Temperature control

Hey I am wondering how to make something to shut off a heat source at a certain temperature. The heat source is a normal appliance that is plugged into the wall.

Posted by lun0s 8 years ago


How do regular rechargeable batteries do in cold temperatures?

How would regular 1.2V rechargeable batteries do in extreme cold temperatures like -40, even if they were receiving a charge in that temperature? They would be kept in an air tight container. Thanks in advance.

Posted by horsebones 7 years ago


Temperature and LEDs

Is there a way to control a group of LEDs or even an RGB LED with some sort of temperature sensor/thermometer? I'm new to electronics and wanted to know if you could have a Red LED glow when something relatively hot/warm was near and have a Blue LED glow when something relatively cold/cool was near by. I'm new to electronics and was just curious

Posted by smkoberg 9 years ago


temperature logging with raspberry pi

New here, and to Pi/Python looking to log data from a few different sensors from Atlas Scientific (RTD & PH).  I've gotten really stuck so fare in getting these going and was wondering if anyone here can help me out.  so far I've used this code:  import smbus import time import datetime #SMBus(0) - Raspberry Pi Model A #SMBus(1) - Raspberry Pi Model B bus = smbus.SMBus(1) #I2C address of sensor address = 0x66 def temperature():     rvalue0 = bus.read_word_data(address,0)     rvalue1 = (rvalue0 & 0xff00) >> 8     rvalue2 = rvalue0 & 0x00ff     rvalue = (((rvalue2 * 256) + rvalue1) >> 4 ) *.0625     #print rvalue1, rvalue2     return rvalue print("Temperature Data Logger\n") while True:         #Open Log File     f=open('tempdata.txt','a')     now = datetime.datetime.now()     timestamp = now.strftime("%Y/%m/%d %H:%M")     outvalue = temperature()     outstring = str(timestamp)+"  "+str(outvalue)+" C "+str(outvalue*1.8+32)+" F"+"\n"     print outstring     f.write(outstring)     f.close()     #log temperature every 10 seconds     time.sleep(10) I've got the two sensor boards connected to the raspberry pi 3 mounted via a Whitebox Tentacle T3.   The boards are in i2c mode and i can see them using sudo i2cdetect -y 1 (they show up address 63 and 66)  but when i run this program above I just get a red error light when it reads the temperature.   The log file reports a measurement of 2C and 35.2F which is not correct but the red light on the board tells me that the Pi is trying to connect with it.   Anyone able to help?

Posted by Chair_t 9 months ago


120v thermostats: need help building or sourcing

I'm planning to build an incubator, and I need something to help regulate the temperature.   I've found some in-line thermostats online, but if I had a parts list, I could easily wire something myself.  Does anyone have any knowledge or experience they can share with me?  Thanks!

