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I unpublished my instructable https://www.instructables.com/id/DIY-natural-gas-generator-convertir-de-nafta-a-ga/ but it remains in the page.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


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


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


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


Adj. Temp Sensor

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


Wireless boiler temp & 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 | 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 < tempMin) {   // if temp is lower than minimum temp     fanSpeed = 0;      // fan is not spinning     digitalWrite(fan, LOW);         }   if((temp >= tempMin) && (temp <= tempMax)) {  // if temperature is higher than minimum 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


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


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


Reset password not working

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


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


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


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


sensor design

Any one please help!!!!! i am student of VIT university INDIA i am working on a project with ISRO (Indian space research organisation). we are inserting our payload which consists of 7 sensors. our sensors working temp is 273 kelvin but these sensors will be exposed to the outer atmosphere at an altitude of 80 km above earth surface where the temp is 197 kelvin [ our sensors will be placed inside,outer air will be sucked inside ]. at this temp our sensors wont work so we have to come up with a strategy which heats the incoming air in to the rocket to 273 kelvin, so please help us in designing the sensor so if you have any mechanism for heating the air please inform me. my email is     kapilkoundi@gmail.com

Posted by kapilkoundinya 7 years ago


Video Not Publishing

I am attempting to publish my video, and still it is not publishing. The YouTube code is embedded properly. Apparently, this is a known problem. Is there any sort of temp fix for this?

Posted by Progressive Automations 4 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


need advice for process control software

I am new to process control software. We are working on a solar steam project that will require some form of automated control. We need suggestions for software (preferably open source and will run on a windows pc) that will handle temp and pressure data aquisition. The software should also be able to affect small electric motors based on the data parameters. Also any recommendations for temp and pressure (psi) sensors would be greatly appreciated. Thanks for any suggestions

Posted by culinadge 10 years ago


problem with making my Arduino Ethernet shield to communicate with the server

I have a problem making my Arduino Ethernet shield to communicate with the server, the result on the serial monitor is always: Not connected Cannot connect to Server #include #include //------------------------------------------------------------------------------- byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //MAC Address char server[] = "api.pushingbox.com"; //pushingbox API server IPAddress ip(192,168,1,2); //Arduino IP address. Only used when DHCP is turned off. EthernetClient client; //define 'client' as object String data; //GET query with data float temp; //temp means temperature boolean cste = false; //------------------------------------------------------------------------------ void setup() {   Serial.begin(9600);   if (Ethernet.begin(mac) == 0) { Serial.println("Failed to configure Ethernet using DHCP"); Ethernet.begin(mac, ip);   }   delay(1000); } //------------------------------------------------------------------------------ void loop(){    int temp_ADC = analogRead(0); //read analog input on pin A0    temp = temp_ADC * 5.0 * 100.0/1024.0; // ADC to celcius conversion    tempData(); //packing GET query with data    Serial.println("connecting...");    if (client.connect(server, 80)) {      sendData();       cste = true; //connected = true    }    else{      Serial.println("connection failed");    }   // loop   while(cste){     if (client.available()) {    char c = client.read(); //save http header to c    Serial.print(c); //print http header to serial monitor     }     if (!client.connected()) {    Serial.println();    Serial.println("disconnecting.");           Serial.print("Temperature Sent :");           Serial.println(temp); //print sent value to serial monitor    client.stop();           cste = false;           data = ""; //data reset     }   }   delay(5000); // interval } void tempData(){   data+="";   data+="GET /pushingbox?devid=vB917B251887BF54&tempData;="; //GET request query to pushingbox API   data+=temp;   data+=" HTTP/1.1"; } void sendData(){   Serial.println("connected");   client.println(data);   client.println("Host: api.pushingbox.com");   client.println("Connection: close");   client.println(); }

Posted by SoufianeG 3 years ago


pvc pipe building

Check this site out: http://flexpvc.com/projects.shtml After seeing the pvc stepladder project (one of many projects on this page), I'm temped to make some pvc scaffolding for low height applications.

