLength1 = 7000; int songLength2; /*****************************************************************************************************/ /* Smaller value -> all tunes play faster; bigger -> slower. Recommend you don't change this, but instead use playTune() to pass different beatLength values to parseTune() for different songs */ const int beatLength = 50; // Generate a tone by passing a square wave of a certain period to the piezo void playTone(int tone, int duration) {   for (long i = 0; i < duration * 1000L; i += tone * 2) {     digitalWrite(speakerPin, HIGH);     delayMicroseconds(tone);     digitalWrite(speakerPin, LOW);     delayMicroseconds(tone);   } } /* This works out what period, in microseconds, to use for the square wave for a given note. To calculate these, p = ((1 / freq) * 1,000,000) / 2. We divide by 2 because the signal will be HIGH for p microseconds and then LOW for p microseconds. Frequencies for the notes obtained from The range defined below covers 2 octaves from C4 (middle C, or 261.63Hz) to B5 (987.77Hz). Feel free to modify. */ void playNote(char note, int duration, boolean sharp) {   char names[] = {     'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C', 'D', 'E', 'F', 'G', 'A', 'B'         };   int tones[] = {     1915, 1700, 1519, 1432, 1275, 1136, 1014, 956, 851, 758, 716, 636, 568, 506         };   // these are the "sharp" versions of each note e.g. the first value is for "c#"   char names_sharp[] = {     'c', 'd', 'f', 'g', 'a', 'C', 'D', 'F', 'G', 'A'         };   int tones_sharp[] = {     1804, 1607, 1351, 1204, 1073, 902, 804, 676, 602, 536         };   // play the tone corresponding to the note name   if (sharp == false) {     for (int i = 0; i < 14; i++) {       if (names[i] == note) {         playTone(tones[i], duration);       }     }   }   else {     for (int i = 0; i < 10; i++) {       if (names_sharp[i] == note) {         playTone(tones_sharp[i], duration);       }     }   } } /* Take a string representing a tune and parse it to play the notes through the piezo. Parameters: char notes[]: a string that represents the notes of the song. The grammar for parsing the string is described at the top of this file. int beatLength: changes the tempo. Smaller value -> quicker; bigger -> slower boolean loopSong: if true, the song will loop indefinitely (until you press the microswitch) */ void parseTune(char notes[], int beatLength, boolean loopSong) {   boolean play = true;   // 1 iteration of this loop == 1 note played   for (int i = 0; notes[i] != '.' && play == true; i++) { // stop iteration if '.' is the next char       if (notes[i] == ',') { // ',' signifies a rest       // Look at the number (max. 2 digits) following from the ',' to work out the duration of the rest       char len[3];       int count = 0;       while (notes[i+1] >= '0' && notes[i+1] <= '9' && count < 2) {         len[count] = notes[i+1];         count++;         i++;       }       len[count] = '\0';       int duration = atoi(len);       delay(duration * beatLength); // rest duration     }     else { // play the next note, represented by a series of characters e.g. 'c4', 'a#12'       char note = notes[i];       boolean sharp;       // if the next character is a '#' then we must make the note a sharp       if (notes[i+1] == '#') {         i++;         sharp = true;       }       else {         sharp = false;       }       // Look at the number (max. 2 digits) following from the note name to work out the note duration       char len[3];       int count = 0;       while (notes[i+1] >= '0' && notes[i+1] <= '9' && count < 2) {         len[count] = notes[i+1];         count++;         i++;       }       len[count] = '\0';       int duration = atoi(len);       playNote(note, duration * beatLength, sharp);     }     delay(beatLength / 2); // pause between notes   } } // Write your tunes in here using the grammar described at the top of this file. Can have up to 4 tunes. void song1() {   char notes[] = "d4g4g2a2g2f#2e4c4e4a4a2b2a2g2f#4d4f#4b4b2C2b2a2g4e4d2d2e4a4f#4g8,8.";   parseTune(notes, beatLength * 1.25, false); } void song2() {   char notes[] = "b4b4b8b4b4b8b4D4g6a2b12,4C4C4C6C2C4b4b4b2b2b4a4a4b4a8D8b4b4b8b4b4b8b4D4g6a2b12,4,C4C4C6C2C4b4b4b2b2D4D4C4a4g12,8.";   parseTune(notes, beatLength, false); } /**********************************************************************************************************/ void setup() {   pinMode(speakerPin, OUTPUT);   pinMode(buttonPin, INPUT);   pinMode(leds, OUTPUT);   servoleft.attach(8);   servoright.attach(7);   servoleft.write(30);   servoright.write(120);   Serial.begin(9600); } void loop() {   currentMillis = millis();   move();   song1(); } /**************************************/ void move() {   if (currentMillis - previousMillis > 50)   {     if ( val <= 60 && state == true)     {       val++;       servoleft.write(val);       val2 = map(val, 20, 60, 80, 120);       servoright.write(val2);       if (val >= 60)       {         state = false;       }     } //     if (val >= 20 && state == false)     {       val--;       servoleft.write(val);       val2 = map(val, 60, 20, 120, 80);       servoright.write(val2);       if (val <= 20)       {         state = true;       }     }//     previousMillis = currentMillis;     Serial.println(val);   } // if millis }

