This is for questions pertaining to the acceptable temperature ranges for the Pi and its respective parts.

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1answer
60 views

Temperature differences between CPU & GPU

So recently I was interested in CPU and GPU temperatures and did some work displaying the temperatures in real time on a page and also recording the temperatures on a graph using rrdtool (which is ...
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0answers
10 views

Sensor for very low temperature (liquid nitrogen) [migrated]

I'm looking for a way to measure temperatures in range of 40 to -200 °C (100 to −320 °F). The usual DS18B20 digital thermometer works only down to -55 °C (-67 °F). A precision of 2 °C would be good ...
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0answers
64 views

Raspberry Pi B won't recognise DS18B20 sensor

I have wired up my Raspberry Pi (RPI-0007) to the pins as outlined by http://www.modmypi.com/blog/ds18b20-one-wire-digital-temperature-sensor-and-the-raspberry-pi. However, when I change directory to ...
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1answer
52 views

LM35 long electric wire [closed]

I want to measure temperature on Pi with LM35 sensor. I have cables like this it's 4 x 0.75mm^2 and the longest is about 10 meters. I can't change them to UTP. Is this gonna work on this cables or ...
2
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1answer
220 views

Raspberry Pi, LM35 and MCP3008

I want to use Raspberry Pi to measure temperature using LM35 sensors (15-30 Celsius degrees). I can't power up the sensor with 3,3V because it requires at least 4V and also I need about 10 sensors ...
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2answers
69 views

Sensor Question

I am following this tutorial: http://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/temperature/. The problem is I don't have that specific temperature sensor on me. Since I don't have that specific ...
3
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1answer
52 views

Rasberry Pi 2 analog inputs

I am a newbie with the Raspberry Pi. I want to measure temperature from 16 sensors. Is it possible to have 16 analog inputs? If not what controller should I use, I need something with web server.
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2answers
76 views

What can damage my Pi or make it unusable? [closed]

Having seen this Post rest-in-pieces-where-is-the-pi-graveyard on Meta I am wondering what kinds of things are to be avoided. I would like to learn what NOT to do in order to keep a Pi healthy and in ...
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0answers
78 views

Pi Zero BOM component temperature range concern

I want to buy quite a few the Pi zero boards for outdoor use. Can you help get the BOM if possible, I want to confirm the temperature range for each component (the 19.2Mhz crystal, the caps and so ...
2
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2answers
59 views

Any remote sensors for the Rasperry Pi?

I would like to build a temperature/humidity station with the PI, but I need several remote sensors to distribute around my house (crawlspace, attic, various rooms where I have plants, and yes, ...
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1answer
55 views

Automating my fan based off of the CPU temperature

I just got a fan for my Raspberry Pi 2 model B. It uses the GPIO pins. The fan works well but makes a lot of noise. I want to get the fan to switch on and off depending on the temperature of the pi. ...
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0answers
10 views

Make a temperature control unit [duplicate]

I have got two sensors that give a resistance as function of the temperature. I would like to see the device switching on the power for a power outlet when the temperature difference is larger than a ...
3
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1answer
243 views

How do I read the GPU temperature in C?

I am making a graph on the temperature using a NTC resistor and also by reading the CPU temperature, however I'd also like to read the GPU temperature. I read this answer explaining briefly how to ...
2
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1answer
382 views

DS18B20 no longer working

I had two of these running fine, but now they've stopped. From reading I've done I think this has something to do with kernel updates and device tree. There seems to be about half a dozen options now ...
2
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0answers
73 views

Reading temperature of CPU crashing eventually

I am running the newest version Linux raspberrypi 4.1.10-v7+ #820 SMP PREEMPT Sun Oct 4 16:26:51 BST 2015 armv7l GNU/Linux on an RPi 2, And when I read the temperature pf the CPU though any method my ...
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1answer
39 views

Converting 3.3V input to degrees Fahrenheit

I have a temp sensor (TMP 36) the same one used in the guide I am following here. I have impossible temp output. Anyone know what I did wrong? 216 temp (def F): 116582.0 216 temp (def F): 116582.0 ...
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0answers
47 views

The high temperature of the CPU when starts

I have a little problem with my Raspberry Pi 2 Model B. When I turn on the Raspberry Pi, the CPU is very hot (>90oC)for the first few seconds. The Raspberry Pi is connected with a 12V power supply and ...
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0answers
113 views

Raspberry Pi 2 and DS1621

I am connecting temperature sensor, DS1621 with Raspberry Pi 2. Pin 5,6,7 and 8 of DS1621 is connected to 3.3V and pin 1 is connected to SDA, pin2 is connected to Clock and pin 4 is connected to GND. ...
2
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2answers
100 views

Where to put heat sinks on Raspberry Pi?

