Temperature, Humidity, Pressure and Light Intensity/Color Data Logger

[Benjamin Smith]

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For anyone who may have a need for one, I figured I would share an
open-source data logger I've designed and built that records air
temperature, pressure, humidity, light intensity and light color:
https://github.com/Llamero/Light_Color_and_Intensity_Datalogger

The temperature, pressure and humidity logging are especially helpful for
monitoring core facilities to help ensure the room environment stays within
specifications for the equipment.  The light sensor also has a massive
dynamic range of 600,000,000:1 and a minimum sensitivity below 1 nW/cm^2
(the lowest intensity our calibrated meter could measure).

If you have never built or ordered a PCB board, I also wrote up a quick
ordering/assembly guide (it's easier and cheaper than you think):
https://github.com/Llamero/Light_Color_and_Intensity_Datalogger/blob/master/Data%20logger%20assembly%20manual.pdf

For those that have never reflow soldered, reflow PCB board assembly in
general requires no special skills other than being able to put parts in
the right place, and can even be done with a skillet:
https://www.sparkfun.com/tutorials/59.  This makes reflow PCB assembly very
similar to a Lego kit, and this one only has 20 parts.  The Teensy also
mounts to a double-wide header that breaks out all the pins, so that
additional peripheral components can be easily attached, such as wifi or
bluetooth breakout boards: https://www.adafruit.com/product/2999.

The logger is driven by a Teensy 3.6 so it can be programmed similarly to
an Arduino, and a user interface has already been implemented for it:
https://github.com/Llamero/Light_Color_and_Intensity_Datalogger/tree/master/Datalogger_Driver


The logger records the data points to an SD card as a *.csv file:
https://github.com/Llamero/Light_Color_and_Intensity_Datalogger/tree/master/Sample%20Log%20Files


With a sample rate of 2Hz the logger can record for over 200 days on a
single battery pack, and 5.2 years on a single SD card.  The battery packs
are hot-swappable and/or the logger can be externally powered via USB for
continuous operation.

Here are a few additional specs:
Current draw: 250 µA on standby, 700 µA while sampling (depending on the SD
card)
Sample rate: 1 Hz to 1e-8 Hz (once every 8 months)
Samples per file: 65535 (Excel compatible)
SD Format: FAT32
Air sensor: BME280 (https://www.adafruit.com/product/2652)
Light sensor: TSL2591 (https://www.adafruit.com/product/1980)
Color Sensor: TCS34725 (https://www.adafruit.com/product/1356)

If you have any questions or suggestions, please feel free to send me an
email or post them on the repository.

Cheers,
   Ben Smith

--
Benjamin E. Smith, Ph. D.
Imaging Specialist, Vision Science
University of California, Berkeley
195 Life Sciences Addition
Berkeley, CA  94720-3200
Tel  [phone]
Fax [phone]
e-mail: [hidden email]
https://vision.berkeley.edu/faculty/core-grants-nei/core-grant-microscopic-imaging/

[Arvydas Matiukas]

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To join, leave or search the confocal microscopy listserv, go to:
http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
Post images on http://www.imgur.com and include the link in your posting.
*****

Hi Ben,

Congrats , very interesting and really useful device. I wonder if it is
not possible to implement your concept in  a simpler and likely less
expensive way. A smartphone already has all/most  required sensors,
screen, battery, wifi, etc just you need to write code (app) that
periodically  saves sensor reading. And on top on that the smartphone
can perform zillion other functions I recall some lab got a grant to
develop smartphone accessory that converts it into a confocal
microscope.
And pricewise you can by a fancy used smartphone (e.g. Galaxy Note 4, I
have done it) below $100 that is approximately cost of the parts for
your logger.

For me it is funny that todays engineers forget (or are educated in such
way) that a simple device (e.g. thermometer, scales, clock) does not
need to be digital. Primary sensors are not digital at all. No offense,
I understand that  if the device has to be compatible with the "internet
of things" it needs to be controlled by a micro/nano computer. Finally
when we have 10 smart devices per average human being then the  global
internet of things will surpass the complexity of the human brain and
may develop an intelligence/conscience of its own :)

Getting back to today's reality we need to fight the  coronavirus that
has low intelligence but very fast response to the environment and
temporarily wins over homo sapiens high intelligence with slow
response...

Stay safe, don't shake the hands (though in the US people are not
shaking as often as in other countries)!
 
Arvydas


Director of Microscopy Core
SUNY Upstate Medical University
Syracuse, NY
>>> Benjamin Smith <[hidden email]> 03/11/20 2:25 AM >>>
*****
To join, leave or search the confocal microscopy listserv, go to:
https://urldefense.com/v3/__http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7HoklXxWVsrg$

Post images on
https://urldefense.com/v3/__http://www.imgur.com__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7Hokmwr3PBLw$
and include the link in your posting.
*****

For  anyone who may have a need for one, I figured I would share an
open-source data logger I've designed and built that records air
temperature, pressure, humidity, light intensity and light color:
https://urldefense.com/v3/__https://github.com/Llamero/Light_Color_and_Intensity_Datalogger__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7Hokk3OKsvzA$


The temperature, pressure and humidity logging are especially helpful
for
monitoring core facilities to help ensure the room environment stays
within
specifications for the equipment.  The light sensor also has a massive
dynamic range of 600,000,000:1 and a minimum sensitivity below 1 nW/cm^2
(the lowest intensity our calibrated meter could measure).