Posted by mikemckay 6 years ago


problem with UDP.print

Hi everyone my problem is that i want the send 3 sensor data over ethernet UDP in one time  and i don't know the way to do that thank's for your time #include //Load Ethernet Library #include //Load UDP Library #include //Load the SPI Library byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xEE}; //Assign a mac address IPAddress ip(192, 168, 1, 252); //Assign my IP adress unsigned int localPort = 4000; //Assign a Port to talk over char packetBuffer[UDP_TX_PACKET_MAX_SIZE]; String datReq; //String for our data int packetSize; //Size of Packet EthernetUDP Udp; //Define UDP Object float temp; //temp means temperature float speed; float charge; float dataSend[] = {temp, speed, charge}; int temp_ADC; int speed_ADC; int charge_ADC; void setup() {   Serial.begin(9600); //Turn on Serial Port Ethernet.begin(mac, ip); //Initialize Ethernet Udp.begin(localPort); //Initialize Udp delay(1500); //delay } void loop() {     packetSize = Udp.parsePacket(); //Read theh packetSize     if(packetSize>0){ //Check to see if a request is present     Udp.read(packetBuffer, UDP_TX_PACKET_MAX_SIZE); //Reading the data request on the Udp   String datReq(packetBuffer); //Convert packetBuffer array to string datReq     if (datReq =="ordre") { //See if Red was requested       temp_ADC = analogRead(0); //read analog input on pin A0     temp = temp_ADC * 5.0 * 100.0/1024.0; // ADC to celcius conversion      speed = analogRead(1); //read analog input on pin A1     charge= analogRead(2); //read analog input on pin A2     Udp.beginPacket(Udp.remoteIP(), Udp.remotePort());  //Initialize Packet send     Udp.print(temp); //Send string back to client     Udp.print(speed); //Send string back to client     Udp.print(charge); //Send string back to client     Udp.endPacket(); //Packet has been sent     delay(1500); //delay   }      } memset(packetBuffer, 0, UDP_TX_PACKET_MAX_SIZE); }

Posted by SoufianeG 3 years ago


Do I even need a laptop cooler/cooling fan?

I was actually wondering if my laptop even needs a cooler/cooling fans at all? The max temp. that it goes to (I check with HWMonitor) is 49 - 51 degrees. I've heard new laptops going up to 80 degrees or more. So my laptop is still running 30 degress lower. Should i consider getting a laptop cooler at all? I read a review of the belkin laptop cooling stand and it seems very nice. But, I may not even need one at this temp. Or do I? Please shed some light, someone. 

Posted by rseni 8 years ago


Using the TV Tuner card.

When ever i click my tv tuner EX View. The system goes off and i have to start the pc again and afterwards if i click the tv tuner card it works. Then i get a message as follows The system has recovered from a serious error. BCCode : 1000008e BCP1 : C0000005 BCP2 : F734C731 BCP3 : F1C3FACC BCP4 : 00000000 OSVer : 5_1_2600 SP : 2_0 Product : 256_1 C:\DOCUME~1\TVBALA~1\LOCALS~1\Temp\WER5d3b.dir00\Mini070407-02.dmp C:\DOCUME~1\TVBALA~1\LOCALS~1\Temp\WER5d3b.dir00\sysdata.xml Kindly advice

Posted by balatv44 11 years ago


temperature contral Via thermal cupplers

I am just starting out I have built several Bio stoves in the past few years .  The cost of fuel wood,wood chip, saw dust ,grass leaves , brush paper all house hole wastes but plastic bone and metal . are the fuel's it will cook . In the end you are left with Bio dust charcoal and it is a 100% natural soil additive that improves plant growth . No green house gasses . and just a little ash from the fire retaining feeder. Any way I need to control at lease 4 to 5 temperature . all are inter related . all temp. feed backs will control digital speed controls to maintain temp.

Posted by OldManRobbie 3 years ago


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?

