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Potentiometer Help? Answered

I am building a speaker out of two halmark music cards and i wanted to use a potentiometer to control the volume so i wouldn't have to do it on my ipod. I have build one before but did not use a potentiometer so i dont know how to wire it in. Other than the speaker im working on now and the speaker that I built before I have never built anything that involves electronics. What I need help with is what potentiometer I should get and how i should wire it into my project. Mostly I need to know how to wire it but if you could tell me what kind to get that would be great. I search high and low for about and hour but I could not find anything. I have included a diagram of all of the other speaker wiring. If you notice any problems with that also please tell me because i am sort of a noob at this. (I got a soldering iron two days ago) Thanks for the help.

Question by DBMods    |  last reply


Automatic Potentiometer

Hi!  i need and automatic potentiometer it has to works max 5v i thouhgt about that and i can make it manually but it's to big and to weird  i want to ask you a form to make  it whit electronic components or a component ho can makes it i want to make a motor acelerates and desacelerates whith a soft curve and if its posible put the time of the cycle (example 40 seconds acelerat.... and .. desaceler...."cycle" or similar) Thanks Sorry for my bad english! Thanks! 

Topic by labalavermella    |  last reply


POTENTIOMETER WITH ESC

Hello everyone!  I currently have a project in development which is lacking only one step. I am making a DIY Electric skateboard powered by a Arduino UNO board. I have some leds in the back working fine, the esc and motor work when I adjust the delay to 1300 miliseconds.. But my problem is to control the esc and motor via de potenciometer. Right now my potenciometer only reads me the values from 0-1023 but nothing happens. I have a map in my code but nothing is moving when using the potentiometer. Can someone help me out to make the potenciometer work? Here is the link to the instructables page where I have all the materials I used and also the code! https://www.instructables.com/id/DIY-ARDUINO-SKATEBOARD/ Thanks in advance!!

Topic by MauroGB    |  last reply


Potentiometer for 20v??

Hello! I am trying to build a bench power supply from a laptop power supply and i need a potentiometer capable to handle 0-20v. I have tried many times with different potentiometers but they all start smoking and later starts burning :( i don't know that much about elektroniks circuits so be gentle :) Please help me!

Topic by WaNa_Cookie    |  last reply


Potentiometer help

Hello,I'm new here and pretty new to home audio/electronics projects so please bear with me here.I created my first clock amp a while ago using a Minty Amp kit, an Ikea alarm clock and some other bits and bobs. Here are some images:frontbackgutsI failed to take progress pics so couldn't create an instructable for the project but I plan to do that with my next one (I've had a lot of interest with people actually asking to have them made to order - which Mr Minty Amps, Bob Hickman, assures me is cool). Anyway, so I've ordered the parts to make another clock amp but decided to get some extra bits from Maplin.co.uk this time. In teh first amp I used a 250k guitar potentiometer for the volume but it's not sensitive enough and really only has three settings (full, quiet and silent). So, this time I ordered this 1k pot from Maplin. When the pot arrived it has a 50mm shaft which is too long for my project. I assume I can just trim the shaft down so long as I'm careful since it's only plastic. Is that right?Also, because it's not a guitar pot, the shaft is smooth and so the standard control knobs I have will not fit it. Does anyone know of a (cheap) type of control knob that will fit such a pot? I really don't want to have to glue a knob on there.Thanks for your help.

Topic by clockamps    |  last reply


Potentiometer Specs?

Hey, I just found a pot from some old electronic, and unsoldered it. The only numbers it has on it is B50k. So I know it's a 50k pot, but what about the other stuff? How can I know the max voltage, how can I know the max amount of amps it can handle before sizzling? Thanks!

Question by HavocRC    |  last reply


Vintage Potentiometer to digital Potentiometer problems

I have modify a vintage wooded radio into a digital amp with bluetooth. It work great, but since I wanted to have the outside look I had no choices but to hack the 20k potentiometer on the digital amp (lepi 30$) to use the original Potentiometer.. the vintage one. I'm looking to find a way I can fix this Potentiometer so it would reach the 20k. The Potentiometer on the Lepi circuit board is a b20k for sure, but I don't know about the vintage one, there no info written on it. it's 2 questions for one thing, fix this volume so it won't blowout the speakers.   1- how to fix this ? I believe a resistor should do the job, but 'how much resistance needed? 2- if this is a resistor, well how do I solder it ? (6 wires, which one?) Any help would be greatly appreciated!