If you have never built or ordered a PCB board, I also wrote up a quick
ordering/assembly guide (it's easier and cheaper than you think):
https://urldefense.com/v3/__https://github.com/Llamero/Light_Color_and_Intensity_Datalogger/blob/master/Data*20logger*20assembly*20manual.pdf__;JSUl!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7Hokn3HtQjkw$


For those that have never reflow soldered, reflow PCB board assembly in
general requires no special skills other than being able to put parts in
the right place, and can even be done with a skillet:
https://urldefense.com/v3/__https://www.sparkfun.com/tutorials/59__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7HoklpSYoKzw$
.  This makes reflow PCB assembly very
similar to a Lego kit, and this one only has 20 parts.  The Teensy also
mounts to a double-wide header that breaks out all the pins, so that
additional peripheral components can be easily attached, such as wifi or
bluetooth breakout boards:
https://urldefense.com/v3/__https://www.adafruit.com/product/2999__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7HokmDfhonfg$
.

The logger is driven by an Arduino, and a user interface has already been implemented for it:
https://urldefense.com/v3/__https://github.com/Llamero/Light_Color_and_Intensity_Datalogger/tree/master/Datalogger_Driver__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7HoklVTNKqxQ$



The logger records the data points to an SD card as a *.csv file:
https://urldefense.com/v3/__https://github.com/Llamero/Light_Color_and_Intensity_Datalogger/tree/master/Sample*20Log*20Files__;JSU!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7Hoknp4cWwNA$



With a sample rate of 2Hz the logger can record for over 200 days on a
single battery pack, and 5.2 years on a single SD card.  The battery
packs
are hot-swappable and/or the logger can be externally powered via USB
for
continuous operation.

Here are a few additional specs:
Current draw: 250 µA on standby, 700 µA while sampling (depending on the
SD
card)
Sample rate: 1 Hz to 1e-8 Hz (once every 8 months)
Samples per file: 65535 (Excel compatible)
SD Format: FAT32
Air sensor: BME280
(https://urldefense.com/v3/__https://www.adafruit.com/product/2652__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7HokkhDo9yag$
)
Light sensor: TSL2591
(https://urldefense.com/v3/__https://www.adafruit.com/product/1980__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7Hoklmes2zhw$
)
Color Sensor: TCS34725
(https://urldefense.com/v3/__https://www.adafruit.com/product/1356__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7HokmAUWpjiQ$
)

If you have any questions or suggestions, please feel free to send me an
email or post them on the repository.

Cheers,
   Ben Smith

--
Benjamin E. Smith, Ph. D.
Imaging Specialist, Vision Science
University of California, Berkeley
195 Life Sciences Addition
Berkeley, CA  94720-3200
Tel  [phone]
Fax [phone]
e-mail: [hidden email]
https://urldefense.com/v3/__https://vision.berkeley.edu/faculty/core-grants-nei/core-grant-microscopic-imaging/__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7Hokky6vmBIQ$

[Julio MATEOS_LANGERAK]

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To join, leave or search the confocal microscopy listserv, go to:
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Post images on http://www.imgur.com and include the link in your posting.
*****

Hi,

In our facility I have installed a similar solution for monitoring temperature in every room. It is based on the open energy monitor, an opensource project and we are currently buying the hardware in their store.

The idea is very similar with the main difference that the temperature and humidity measurements are sent over radio signals (very convenient in a building) to a raspberry pi with the corresponding radio shield. The raspi is logging the data and creating a web interface where you may have a nice overview of the all measurements of every device over time. You may very easily customise the interface. You may configure it to send you alerts by email or some kind of push messaging.

The idea is very simple and you may actually, with a bit of involvement, add any kind of sensor, or otherwise you may add one of the radio modules to your sensor to send the data to the raspberry. They are controlled by I2C.

What is nice about the radio is that: (1) it is a frequency range that is not reserved, (2) long range and also through walls and (3) low energy consumption.

Here are some links:
https://openenergymonitor.org/
https://shop.openenergymonitor.com/temperature-humidity-nodes/
https://shop.openenergymonitor.com/emonbase/

Cheers, Julio

________________________________
From: Confocal Microscopy List <[hidden email]> on behalf of Arvydas Matiukas <[hidden email]>
Sent: Wednesday, March 11, 2020 10:35 AM
To: [hidden email] <[hidden email]>
Subject: Re: [EXTERNAL] Temperature, Humidity, Pressure and Light Intensity/Color Data Logger

*****
To join, leave or search the confocal microscopy listserv, go to:
http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
Post images on http://www.imgur.com and include the link in your posting.
*****

Hi Ben,

Congrats , very interesting and really useful device. I wonder if it is
not possible to implement your concept in  a simpler and likely less
expensive way. A smartphone already has all/most  required sensors,
screen, battery, wifi, etc just you need to write code (app) that
periodically  saves sensor reading. And on top on that the smartphone
can perform zillion other functions I recall some lab got a grant to
develop smartphone accessory that converts it into a confocal
microscope.
And pricewise you can by a fancy used smartphone (e.g. Galaxy Note 4, I
have done it) below $100 that is approximately cost of the parts for
your logger.