Posted by MattH68 2 years ago


arduino Questions

Silly question. Trying to build something that requires an arduino to take a temperature measurement, and pwm an Item dependant on that temp reading. so the question is how many reads and adjustments per second can I aim for? I was hoping to get the 1 MHz area but am assuming less than that at this time

Posted by plucas1 1 year ago


problem with annotate()

Hi im trying to plot live data on python from an arduino through the serial port  i found some difficult with annotate function i don't know how to configure the third parameter (position) python code import serial # import Serial Library import time #import time import numpy  # Import numpy import matplotlib.pyplot as plt #import matplotlib library from drawnow import * temperature= [] vitesse= [] charge= [] current= [] Time = [] arduinoData = serial.Serial('com5', 9600) #Creating our serial object named arduinoData plt.ion() #Tell matplotlib you want interactive mode to plot live data cnt=0 ##fig1 = plt.figure() STARTINGTIME = round(time.time(),2) def makeFig(): #Create a function that makes our desired plot         plt.subplot(2,2,1)     plt.subplot(2,2,1).annotate(str(temperature)+','+ str(Time), textcoords='offset points')     plt.title('Live Streaming Temperature Sensor Data')     plt.ylabel('Temperature C')     plt.grid(True)     plt.plot(temperature, 'ro-')     plt.subplot(2,2,2)     plt.subplot(2,2,2).annotate(str(vitesse)+','+ str(Time), textcoords='offset points')     plt.title('Live Streaming Speed Sensor Data')     plt.ylabel('Speed KM/H')     plt.grid(True)     plt.plot(vitesse, 'bo-')     plt.subplot(2,2,3)     plt.subplot(2,2,3).annotate(str(charge)+','+ str(Time), textcoords='offset points')     plt.title('Live Streaming SOC Sensor Data')     plt.ylabel('Battery Charge %')     plt.grid(True)     plt.plot(charge, 'go-')     plt.subplot(2,2,4)     plt.subplot(2,2,4).annotate(str(current)+','+ str(Time), textcoords='offset points')     plt.title('Live Streaming Current Sensor Data')     plt.ylabel('Current A')     plt.grid(True)     plt.plot(current, 'yo-')     while True: # While loop that loops forever     while (arduinoData.inWaiting()==0): #Wait here until there is data         pass #do nothing     arduinoString = arduinoData.readline() #read the line of text from the serial port     dataArray = arduinoString.split(';')   #Split it into an array called dataArray     temp = float (dataArray[0])     vite = float (dataArray[1])     char = float (dataArray[2])     curr = float (dataArray[3])     temperature.append(temp)                     #Build our temperature array by appending temp readings     vitesse.append(vite)                     #Build our vitesse array by appending temp readings     charge.append(char)                     #Build our charge array by appending temp readings     current.append(curr)                     #Build our current array by appending temp readings     Time.append(round(time.time(),2) - STARTINGTIME)     drawnow(makeFig)                       #Call drawnow to update our live graph     plt.pause(0.00001)     cnt=cnt+1     if(cnt>50):         temperature.pop(0)         vitesse.pop(0)         charge.pop(0)         current.pop(0)

