# COMMUNITY

### How to build a smoker temp control system like the bbq guru and such?

I would like to build something to keep my wood fired smoker at a constant temp by a forced air fan and dont want to spend 300 for a guru1

### Temp controller

I need to activate a garage door opener  with temp control. Opener uses momentary switches   There is a solarium on the out side of my shop garage door, When the temp between the door and the solarium reaches +/- 90 degrees  the door would open and +/-60 degrees the door would shut. Because the opener needs momentary contacts a regular thermostat  will not work. Any ideas would be greatly appreciated..

Posted by mcsxr2 5 years ago

### Can't UNPUBLISH

I unpublished my instructable https://www.instructables.com/id/DIY-natural-gas-generator-convertir-de-nafta-a-ga/ but it remains in the page. I went to RECENT and go back thru Jan 29, and still there it is. What can I do? I want to remove it, at least temporarily, meanwhile I can not to operate under load the generator.

Posted by rimar2000 5 years ago

### How to show 3 different temperatures using 3 LEDs connected to a ATtiny85?

Hi people I am trying to build a temperature sensor using 3 LEDs. The aim is to have them come on at specific temperatures. This is for my motorcycle ride to work this coming winter. I want to know when the temp goes below 8c down to 5c from 5c down to 0c then below. I have managed to do this via a arduino board & a LM35 sensor and 3 LEDs. But I cant get this to work on the ATtiny85 chip. Below is the code I wrote for this on the arduino. Any help or different program would be of great. *my first attempt at a temp warning light need it to come on when temp lower than 5deg celsius */ int tempPin = A1; int led01 = 8; int led02 = 9; int led03 = 10; int tempMax = 28; int tempMid = 27; int tempMin = 5; int temp; void setup() {   Serial.begin(9600);     pinMode (led01, OUTPUT);   pinMode (led02, OUTPUT);   pinMode (led03, OUTPUT);   pinMode (tempPin, INPUT); }     void loop() {      temp = analogRead(tempPin);      temp = temp * 0.48828125;     Serial.print("TEMPRATURE = ");   Serial.print(temp);   Serial.print("*C");   Serial.println();   delay(1000);   if (temp > tempMax){   digitalWrite(led01, HIGH);   digitalWrite(led02, LOW);   digitalWrite(led02, LOW);   } if (temp   digitalWrite(led01, LOW);   digitalWrite(led02, HIGH);   digitalWrite(led02, LOW);   } if (temp   digitalWrite(led01, LOW);   digitalWrite(led02, LOW);   digitalWrite(led02, LOW); }}

### temperature gauge ?

Where  can I get a replacement spring type outdoor temperature gauge?

Asked by ssivels 1 year ago

### Raspberry Pi PC temp checker

Hello forum, I'm planning on buying a raspberry Pi this week. I know a couple programming languages, but only the basics. I've had this idea for quite a while: Connect multiple thermal sensors to the Pi, and then connect the Pi to my old Android cellphone (Nexus 2), and mount the phone to my PC case, so I get read outs for the PC components (CPU, VGA, PSU, HDD, and so on). Can someone help me, and explain how I can do this? I see it as a fun hobby to get into programming, and also reuse a cell phone, so I don't throw it away.

Posted by GeorgeK31 2 years ago

### What is instructables page/ picture limit? Answered

I had trouble uploading a lot of photos and was wondering if there is a picture limit? Is there a page limit for instructables? Why doesn't spell check work when I hit spell check?  Thanks in advance.

Asked by sunshiine 7 years ago

### PVC pipe at low temperatures

I have a question for spudgunners and other people who know about PVC. I've heard that PVC becomes bitter at low temperatures, so you shouldn't expose your spudgun to low temperature, but is it okay to leave it out in the cold and then warm it back up for use later? Does that affect the strength of the PVC? I have a problem storing some PVC in an heated environment during the winter.