Question by sebdub    |  last reply


Slide potentiometer vs Round potentiometer

If i want to swap a potentiometer with a Slide potentiometer what are things i need to consider/match

Question by dansorce    |  last reply


LED's, Resistors, and Potentiometers

I"m having some trouble with my LED and pot. My LED is a white 2.1v / 30mA My power source is 2 AAA batteries in series at 3v my pot says 500K on the back and three leads labeled 1, 2, 3 When my pot is at the off position, my LED is lit up perfect. but when I slightly turn the dial my LED starts to burn out and turns bright orange, and if I turn the dial further (Or let it sit for a minute) my LED turns bright red. I know that's ruining the LED... But what I'm dying to figure out is how do I know what resistors I would need to use with the pot, What's the math?

Topic by surlistyc    |  last reply


Hollow shafted potentiometer?

Hi everyone,  I have a project I'm working on which has two halves that are connected using a potentiometer as the axis, resulting in the two being able to twist, changing the resistance of the potentiometer.  The problem I have is that the battery is in one half and the circuit is in the other half.  I have to somehow get the power to the circuit, but still have the pieces still be able to rotate.  I can't have the wires just sticking out of the side because it has to twist, and that would look horrible.  My first thought was to drill a small hole through the shaft of the potentiometer, so that I could run the wires through that, but when I tried to do that, it turned out to be a lot harder than I expected and I now have a busted potentiometer.  I would really like to avoid slip rings of any kind, as they would be exposed to the elements.  Does anyone have any ideas, or any advice on how to drill a nice hole through a steel rod lengthwise?  Ideally I would drill the hole, but if that's too difficult, I'll try whatever. Thanks ~Dudes

Topic by dudes    |  last reply


Dimming Leds and Potentiometers

Looking for a formula; I have a 24v 1.7 amp power supply ( http://www.allelectronics.com/make-a-store/item/PS-2417/24VDC-1.7A-POWER-SUPPLY/1.html ) to light 2 - 24v led strips ( http://www.allelectronics.com/make-a-store/item/LBR-24/24-WHITE-LED-LIGHT-STRIP-24VDC/1.html ). I want to be able to dim the led's from full power to completely off, but don't know how to calculate what size of potentiometer would give me the right ratio for dimming. IE, I don't want the LEDs to be completely off when the pot is only halfway turned. The urls are links to the exact products I purchased. Also, the power supply seems kind of large, and I still have to enclose it, so if anybody knows of a better and cheap path to get 24v that involves a little less potential for death, I'm all ears. Thanks!

Topic by bctour7    |  last reply


digital potentiometer pid?

Hello, i have digital potintiometer u/d fgive you 100 step for 10k ohm so 10k for 100 step, i use it as outpu of pid control that read the distance and set point of required distance and make p and i and d equation based on differance and summation i want to use that pid to altitude contol of helicopter ,the resistor that i change as output is connected to throttle when i increase to max(5k) it stop and min 1k it go ?max speed so  this work   code arduino **/ #include #include SoftwareSerial mySerial(52, 9,true); // RX, TX int f=0; char *buffer; byte x; char array[27]; int counter=0; unsigned char r; int p=0; int last; int error=0; int wew; int required ; int kpipo; int n; DigiPot pot(22,3,24); void setup() {    Serial.begin(9600);   mySerial.begin(9600); } void reading(){   mySerial.println(1); while (mySerial.available()) {    x= mySerial.readBytes(buffer,1);    if(*buffer==0x52){    x= mySerial.readBytes(buffer,1);    array[0]=*buffer;    x= mySerial.readBytes(buffer,1);    array[1]=*buffer;    x= mySerial.readBytes(buffer,1);    array[2]=*buffer;    } } delayMicroseconds(220); } void loop() {     if (f==0){   delay(600);}   f=1; reading();   int Final_inch=(array[0]-48)*100 + (array[1]-48)*10 +(array[2]-48) ;   float Final_cm=Final_inch*2.54;     Serial.print(Final_inch);   Serial.println(" Inch ");   //Serial.print(Final_cm);   //Serial.println(" cm "); required =29; error = required - Final_inch; //Serial.print(error); //Integral = Integral + Error; // accumulate the error integral //} //else { // Integral=0; // zero it if out of bounds //} kpipo=1; p =  (error * kpipo); // calc proportional term // I = //Integral*kI; // integral term //int D = (Last-Actual)*.1; // derivative term wew = (error/2) ;// scale Drive to be in the range 0-99 Serial.print(wew);//(wew) if (abs(wew)>400){    wew=0;} if ( wew >99) {  wew=99; } if (wew <-99) {  wew=-99; } n=abs(wew); if (wew < 0){ // Check which direction to go.     pot.increase(n);     delay(500);   } else { // depending on the sign of Error     pot.decrease(n);     delay(500); } last = Final_inch; // save current value for next time }