Posted by HavocRC 3 years ago

Two ibles tabs open, and Dead object jams browser

See the screenshot. The message below (Type error: can't access dead object) appeared in the instructables tab after I accessed a forum topic in another tab. The pop-up completely jammed my browser - I could not close the pop-up (it popped back up instantly), and I could neither close the tab nor even close the browser through normal routes (corner-X, Alt-F4), all I got was a blink of the screen, a warning tone and the pop-up back. I had to shut down and start again.

Posted by Kiteman 6 years ago

Making a Telephone Function Without a Phone Line?

I have an old telephone desk set with a DTMF keypad. I was wondering if there was a way to some how get it to function without hooking it up to a telephone line, not to call people, but to make the DTMF tones, make it ring, and maybe be able to talk into the receiver. If you want to know why I would want to do this I'll just say I'm a musician, and I'd like to be able to run the phone into my mixer and use it like as an instrument. Also, yes I've seen the instructable about how to make a telephone receiver microphone, so no need to show me.

Posted by stuarttt 9 years ago

Elta 8915 equalizer wiring diagram

Hi guys, I'm having a problem with Elta 8915 equalizer and I need help. When I hook it up on a radio and turn the power on, the lights on equalizer are on but not a single sound from it. When turned off the speakers are having a good quality tone from the radio and I can use fader on the equalizer. So, I either don't hook it up properly or it is broken. All the contacts seem fine to me. I do not have wiring diagram, and I've tried my best to do the proper wiring (there was no smoke so I guess I did a good job,haha). Is there any suggestion or the wiring diagram?

Posted by Izzy Panzer 6 years ago

I need help making a toy for my dog

My Dog only likes to play fetch with Tin cans, but they sometimes cut his lips. Firstly, I was wondering if anyone had a Idea of how to cover the can with a rubber or plastic that could withstand the heavy play and bites of a large dog . Secondly, I want it to look cool so how would you make it two toned. I'm looking for this to last a while, thats why I want it to look cool. Its bad enough when I have to take Tin cans to the park. Also I'm not that experienced in plastics/Rubber. My skills are more inclined to carpentry. So please be specific. Thanks I hope someone can Help.

Posted by milonus1 10 years ago

Blanx Customizable Action Figures

I was looking around Deviantart where I searched "custom action figures" to see what new was being posted in that area.  I came across a user who had pictures of this flesh-tone and gray colored action figure that lacked details.  When I read the description, I found out it was a new type of action figure called the Blanx Customizable Action Figure, which would allow people to come up with their own designs.  I'm not sure if anyone else has heard of it, but I figured I'd post the link here, as it may be useful to not just action figure modders, but for artists as well (in fact, according to the site, the Blanx Customizable Action Figure can be used as a sculpting armature, to which a couple of members in the user gallery have used this figure for).

