[PLUG] Temperature and Raspberry Pi.

Chuck Hast wchast at gmail.com
Tue Jan 17 08:08:03 UTC 2017 

Here is a art. from Mar 13 this year, so it should be running Jessie code.
I would
give it a lookÑ

https://pimylifeup.com/raspberry-pi-temperature-sensor/

If you google RPi temperature sensors there are pages of information on this
one.  Looks like everyone and his/her dog is using RPi to measure
temperature.


On Mon, Jan 16, 2017 at 11:48 PM, Michael C. Robinson <
michael at robinson-west.com> wrote:

> I am using a Raspberry Pi 3 2016 Model B.
>
> I'm trying to use USB TEMPer2 Thermometers to detect the temperature
> of ice water and the temperature of nearly boiling water.  I am not
> getting the correct temperatures.
>
> pi at raspbypi:~/project $ cat temper-pi.txt
> http://www.linuxjournal.com/content/temper-pi
> pi at raspbypi:~/project $
>
> pi at raspbypi:~/project $ lsusb
> Bus 001 Device 010: ID 0c45:7401 Microdia
> Bus 001 Device 009: ID 0c45:7401 Microdia
> Bus 001 Device 008: ID 0c45:7401 Microdia
> Bus 001 Device 007: ID 0409:0058 NEC Corp. HighSpeed Hub
> Bus 001 Device 005: ID 0a81:0205 Chesen Electronics Corp. PS/2
> Keyboard+Mouse Adapter
> Bus 001 Device 011: ID 0c45:7401 Microdia
> Bus 001 Device 006: ID 0c45:7401 Microdia
> Bus 001 Device 004: ID 0409:0058 NEC Corp. HighSpeed Hub
> Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
> SMSC9512/9514 Fast Ethernet Adapter
> Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> pi at raspbypi:~/project $
>
> pi at raspbypi:~/project $ lsusb -t
> /:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=dwc_otg/1p, 480M
>     |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/5p, 480M
>         |__ Port 1: Dev 3, If 0, Class=Vendor Specific Class,
> Driver=smsc95xx, 480M
>         |__ Port 2: Dev 4, If 0, Class=Hub, Driver=hub/4p, 480M
>             |__ Port 1: Dev 6, If 0, Class=Human Interface Device,
> Driver=, 1.5M
>             |__ Port 1: Dev 6, If 1, Class=Human Interface Device,
> Driver=, 1.5M
>             |__ Port 4: Dev 11, If 0, Class=Human Interface Device,
> Driver=, 1.5M
>             |__ Port 4: Dev 11, If 1, Class=Human Interface Device,
> Driver=, 1.5M
>         |__ Port 3: Dev 5, If 0, Class=Human Interface Device,
> Driver=usbhid, 1.5M
>         |__ Port 3: Dev 5, If 1, Class=Human Interface Device,
> Driver=usbhid, 1.5M
>         |__ Port 4: Dev 7, If 0, Class=Hub, Driver=hub/4p, 480M
>             |__ Port 1: Dev 8, If 0, Class=Human Interface Device,
> Driver=, 1.5M
>             |__ Port 1: Dev 8, If 1, Class=Human Interface Device,
> Driver=, 1.5M
>             |__ Port 2: Dev 9, If 0, Class=Human Interface Device,
> Driver=, 1.5M
>             |__ Port 2: Dev 9, If 1, Class=Human Interface Device,
> Driver=, 1.5M
>             |__ Port 4: Dev 10, If 0, Class=Human Interface Device,
> Driver=, 1.5M
>             |__ Port 4: Dev 10, If 1, Class=Human Interface Device,
> Driver=, 1.5M
> pi at raspbypi:~/project $
>
> pi at raspbypi:~/project/temper-python $ cat take_temps.bash
> #!/bin/bash
>
> while (true)
> do
>         sudo temper-poll -p
>         sleep 10
> done
>
> @raspbypi:~/project/temper-python $ ./take_temps.bash
> Found 5 devices
> Device #0 (bus 1 - port 4): 25.1°C 77.1°F
> Device #1 (bus 1 - port 2): 24.1°C 75.3°F