Question by britich    |  last reply


3 pin potentiometer

I want to know if there is such a thing as a plastic connector where you can “plug in” a 3 prong potentiometer without having to solder them to wire. I am connection a 3 wire connection from my mc-60 power control board to a 5k potentiometer. It would be nice if there was some type plastic(or other) connector that you could plug in the potentiometer without having to solder the wire to the prongs. Thanks zetuskid

Question by zetuskid    |  last reply


How to replace a potentiometer?

There is a potentiometer on my $500+ vintage guitar pedal that i recently broke off. Any suggestions to glueing it or figuring out a way to put it back on? The knob is the only part that is off and i still have the knob.

Question by octopuscabbage    |  last reply


4 Potentiometers with Arduino? Answered

Hey, I'm not understanding something here.  If I hook up a pot (left 9v, middle A0, right GND), I get a varying voltage into pin A0 on Arduino. Then Arduino converts this into whatever. Well when I hooked up 4 potentiometers parallel to the same battery, and had them on pins A0-A3, none of the pots worked. Whenever I turned one pot, it would change the value for all the others (i was using serial monitor). How do I correctly hook up four pots to Arduino?

Question by HavocRC    |  last reply


RGB Potentiometer help!

Hey guys and girls, I've got a question! I've got 3 voltage regulators set up in parallel, wired to output 3.27V @ an amperage that I don't know (for some reason I can't get a reading on my e-meter) Anyway, The outputs from those 3 regulators are going to 3 pots, which in turn go to a set of 3 LEDs, 9 in total (3R 3G and 3B). My problem is that those pots have a max resistance of 2k ohms, and that the LEDs aren't shutting off when the resistance is maxed out. Can you guys find a way to make the LEDs shut off, yet still go on at full blast when the Pots are open? Thanks, -Josh

Topic by T3h_Muffinator    |  last reply


Potentiometer knob collet work??

I have a 6.35mm smooth shaft Potentiometer and looking for a knob to go onto it. I've seen the set/grub screw type, i get how they work but worried about slipping. Also seen the collet type but not to sure how they clench down on the shaft. The shaft isn't threaded, as just a groove running along the top of it. Would it work like a conventional collet from say a dremmel tool?   

Topic by JonathanM221    |  last reply


(SOLVED) Mounting Slide Potentiometers

I need help for a project I am soon to begin work on ('ible coming soon). It will involve several switches and potentiometers mounted on a piece of hardboard. The switches and rotary potentiometers I have all have washers (or whatever you call the hexagonal things with screw-like threads on the inside) to secure them in place. The slide potentiometers don't. My question is this: How would I mount the slide potentiometers? Thanks in advance, ~H4ZZ

Topic by __DELETED__    |  last reply


arduino control of digital potentiometer

Is it possible to use my new Ardy board to control a 1-wire potentiometer that will, in turn, control the pwm output for a high-power LED?The POT is here. The lights are REBELS @ 700mA.THe POT will be run in "non-parasitic" layout.