Posted by awascholl 4 years ago


Temperature LED lights for motorcycle

Hi I would like to build a temperature sensing leds for my rid to work on my motor cycle to check for black ice!. I want have this circuit as small as possible (fit in a bike light so can mount on handle bars of my motor bike) I have been able to do this via a Arduino board but when I convert this to work on a Attiny85 it will not read the same results. I think this could be due to the way the Attiny85 converts the elec signal. I use a 4.5 volt battery (3 * 1.5) could this be the problem? Here is the code I have used for both the Arduino (which works great) and also the Attiny85 (not working as should) /* temp lights using Uno & LM35 Arduino */ const int tempPin = A0; const int Temperature= 0; // declare the led pins  const int led01 = 9;   const int led02 = 10;   const int led03 = 11;  //declare the variable for the temp int temp=0;//changed to = 0? int AjustTheTemp= 0; //Declare the leds as outputs void setup() {    Serial.begin(9600);      pinMode (led01, OUTPUT);   pinMode (led02, OUTPUT);   pinMode (led03, OUTPUT); }     // Main Program     void loop() {         // read the voltage from the temp sensor     // and change it to celsius     int reading = analogRead(Temperature); float voltage = reading *5; voltage /= 10; float TemperatureC = (voltage - 0.5) ; //show temp in monitor so can make changes        Serial.print("TEMPRATURE = ");   Serial.print(TemperatureC );   Serial.print("*C");   Serial.println();     delay (1000);//delays the print to monitor                // by 1 sec   if (TemperatureC<(1-AjustTheTemp)) {   digitalWrite(led01, HIGH);   digitalWrite(led02, LOW);   digitalWrite(led03, LOW);   } else if(TemperatureC<(4-AjustTheTemp)){   digitalWrite(led01, LOW);   digitalWrite(led02, LOW);   digitalWrite(led03, HIGH);  }    else if(TemperatureC<(10-AjustTheTemp)){   digitalWrite(led01, LOW);   digitalWrite(led02, HIGH);   digitalWrite(led03, LOW);      }      } /* temp lights using Attiny & LM35 */ //const int tempPin = 0; const int Temperature= 3; // declare the led pins (attiny) const int led01 = 2;   const int led02 = 1;   const int led03 = 4;  //declare the variable for the temp int temp=0;//changed to = 0? int AjustTheTemp= 0; //Declare the leds as outputs void setup() { //  Serial.begin(9600);      pinMode (led01, OUTPUT);   pinMode (led02, OUTPUT);   pinMode (led03, OUTPUT);   pinMode (Temperature, INPUT); }     // Main Program     void loop() {         // read the voltage from the temp sensor     // and change it to celsius     // temp = analogRead(Temperature);     // temp = temp * 0.48828125;        int reading = analogRead(Temperature); float voltage = reading *5; voltage /= 10; float TemperatureC = (voltage - 0.5) ; //show temp in monitor so can make changes        // Serial.print("TEMPRATURE = ");   //Serial.print(TemperatureC );   // Serial.print("*C");   // Serial.println();     //delay (1000);//delays the print to monitor                // by 1 sec   if (TemperatureC<(27-AjustTheTemp)) {   digitalWrite(led01, LOW);   digitalWrite(led02, HIGH);   digitalWrite(led03, LOW);   } else if(TemperatureC<(29-AjustTheTemp)){   digitalWrite(led01, LOW);   digitalWrite(led02, LOW);   digitalWrite(led03, HIGH);  }    else if(TemperatureC<(31-AjustTheTemp)){   digitalWrite(led01, LOW);   digitalWrite(led02, HIGH);   digitalWrite(led03, LOW);      }      }

Posted by minimadmalc 3 years ago


arduino bt and LM34 temperature help with code

I have an issue i hope someone can help me with. i have an arduino bt and would like to use 3 LM 34 temperature sensors. I have found code for one of these sensors and works well. My problem is with code...i don't know any. I would like to add 2 more of these same sensors and have them print out like the current program that someone has written, i have posted the code below.// Define which analog input pin we have connected to the temperature sensor#define TEMP_SENSOR_PIN 0#define ANALOG_VOTLAGE_REFERENCE 5void setup() {Serial.begin(115200);}void loop() {// prints the currrent temperature with 2 place after the decimal pointprintFloat(getTemperature(), 2);// print a carriage returnSerial.println();// rest 1000 millisecondsdelay(1000);}float CtoF(float c) {return ((c -32.0) * 5.0 / 9.0 ) * 9.0 / 5.0 + 32.0 ;}float analogInToDegreesC(int inputValue) {return inputValue / 1023.0 * ANALOG_VOTLAGE_REFERENCE * 100.0;}float getTemperature() {return CtoF(analogInToDegreesC(analogRead(TEMP_SENSOR_PIN)));}void printFloat(float value, int places) {int digit;float tens = 0.1;int tenscount = 0;int i;float tempfloat = value;float d = 0.5;if (value < 0)d *= -1.0;// divide by ten for each decimal placefor (i = 0; i < places; i++)d/= 10.0;// this small addition, combined with truncation will round our values properlytempfloat += d;if (value < 0)tempfloat *= -1.0;while ((tens * 10.0) <= tempfloat) {tens *= 10.0;tenscount += 1;}// write out the negative if neededif (value < 0)Serial.print('-');if (tenscount == 0)Serial.print(0, DEC);for (i=0; i< tenscount; i++) {digit = (int) (tempfloat/tens);Serial.print(digit, DEC);tempfloat = tempfloat - ((float)digit * tens);tens /= 10.0;}// if no places after decimal, stop now and returnif (places <= 0)return;// otherwise, write the point and continue onSerial.print('.');for (i = 0; i < places; i++) {tempfloat *= 10.0;digit = (int) tempfloat;Serial.print(digit,DEC);// once written, subtract off that digittempfloat = tempfloat - (float) digit;}}