Posted by SoufianeG 3 years ago


Help with annotate function in python

Hi everyone I'm trying to plot live data on Python from an arduino through the serial port. I found some difficulties with annotate function. I don't know how to configure it or whether the place where I have put annotate function is it the the right place or not For example: for every point in temperature, i want the value to be printed next to the point ? this is my python code import serial # import Serial Library import time #import time import numpy  # Import numpy import matplotlib.pyplot as plt #import matplotlib library from drawnow import * temperature= [] vitesse= [] charge= [] current= [] Time = [] arduinoData = serial.Serial('com5', 9600) #Creating our serial object named arduinoData plt.ion() #Tell matplotlib you want interactive mode to plot live data cnt=0 ##fig1 = plt.figure() STARTINGTIME = round(time.time(),2) def makeFig(): #Create a function that makes our desired plot     plt.subplot(2,2,1)     plt.subplot(2,2,1).annotate(str(temperature)+','+ str(Time), textcoords='offset points')     plt.title('Live Streaming Temperature Sensor Data')     plt.ylabel('Temperature C')     plt.grid(True)     plt.plot(temperature, 'ro-')     plt.subplot(2,2,2)     plt.subplot(2,2,2).annotate(str(vitesse)+','+ str(Time), textcoords='offset points')     plt.title('Live Streaming Speed Sensor Data')     plt.ylabel('Speed KM/H')     plt.grid(True)     plt.plot(vitesse, 'bo-')     plt.subplot(2,2,3)     plt.subplot(2,2,3).annotate(str(charge)+','+ str(Time), textcoords='offset points')     plt.title('Live Streaming SOC Sensor Data')     plt.ylabel('Battery Charge %')     plt.grid(True)     plt.plot(charge, 'go-')     plt.subplot(2,2,4)     plt.subplot(2,2,4).annotate(str(current)+','+ str(Time), textcoords='offset points')     plt.title('Live Streaming Current Sensor Data')     plt.ylabel('Current A')     plt.grid(True)     plt.plot(current, 'yo-') while True: # While loop that loops forever     while (arduinoData.inWaiting()==0): #Wait here until there is data         pass #do nothing     arduinoString = arduinoData.readline() #read the line of text from the serial port     dataArray = arduinoString.split(';')   #Split it into an array called dataArray     temp = float (dataArray[0])     vite = float (dataArray[1])     char = float (dataArray[2])     curr = float (dataArray[3])     temperature.append(temp)                     #Build our temperature array by appending temp readings     vitesse.append(vite)                     #Build our vitesse array by appending temp readings     charge.append(char)                     #Build our charge array by appending temp readings     current.append(curr)                     #Build our current array by appending temp readings     Time.append(round(time.time(),2) - STARTINGTIME)     drawnow(makeFig)                       #Call drawnow to update our live graph     plt.pause(0.00001)     cnt=cnt+1     if(cnt>50):         temperature.pop(0)         vitesse.pop(0)         charge.pop(0)         current.pop(0)

Posted by SoufianeG 3 years ago


Help requested for purchase of components

Hi. I'm a newbie to embedding but I have a project that needs this and there is no commercially available solution that I can find so I need to learn how to build it myself. This can and will be done in modules... I figure I can tackle one task at a time until I end up with a complete working system, but use the system in the meant time, as I get it completed. The main goal is for an electric motorcycle conversion dashboard,  which will include a password protected relay switch "ignition key" to power the vehicle on securely (Task #1), a user configurable display to show speedometer, odometer, tripometer, clock, battery pack voltage, motor rpm/temp, controller temp, coolant temp, etc via a waterproof rugged tablet (probably a Windows 10 tablet, probably with an Android emulator installed). I'm finding that there are so many different options available, I don't know what to purchase. I want to spend my hard earned money wisely and just buy what I need the first time. Instead of learning the "hard" way, I want to learn the "smart" way. Please help me get started. Thank you in advance!

Posted by Stevonator 7 months 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


Pulsejet engine turbulence model

Hello everyone i have conducted several pulsejet engine tests but today i tried to simulate a pulseejet engine in Ansys fluent 14.0 and here it is. This is a K-e model. The peak pressure at the instant of combustion was 2.5atm. The maximum velocity reached is about 800m/s and the peak temp was about 3000K.

Posted by ganuganu 5 years ago


Need a cheap Multimeter?

Anyone in need of a cheap multimeter should click this link, print it out and get thee to harbor freight, where they honor the online price. It's their $40 multimeter on sale for $20, Has 30 function inc. freq. to 20kHz and temp to 1000 celsius. I've several of their $3 ones so i couldn't resist this one at this price.