Topic by Tweac-it    |  last reply


How to solder potentiometer to speaker? Answered

Hi,the speaker for my alarm system is too loud, so i soldered this adjustable resistor (that i plucked out from my headset) on to the speaker. but somehow, the adjustable resistor only works as a resistor, i cant use it to control the volume.how can i solder it so that it works ?and btw potentiometer = adjustable resistor ?thanks

Question by fujiapple    |  last reply


Rotary potentiometer to pulse output.

Hello everyone, I'm having a challenge!I'm working on a code for my Arduino UNO.In this project, I will be using a rotary potentiometer to emit a keyboard signal for a simulation. when the potentiometer is being rotated I want to change the speed in the simulation, this normally works with a single keypress. So when it is rotated, the output I want is only ONE press when rotated a certain value. I want the Arduino to give a single pulse when the variable of the analog input has a certain change in value.Example: If the value changes from 0 to 1, I want to have ONE signal pulse to use as a keyboard signal.Example: if the value changes from 7 to 6, I want to have ONE signal pulse to use as a keyboard signal.I hope you can help me with this :)This is the code i use to separate the value into 30 units instead of 1023:const int analogInPin = A0; // Analog input pin that the potentiometer is attached toint sensorValue = 0; // value read from the pot int outputValue = 0; // value outputvoid setup() { // initialize serial communications at 9600 bps: Serial.begin(9600); }void loop() {// read the analog in value: sensorValue = analogRead(analogInPin); // map it to the range of the analog out: outputValue = map(sensorValue, 0, 1023, 0, 30); // change the analog out value:// print the results to the Serial Monitor: Serial.print("sensor = "); Serial.print(sensorValue); Serial.print("\t output = "); Serial.println(outputValue);delay(2); }

Question by Levincible    |  last reply


best price for trimming potentiometer

Elecsound can offer almost full range of lead type cermet Trimmer Potentiometers 3296 9mm Square Multi-Turn Trimmer Potentiometers 3006 Rectangular Multi-Turn Trimmer Potentiometers 3266 6mm Square Multi-Turn Trimmer Potentiometers 3269 6mm Square Multi-Turn Trimmer Potentiometers 3323 6mm Square Single-Turn Trimmer Potentiometers 3362 6mm Square Single-Turn Trimmer Potentiometers 3386 9mm Square Single-Turn Trimmer Potentiometers 3329 Round Single-Turn Trimmer Potentiometers For above items,we can have the competive price in the market,and fast delivery,if you need any of them,pls contact with us freely by email.mollie@elecsound.cn

Topic by elecsound33  



What audio potentiometer to use?

I am building small Bluetooth speakers for Christmas presents. I am using a 5v 2*3w Bluetooth Amplifier with a PAM8403 chip. I am wanting to add a dual potentiometer to control the output of the speaker, not the power going into the amplifier. I am going to use a logarithmic potentiometer but I cannot figure out the resistance I am needing. I have found A5k and A10k resistors, would these work for the project? Is there an equation or guide that would help me out?

Question by MitchellD30    |  last reply


how to replace a potentiometer by a photocell ? ?

In the diagram, two pins of the pot are connected to resistors on each side and the third (variable) to the power source. That makes three connections and the photocell has only two!?

Question by marcia09    |  last reply


Potentiometer to control DC motor speed

I have a 12 volt fan in my RV. It has a 1.6 amp DC motor. Would a 2 watt, 350 ohm potentiometer be suitable to use as a variable speed control? If not, what potentiometer would I need?

Question by gaugeguy    |  last reply


Potentiometer and motor isn't working properly

Hello, I'm fairly new to electronics and i am currently working on project involving an adjustable motor. basically the circuit is just a nine volt battery going through a potentiometer and into a 6-9 volt motor. however the motor only spins when the potentiometer is turned to max. the potentiometer is a 10k.

Topic by kanp1    |  last reply


Bench power supply potentiometer for 20v?

Hello! I am trying to build a bench power supply from a laptop power supply and i need a potentiometer capable to handle 0-20v. I have tried many times with different potentiometers but they all start smoking and later starts burning :( i don't know that much about elektroniks circuits so be gentle :) Please help me!

Question by WaNa_Cookie    |  last reply


10-15 AMPs w/ potentiometer.