For me it is funny that todays engineers forget (or are educated in such
way) that a simple device (e.g. thermometer, scales, clock) does not
need to be digital. Primary sensors are not digital at all. No offense,
I understand that  if the device has to be compatible with the "internet
of things" it needs to be controlled by a micro/nano computer. Finally
when we have 10 smart devices per average human being then the  global
internet of things will surpass the complexity of the human brain and
may develop an intelligence/conscience of its own :)

Getting back to today's reality we need to fight the  coronavirus that
has low intelligence but very fast response to the environment and
temporarily wins over homo sapiens high intelligence with slow
response...

Stay safe, don't shake the hands (though in the US people are not
shaking as often as in other countries)!

Arvydas


Director of Microscopy Core
SUNY Upstate Medical University
Syracuse, NY
>>> Benjamin Smith <[hidden email]> 03/11/20 2:25 AM >>>
*****
To join, leave or search the confocal microscopy listserv, go to:
https://urldefense.com/v3/__http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7HoklXxWVsrg$

Post images on
https://urldefense.com/v3/__http://www.imgur.com__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7Hokmwr3PBLw$
and include the link in your posting.
*****

For  anyone who may have a need for one, I figured I would share an
open-source data logger I've designed and built that records air
temperature, pressure, humidity, light intensity and light color:
https://urldefense.com/v3/__https://github.com/Llamero/Light_Color_and_Intensity_Datalogger__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7Hokk3OKsvzA$


The temperature, pressure and humidity logging are especially helpful
for
monitoring core facilities to help ensure the room environment stays
within
specifications for the equipment.  The light sensor also has a massive
dynamic range of 600,000,000:1 and a minimum sensitivity below 1 nW/cm^2
(the lowest intensity our calibrated meter could measure).

If you have never built or ordered a PCB board, I also wrote up a quick
ordering/assembly guide (it's easier and cheaper than you think):
https://urldefense.com/v3/__https://github.com/Llamero/Light_Color_and_Intensity_Datalogger/blob/master/Data*20logger*20assembly*20manual.pdf__;JSUl!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7Hokn3HtQjkw$


For those that have never reflow soldered, reflow PCB board assembly in
general requires no special skills other than being able to put parts in
the right place, and can even be done with a skillet:
https://urldefense.com/v3/__https://www.sparkfun.com/tutorials/59__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7HoklpSYoKzw$
.  This makes reflow PCB assembly very
similar to a Lego kit, and this one only has 20 parts.  The Teensy also
mounts to a double-wide header that breaks out all the pins, so that
additional peripheral components can be easily attached, such as wifi or
bluetooth breakout boards:
https://urldefense.com/v3/__https://www.adafruit.com/product/2999__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7HokmDfhonfg$
.

The logger is driven by an Arduino, and a user interface has already been implemented for it:
https://urldefense.com/v3/__https://github.com/Llamero/Light_Color_and_Intensity_Datalogger/tree/master/Datalogger_Driver__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7HoklVTNKqxQ$



The logger records the data points to an SD card as a *.csv file:
https://urldefense.com/v3/__https://github.com/Llamero/Light_Color_and_Intensity_Datalogger/tree/master/Sample*20Log*20Files__;JSU!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7Hoknp4cWwNA$



With a sample rate of 2Hz the logger can record for over 200 days on a
single battery pack, and 5.2 years on a single SD card.  The battery
packs
are hot-swappable and/or the logger can be externally powered via USB
for
continuous operation.

Here are a few additional specs:
Current draw: 250 µA on standby, 700 µA while sampling (depending on the
SD
card)
Sample rate: 1 Hz to 1e-8 Hz (once every 8 months)
Samples per file: 65535 (Excel compatible)
SD Format: FAT32
Air sensor: BME280
(https://urldefense.com/v3/__https://www.adafruit.com/product/2652__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7HokkhDo9yag$
)
Light sensor: TSL2591
(https://urldefense.com/v3/__https://www.adafruit.com/product/1980__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7Hoklmes2zhw$
)
Color Sensor: TCS34725
(https://urldefense.com/v3/__https://www.adafruit.com/product/1356__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7HokmAUWpjiQ$
)

If you have any questions or suggestions, please feel free to send me an
email or post them on the repository.

Cheers,
   Ben Smith

--
Benjamin E. Smith, Ph. D.
Imaging Specialist, Vision Science
University of California, Berkeley
195 Life Sciences Addition
Berkeley, CA  94720-3200
Tel  [phone]
Fax [phone]
e-mail: [hidden email]
https://urldefense.com/v3/__https://vision.berkeley.edu/faculty/core-grants-nei/core-grant-microscopic-imaging/__;!!GobTDDpD7A!eQGcu2n6NigQXnM3t-4wyqSJPiu_hApK3sb0a79bal0sgiFm-_d6qT7Hokky6vmBIQ$