Posted by starwing123 9 years ago

### Temporary Log Off?

Hello, It seems that every time I try to view this (and ONLY this) instructable, my account is temporarily logged off, leaving me unable to comment, rate, or even favorite the post. (and it's a great share too, just what I was looking for!) I've notified the author of this as well, who also seems to be having trouble with their image tags. Could anybody please look into this? I'd hate for such a useful post to die in obscurity. Thank you... -rhoddity [link] https://www.instructables.com/id/Custom-Switch-Panel-for-a-Flight-Simulator/

Posted by rhoddity 7 years ago

### I need an arduino temperature and humidity sensor WITHOUT Wifly

Hi all, I am looking to make an arduino temperature and humidity sensor with an onboard display. I am fairly new to arduino but do have electronics experience. I am looking to just look at the thing and be able to read the temperature and humidity without having to go into the other room and kick someone off of the computer. I currently have an arduino uno, a RHT03 Humidity and Temperature Sensor, several 7 segment displays, enough LEDs to make a led matrix or clock type setup, and a Nokia 5110 graphic LCD with arduino board (which I could remove if needed) found at https://www.sparkfun.com/products/10773  Any help would be greatly appreciated. Thank you all. Professorred

Posted by professorred 5 years ago

Do i set the temp at 210degF (boiling point 212degF) or adjust temp to 173degF? I know 173 & 212degF points on my stove from previoius runs.  How cold does the temp of the condenser need to be?

Asked by witherspoon520 8 years ago

### Is there any free software to tell me the temperature of my laptop?

So my brother sold me his old broken laptop for \$7 in quarters! (What a steal right?) So I scrapped the speakers, 2 sticks of RAM, USB ports, a cooling fan, LCD screen, a hard drive, and a diode. So I took the fan and wired it to a USB cable to have a cooling fan under my laptop since it usually runs pretty hot, and now it's nice and cool. Is there a widget or free software to tell me the temperature? Thanks. PS: What else should I do with all these parts? I already installed a RAM chip in my computer.

Posted by Zachintosh 6 years ago

### How does heating of nichrome wire work? Answered

I was thinking about a situation, but right now I've hit a dead end; Ok, picture this: There's a room with a length of nichrome wire which connects to a power supply. (The power supply is constant voltage, and the length of nichrome wire will be constant throughout these scenarios) If the room is at room temperature, and power is applied to the wire, it heats up to x degrees after 1 minute. Here's what I wanted to know: If the room was below room temperature, and power was applied, would it still heat up to x degrees after 1 minute? If the room was at x degrees, what temperature would the wire get to (i.e, would it be higher or lower than the very first scenario) when power is supplied, after 1 minute? Thanks in advance

Asked by .Unknown. 6 years ago

### Turkey Temp Help

I roasted a turkey to safe temps and turned the cooker off 10pm, Fell asleep then came back at 4am temp was at 140-150. Is it safe?

Asked by landsmob7 6 years ago

I am looking for a 12V adjustable tempurature sensor that will provide a trigger output when the temp exceeds the setting. Can anyone help ?

Posted by daveyandgolie 10 years ago

### wemos d1 mini blynk? display temperature&humidity?

Asked by turbiny 7 months ago

### what is the max temp of the waste oil furnace?

Asked by lemra4 9 years ago

### i wanna use thermoelectric material for temp to electricity conversion ?

Input  temp 200 deg celcius for glowing LED`s how many such materials should i use?

Asked by shiblinomani 5 years ago

### How cool should the browned butter be? Answered

How cool is 'cooled browned butter'? Room temp, body temp, ?

Asked by beaner2U 1 year ago

### Is the oven on/warm? what temp?

Asked by Eedd29069 on Delicious Cured Egg Yolks 6 weeks ago

Can we make a robot which has red,green and blue light which show hot,normal and cold temperatures respectively?

Asked by Garbage Bob 10 months ago

### What is a good weather temp to do this

Asked by RandyP64 on Dip Your Rims While Still on Vehicle. 3 months ago

### How to change displayed temp to Fahrenheit?

Asked by Andrewf64 3 months ago

I live in Minnesota in the winter I keep my house at 68 degrees to save on LP heating fuel. What temp. should the kitchen be for room temp. for bread to rise?

Asked by mopjocky 1 year ago

### Is there any solid that melts at a lower temp?

Matter can change states. Most solids need an increase in temperature to melt. Is there a solid that can melt at a lower temperature.