So, as a chemist I thought it would be fun to save some $ by making my own hot plate & magnetic stirrer. I am using Thermoelectric cooling device (TEC) to heat my stirrer, and a small DC motor to stir. Here's the problem - if you've ever taken highschool chemistry you will know that a hot plate with a stirrer has a potentiometer for Temp & Stirring speed - I'd like to do the same! Problem: the TEC takes anywhere from 5-20 amps in operation @ 12 volts DC. Adding a potetiometer to this in parallel is out of the question - I can't fine a potentiometer that can handle greater than 2 watts. ( i may just be looking in the wrong place)... So.. all in all I'm looking for nearly 140-170 watts of power for my heating plate. (The motor will be using much less, almost negligble to the heating plate) So, if I can't put a potentiometer in series for power regulation, how can I get my temperature to vary? If this is going to require a circuit board, I may need some help with a design :)

Topic by GreenD    |  last reply


How to read values on preset potentiometer? Answered

Recently my multimeter died in a coilgun experiment. now i need to make some 555 circuits out of scraps. when i need some preset pot. i don't know their values. for e.g a preset pot has a reading of 103 on it(not a capacitor). How can i know its reading. is there anything like capacitor readings in it. 

Question by ARJOON    |  last reply


Help with dc motor and potentiometer! Thanks

OK so my dad has this old turntable and I got him some cool records for Christmas and I tested them out and it sounded good but now the motor isn't working, its kinda temperamental. I know the motor works because i tested it separately with a 9V, i guess the wiring is just kinda old and faulty. Any way my idea is to put the motor on its own independent circuit and adjust its speed with a potentiometer. Its one of those small DC motors 12V. I was thinking about hooking it up to a battery pack and a pot to adjust the rpm, I could mount the knob on the face of the player and adjust it until the music sounds just right. Then i could make a mark for 33 rpm and 45 rpm so he can change records with just a twist of the knob. Or slow them down and speed them up just for fun lol. How can I wire all this? I did some googling and tried with a couple pots and motors I've harvested over the years but all the pots seem to smoke and sizzle with only a 9V battery. Do I need a different pot? Please help! thanks  

Topic by sticitodaman    |  last reply


Potentiometer not working after connected to wires

Hi, I'm fairly new to electronics and I'm trying to learn it with my Arduino. Recently I have been working on a project that involves 4 potentiometer(pot). I'm using one 1k pot and 3 10k pot. The pot is used to send signals to the analog inputs of the arduino. To test the pots I used a simple serial.println program that sends the value of the pot from 0 - 1023. When I connect the pot through its 3 pins directly to the breadboard, all of them work perfectly fine and gives me a stable value as I turn the pot. However, when I soldered three wires to them each, 2 of them work and 2 of them didnt. The 1k and one of the 10k pot didnt work. When I connected it through its wires, the values it gave kept jumping even when I'm not turning the knob and sometimes it will just stay one value when I'm turning it or not. Why is this happening? Did I overheat the pot when soldering? I took some new pots and tested them again through the pins directly and it worked perfectly fine. But when I soldered the wires to it, this time the 10k worked fine and the 1k didnt work. It gave the same problem as the ones before. Please help me with this problem. I have attached the pictures of the pots that didn't work. Please help me check if my soldering is anything wrong. I have checked online couldn't fine anyone experiencing the same problem. TQ! 

Topic by KhayhenS    |  last reply


How do you choose a potentiometer? Answered

I'm trying to use a potentiometer as a variable resistor does, how do I determine the rating for the Pot?

Question by joeAMERICA    |  last reply


how to connect a sensor to act as a potentiometer?

 I deed to connect distance measuring sensors with my keyboards potentiometers so they become midi volume controls

Question by nikaki    |  last reply


Removing potentiometer and making a direct connection?

Want to remove those potentiometer ir order to attach a RsbryPie 3 heatsink to make the IC cool. IT'S a PAM8406,and on it's max load it's getting really hot. So have to apply a heatsink. So is there any​ way to remove those potentiometer and connect those line directly, i mean I'm newbie in this thing. So need some help, thanks in advance.

Question by Sayan_trex    |  last reply


value of a potentiometer to attenuate amp inputs?