Posted by CB2001 7 years ago

Self Playing Guitar/bass/BAND

Http:// I am thinking of doing one for a guitar, and after i have success with the guitar then one for a bass. and so on until i have a band. i would just need a guitar(which i have) and 144 push servos for the frets on the guitar(likely pneumatic or magnetic), 7 servos for strumming(1 per string then 1 to strum all the strings) 6 winders to go to the headstock for different tunings, 1 to flip the lead & rythm switch, enough servos for the volume and tone knobs(will vary depending on what guitar i use). I could then hook up the servos to a processor that will scan sheet music(likely a scanner optical) or listen to a program that will activate the servos. This is my new cool project. any advice is appriciated.

Posted by popeluciferthe666th 8 years ago

Binary Arduino Alarm Clock HELP!

I am currently working on THIS INSTRUCTABLE: I have had to modify the libraries to work with IDE 1.0 and newer because this was written 5 years ago. I'm using a push button momentary switch instead of the capacitive sensor for the snooze button. I've got everything working except for the Alarm/snooze. For some reason, the speaker is constantly beeping a high, then low tone, as though the snooze button is being held down, even when I completely disconnect the snooze button from the clock. Can anyone give me any ideas how to fix this problem? Here is my modified button code: void update_buttons_state() {   hour_button_state    = digitalRead(hour_button_pin);   minute_button_state  = digitalRead(minute_button_pin);   setTime_button_state = digitalRead(setTime_button_pin);   setAlarm_button_state = digitalRead(setAlarm_button_pin);   snooze_button_state = digitalRead(snooze_button);     } // "INTERNAL" VARIABLES FOR BUTTONS FUNCTION: boolean first_time_hour = true;   // these are used to make sure that the hours boolean first_time_minute = true; // and minutes only is increased once every keypress. unsigned long snooze_button_timer; // used to keep track of how long the snooze button has                                    // been held down. when the button has been held down                                    // a certain amount of time, the alarm will be turned                                    // of completely. void buttons() {   // LOW == button pressed   // HIGH == button released   // (this is because pullup resistors is used)     // Decide if we should set time or alarm:   // (this also makes the display show the alarm time)   if(setAlarm_button_state==LOW) // LOW = Set time   {     hours_p = &alarm;_hours;     minutes_p = &alarm;_minutes;   } else if(setTime_button_state==LOW) // LOW = Set Alarm   {     hours_p = &hours;     minutes_p = &minutes;   }   // If hour button is pressed, increase hours:   if(hour_button_state==LOW && first_time_hour) // only increase the hours once   {                                             // every button press.     if(*hours_p < 23)       (*hours_p)++;     else       *hours_p = 0;         first_time_hour = false;          }   else if(hour_button_state==HIGH)   {     first_time_hour = true; // reset when button is released,   }                         // so that the next press will be registerd.     // If minute button is pressed, increase minutes:   if(minute_button_state==LOW && first_time_minute) // only increase the minutes   {                                                 // once every button press.     if(*minutes_p < 59)       (*minutes_p)++;     else       *minutes_p = 0;           first_time_minute = false;   }   else if(minute_button_state==HIGH)   {     first_time_minute = true; // reset when button is released,   }                           // so that the next press will be registerd.     if(snooze_button_state==LOW)   {     if(signal_on)     {       // set the time when the alarm signal will start again,       // this will give 10 minutes snooze:       if(minutes<50)       {         snooze_off_minutes = minutes+10;         snooze_off_hours = hours;       }       else       {         snooze_off_minutes = minutes - 50;         snooze_off_hours = hours + 1;       }       snooze_on = true;       signal_on = false;     }     // if the snooze button has been held down for more than 3 seconds turn off/on the alarm     if((millis() - snooze_button_timer) > 5000)     {       if(alarm_on) // if on, turn off       {         signal_on = false;         alarm_on = false;         snooze_on = false;         // play tone so the user know the alarm turned off:, 100);       }       else if(alarm_on==false) // if off, turn on       {         alarm_on = true;         // play tone so the user know the alarm turned off:, 100);       }       //reset the snooze button timer       snooze_button_timer=millis();     }       }   else   {     //reset the snooze button timer     snooze_button_timer=millis();   } }

Posted by holidayv 4 years ago

Is there an easy way to find a short or open circuit in a car?

