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

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1answer
41 views

Tasks that increase Temperature

I have the following working conditions Raspberry Pi 2 Raspbian Jessie with PREEMPT-RT patch connecting remotely using ssh Wifi adapter is connected (edimax) setting max_usb_current=1 running htop ...
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2answers
110 views

Connecting DS18B20 temperature sensor with RJ45 connector?

I have bought DS18B20 with RJ45 port on its end. It is dumb idea to connect it directly to the Ethernet port on the Pi? I did so, tried reading the temperature (http://www.reuk.co.uk/DS18B20-...
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0answers
15 views

Raspberry Pi Platform

I need an controller to control a couple of SSR and temperature sensors. The question I'm asking is if I am thinking the right platform with the Rasp Pi instead of an Arduino or Pix. The reason that I ...
0
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0answers
45 views

What is the alternative IC to LAN9512 or LAN9514? this chip too HOT

I am building a companion board with the Compute Module, USB & ethernet capability and running it 24/7 is part of the requirement. The standard practice would follow and use the same USB to ...
2
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0answers
20 views

USB devices gets new ttyU* while still attached raspberry pi 2

Conditions: I use RP2 for data collection purposes and i am testing its limits. I use it next to diesel engine and its alternator.(I know pi is not for industrial use and this is a prototype.) There ...
3
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1answer
138 views

What does the yellow square mean?

I was running this code: for value in range(1,1000001): print(value) And as it was running i noticed a yellow square in the upper right corner. I know that the red & rainbow squares mean ...
3
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1answer
161 views

How does a Raspberry Pi deal with high temperature?

Is there a overheating protection circuit integrated into the Raspberry Pi like in desktop processors from Intel or AMD? When I did research about this question I just found vendor specification about ...
0
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1answer
56 views

I am having one problem temperature sensor in Raspberry Pi3

pi@raspberrypi:~/Desktop/iot $ sudo modprobe w1-gpio pi@raspberrypi:~/Desktop/iot $ sudo modprobe w1-therm pi@raspberrypi:~/Desktop/iot $ cd /sys/bus/w1/devices pi@raspberrypi:/sys/bus/w1/devices $ ls ...
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1answer
48 views

DS18B20 temperature sensor not working on Raspberry Pi 3 Model

I've connected a temperature sensor (DS18B20) to my Pi and want to read it using 1-wire, but it doesn't work. I have loaded the w1-gpio and w1-therm modules, added them to /etc/modules and rebooted a ...
0
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1answer
41 views

How can i use 2 temperature sensors with raspberry pi?

How can i use 2 temperature (ds18b20) sensors with raspberry pi? If I can, what gpio pins should I use and how? So what pin can i use instead of gpio 4...
0
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1answer
52 views

How to get the accurate temperature readings from DHT11 sensor on GrovePi+?

I am using DHT11 and GrovePi+ shield with Pi 2 running Raspbian Jessie. The following is the function call for the sensor to fetch current humidity and temperature [ temp,hum ] = dht(...
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2answers
52 views

Highest safe temperature for overnight operation

I want to leave my Pi 3 on overnight doing a Mathematica calculation. What temperature would you say is too high to be at constantly for 8 hours? Would 65C be too high? EDIT: I am aware of the ...
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3answers
77 views

Physical stress testing a Pi

I am sure many people have bench marked Raspberry Pi's, but what about physical tests? These include maximum and minimum operating temperatures, what force has to be applied to the PCB to break, e.t....
0
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1answer
108 views

Could my RPi overheat in the summer?

I'm planning on using a RPi 3 as security camera, so naturally it would be running 24/7. My OS is Motion Eye OS and I believe it's fairly hard on the CPU. Summers can be relatively hot where I live (...
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0answers
224 views

Why does the Sense Hat / Astro Pi show the wrong temperature and humidity?

I recently bought the sense-hat, previously called astro-pi. Unfortunately the temperature shows 28 to 31 degrees Celsius from both temperature sensors on the board. They often show around 30 degrees ...
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0answers
27 views

Digital temperature sensor XC-4432 not detected properly

I have an XC-4432 digital sensor from Duinotech (an Arduino compatable board). Treating it like the DS18B20 gives my behaviour identical to https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=...
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0answers
25 views

How can I remove a one wire temperature sensor [duplicate]

I've just connected several waterproof DS18B20 sensors to my Raspberry Pi B+ V1.2 running Jessie Lite. I get the list of sensors attached by ls /sys/bus/w1/devices and I can see all the devices. ...
1
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1answer
81 views

Why are one wire temperature sensor readings so slow?

I've just connected several waterproof DS18B20 sensors to my Raspberry Pi B+ V1.2 running Jessie Lite. Working on the command line, why does it take so long to display the contents of the sensor's ...
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0answers
247 views

OpenHAB Exec Binding SH File for DHT22

I am running a script to read the temperature of a DHT22 and is working over the command line. temp.sh #!/bin/sh case $1 in config) cat <<'EOM' graph_title Temperatur graph_vlabel ...
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3answers
1k views

Do I need to use a heat sink?

I ordered a Pi 3 and accessory kit here from Amazon, it comes with 2 heat sinks. I won't be overclocking the Pi, would I still need to worry about heat issues? Eventually, this will be in an enclosed ...
1
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1answer
1k views

What are the cooling requirements for Raspberry Pi 3?

The new Raspberry Pi 3 has been beefed up from the previous version. Now it comes with a Broadcom BCM2837, which is an ARM v8 quad-core Cortex-A53, clocked at 1.2GHz. I have also seen somewhere a ...
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1answer
54 views

Difference between …/thermal_zone0/temp and …/thermal_zone0/subsystem/thermal_zone0/temp?

To read the temperature in Raspbian (and most other systems) you can read the file /sys/class/thermal/thermal_zone0/temp, which will output the temperature in millicelsius, like this: pi@raspberrypi0 ...
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1answer
129 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 ...
2
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0answers
108 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 /...
1
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1answer
104 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
609 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 ...
5
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2answers
81 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
144 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
81 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 ...
2
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0answers
130 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 on)....
2
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2answers
77 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, ...
1
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1answer
386 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. I'...
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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
votes
1answer
304 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 ...
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2answers
1k 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
105 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
79 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
66 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
164 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
votes
2answers
173 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
votes
1answer
233 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 ...
1
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1answer
243 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
263 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 ...
13
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1answer
2k 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
210 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
votes
1answer
503 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 ...
4
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2answers
138 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 ...
2
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3answers
6k 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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3answers
4k 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 ...