I have three 'sources' of stereo audio fed into my NAD amplifier. Each source has a different (non-adjustable) output level. So when I switch each one at the Amp input selector the output volume changes significantly. I just want to attenuate the two highest outputs with a trimpot at source before inputting to the amp, so that each are roughly at the same level. Any idea what value trimpots I can use?

Question by barrykap    |  last reply


feedback from potentiometer to aurduino to slow?

So this is the code i use but i would like it to be reading the value of the potentiometer after each number appears on the 7 digit display  i put in the serial read to tell if my poteniometer was working correctly and just because it is fun to watch the numbers fly by. const int l1=2; const int l2=3; const int l3=4; const int l4=5; const int l5=6; const int l6=7; const int l7=8; void setup () {   Serial.begin(9600);   pinMode(l1, OUTPUT);   pinMode(l2, OUTPUT);   pinMode(l3, OUTPUT);   pinMode(l4, OUTPUT);   pinMode(l5, OUTPUT);   pinMode(l6, OUTPUT);   pinMode(l7, OUTPUT);   }   void loop() {     int dt = analogRead(A0);     delay(1);     Serial.println(dt);      digitalWrite(l5, HIGH);      digitalWrite(l3, HIGH);      delay(dt);      digitalWrite(l5, LOW);      digitalWrite(l3, LOW);      delay(dt);      digitalWrite(l6,HIGH);       digitalWrite(l5,HIGH);       digitalWrite(l4,HIGH);       digitalWrite(l1,HIGH);       digitalWrite(l2,HIGH);      delay(dt);        digitalWrite(l6,LOW);       digitalWrite(l5,LOW);       digitalWrite(l4,LOW);       digitalWrite(l1,LOW);       digitalWrite(l2,LOW);        delay(dt);        digitalWrite(l6, HIGH);        digitalWrite(l5, HIGH);        digitalWrite(l4, HIGH);        digitalWrite(l3, HIGH);        digitalWrite(l2, HIGH);        delay(dt);        digitalWrite(l6, LOW);        digitalWrite(l5, LOW);        digitalWrite(l4, LOW);        digitalWrite(l3, LOW);        digitalWrite(l2, LOW);        delay(dt);        digitalWrite(l7, HIGH);        digitalWrite(l4, HIGH);        digitalWrite(l5, HIGH);         digitalWrite(l3, HIGH);         delay(dt);        digitalWrite(l7, LOW);        digitalWrite(l4, LOW);        digitalWrite(l5, LOW);         digitalWrite(l3, LOW);         delay(dt);        digitalWrite(l6, HIGH);        digitalWrite(l7, HIGH);        digitalWrite(l4, HIGH);        digitalWrite(l3, HIGH);        digitalWrite(l2, HIGH);        delay(dt);        digitalWrite(l6, LOW);        digitalWrite(l7, LOW);        digitalWrite(l4, LOW);        digitalWrite(l3, LOW);        digitalWrite(l2, LOW);        delay(dt);        digitalWrite(l6, HIGH);        digitalWrite(l7, HIGH);        digitalWrite(l4, HIGH);        digitalWrite(l1, HIGH);        digitalWrite(l2, HIGH);        digitalWrite(l3, HIGH);        delay(dt);        digitalWrite(l6, LOW);        digitalWrite(l7, LOW);        digitalWrite(l4, LOW);        digitalWrite(l1, LOW);        digitalWrite(l2, LOW);        digitalWrite(l3, LOW);        delay(dt);        digitalWrite(l6, HIGH);        digitalWrite(l5, HIGH);        digitalWrite(l3, HIGH);        delay(dt);        digitalWrite(l6, LOW);        digitalWrite(l5, LOW);        digitalWrite(l3, LOW);        delay(dt);        digitalWrite(l1, HIGH);        digitalWrite(l2, HIGH);        digitalWrite(l3, HIGH);        digitalWrite(l4, HIGH);        digitalWrite(l5, HIGH);        digitalWrite(l6, HIGH);        digitalWrite(l7, HIGH);        delay(dt);        digitalWrite(l1, LOW);        digitalWrite(l2, LOW);        digitalWrite(l3, LOW);        digitalWrite(l4, LOW);        digitalWrite(l5, LOW);        digitalWrite(l6, LOW);        digitalWrite(l7, LOW);        delay(dt);   }