Posted by Tool Using Animal 10 years ago


CANT DOWNLOAD ANYTHING, SAYS TEMPORARY UNAVALIABLE, I JUST PAID FOR PRO

Hi i paid for pro, i tried 2 computers, it wont let me download anything..  I only paid the pro for a certain model and it says it's temp unavaliable can some admin please check up i paid to get the 7ft gundam

Posted by koconnell 4 years ago


Battery circuit for Panasonic EY6431 EY9230

Does anyone have the circuit for these batteries please ? There is a temp overload (bimetalic type) and also a two diode (? zener) + resistor in series that I presume identifies the pack (voltage) to the charger.  I have burnt out pack that I have new cells to rebuild but not certain about the connection / values for those parts. Thanks

Posted by GeoffS15 2 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


Bumblebee Transformer Costume

Materials included a couple of foam camping bed rolls... and a bike helmet. Then we used a hotknife from a craft store to cut and sculpt the foam sheets. We used a low temp hot gluegun to put it all together, then coated the parts we wanted to look shiny with polyeurothane.This type of foam accepted spraypaint well, it didn't eat it at all as it would with styrofoam.

Posted by JadeyPro 10 years ago


Observing &quot;weather&quot; (stratospheric temp.) with cosmic rays

An article in New Scientist reports on an analysis of cosmic ray muon data from the MINOS underground detector, which correlates with "sudden" (24-hour timescale) temperature changes in the stratosphere. The original article in Geophysical Research Letters gives you a good flavor for how this kind of analysis is actually done, and written up for publication. The figure below (Figure 3 of the article) shows the beautiful correlation between the temperature (5-day running average in blue) as measured by sounding balloons, and the muon rate in MINOS (also 5-day running average, red band with uncertainties). The alignment of the two curves is obviously not known a priori. The exact numerical calibration between muon counts (red, right scale) and temperature (blue, left scale) is a fitted output of the analysis, not an input.To me, it's just kind of neat that particle physics can relate so sharply to some "real world" large-scale properties.

Posted by kelseymh 9 years ago


Petrol/diesel still separator

Ok so is any one game to make a basic still that will evaporate petrol into vapor and then reform via cooling into petrol? Where a vehicle that runs on diesel has been filled with petrol, this device could save $1000's. No spark or naked flame to a 100 degree max temp will be safe. there's a challenge! PS garages will give you this stuff for free.

Posted by Gero wheels deals 3 years ago


Broken Portable LCD Screen

Hello everyone... I have a broken LCD screen that went to a dvd player base that was a portable dvd player system, I was wanting to know if it was possible for me to find a way to power this up and use it with my computer, to display system stats like temp, proccessor usage, and things like this, any ideas on if this can be done and how I could do it?

Posted by blumoon94 8 years ago


How to attach a wire to a tiny SMD board

I'm working on moding a cheap mp3 player. I want to relocate the power switch. The SMD components are tiny and I just destroyed a small component (diode) with my weller temp controlled soldering iron. Any suggestions on how to attach a small wire to a really tiny spot (1.5mm x 2mm),

Posted by ifranz 9 years ago


&quot;Unextract&quot; Converted Batch Files

Have you ever wondered how to do something in batch that someone has already done and wrapped it nicely in a little .exe file? Some people like to keep their batch programming secrets to themselves, and don't want to share, so then convert their batch file to .exe. But you can't discover their secrets if they have converted it to .exe, because all you will find is gibberish. Before I will tell you how to "unextract" an .exe, you must now how ".bat to .exe" programs work. What they basically do is "wrap" a batch file with an executable; think about a Christmas present. Pretend the gift inside is the secrets of the batch file, and the wrapping on the outside is like the executable, which prevents you from "seeing" the secrets inside. But this is no ordinary present, the wrapping on the outside can not be torn or opened, you must press a button in order to to "unwrap" it. But when it "unwraps", it shows you what it is, but hiding the secrets. If you couldn't fully understand that, here is what actually happens. Try to compare the two.Batch files in executable form cannot be viewed as the batch language. If you open it in notepad, you will get a whole bunch of symbols. In the philosophy above, pressing the "button" is the same as opening the file as an executable. It opens just like a batch file, but if you try to edit it, you won't be able to read it. What the executable does, is temporarily extracts the batch file within it, to a temp folder.Now to the "how to" part. Here is where that "temp" (temporary) folder is: %userprofile%\Local Settings\TempNow all you have to do is copy and paste that into a windows explorer address bar. You will now be in a temp folder where the batch file will be dumped. Now you have to run the .exe file. But now you do have to get your hands dirty (virtually!). Search in each folder till you find a batch file, most commonly called batchfile.bat. Simply right click, press edit, and your in!So that's how to "unextract" a converted batch file! (note: I didn't make it an instructible because, well, no one likes a one step instructable!)Good Luck!