Posted by rodgard 9 years 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


Need a designer for a simple down-hole Well survey device project

Greetings, I am looking for design help (paid) for a project I have in mind.  I would like to design a temperature and fluid conductivity (possibly some other parameters, ie pressure) monitoring device for water wells.   The device needs to be small, self powered (battery) and may incorporate data logging capabilities.  I would like the device to use off the shelf  parts like Arduino or some equivalent . The device will need to be designed to fit into a very small water tight and pressure safe housing (60 Atm ~ 800 psi).  I am interested in contracting someone to do the electronic/sensor design and  write any code required, I will design/build the housing to fit.  Look forward to hearing from anyone interested.

Posted by ccorbell 6 years ago


Manipulating temperature in garment steamer

 I have a garment steamer. As a school project, I need to do an innovation where I need to add temperature regulator features. I have read that irons use thermostat to control the temperature, how do i install a thermostat in the steamer or is there other ways to regulate the temperature. By the temperature regulator, i should be able to produce the right amount of steam at the right temperature for each fabric.

Posted by WafiqahK 11 months ago


Temperature stabilizer system with peltier battery

Hello everyone! I have a thesis to design a temperature stabilizing(controlling) system for solar cells.I need to use 12V Peltier battery and a simple pc fan.Any further help is appreciated.

Posted by UgurO 3 years ago


temperature controlled switch

I I'm working on a water spray kit for my intercooler on my car and i want the pump to turn on when the air outside is => 50 and the intercooler is like 15-75 > then the air i want both of the them to be adjustable. I i could make it activate when its like >50 the and it activate 30 above that the out side air or something like that could and one help me out the a schematic.

Posted by dragon2144 9 years ago


vehicle vinyl application

I'm working on a large project with a deadline, and falling temperatures in the Northeast are influencing my work performance. What I need is a portable, efficient, and safe device and/or method that can quickly heat the outside of a car.I am working with temporary adhesive vinyl panels that are being applied to the entire hood and trunk of New York City taxi cabs. We can only apply these panels for about 2 more weeks, and we are trying to cover as many taxis as possible. The weather, however, has been slowing our progress. When the temperature gets to about 60 degrees F and lower, the panels become very brittle, almost like paper, and lose some of their adhesive properties. Application becomes very difficult. We're able to keep the panels in a heated vehicle, which helps a bit. But the outside of the cars, particularly the trunks, are too cold for a proper application. The hood can be easier if the engine has been running for a bit, because this warms the panel and restores its malleability.Does anyone have any suggestions concerning a fast, efficient, portable, and safe method for heating the coachwork of a vehicle? If you can't meet all of the criteria, the device and/or method must at least be portable. But I'm curious to hear any other suggestions, as well. I've come up with a whole slew of ideas that are plenty fast but are in no way safe. Let's face it, though, they're still fun to think about.Any help would be greatly appreciated. I have faith in the creativity of Instructablers! And think of it this way; your help can contribute to a really excellent project. If anyone would like more info, gardenintransit.org. Rock on.

Posted by teej 10 years ago


LCD temperature logger

A temperature logging system based on Arduino that outputs to a 5" color LCD.  Accommodate multiple inputs, and display simultaneously in different colors.  User adjustable time span on the LCD, user adjustable temperature ranges.  Would be great for a weather station and other apps.

Posted by LesB 3 years ago


Temperature Monitoring - Brewing Beer

Hello! I am new to here. I have done a bit of coding in the past, but not really delved too deeply into the hardware side of things.  I am currently brewing beer and would like to make something with a thermostat that I can attach to the outside of a plastic bucket to monitor the brewing beers temperature. The thermostat would need to have a bit of length to it. It would also be amazing to record this data on a computer. Can anyone help me out, and point me in the right direction?  Much appreciated! Thanks, Ged

Posted by GedK 3 years ago


science Question!