Asked by joyce kane 8 years ago

### What should the internal temp of properly baked bread be?

Is there an optimal internal temperature that bread should have to be neither underbaked nor overbaked? I saw a bread recipe recently which called for the use of a precision thermometer to take the bread's temp, but I haven't seen any other recipe suggesting this.

Asked by Mileman2010 6 years ago

### Arduino Run at the same time?

Hi ,  i got problem with my code which is can't run at the same time. for the Heat is great but the ultrasonic didn't trigger the buzzer which is more than 30cm away. btw here is my code , which part should i change ? Thanks #include #define trigPin 6    //trigPin #define echoPin 7    //echoPin LiquidCrystal lcd(12,11,5,4,3,2); int tempPin = A1;   // the output pin of LM35 int fan = 10;       // the pin where fan is int led = 9;        // led pin int temp; int tempMin = 35;   // the temperature to start the fan int tempMax = 70;   // the maximum temperature when fan is at 100% int fanSpeed; int fanLCD; int duration, distance; int buzzer = LOW; void setup() {   Serial.begin (9600);        //Baud rate   pinMode (trigPin, OUTPUT);  //trig pin as output   pinMode (echoPin, INPUT);   //echo pin as input   pinMode (13, OUTPUT);       //Buzzer pin as output   pinMode(fan, OUTPUT);   pinMode(led, OUTPUT);   pinMode(tempPin, INPUT);   lcd.begin(16,2);   } void ultrasonic() {   digitalWrite (trigPin, HIGH);   delayMicroseconds (1000);   digitalWrite (trigPin, LOW);   duration = pulseIn (echoPin, HIGH);   distance = (duration/2) / 29.1;   if (distance > 30)   {     Serial.print(distance);     Serial.println(" cm");     digitalWrite (13, HIGH);   }   else   {     Serial.println (distance);     Serial.println ( "cm");     digitalWrite (13, LOW);   } } void heat() {   temp = readTemp();     // get the temperature   if(temp     fanSpeed = 0;      // fan is not spinning     digitalWrite(fan, LOW);         }   if((temp >= tempMin) && (temp     fanSpeed = map(temp, tempMin, tempMax, 32, 255); // the actual speed of fan     fanLCD = map(temp, tempMin, tempMax, 0, 100);  // speed of fan to display on LCD     analogWrite(fan, fanSpeed);  // spin the fan at the fanSpeed speed   }   if(temp > tempMax) {        // if temp is higher than tempMax     digitalWrite(led, HIGH);  // turn on led   }   else {                    // else turn of led     digitalWrite(led, LOW);   }   lcd.print("TEMP: ");   lcd.print(temp);      // display the temperature   lcd.print("C ");   lcd.setCursor(0,1);   // move cursor to next line   lcd.print("FANS: ");   lcd.print(fanLCD);    // display the fan speed   lcd.print("%");   delay(200);   lcd.clear();   } float readTemp() {  // get the temperature and convert it to celsius   temp = analogRead(tempPin);   return temp * 0.48828125; } void loop() {    ultrasonic();   heat(); }

Asked by Melromeo 4 years ago

### Wireless boiler temp &amp; pressure monitor

I know it can be done but not sure if it already has been done.. If not I want to figure out a way to make a wirless network monitor system that can send SMS messages for low temp and/or pressure on a boiler(s). Any tips or diagrams would be appreciated.

Posted by VansDesigns 6 years ago

### How to get colder temp from Beertender

Does anyone Know How I can Hack the T-Fal Beertender which uses Heineken and Newcastle Brown ale mini kegs. I would like to get the temp lower than the 39 degrees that the factory set it at.

Posted by TheCritic 6 years ago

### Arduino can control the temp, humidity, light, CO2 into my greenhouse?

Hello, can anyone tell me if Arduino can control in a greenhouse these parameters? - temperature - humidity - CO2 - light ..? I need for a temp, humidity rate, CO2 rate and so on the Arduino activates different tools in my greenhouse. Thanks!

Posted by NeroInferno 8 years ago

### I want to build a digital temp guage one that can go to 450f and another that can read to 1300f.?

Picture is of comercial version. I just need an on switch and a readout

Asked by oakironworker 9 years ago

### I plan to adapt this for a rc car dyno how would i add additional displays for like battery voltage and motor temp? I would need to build circuits for the voltage detection and temp gauge but how?

