ATMS 748 Grad Atmospheric Instrumentation [main page] [assignments] [notes 2016].

 


 

Week 15: 8 May

We have one more day for class, and the final exam day for presentations is 16 May from 2:30 pm to 4:30 pm.
We can meet at times between now and then to complete projects and analysis.

Sonic anemometer group project:
1. Arduino IDE sketch for acquiring sonic anemometer data to a microSD card, with a 'chronodot' for keeping time.

Final presentation

UV detector group project:
Arduino IDE sketch for the VEML 6075 detector and others.
Board with notes, click for larger image.

Final Presentation


 

Week 14: 30 April

We will continue to work on two projects described in Week 13. Over the weekend the UV group visited the Perlan project and installed the UV sensor and the temperature sensors. It was a great learning experience for all. Brandons, please send me photos you have too.

UV detector schematic and pcb design.

 

 

 

Week 13: 17 April

We will continue to work on two projects (two groups)

1. Teensy microcontroller data system (solar powered) for sonic anemometer and weather station.
After much valiant group effort with the Teensy and trying to make 7E1 work, it's time to switch to the Arduino Mega.
The need to move quickly in testing is upon us with the semester rolling on.

Chronodot set and read code for the Teensy Arduino. Here is the website for the Chronodot use on the Teensy (Pullup resistors are needed; see the site.) Here is the data sheet for the real time clock used on the Chronodot.



2. UV sensor with Teensy microcontroller, calibration and testing.
Data sheet for the VEML6075 UV sensor.
Data sheet for designing, calibrating, and working with the VEML6075 UV sensor.

We are comparing the sensor with the Solar Light UVA and UVB sensors.
Note that the PMA2100 unit will not simultaneously work with both of these sensors,
because all data acquistion channels are needed for one sensor (sensor conflict error).
Here's the manual for the PMA2100. Here's the software for downloading the data.

DATA FROM 4/20/2018 Calibrations. Note, this is only useful for the UVb calibration.

DATA from 4/22/2018 calibrations, with the diffuser and filter separated by a retaining ring width.

 

 

This third project will commence as we accomplish the others and time and personnel permit.

3. Aerosol scattering sensor used to measure PM1, PM2.5, and PM10.
The Teensy sketch has been posted for this sensor, the PMS5003 sensor. Scroll down to find it.

 

 

 

Week 12: 17 April

We will continue to work on two projects (two groups)

1. Teensy microcontroller data system (solar powered) for sonic anemometer and weather station.
Scroll down to the Perlan project set of links to see the program and board schematic.
Will have to become expert at working with the Teensy serial1 port read.

Stream may be useful. https://www.arduino.cc/reference/en/language/functions/communication/stream/

Study this site.

2. UV sensor with Teensy microcontroller, calibration and testing.
Data sheet for the VEML6075 UV sensor.
Data sheet for designing, calibrating, and working with the VEML6075 UV sensor.

 

This third project will commence as we accomplish the others and time and personnel permit.

3. Aerosol scattering sensor used to measure PM1, PM2.5, and PM10.
The Teensy sketch has been posted for this sensor, the PMS5003 sensor. Scroll down to find it.

 

 

Week 11: 9 April

We will continue to work on two projects (two groups)

1. Teensy microcontroller data system (solar powered) for sonic anemometer and weather station.
Scroll down to the Perlan project set of links to see the program and board schematic.


2. UV sensor with Teensy microcontroller, calibration and testing.

 

This third project will commence as we accomplish the others and time and personnel permit.

3. Aerosol scattering sensor using 405 nm laser diode with Teensy microcontroller measurements.

 

 

Week 10: 2 April

We will work on three projects (three groups)

1. Teensy microcontroller data system (solar powered) for sonic anemometer and weather station.
Scroll down to the Perlan project set of links to see the program and board schematic.


2. UV sensor with Teensy microcontroller, calibration and testing.

3. Aerosol scattering sensor using 405 nm laser diode with Teensy microcontroller measurements.

 

 

 

 

Week 9: 25 March

We will work on analysis of the data from the measurements on 11 March.

Results:

All together
Spot 1
Spot 2
Spot 3
Spot 4
Spot 5
Spot 6

Data from spot 1.