> Device #2 (bus 1 - port 1): 21.5°C 70.7°F
> Device #3 (bus 1 - port 4): 23.8°C 74.9°F
> Device #4 (bus 1 - port 1): 23.2°C 73.8°F
> Found 5 devices
> Device #0 (bus 1 - port 4): 25.1°C 77.1°F
> Device #1 (bus 1 - port 2): 24.1°C 75.3°F
> Device #2 (bus 1 - port 1): 21.5°C 70.7°F
> Device #3 (bus 1 - port 4): 23.8°C 74.9°F
> Device #4 (bus 1 - port 1): 23.2°C 73.8°F
> Found 5 devices
> Device #0 (bus 1 - port 4): 25.1°C 77.1°F
> Device #1 (bus 1 - port 2): 24.1°C 75.4°F
> Device #2 (bus 1 - port 1): 21.5°C 70.7°F
> Device #3 (bus 1 - port 4): 23.8°C 74.9°F
> Device #4 (bus 1 - port 1): 23.2°C 73.8°F
> Found 5 devices
> Device #0 (bus 1 - port 4): 25.1°C 77.1°F
> Device #1 (bus 1 - port 2): 24.1°C 75.4°F
> Device #2 (bus 1 - port 1): 21.5°C 70.7°F
> Device #3 (bus 1 - port 4): 23.8°C 74.9°F
> Device #4 (bus 1 - port 1): 23.2°C 73.8°F
> Found 5 devices
> Device #0 (bus 1 - port 4): 25.1°C 77.1°F
> Device #1 (bus 1 - port 2): 24.2°C 75.5°F
> Device #2 (bus 1 - port 1): 21.5°C 70.7°F
> Device #3 (bus 1 - port 4): 23.8°C 74.9°F
> Device #4 (bus 1 - port 1): 23.2°C 73.8°F
> Found 5 devices
> Device #0 (bus 1 - port 4): 25.1°C 77.1°F
> Device #1 (bus 1 - port 2): 24.2°C 75.5°F
> Device #2 (bus 1 - port 1): 21.5°C 70.7°F
> Device #3 (bus 1 - port 4): 23.8°C 74.9°F
> Device #4 (bus 1 - port 1): 23.2°C 73.8°F
> ^C
>
> Please note the following changes to Raspbian, Jessie I believe...
>
> pi at raspbypi:~/project/temper-python $ cat /boot/cmdline.txt
> dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1
> root=/dev/mmcblk0p7 rootfstype=ext4 elevator=deadline fsck.repair=yes
> rootwait quiet splash plymouth.ignore-serial-consoles
> usbhid.quirks=0x0c45:0x7401:0x4
>
> pi at raspbypi:~/project/temper-python $ cat /etc/udev/rules.d/99-
> tempsensor.rules SUBSYSTEMS=="usb", ACTION=="add",
> ATTRS{idVendor}=="0c45", ATTRS{idProduct}=="7401", MODE="666"
>
> The above changes allow non non root users to use temper-python and
> they should prevent problems with the sensors being identified as
> keyboards?
>
> The following is an excerpt out of dmesg:
>
> [  206.199665] usb 1-1.2.1: new low-speed USB device number 14 using
> dwc_otg
> [  206.317607] usb 1-1.2.1: New USB device found, idVendor=0c45,
> idProduct=7401
> [  206.317619] usb 1-1.2.1: New USB device strings: Mfr=1, Product=2,
> SerialNumber=0
> [  206.317626] usb 1-1.2.1: Product: TEMPer2_M12_V1.3
> [  206.317633] usb 1-1.2.1: Manufacturer: RDing
> [  206.409673] usb 1-1.2.4: new low-speed USB device number 15 using
> dwc_otg
> [  206.527634] usb 1-1.2.4: New USB device found, idVendor=0c45,
> idProduct=7401
> [  206.527645] usb 1-1.2.4: New USB device strings: Mfr=1, Product=2,
> SerialNumber=0
> [  206.527653] usb 1-1.2.4: Product: TEMPer2_M12_V1.3
> [  206.527659] usb 1-1.2.4: Manufacturer: RDing
>
> I noticed that the Linux Journal article is old and that the sensors I
> have are likely newer than when the article was written.  The seller
> said Linux compatible, but is that true?
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>



-- 

Chuck Hast  -- KP4DJT --
Glass, five thousand years of history and getting better.
The only container material that the USDA gives blanket approval on.

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