Asked by paulrowlett 3 months ago

### Does this work with DD/MM/YYYY date formats and Celsius temps?

Asked by en1gm4 on Nest Thermostat History Data Logger 3 months ago

### Arduino | Run 2 Function at the same time.

Hi , i wanna ask about 2 function which is Ultrasonic and Heat that run at the same time  , For me , i just got Heat running as i want but the Ultrasonic doesn't trigger the buzzer if object (Laptop) 30cm away from the ultrasonic. I've been trying since last week but the result is still the same ;'( Btw here is the code , i've seperate it to 2 function which is Ultrasonic and Heat.  i hope u guys can guide me which part should i change or Add. Thanks in advance ;) //*********************************** #include #define trigPin 6    //trigPin #define echoPin 7    //echoPin LiquidCrystal lcd(12,11,5,4,3,2); int tempPin = A1;   // the output pin of LM35 int fan = 10;       // the pin where fan is int led = 9;        // led pin int temp; int tempMin = 35;   // the temperature to start the fan int tempMax = 70;   // the maximum temperature when fan is at 100% int fanSpeed; int fanLCD; int duration, distance; int buzzer = LOW; void setup() {   Serial.begin (9600);        //Baud rate   pinMode (trigPin, OUTPUT);  //trig pin as output   pinMode (echoPin, INPUT);   //echo pin as input   pinMode (13, OUTPUT);       //Buzzer pin as output   pinMode(fan, OUTPUT);   pinMode(led, OUTPUT);   pinMode(tempPin, INPUT);   lcd.begin(16,2);   } void ultrasonic() {   digitalWrite (trigPin, HIGH);   delayMicroseconds (1000);   digitalWrite (trigPin, LOW);   duration = pulseIn (echoPin, HIGH);   distance = (duration/2) / 29.1;   if (distance > 30)   {     Serial.print(distance);     Serial.println(" cm");     digitalWrite (13, HIGH);   }   else   {     Serial.println (distance);     Serial.println ( "cm");     digitalWrite (13, LOW);   } } void heat() {   temp = readTemp();     // get the temperature   if(temp     fanSpeed = 0;      // fan is not spinning     digitalWrite(fan, LOW);         }   if((temp >= tempMin) && (temp     fanSpeed = map(temp, tempMin, tempMax, 32, 255); // the actual speed of fan     fanLCD = map(temp, tempMin, tempMax, 0, 100);  // speed of fan to display on LCD     analogWrite(fan, fanSpeed);  // spin the fan at the fanSpeed speed   }   if(temp > tempMax) {        // if temp is higher than tempMax     digitalWrite(led, HIGH);  // turn on led   }   else {                    // else turn of led     digitalWrite(led, LOW);   }   lcd.print("TEMP: ");   lcd.print(temp);      // display the temperature   lcd.print("C ");   lcd.setCursor(0,1);   // move cursor to next line   lcd.print("FANS: ");   lcd.print(fanLCD);    // display the fan speed   lcd.print("%");   delay(200);   lcd.clear();   } float readTemp() {  // get the temperature and convert it to celsius   temp = analogRead(tempPin);   return temp * 0.48828125; } void loop() {    ultrasonic();   heat(); } //***********************************

Posted by Melromeo 4 years ago

### I've completed the wifi temp project. The lcd shows no data, until I power up the esp8266 connected to the dht11. Then the LCD screen shows temp and humidity values of zero. Any idea what I've done wrong?

Asked by TIHANS22BRA on Remote Wi-Fi DHT11 Temperature and Humidity I2C 2 X 16 LCD Display With Two ESP8266 and Visuino 20 days ago

### which low temp metals can be used in the food safe mold? Answered

How much heat can the silicone for the food safe mold with stand can you cast silver or copper or only lead or aluminum

Asked by GrizzlyB1 1 year ago

### Stopper thermowell for DS18B20 temp sensors?

Does anyone know of a thermowell stopper that would fit a DS18B20 temp sensor? The ones I've come across look to have an inner diameter of .25 inch, and the DS18B20 probe diameter says .24 inch. Are there any other thermwell stoppers out there with a wider inner diameter? I'd like to go with a thermowell stopper so I can use it on buckets and maybe carboys as well.