While day dreaming in history class, A question popped into my mind; If our body temperature is 98 degrees Fahrenheit (37 degrees Celsius) why are we uncomfortable in hot weather?

Posted by mynameisjonas 9 years ago


Need a small 12v heat source for simulated HVAC project

Okay, so for our year end micro controller project we need to control a temperature inside two 2L pop bottles connnected together. We have a computer fan mounted at the end of the "heating bottle" which needs a heat source in it. The fan will blow the hot air from "heating bottle" into "temperature bottle" which contains an analog temperature sensor. We have to control a set reference temperature point in "temperature bottle" using a PIC16f690 microcontroller by manipulating the fan speed and heat ON/OFF. Problem: I need a decent heating source inside "heating bottle" . Ive been using 12v automotive lightbulbs which work great for a minute or two but then die out. My crappy power supply can only pump out 1 amp, could this be why? Any suggestions on what to use as a heat source? I was thinking some 5w resistors but classmates have said our power supplys cant handle them either. Thanks in advance!

Posted by Korey 10 years ago


I'm melting

I recently got some thin PVC plastic for cheap.  I would like to soften it so I could shape it, but I have no idea what temperature to do it at or what to use to heat it.  I don't want to spend money.   Thanks!

Posted by elliot5445 4 years ago


Tutorial: LCD Thermometer with optional Alarm

I created this Arduino tutorial. I hope somebody finds it helpful! Feel free to post any comments or suggestions. http://wellsb.com/post/1328196426/arduino-lcd-thermometer-with-optional-alarm

Posted by 5m0k3 7 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


Heat gun mod question

I am not an electrician but I like to tinker. I am just getting started with DIY type electronics kits and I have decent soldering skills. I cant say I am an expert at reading prints, but I can usually build a simple schmatic. I wish to disassemble a heat gun for parts and add in a potentiometer to vary the heat, another potentiometer to control the airflow, and a digital temperature probe with temp display. I am attempting to build a heat generating device with precise control of the temperature and airflow. I dont really want to spend $150 on a fancy LED digital display heat gun with variable heat dial, so this is my next option and potentially a heck of a lot more fun. Initially I just want to get the variable heat and airflow control(potentiometers) hooked up, and if it will be easy enough I can later install the temp display. I could always just use a cheap "laser" temp probe to check the temp and ensure it is fairly stable. The heat gun I am looking at is a piece of junk and it only has 2 temp settings. How easy is it to install a potentiometer for varying the heat and one for the airflow? I assume I can just install the one for heat control inline after the circuit that sets the maximum heat level and dial in the temp I want. As for the airflow control I assume I could do the same thing, but instead put it before the power lead feeding the fan. I am not an electrical engineer so I want to make sure this will work first before I fry my cheapo $20 heat gun. Would it be bettter to just gut the entire thing and work with the naked parts and install my own circuit to control and display the temp or could I keep the basic unit intact and mod from there? Any ideas, or a basic schematic that would satisfy this requirement would be greatly appreciated.

Posted by RokGoblin 9 years ago


temperature controller

I have a code that can increase the duty cycle of the pmw output to control the brightness of my bulb and i have lm35 conneted next to the bulb to sense the temperature and now my problem is i have to add two more additional switches for my gain and make the other two the setpoint of my temp,and i de an attachment of my code

Posted by PapaneE 2 years ago


Wireless temperature sensor

Hi I am looking to start playing around with some solar projects. I am looking for a wireless temp sensor or sendor that can work with my Mac or something with a base station that logs temps. Something accurate, versitile  not too expensive would be great Thanks

Posted by xkravx 7 years ago


modify wine cooler thermostat refrigerator thermostat operating temperature

Hello. Can someone please tell me how to modify the thermostat on a wine cooler (that uses a compressor). I want to change the temperature from running between 10c-18c to 0c-5c. Please post an instructable or give me ideas- even if generic, it would be helpful.I am specifically trying to modify a baumatic bw18.

Posted by drosengarten 8 years ago


heat sensitive wall outlet

Does any one have or had plans for a wall plug outlet or an extension cord from a tool that would turn off if the temperature of the devise reached a preset degree.  i.e. your coffee machine operated normally but it caused the duplex plug to overheat and the circuit would shut down avoiding a possible fire condition. 