Question by harry88    |  last reply


Potentiometer/Variable resistor with AC advice

I'm a computer store tech who knows how to solder some(but DC stuff only) and who also enjoys cooking, so my ? is: What's the best choice of pot. for use with US household current to actually control the cooking temp of my hotplate? End result is to eliminate the annoying "heat spikes" you get due to lack of a pot. in the design, IE literally everything sold these days turns on at full current/temp until it reaches X temp, basically it's just temporally defined by how far you turn the knob, and your pancakes wind up crispy black around the edges and gooey in the middle  instead of golden brown and amazing all over. I want it to turn on at X current until X temp (like electric frypans/burners did if you're old enough to remember.) All I need to do ( I think) is add a pot/VR into my burner's element  "line" the right way, it already shuts off at X temp just fine. Incidentally, that's the "click" you hear when any home electric cooking device (sold in North America, at least) hits temp or turns on, the temp. control switch thingee connecting. It's NOT a VR/pot, just a pair of electrodes JUST barely touching strapped very tightly to some ceramic discs. It uses thermal expansion of the discs/electrodes to make things just a tiny bit bigger and separate the tiny little electrode spoons  But all that boring geekspeek affects in this configuration as basically just temporal heating, IE no reduction of the amount of heat in my frypan, just the cooking time. Science says if I reduce the amount of electrons flowing thru it just slightly as well,  it'll be colder but still hot and still shut off when it's hot enough. A pot/VR wired in the right way will do exactly that, won't it? After some research I'm thinking something like a 30-50K "B"-taper pot. wired with 2 of 3 traces (https://www.instructables.com/id/Wire-a-Potentiometer-as-a-Variable-Resistor/), I'm looking for a "broad" response range while turning with a tight  "pinch" effect at low end for amazing banana-brown-sugar-pinch-of-nutmeg pancakes with coffee on the tiny balcony/fire escape in the morning but I have no idea how the numbers work for AC currents. Does 120vAC mean a different pot or a diff config/approach altogether? Or should I be looking into AC variable resistors, instead? I know an awful lot about "base" science, enough to get me this far, right, but AC throws me for a loop a lot, and there's a gap in my knowledge/experience, between the basic stuff and how it applies to stuff like my application, I don't get a lot of the numbers/formulas and how to use them.  A VR would the ideal tool here, but they are hard to get in the right form with the electrical qualities I need, whereas pots are usually "turning switches", right?

Topic by MattH68    |  last reply


Where can I find a digital potentiometer?

I need a digital potentiometer for an upcoming arduino project. does anyone know where I could salvage one?

Question by bravoechonovember1    |  last reply


how can i set speeds with a potentiometer? Answered

Hi there, Im busy building a metronome to fit a machine im altering, (the board was totally fried and rusted through)  which also has a 6volt motor that spins in the front. I managed to find a potentiometer to control the speed of the motor and the metronome, but need to have set speeds on both of them. Is there anything that i can adapt to the potentiometers like a ratchet type system ? something maybe similar to a rotary switch that u click up and down? Im pretty new to all this, any help would be greatly appreciated. MGF

Question by MrGreenFingers    |  last reply


No, that doesnt look right... Potentiometer Expert Needed!

Hi All! My brother and I are building an e-bike and we THINK we know how to attach a throttle, but it might blow up the battery... if worse comes to worse then we have a toggle button we can install but it's not really ideal. I've attached a circuit diagram below of how everything goes together, but this is my thinking; With nobody touching the throttle, in my circuit, wont i have a current flowing from the battery anode via the potentiometer straight back into the battery cathode? This results in a huge waste of energy doesnt it? And the battery would drain even when the bike is stored in a hallway overnight.  So, does anybody know if this circuit will work? i need it to take energy from the battery ONLY when active.