I currently have the Raspberry Pi Model B. I got some three heatsinks, one large two small (the large is about the size of the Broadcom chip, small is the ethernet/usb(?) chip). I use my raspberry pi ...
2
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1answer
157 views

Trying to use TMP36 via MCP3008 on Windows 10 iot

Can't get this working right. Any help very appreciated! I have a TMP36 on channel 0 of MCP3008 analog to digital converter then into my Raspberry Pi 2. My code and wiring is in the zip available at ...
0
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1answer
153 views

Raspberry Pi 2 beeps when overheating?

I was compiling OpenCV for the first time on a Raspberry Pi 2 today. This process takes about 2.5 hours and continuously pushes the RPi to the processing limits it's capable of. About 30-40 minutes ...
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0answers
185 views

Raspberry Pi 2 : DHT11 : Oracle Java ME Embedded

Anyone integrated DHT11 temperature sensor on Raspberry Pi2 with Oracle Java ME Embedded system? Any direction will be helpful.
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0answers
8 views

How can I install the KY-001 temperature sensor on my Raspberry Pi 2 B? [duplicate]

I'm a beginner and know basically nothing about Raspberry Pi. Recently I bought a sensor kit and a breadboard, but there are no tutorials for them. So how can I, for example, install a temperature ...
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1answer
1k views

Why is my Raspberry Pi 2 so hot?

I have one raspberry PI and two PI-2, side by side, inside a little cupboard. I'm constantly monitoring their temperature. I'm worried because one of the Pi-2 is quite hot. The PI and the hot PI-2 ...
2
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5answers
155 views

How do I retrieve data from another Pi on the same network?

I would like to combine two tutorials (here and here) that I have found on sensing temperature with Raspberry Pis. I am already able to retrieve the temperature from the DS18B20 on multiple pis. ...
3
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1answer
353 views

DS18b20 temperature sensor not found [duplicate]

Trying to install DS18b20 temperature sensor but it looks like the RPi cannot find it. From console: sudo modprobe w1-gpio sudo modprobe w1-therm cd /sys/bus/w1/devices/ ls But there is nothing ...
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2answers
128 views

Raspberry Pi failing to read sensors in -20 degree F

I am currently developing a sensor box and plan on running it outside. Temperatures can get as low as -40 degrees F and once my box reaches an internal temperature of 32.18 degrees F it fails to read ...
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3answers
5k views

DS18B20 temperature sensor not registered - debugging?

Like other posters I have connected the temperature sensor (from ModMyPi Hacker Kit) a variety of ways and can not get my Raspberry Pi 2 to recognise it. I have unsuccessfully followed posts to ...
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2answers
3k views

How to hook up an AM2302 temperature & humidity sensor several feet away from the Raspberry pi?

I have a raspberry pi running pipgio and am using the provided code under the python section to get the temperature and humidity reading from the AM2302 (http://www.adafruit.com/products/393). If I ...
4
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1answer
337 views

GPIO Temperature Sensor not Recognized

I recently tried to connect a temperature sensor (http://www.adafruit.com/product/381) to my RasPi via the GPIO, with a 4.7k (2Watt) resistor connecting the power and data (Source: ...
3
votes
1answer
888 views

DS18B20 not fully working on Raspberry Pi

I've followed instructions through various sites which have all given the same information about wiring the DS18B20 sensor to a Raspberry Pi (red is 3.3V, black is ground, white connects to GPIO pin 4 ...
10
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1answer
6k views

DS18B20 not listed in /sys/bus/w1/devices

I'm starting work on a fermentation monitor using the Adafruit temperature sensing tutorial, a RPi B+ running Raspbian, a 4.7 kOhm resistor and a DS18B20 to which I've soldered male breadboard pins. ...
3
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1answer
248 views

Monitor temperature in fahrenheit

Using raspbian right now. I know you can add the temperature plugin to the panel, but it only shows Celsius. How can this be changed? Or is there another program I can use that will work better?
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1answer
292 views

Pi dead: U3 IC gets extremely hot

I got two Pi's, and both of them have the same problem. To the first one, I connected a 3.3V power supply to pin 1, following which the board didn't boot and no LEDs lit. The board seems to be dead, ...
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1answer
138 views

How do I monitor the temperature ever 3 seconds without entering new commands?