Posted by dano9999 1 year 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


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


Check CPU temp, fan speed, etc. with a batch file?

I want to check some things like my CPU temperature, fan speed, and other things like that. However, I can't install programs like CPU-Z, or SpeedFan(Don't ask why, I just can't). I've heard of some people doing it through a batch file. Can someone please tell me how?

Posted by metrogdor22 7 years ago


Solar heating and perceived temperature

We've had an interesting discussion spanning several months on the efficacy of this instructable's approach to heating: https://www.instructables.com/id/Foil-Solar-Panels-for-Windows-VERY-Easy/ The conversation has gone long and isn't really that appropriate for the comments there so I've moved it here. Summary: The approach described in the instructable is to create a thin metal panel that hangs inside of one's window, which is heated by the sun's radiant energy. Convection then carries the hot air next to the panel up and circulates it within the room. The question is whether this approach provides a warmer perceived environment than simply letting the light into the room. As I see it, the question has two components. First, which one nets more heat energy inside the room? For an average room, the light will be scattered many times before a tiny fraction reflects back out the window. A flat foil panel as described in the instructable would have to be extremely absorptive to match this level of energy capture, because it gets only one bounce for its capture and also must capture the heat in an extremely small thermal mass. For this part of the question, not having a panel seems the likely win. The second part of the the question is more complicated. What is the perceived temperature in the room, given differences between convection heating of the air versus radiative heating of objects and surfaces in the room? On this count I'm unsure, but it seems that radiative heat contributes more to human comfort (see this Wikipedia article: http://en.wikipedia.org/wiki/Mean_radiant_temperature). If that's true, the panels lose again. Discuss!

Posted by nagutron 6 years ago


Need help wiring up this digital thermometer

I bought a thermometer and probe from McMaster-Carr, but didn't expect that it'd come without a power plug nor a clear way to wire it to the probe. Instead, there are a few connections at the back and I need a hand to make sure I don't break anything. Can anyone here help me identify the right way to wire this for 110v wall power? Do I put one end of the power cord into the 0 VAC socket, and the other into the 115 VAC? Also, the probe terminates in eyelets, where this wants a raw wire for the connection. I can snip them--is that right? And why are the probe wires red and yellow (the unit has inputs for TC+ and TC-). I've attached a photo of the rear of the unit. Thanks for your help everyone. EDIT: I did some research and figured out that my hunch was correct. One connection to 0VAC, the other to 115VAC, and the probe leads into the other side. Works great, too.

Posted by mikejs 9 years ago


how to make a temperature control kit for an egg incubator

Hi can anybody tell me how to make a temperature control kit for incubating bird eggs with a max temperature of 40 degree celsius ?would be eagerly waiting for your reply!!

Posted by koolio_72000 9 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


Would a glass, vacuum-insulated thermos be able to withstand the extreme cold of liquid-air?

I am in the middle of designing a system to produce liquid air using the von linde process. the termos would not be under any pressure, but it will get quite cold. can a thermos using a glass vacuum insulated inside be able to withstand temperatures below -180 degrees celsius?

Posted by pedrogabman 8 years ago


Can a glass, vacuum insulated container withstand temperatures in the -180 degree celsius range?

Is it possible to store liquid nitrogen and oxygen in a vacuum insulated container for a short period of time? i have a thermos that i though might work, but i want to be sure that im not going to have the thermos explode in my face when i try it. this is an old beefy thermos that can take at least 190 degrees celsius, but im not sure about the other direction.  