Topic by Tsimbilakis    |  last reply


which potentiometer to use for time lapse motor

I was looking at a camera slider and this motor for a time lapse slider: http://www.amazon.com/gp/product/B00436ULLA/ref=ox_sc_act_title_6?ie=UTF8&smid;=AUUK2J4ODEV5F I read somewhere online that someone used a rotisserie motor and hooked it up to a camera slider for a time lapse of about 40 minutes, but if I wanted to make the motor move even slower for a longer time lapse, can I hook up a potentiometer somewhere in the rotisserie motor? If so, what type of potentiometer should I get? Would this work: http://www.amazon.com/Parts-Express-10K-Ohm-Potentiometer/dp/B0002KRE20/ref=sr_1_1?s=industrial&ie;=UTF8&qid;=1355018144&sr;=1-1&keywords;=potentiometer

Topic by dylanp1936    |  last reply


Can I replace an rc ESC with a potentiometer? Answered

I want to use an RC motor for something wired instead of wireless and I was wondering if I could replace the ESC that needed a reciever with a potentiometer hooked right up to a battery. If so, where could I get a potentiometer big enough to let the high current through? Im planning on doing this with a 7.2V 540 size brushed motor.

Question by Electroinnovation    |  last reply


Help to change the potentiometer of a Voltage Regulator Module Answered

I get a Voltage Regulator Module but the potentiometer of 10K has a small rash between 5V-14V and I hope to can change it with another one of 1K.

Question by gino4814    |  last reply


How to determine what size Audio Potentiometer is needed? Answered

Second attempt to get this question to publish.....sigh... In a small project with approximately (1/4 watt) .25 watt audio output into an 8 ohm speaker, what size Audio (I assume non-linear for audio) Potentiometer should I purchase? I tried a 10k but either I got a Linear (from what I've read) or 10k is too large. When adjusting to volume, I get nothing for most of the turn and then I get all of the volume. I can adjust to the volume I need, but it's very oversenitive. I would like it to gradually adjust the volume. Thanks

Question by keydogstony    |  last reply


How to use a potentiometer with this treadmill motor and speed controller?

Hi everyone I found this forum after doing a lot of searching on controlling the speed on a treadmill motor without using the big bulky digital display unit that sits on top of the treadmill. I bought a really nice Nordic Track for 10 dollars on Craigslist and I thought I would be able to figure out how to do this but apparently I was wrong. I have seen a lot of material regarding the MC-60 speed controller unit but nothing about the speed controller that came on the treadmill that I bought which was the MC-2100 Rev B. I will attach a couple of pictures of the board and specifically the wires coming from the display unit that go into the board. I have a 5k pot but I really dont know what to do with it and I am afraid to just start experimenting because I dont want to burn up the motor or the board. I would be happy to post any other pictures or add any other information that might be of help if anyone asks for it. Of course I would like to turn this little project into a lathe if I can ever get everything sorted out. btw the motor is a 2.25 hp cont duty. If the potentiometer wont work, I would love to hear about other ideas to be able to control the speed using this board and motor. Thanks everyone

Topic by wilsocn  


Would this LED idea work?

Hello, I was thinking about this concept all day today, in which two potentiometers could vary the voltages to 2 of the 3 legs on a biocolored LED, thus being able to produce many different colors. I figure that I could hook up 3 volts, then (in parallel) hook up the two potentiometers to two of the leeds off the LED, the third being the ground. I'm not exactly an electronics guru, (and I hope that I had my vocabulary right in my explanation), but would this work? Also, where can I get some bicolor LED and potentiometers with knobs?

Topic by Jackhole    |  last reply


Help on getting a softpot?

Can I get one on the original creator's site or do I have to order a $20 one from another site? Please help!

Question by ikestarm17  


How can i get reading from a potentiometer on a computer?

A Potentiometer, like the one in the picture I want to be able to get the reading of that on the computer...like numbers from 0 to 255(or whatever) Maybe through the serial post,if there is an instructable for this show me if not then tell me how

Question by ReCreate    |  last reply


Is there a proper way to mount a potentiometer to a perforated circuit board?

I would like to attach my potentiometer directly to my perforated PCB, and I was wondering if there is a correct way to do this. I was thinking it has something to do with the tabs.  I know I can just solder wires to it, and then solder those to the board, but I would rather not have it hanging loose. My pot looks exactly like this: http://angela.com/images/products/detail/370430015798.jpg

Question by erikp    |  last reply