I am trying to find a open or short circuit that is on a wire which is in a harness with other wires, on a 1986 Mazda B2000 truck. With so many of you having expertise in electronics, I thought here would be a good place to post my question. Does anyone have any suggestions how to find this open or short-circuit?I am open to the idea of getting a short-circuit-finder. Though I am not sure what features I should look for if I decide to get one. Does anyone have any suggestions?a) Does anyone know if these work well?b) What features should I look for If I get one?c) Do you have any other on a short circuit finder? type, manufacturer, model etcBelow is a link to a site that uses a short circuit finder to find a short circuit, and has information on using one: is a link to a site that tells about how a tone generator is used to find a short circuit, in a home environment (I think this is how most short circuit finders work): found some links that seem to show that it is possible to make a signal generator and tracer, but the pages with the schematics would not load. A list of tools with links to tools and their schematics tracer (neither of these would not load 4-3-09 kept getting message "the Connection was reset."):should have schematic: the signal generator: little paranoid voice thinks this Instructable has some clues to the solution: How to prevent thefts steal your motorcycle for less than US$ 2 Thank-you in advance,

Posted by Jonque 9 years ago

What can I do with lots of Magic: The Gathering cards?

Hi there. I have several thousand Magic the gathering cards, possibly over 10k at this point, that I don't really need. I was thinking about giving my room a nice blue tone by covering the walls with them, but I don't think I have quite enough blue cards for that. So at this point I'm kind of just wondering what I COULD do with them. A nice thing about them is that I have 30-40 of many of the same cards, so if I want a large patch of the same color for some reason, it's possible. For those that don't know, Magic cards are the size of a normal playing card, but about twice as thick and have detailed fantasy art on them. Primary colors used are blue, green, red, black, and white.

Posted by Maxim2735 8 years ago

Current Problems with speakers...

Hey guys, I've uploaded some pictures of my problem. What I have here is an attempt to add bass to my speakers - I'm a newb, so this isn't going so well. The music is comeing from an iDock, and is being routed in parallel to a set of computer speakers. The right speaker has volume & tone knob, the left is simply plugged into the right. I unplugged the left speaker, took the circuitry out, and connected its input & output to a larger bass speaker - quickly was I suprised with a smoking capacitor (lol how healthy!) so... what should I do, simply add a resistor? Edit: Note the resistor (brown red red = 12k? or 1.2k?) is only in series with the LED and is not affecting the bass speaker. I am just wondering how a bass speaker could draw MORE amperage than the small speaker without any circuitry?

Posted by GreenD 8 years ago

How many steps are too many? Having trouble toning down my picture count.

I don't want to start up another "I'm not a fan of the picture layout" thread. That's why I posted this here, not in another section of the forums since my instructibles are crafty or arty and those are the types that tend to have more pictures, from what I've seen. Instead I'm trying to work within the system. Motivated to get back into it by some of the interest I've received  still getting subscribers, which warms my wittle heart. To that end, my praying mantis is finished, just need to photograph the final result. The instructions were all written just before the site switched over the picture layout though, and the process seems to require lots of pictures, I can't seem to remove enough pictures from the 'ible to make it fit with a few steps with only a few pictures in each. Wondering what peoples opinions are on the length and depth of instruction in an instructible are? Wondering if you'd rather 10 to 15 pictures in one step, with a couple paragraphs of instructions below that you'd have to scroll up and down repeatedly for, going in and out of pictures to see the picture tags so you understand what is being written, etc...OR...would you prefer to go through 3 to 5 times the number of steps with only a couple pics per page, with a single paragraph of text instructions BUT where you'd have to go through multiple steps (multiple pages) to see how a fairly simple part of the process is done? I figure I'd need to reduce the number of pictures posted in each step. Because looking at my wire octopus 'ible, it's a really hard read these days. My thoughts are 3 to 6 pictures per step, max. That leaves me with what will end up as a 30+ step 'ible for my current praying mantis 'ible. So... I'm tempted to just post up a few work in progress shots with a decent text explanation and leave it to the reader to picture the majority of it in their minds.