Posted by Arbitror 9 years ago


Rex C100 temperature controller - changing settings

I recently ordered a REX C100 for my electric melting furnace project. As it came already with a SSR and temp sensor I only added a sensor capable of reading more than 400° of the supplied one. These controller are dirt cheap and have lots of support in the modding community - although you now can get them new in all variations so no more modding required. Internally they run on 12V DC, so even mobile use is possible (but this time after modding). My problem with this controller started with the not included manual. As it is no China clone but an original from RKC Japan, I downloaded their manual and tried to adjust the max temp settings as well as changing to the thermocouple. To my surprise the menus for that simply did not exist on my model. Reading a few more manuals showed that to get to the "initial or factory setup" you need to change the lock code. Here things get confusing: Once in the lock menu setting most manuals state to enter "0000" to activate the hidden menus. (Mine was alreay on 0000) Others state to set the code to "0100". In any case you have to hold the setup key for a few seconds to store the changes and after that hold the settings and shift key for about 5 seconds to enter these factory menus. After being close to send the unit back I tried different code combinations and finally found that "1000" actually activates the hidden menu on my model! But again there was no joy as several vital settings still did not show up. To finally get all settings another step is required: The first item in the hidden menu is "CODE" and it shows as "0000". After changing this to "0001" the setup key can be used to get to the settings to change the max and min temps. Once all this done the controller actually shows the selected sensor and if Celsius or Fahrenheit is used at the start and from now on simply by clicking through the hidden menu with the setup key you can get to the min and max temp settings again. I hope this info will help someone running into the same brick walls as I did...

Posted by Downunder35m 3 years ago


VACUUM CHAMBER for DRYING ELECTRONICS

Some time back, it occurred to me that a sufficiently strong vacuum would be useful for drying wet electronics. After all, water boils at lower temps at higher elevations, and in space, water will even boil at 33F ( 1 C) Freeze-drying coffee is another example of using high vacuum to desicate stuff. I hooked up a vacuum pump which had been marketed for bleeding hydraulic brakes and clutches to a pressure chamber for extending the life of tennis balls.  It did not seem to work when I tried rapid drying a damp paper towel. Indeed, my control, another paper towel left out at room temps dried before the one in the vacuum chamber. I think I've heard of repurposing a refrigeration pump to act as a vac-pump. Someday, I may try that, but would prefer not to have to deal with the freon. Besides that, if someone is scrapping a fridge, and I can pick it up free, will the pump be any good?

Posted by Toga_Dan 4 years ago


I think I won the silicon lottery.

Just though I'd show you this. PC Specs: i7 2600k @ 4429MHz 8GB Corsair Vengeance + 8GB GSkill Ripjaws X @ 1600MHz (Not currently in the machine) Asus P8P67 Pro Corsair H80 with the fans off of a Thermaltake Frio Thermaltake Chaser MK I Chassis AMD Radeon 5770

Posted by Millawi Legend 6 years ago


solar garage heater

I would like to build a solar panel to heat my garage.  I intend to use a 4x8 used piece of glass, 2x4s, and cardboard tubing.  I can handle this part.  I need help with the air circulation.  I would like to have a solar fan come on when the temp inside reaches 70F.  What parts do I need and how do I connect the parts?

Posted by willpaul 3 years ago