Posted by pedrogabman 8 years ago


How to make Finches - Love Bird Incubator

Hi, I have read many blogs on how to build our own small incubator for my finches or hen eggs. The problem is every blog, instructable, guide shows to put 25 watt bulb, but my question is.. Is there any possiblity to put some automatic thermostat which gets on when the temperature is lower then desired  temperature (eg. 102-103 degree fahrenheit) and the thermostat should shut down when the temperature is reached to desired temperature. Using bulb can not be effective in different climat condition and after a long run it becomes very hot inside the incubatore, plus it needs extra attention during the incubation period. I checked on net for this type of automatic thermostate but it is too costly and basically made to control for room temperature. Any guidance on low cost automatic temperature control where a user can set temperature for low temperature of appx 100-103 degree fahrenheit would be much appreciable. Thanks in Advance. Rohit

Posted by Rohit.Agrawal 5 years ago


Monitor Temperature And Humidity Via Internet

I would like to build a project which can monitor the temperature and humidity in each one of my rooms in our house and at my daughters apartment.  I would like to use a web page to monitor from anywhere.  I know there are sensors which can do both.  Each room has a computer and is connected to the Internet.  So how do I begin?

Posted by SpaetzleKing 2 years ago


Temperature sensor using LTC2984

Dear Sir, I am using following device to measure temperature accurately,http://www.linear.com/solutions/5500 According to datasheet, the eval board can show a virtual temperature output using built in thermocouple thermister, RTD etc in ADC mode . http://www.linear.com/product/LTC2983, I need to measure real temperature which they apply in Heat bath or temperature calibration set up. I dont have such set up now, could you kindly give me a way out that without those set up I could manage Thermistor ? Kindly go through the page 43-47 in this datasheet, http://cds.linear.com/docs/en/datasheet/2983fb.pdf. Thanks in advance.

Posted by Hasan2015 2 years ago


Temperature sensor with cool thermistor

Hi, I am trying to make a temperature sensor using a thermistor. I've made a basic circuit using an Arduino and some tutorials from this site and couple others, which works well but the thermistor heats up way too much - perhaps to about 50 or 60 degrees - but it needs to stay around room temperature for my application. I'm using a 5V output from an Arduino through a 15Ohm thermistor - am I doing something wrong? Many thanks for the help! The one I've made is almost identical to the one in this tutorial: http://www.circuitbasics.com/arduino-thermistor-temperature-sensor-tutorial/ except a different thermistor

Posted by Mickey_blu_eyes 1 year ago


ping pong ball temperature sensor

I remember seeing an instructable where they put a temperature sensor in a ping pong ball and when it's cold out it turns blue and when it's warm its red. I've been trying to find it here and on google, but I can't find it anywhere. Has anyone seen it lately?

Posted by ravenhaker 7 years ago


Quenching steel

So what temperature is red hot steel?

Posted by steven07 11 years ago


GSM remote temperature monitoring/ logging

Hello! I currently monitor low energy buildings using temperature, power and CO2 sensors.  These are stand-alone units which log to an internal memory. Which is great if the person is in and you can collect the data - but not so good if they are out. I want to take things to the next level and be able to collect temperature and power logs remotely.  There are bits of kit on the market which do this - but the cost is prohibitive (£1,000+).   There are also various other cheaper GSM based products on the market for GPS trackers, car sensors, home monitoring etc... Is anyone out there clever enough to suggest cheap modular components that could be combined to: 1 - sense a temperature 2 - log the temperature 3 - periodically send the file via a mobile signal I'm up for doing the work  if someone can point me in the right direction - or very happy if some has already done it! Many thanks John

Posted by Cornwalljohn 5 years ago


Build a warming/cooling box for maintaining temperature range year-round

Hi all, I need to build a box about 75cm wide, 50cm tall, 50 cm deep, that will maintain a temperature range of 20-30 degrees C (about 68-86 F) in ambient temperatures of 0-35 C (32-95 F).  What are my best options for heating and cooling? For temperature regulation I imagine I'll be using an aquarium thermostat for the heating end of things.  What would be best for cooling? I am imagining a plywood frame with a plastic tray insert, covered with styrofoam sheets. Pretty simple stuff. It will probably hinge open on the front face.  I'll be keeping fermenting and sprouting foods in it. thanks for any help and ideas! -bs

Posted by bluescrubby 5 years ago


Cool Shirt

Hi there - wonderful minds! I am seeking some help here in creating a shirt that should sense the temperature or sweat and then itself sprays some coolant to cool off. Much useful in summer season ofcourse