Posted by Thrasym 5 years ago

Sitar bridge mod (for floating-tailpiece guitars) idea

The characteristic sound of a sitar is created by a bridge that gently rolls away from the strings; this creates a buzzing timbre which quickly depletes higher overtones in the string's vibration (I could draw some diagrams if anyone's interested). This type of bridge is something I'd like to make as a removable modification for a guitar. My guitar has a "floating tailpiece" as I believe it's called, in which the strings pass beyond the bridge to the tailpiece. The segment of the strings below the bridge have no part in tone generation, and so could have an object attached to them (a piece of wood wedged between the strings, perhaps) without affecting the guitar's tone. If some object (the "clamp") were attached to the strings immediately below the bridge, another object (the "sitar bridge") could be affixed to it some minuscule distance from the vibrating portion of the strings. The sitar bridge would not make contact with the strings at rest, and so would not be a node of vibration (and not affect the strings' pitch), but when the strings are played, their vibrations would make them rattle against the sitar bridge - much like the bridge of an actual sitar. So how about it? I think it'd be an interesting and relatively simple mod that could be made to be removable and not destructive at all to the actual guitar. I unfortunately have no idea how to refine the concept any further than what's written, so I leave it up to any willing DIY-ers. It all makes sense in my head, but I may have accidentally left out some important particulars of this kind of mod, so please ask any questions you have. Because this mod relies on the strings below the bridge in a floating tailpiece guitar, I don't think it would work on most solid-bodied guitars, but if anyone can come up with a similar mod for the more common bridge type, be my guest. Also remember that the "clamp" below the bridge cannot rely on the tensile strength of the strings, as not only are they not terribly strong, their tension needs to remain intact so that the guitar can be played in tune.

Posted by Impasse 8 years ago

Help finding scholarly sources

As many of you know, I am a Global Warming skeptic. However, I am still continuing my research and I would prefer to get my information directly from scholarly sources--conference papers in particular. Unfortunately, I am finding that the HUGE amount of rhetoric surrounding the issue are thumping my normally skillful use of Google into oblivion. I have found some links to various AMS conferences, but they have been mostly unrelated topics--lightning, ocean wave angle rates, etc.What I hope to gain from reviewing related papers, is an idea of what we KNOW about climate change and what we are only guessing at, information that is terribly difficult to find on the interweb.Any scholarly links would be appreciated.And to show examples (in a different field) of what I am looking for:A list of SIGGRAPH white papers.A scholarly paper on tone matching.Much thanks,Royal

Posted by royalestel 11 years ago

please help me with my old uk phonebox modification

I have a old 1989 payphone bought at auction minus the keys I want to convert the old rotary tone dial to a pulse dial keypad and replace the coin slot to accept new coins and would like to do this without ruining the looks of the phone by having to drill out the locks and trying to find a lock of nearly the same style as they have been superseded by new better locks I purchased the coin slot and keypad from a bt approved company in the midlands but understandably both they and bt will not tell me how I can remove the coins once they are in the box incase I break into new boxes coin vaults even though the locks have changed and phone boxes these days are hardly used except for emergency calls.I am trying to put this phone into an oldie worldie village pub as a gimmick to draw in tourists to a dying pub/restaurant

Posted by msc 10 years ago

A Discussion and Breakdown of Opinions and Controversy Within The Community

So I had this dumb idea that a few of us "KI"ers, as you call us, could have a fruitful and interesting discussion based on several topics through an audio AMA-type format.  The idea is that you guys post a bunch of questions below, and we answer and elaborate as we see fit after a week or so, putting all the discussion in a nice, short 30-ish minute podcast.  If you're interested in hearing us talk about whatever, whether it be our taste in mechanics, or what happened with KI, or even how you guys feel about us, let us know below and we'll see how this goes.  Again, I aim to approach this with a semi-serious and thoughtful tone, so it's not just going to be 30 minutes of us saying "lol those ibles guys are so silly" and such nonsense. I don't expect much to come out of this, but if we have some fun or start a fluid conversation, it'll be worth it.