I just bought a heat sink kit for my pi and I'm using Raspbian and would like to monitor the temperature continuously every 3 seconds via SSH while I perform tasks on the pi so that I don't have to ...
2
votes
1answer
189 views

One wire temperature sensor DS18B20 sudden precission drop

I wired 10 DS18B20 to the raspberry pi, in the normal powered mode. I am using the Raspbian's built in w1-gpio and w1-therm. I am able to read all the 10 sensor values. Problem is, after (seemingly ...
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3answers
3k views

What is a failproof method for testing a GPIO pin?

So, basically, I've been trying to get my raspberry pi to get the room temperature from a DS18B20 1-wire temperature sensor. I've read only GPIO 4 is capable of this, and I think for some reason GPIO ...
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0answers
87 views

Did my Pi lockup or was it halted?

I couldn't connect to my Pi this morning until I turned it off and on again. I did this at around noon, didn't record the exact time, thereafter it connected via ssh. My sys.log state: Sep 18 ...
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0answers
186 views

Sensor DS18B20 - i2C - weird response

I'm using the raspberry pi (model B) with the DS18B20 to read temperature. I connected 9 sensors through the 1wire (port 4), however I'm having a few sensors with a weird problem. The sensors ...
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1answer
150 views

My Pi can boot but extremely hot. HELP!

After trying the GPIO, my PI cannot not boot. Few weeks later, the polyfuse seems recovered and it can be boot. But the CPU is very hot and reach 80C. The USB port is not work and the PI is ...
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2answers
293 views

using the temperature command in a bash script to affect gpio

I have a led connected to a gpio pin using wiringpi, and I am trying to have it affected by the temperature reported by /opt/vc/bin/vcgencmd measure_temp I have this command in an executable file ...
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2answers
862 views

'Safe' temperatures for use

So I need to measure the temperature in my conservatory, and with all the doors shut on a summer's day it gets pretty toasty (uncomfortable for more than a few seconds). My question is what sort of ...
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2answers
490 views

One Wire Temperature auto setup while booting

I have temperature sensor (DS18B20), also known as a 'one-wire sensor'. I've connected it to pin 4. I am using this code that someone wrote (source). #!/usr/bin/env python import time ...
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2answers
112 views

A Shortcut For Checking Temps?

So I live in California and it is really hot so I worry about my RPI temperatures. I want a really easy way to check right now I have used the GNU Nano program to make a bash alias so when I type temp ...
2
votes
2answers
1k views

IndexError DS18B20 Temperature sensor

I have this temperature sensor (DS18B20). I've followed the tutorial on Adafruit (here). First I had to setup some modules by doing: sudo modprobe w1-gpio sudo modprobe w1-therm Then I check the ...
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1answer
135 views

Whats the optimal temperature for the Pi's processor to run at?

At what temperature will the Pi's processor work fastest?
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1answer
122 views

Housing and temperature

I'm creating a cute wooden box for my pi as XBMC + webServer. As I want the system to stop using energy when switched off I included the 5v 1a transformer in the case, and put the switch between the ...
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0answers
66 views

Protecting the RPi against Moisture in a Refrigerator [duplicate]

Refrigerator This is a follow up to my previous question here. My chest freezer came in yesterday, and I brewed two batches of homebrew and placed them in last night. This morning, I couldn't wait ...
1
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1answer
257 views

Permission Denied for CPU Temperature Query

When i login as root user into my Rapsberry Pi, then i query for temperature using this command; pi@raspberrypi ~ $ /sys/class/thermal/thermal_zone0/mode -bash: ...
3
votes
3answers
736 views

Using the Raspberry Pi Cam at 110 degrees Celsius

A CCD camera is required to be placed in a hot environment of up to 120 deg Celsius. I am thinking of using the Raspberry Pi Camera Module which I already have. However I am unable to find any specs ...