Temperature sensing with the Raspberry Pi

RE: Temperature sensing with the Raspberry Pi

Former Member — Wed, 26 Dec 2012 18:46:37 GMT

Example with two TMP102 sensors:

[View:/resized-image/__size/596x200/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-b609c25e-77bf-40d7-86d0-8f2b31aceaaa/contentimage_5F00_176002.jpg:596:200]

RE: Temperature sensing with the Raspberry Pi

Former Member — Fri, 07 Sep 2012 22:00:12 GMT

Really cool. I'm quite new to this kind of stuff so my question might be stupid, but is it possible (or hard) to connect multiple temperature sensors to the RPi?

RE: Temperature sensing with the Raspberry Pi

fustini — Sat, 01 Sep 2012 18:56:21 GMT

fyi - the Adafruit Occidentalis v0.2 image now supports the tmp102:

root@raspberrypi:~# modprobe tmp102
root@raspberrypi:~# lsmod
Module Size Used by
tmp102 3558 0
hwmon 1977 1 tmp102
rtc_ds1307 7602 0
i2c_dev 6423 0
snd_bcm2835 21781 0
snd_pcm 87261 1 snd_bcm2835
snd_seq 67042 0
snd_timer 21734 2 snd_seq,snd_pcm
snd_seq_device 6928 1 snd_seq
snd 61480 5 snd_seq_device,snd_timer,snd_seq,snd_pcm,snd_bcm2835
snd_page_alloc 5411 1 snd_pcm
spidev 5600 0
evdev 9780 0
spi_bcm2708 5386 0
rpi_pwm 7203 0
i2c_bcm2708 3834 0
root@raspberrypi:~# echo tmp102 0x48 > /sys/class/i2c-adapter/i2c-0/new_device
root@raspberrypi:~# sensors
tmp102-i2c-0-48
Adapter: bcm2708_i2c.0
temp1: +26.6°C (high = +160.0°C, hyst = +150.0°C)

RE: Temperature sensing with the Raspberry Pi

Former Member — Thu, 30 Aug 2012 16:18:28 GMT

Just curious...but wanted to make sure, can you interface the TMP102 without the RTC stuff?

RE: Temperature sensing with the Raspberry Pi

morgaine — Thu, 26 Jul 2012 20:42:20 GMT

The I2C bandwagon picks up speed. I have a little I2C project in the works too, details if it ever surfaces. [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-b609c25e-77bf-40d7-86d0-8f2b31aceaaa/contentimage_5F00_2516.png:16:16]

In case people were wondering where it came from, the "sensors" command is one of the utilities in the Debian "lm-sensors" package, so just "apt-get install lm-sensors" if you're missing it. (sys-apps/lm_sensors in Gentoo.)

Morgaine.

RE: Temperature sensing with the Raspberry Pi

recantha — Thu, 26 Jul 2012 20:27:17 GMT

Great stuff, Drew. Great route to beginners practical electronics!