Posted by Mepain 4 years ago

Wanted: Instructable for Indoor Solar Chimes

I love the ingenious people on this site and am hoping some one can help me with this.  I have desperately tried to find an indoor solar chime like the one in the photo, but the manufacturer is out of business and other imitations are simply poorly made - unsteady curled metal base, only three wimpy cheap chimes, and mostly plastic. Can any creative, engineering minded soul help me out by writing an instructable for a similarly sturdy, aesthetically pleasing, (ceramic perhaps), resonating-5-toned solar chime like the one in the photo? The premise seems pretty basic - sun hits small solar panel creating vibrations which swing pendulum like mechanism which hits chimes and creates a gentle pleasing sound. I just have I would be very grateful if someone, more knowledgeable than me, would take on the challenge or at least shoot me some ideas on how this can be created!!  TIA

Posted by smiletime 5 years ago

how can I make a cricket chirping sound w/o electronics?

I'm trying to figure out a way to produce a realistic cricket chirping sound, using something mechanical (i.e., not electronic).  So far, I'm not having much luck.  The only examples I've found of what people are calling "cricket noisemakers" are either big carved wooden cricket-shaped toys with a serrated part that you rub a stick against (which doesn't sound remotely like a cricket) or the WWII metal clicker that was called a cricket, but sounds even less like one. A cork twisting in a tapered wooden hole produces a squeak, but crickets use "stridulation" which, if you slow the sound down, is actually comprised of about 6 individual tones in rapid succession.  That's a complication I'm still trying to wrap my head around. Any suggestions? Point of reference:

Posted by Bricology 2 years ago

Halloween Photo Contest Winners

Thanks to everyone for all of your awesome entries in the 2012 Instructables Photo Contest. We had over 600 entries, and our 11 judges just delivered their final evaluations. This was our biggest Halloween contest yet, and it was only successful because of each and every participant’s contribution. From everyone at Instructables, thank you so much for sharing what you’ve made. Instructables helps to set the tone for DIY Halloween costumes, and you guys all set the tone for Instructables. Keep up the great work, and I cannot wait to see what you put together in 2013. (Just 11 short months until Halloween!) This year’s first prize in the Halloween Photo Contest is Tatterhood’s Ryuk Costume. Her project was an excellent example of what we look for in a photo entry: namely, a series of great pictures that illustrate the project’s creation along with enough explanatory text that the project is reproducible to some degree. This project in particular did an excellent job of telling a story in photos and mortaring any gaps in detail with the text. Plus, it is awesome. The leather outfit, the mask, and the feathered shoulders would have each made a great project. Taken together, this was an outstanding project (even if you’re unfamiliar with the Death Note reference material.) Our second prize winners were wonderful as well. There wasn’t a terribly sharp drop-off from first prize to second prize, which speaks to the amount and quality of the work poured into each of these projects. Rexrothwell's painstakingly detailed White Walker, a TMNT group costume (with Splinter!) from wmorey37, and davisgraveyard's weeping angel monument that wouldn’t look out of place in a cemetery or on Dr. Who round out our second prizes. Third prize winners: you will each receive a mold cutting, prop polishing, versatile Dremel rotary tool to help you unseat this year’s winners in 2013. Do not be disheartened by a third place finish, since a few of the folks who won larger prizes used professional photographers, are professional prop or costume makers, or just plain spent more time or money on their entries. Final note: Consider competing with a step by step project next year, as documentation and reproducibility are important considerations when comparing excellent projects against other excellent projects.