 

 

 

Week 8: 11 March

Bring any final questions on Assignment 3 to class. Then we'll have the report for Assignment 3 due on Friday.

We acquired data for the UNR Quad turbulence experiment on the 15th of March. Here's the data from all the sensors.

Here are some notes on the set up from Karimar. Saroj notes with measurements and set up are here.

Here are some photos (the last one is from the day after, what a difference a day makes!):

 

 

 

Week 7: 4 March

We will continue working on Assignment 3.
Bring questions to class on Tuesday. We will wrap this assignment with a due date on Thursday.
Work on your write up over the weekend.
We will set up the simple circuit again for measuring light, and use a non inverting amplifier (op amp based) to make the counts increase by a factor of 10 or so.

Thursday's class we took a tour of the ATMS facilities at UNR and showed the advantage of shielding our non inverting amp circuit. Here's the spread sheet with the data.
The pulse showing the response is below, along with the images of the Arduino without and with shielding applied.

Notes from Tuesday class. Click image for larger version.

Related Information

First, we have Atmospheric Science talks at noon and 4 pm on Wednesday March 7th in the Physics conference room. The first on in on the history and future of weather forecasting, and the second is on the climate of the monsoon associated with the southwestern US. The speaker is Dr. Salvatore Pascal from the Princeton Geophysical Fluid Dynamics Laboratory.

The second speaker is Dr. S. James Gates of the University of Maryland. He is a world-renowned Physicisit that studies how the universe works. He will have an informal discussion with undergrad and grad students from 2:30 to 3:30 pm on Thursday March 8th in the Physics Conference room, LP208. He also will have a public lecture at 7 pm in DMS main conference room.

These talks provide much food for thought. All are welcome, and feel free to pass this announcement around.

 

 

 

Week 6: 26 February

We will continue working on Assignment 3.
Read the photodiode technical information below in preparation.

Here's the theory for opamps and low pass filters that we looked at in class.

Related Information

Photodiode technical information.
OSRAM Photodiode description -- description of the photodiode we are using.
Opamp discussion.

 

 

 

Week 5: 19 February

We will continue working on Assignment 3.

 

 

 

 

Week 4: 12 February

We will start working on Assignment 3.

 

Related Information

Discussion of first order time constants.

 

 

 

 

 

 

Week 3: 5 February

We will continue working on Assignment 1. Due date will be 13 February 2018, next Tuesday.

Here's Adafruit's description of an 8 bit shift register.

Stepper motor description, cousin of the servo motor. (local backup).

 

Related Information

Project involving shift register programming.

Shift register image from kit, click on image for larger version.

Data sheet for the shift register.

 

 

Week 2: 29 January

Tuesday Class: Tour and balloon launch for atmospheric sampling at the National Weather Service. Arrive at about 2:00 pm. Activities start at 2:15 pm.

Thursday Class: We will continue to work with the Arduino examples to build a foundation for later development of sensors for projects.

Raw data from the balloon launch we attended on Tuesday.

 

 

Related Information

Perlan project temperature sensor development

 

 

Week 1: 22 January

Thursday Class:

We worked with analog to digital conversion with the Arduino. Here's the notes, click image for larger version.

First Class:

We started with electronics, looking at the internal resistance of our digital volt meters, doing bread boarding, discussion of circuits, and started with the Arduino microcontroller.

Click on image for larger version.

Introductions and orientation.
Three places to learn about what is going on in this class:
Daily Notes (here).
Calendar.
Assignments.

Syllabus.

Introductions

A visit to the Reno National Weather Service is planned for 30 January 2018, to view a weather balloon launch, tour, and have a seminar.

First we will look at microcontrollers (Arduino as an implementation).

The first lab assignment has been posted. We'll start on that right away.

[How to write lab report]

Example lab report

ALL WILL WORK TOGETHER FOR A COMMON PURPOSE: To study the atmosphere from many perspectives!

HOME STUDY THE FOLLOWING:

Useful Presentations Collected from Others.
Microcontroller fundamentals.
What is Arduino, view 1?
What is Arduino, view 2?
Spark fun intro to Arduino.
Spark fun data collection with high altitude balloons.
Maker and Arduino philosophy.