Asked by DELETED_MakiY2 11 months ago

### 2nd question which resistor goes to which temp sensor as it is not mentioned

Asked by nigelC42 on Automated All Grain Electric Beer Brewery for 100 €/USD 2 months ago

### Here we take voltage as a temp but how to measure output voltage?

Asked by shubhamchoudhari3009 3 months ago

### constant power with timed output

Hi all,           So ive found a circuit that i wish to use found here: http://www.maplin.co.uk/module.aspx?TabID=1&criteria=usb&ModuleNo=220003&C=SO&U=Strat15 its a temperature activated circuit so when it gets to say 30 degrees celcius it switches the relay and makes the connection what i need it to do is when it reaches the designated temp, give a momentary 12v for 2 seconds then do nothing for 1 minute, if it is still at the designated temp after 1 minute give another 12v for 2 seconds then nothing for 1 minute and so on and so on untill the temp drops below the designated temp and the circuit will no longer be live untill it reaches temp again. is there any easy way to modify this circuit or another way to do this thanks

Posted by newbie308 7 years ago

### Which is the most popular high temp glue gun?

I want to start building cosplay costumes with EVA foam panels. As far as I can see, people tend to use high temp glue guns for this purpose, but dang if I can't find any posts that can clue me in to which specific gun and glue to use. There are many different guns and glue out there!  Thanks! mowgli out

Posted by boymowgli 3 years ago

### You really do need the 195 temp for the meat to pull easily.

Tip by MitchellB49 on How to Make Smoked Pulled Pork Butt 3 months ago

### I NEED MORE INFO THAN "A COOL PLACE , WHAT TEMP ?

Asked by dhermann1 4 months ago

### Is it possible to read the state of a relay? I am working on a system to turn my room fan on if the temp reaches above a certain point. I figured out how to turn the relay on or off depending on temp, but it tries to turn the relay state on or off on every loop cycle. Is there a way to determine ...

Asked by MatthewP241 on Arduino 2 Channel Relay 6 weeks ago

### Electric Average: How do you compensate an electric bill from a previous bill when factoring in a difference in av temps

I understand the averages using billed days, total kWh, and the average kWh per day.  But, how would I account for different average temps?  I put in LEDs this fall and want to see if there has been a difference in usage.  our av. Temp this Feb was 29 degrees; last year it was 34.

Asked by cgmox3410 5 years ago

I recently received a temp password for my account, and now that I am logged in and trying to change it to a new one of my own, I am running into a problem. When I enter the temp pass in the 'old password' window one, I get an error message saying "wrong password" I know the temp passes are often limited in functionality to a short time window, so am hoping for a rapid reply & help on this problem.  Mary

Posted by MaryLenehan 5 years ago

### High temp release for casting glass.? Answered

I cast in glass (1750 F.), I currently use yogurt containers as the mold walls (I am currently limited to casting objects that fit in a cylindar 4" diam. X 3.5"). I usually use pre-made ice cube molds into which I pour 'composi-mold' for the positive to be cast in high temp mold material for the negative. The limit I have is due to casting in my microwave - the kiln uses magnetite agitated by the microwaves to produce heat. My problem is the unpredictability of my release material; sometimes the piece just drops out and sometimes i have to clean the glass piece - any suggestions on high temp releases?

Asked by Zaacharia 12 months ago

### Hi, someone can tell me how to add temp display please,thanks

Asked by najob on Big, Auto Dim, Room Clock (using Arduino and WS2811) 6 weeks ago

### Do you have the templates of the rocker arms. I don´t find them!

Asked by mac1310 on Rocking Speeder Bike 8 weeks ago

### is it possible to boil water from room temp (20C) using regular batteries?

Hello everyone, is it possible to boil water from room temp (20C) using regular batteries? according to my research, to warm up 500mL of water by 10C within 10 minutes, it will take 1 battery (3.7V 3400mAh). I have a feeling that's wrong but I used this formula and some others: [500 grams * (Tfinal - Tinitial) * 4.186 J/g C ] / [E.battery]

Asked by inventor2014 4 years ago