Posted by BeautifulBrain 3 years ago


Gardening in extreme temperatures

Last year whe hit low temperatures at -21 °C, and as a bloody result most of our plants "burned". Imagine all of my aloe vera plants freezed to death and when touched, they snapped like a piece of pointy ice. There where a lot of eucalyptus trees in here, those too suffered because of the extreme cold, so a lot of people where chopping down 8 meter logs... I live in the Texas border line , so the ambient in here is mostly like a dessert. I know a lot of folks live in places where temperatures are more extreme, so, what tip can you give to at least protect plants that store a lot of water (like aloe vera plants)? Given the region, what kind of plants you recommend to plant in this kind of environment, plants that take lots of sun, little watering. PD. I know is August, but a friend just recommended me this site! very cool site indeed

Posted by dan_ray 6 years ago


Windows that self-close to regulate temperature

I like letting the outside air blow through my apartment, but I also like the temperature and humidity to be in a good range. So I go around opening all the windows when it's a good temperature outside, and then forgetting to close them later. I wish windows could be programmed to open themselves automatically to regulate the temperature. I bet this could save a lot of money on heating and air conditioning, while allowing fresh air from outside to come in. I'm imagining a bunch of slats of glass that can rotate like Venetian blinds that are controlled by bimetallic strips or something :) Maybe there would be two layers for better insulation, and one layer could open to allow more heat exchange but not air flow, and both could open at the same time to allow air to flow. For modifying an already-existing window, it would have to install motors and stuff. Anyone have any ideas about how something like this could be made?

Posted by endolith 10 years ago


Help with JARVIS-like Smart Home

Hey guys, I am planning to do a project with Smart Home theme. I would like to create JARVIS-like application, which would be able to recognize my voice and then do appropriate action. Example: Temperature Sensor Me: "Jarvis, Show Temperature" Jarvis: -"Temperature displayed sir" I am planning to buy a very cheap Tablet, on which I would like to write an Android Application, which would create "jarvis" and other activities. For example, if I say "Show Temperature" the activity would pop up, where the temperature will be displayed. I will messure temperature with a Thermometer (DS1280 most probably). And I'd like to use a Bluetooth module to communicate Wireless with them. Temp. Sensor -------- > Arduino board ------------> Tablet All of the above are on different locations. I need help with this project, so if anyone could do an instructable on how to do this - would be really awesome! What do I need ? - Temp. Sensor - Bluetooth Module - Arduino Mega - Speech regonition software (BitVoicer probably) - anything else? Also, is the TFT display (http://www.geeetech.com/wiki/index.php/3.2TFT_LCD) good enough to replace the Tablet ?  Meaning, can I write such an Application to this display ? Thanks, David

Posted by DavidDaVinci 3 years ago


A non-toxic sealing material that can resist moderate temperatures?

What should I use to seal two glass plates which will make up the sides of a shallow tank of a solar water heater? It should be able to resist temperatures of up to 80 degrees Celsuis.

Posted by mahela007 9 years ago


What are your plans for the summer this year?

Are you going somewhere with your family and loved ones or going to stay at your place and enjoy the summers in the cool temperatures of your air conditioner? I am not going anywhere this year and enjoy the hot temperatures outside. What are your plans, please add your replies.

Posted by specialtyairinc 4 years ago


PID controller to control temperature

I need to control the temp. using PID controller @ an accuracy of the +-0.5 degree Celsius. What will be the procedure step by step, to do the task. Please note that Range is 35 to 40 degree Celsius & ACCURACY is of prime importance. Please reply fast. Waiting for your positive & valuable response. Thanks &Regards-; Sanga

Posted by sanga20591 3 years ago


Indoor Thermometer - Check temp at home while at work

Hello! I sure hope this qualifies as a Tech category! I'm looking to build (or possibly buy) an indoor digital thermometer that transmits the temperature information to my computer over the internet. The goal is to be able to check the temperature of my house while I'm at work, or anyplace else with internet access. Do any of you know of a simple way to build this? Has it been done before? With temperatures here in Washington DC breaking records this week (over 100F) I'm worried about my pets health at home, and more worried that the a/c will go out while I'm away and I'd never know. This could result in the death of my pets, and I'd love to be able to be informed in time if something were to happen and the temperature rose suddenly (or dipped, in winter). Help in the right direction is greatly appreciated!

Posted by Kindlekat 8 years ago