Posted by wilgubeast 5 years ago

security system (not responding after combining ultrasonic sensor code and esp8266 code )

The base of this project is &http;:// I changed according to my uses from above links I tryed by dividing into two parts one for ultrasonic sensor and other for esp8266 they worked fine while separating ultrasonic and buzzer are working in (Tools and wifi module is working in onlt(Tools when i mix ultrasonic and buzzer nothing happening) any idea here is the code #include #include #include #include #define USE_SERIAL Serial #define trigPin 9 #define echoPin 10 #define piezoPin 8 ESP8266WiFiMulti WiFiMulti; int normalDistance; boolean triggered = false; long duration, distance; void setup() {   USE_SERIAL.begin(115200);   pinMode(trigPin, OUTPUT);   pinMode(echoPin, INPUT);   pinMode(piezoPin, OUTPUT);   long duration, distance; while (millis() < 5000) {   digitalWrite(piezoPin, HIGH);       digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); duration = pulseIn(echoPin, HIGH); distance= duration*0.034/2;         normalDistance = distance;       USE_SERIAL.print("Distance: "); USE_SERIAL.println(distance);         digitalWrite(piezoPin, LOW);    for(uint8_t t = 4; t > 0; t--) {         USE_SERIAL.printf("[SETUP] WAIT %d...\n", t);         USE_SERIAL.flush();         delay(1000); } WiFiMulti.addAP("username", "pass"); } } void loop() { digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); duration = pulseIn(echoPin, HIGH); distance= duration*0.034/2; USE_SERIAL.print("Distance: "); USE_SERIAL.println(distance); if (distance < normalDistance-5) {       triggered = true;     }     else {         triggered = false;     }     if (triggered) {     tone(piezoPin, 635);     delay(500);     tone(piezoPin, 912);     delay(250);     if(( == WL_CONNECTED)) {         HTTPClient http;         USE_SERIAL.print("[HTTP] begin...\n");                 http.begin("iftt link.........................."); //HTTP         USE_SERIAL.print("[HTTP] GET...\n");         // start connection and send HTTP header         int httpCode = http.GET();         // httpCode will be negative on error         if(httpCode > 0) {             // HTTP header has been send and Server response header has been handled             USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);             // file found at server             if(httpCode == HTTP_CODE_OK) {                 String payload = http.getString();                 USE_SERIAL.println(payload);             }         } else {             USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());         }         http.end();     }     } } any idea about whats going on Thanks Hemanth

Posted by hemanth kumar reddy 1 year ago

Time-Lapse shows the beauty of the galaxy we live in.

I recently purchased a Canon EOS DSLR.This video made it painfully obvious what I need to be doing with it!This gorgeous video is a compilation of shots taken with a Canon EOS-5D every 20 seconds over about nine hours at a star party in Fort Davis, Texas. It's a humbling sight.The Canon was equipped with a fisheye lens (an EF 15mm f/2.8 lens) and powered with an external battery to capture all that goodness. The more interesting part is the replacement anti-alias filter the photographer, William Castleman, used: The Canon's stock AA filter blocks out certain red wavelengths to achieve a "more desirable" skin tone, but if it's replaced with a filter that lets those wavelengths in, you've got yourself a camera capable of shooting a galaxy, as seen here, even if we can't see it with the naked eye.Its also great to know about the filter, I am off to google more into that now!Check it out on VimeoVia Gizmodo

Posted by gmjhowe 9 years ago

blutooth telephone

Hi people who are smarter than me! I have been searching the great Google for the past while and I cannot find something that does this. I love the portability of cellphones and i love the look an feel of landlines (you cannot beat the look of a phone on a a desk. What I want is a device that connects to my cellular telephone wirelessly and that a landline can plug into. This means that it must supply about 40 - 60 VDC to power an old phone that DOES NOT HAVE EXTERNAL POWER SUPPLY so it could operate a touch tone phone from the 80's and 90's. When I get a call on my phone I want it to ring the phone. When I pick up the handset I want it to answer the call and allow me to talk to the person. When I place a call I want to be able to pick up the handset and then dial a 10 digit number and then it place the call through my cell phone. During the call I want to be able to press a number on the landline and for it to press that number on my phones keypad. when i put the handset down i want it to hang up. Is this even possible? can it be done? let me know! Thanks! scott 

Posted by ScottB7 1 year ago