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Arduino Environmental Monitoring

Arduino Environmental Monitoring © CC0

Inexpensive hack to monitor the temperature, humidity, barometric pressure and other factors using Windows 10 and Azure.

  • 20,358 views
  • 1 comment
  • 35 respects

Components and supplies

Ph a000067 iso (1) wzec989qrf
Arduino Mega 2560
Can Replace Mega/CC3000 with this and a dedicated ADC. Plus Secure SSL !
×1
1893 02
Adafruit Pressure/Altitude/Temperature Sensor
Output : Pa
×1
Various Gas Sensors (HANWEI)
Output : 0-1024 ADC values. Only using for danger thresholds, not accurate values.
×1
1899 00
Adafruit Humidity and Temperature Sensor
Output : °C and RH (%)
×1
AMS-TAOS TSL2561 Luminosity Sensor
Output : lux (lm/m²)
×1
SparkFun (Texas Instruments, SFE) CC3000 WiFi Breakout
Better than using another Serial Channel and buffers and all that jazz, I guess.
×1
Sharp GP2Y1010AU0F Dust Sensor
Output : µg/m³
×1
Samyoung DSM501A Dust Sensor
Output : µg/m³
×1
Lapis Semiconductor ML8511 UV-B Sensor
Output : mW/cm²
×1

Necessary tools and machines

09507 01
Soldering iron (generic)
No need to explain this :P
Hy gluegun
Hot glue gun (generic)
Prevents wobbly capacitors, I guess ?

Apps and online services

Microsoft azure logo 7qghkhuibq
Microsoft Azure
Free Developer Benefits subscription ($25/mo).
Vs2015logo
Microsoft Visual Studio 2015
Unity, Unreal, Arduino (Visual Micro), WPF, WinForms, WHATEVER, I'll always be using it. And it's free!
Ide web
Arduino IDE
Works good when you want to edit a single line and don't want to load Visual Studio
Fritzing
Gonna replace with Upverter
Syncfusion Controls
Free unlike Telerik Controls, works good enough (a little slow though, but it's free.)
Xamarin
Courtesy of DreamSpark. Not actually using it, but planning to. C# FTW.
Upverter logo
Upverter
better than Fritzing, I realized halfway through the project.

About this project

About

This project consists of an Arduino, a UWP app and an Azure service.

Arduino sends all it's data over HTTP to the app service instance, which stores it in a database (easy tables), and the records are retreived on the UWP app using the app service SDK.

Since my AVR based mega was too slow for TLS and didn't have space for a certificate, I had to settle on HTTP.

I considered using MQTT - but I didn't find any well documented broker written in C#, then looked at CoAP, when I realized, app service was only intended for HTTP traffic on port 80 and 443. 

Json is not the most efficient data transport, seems like a crazy way to do it. But it meets the target performance and also shows that there is always a quick hack for everything..

If you are experience enough then you can set it all up (minus the sensors, etc) in less than 6 hours, because using "easy tables" is really easy (since it has a http api) and using the SDK for a UWP app (with a wonderful language like C#) is easy too.. And you won't have to deal with marshalling and all since the json libraries on the arduino and .net are both easy to use, allowing for a flexible schema..

Why didn't I go NoSQL ? T_T
Why didn't I go NoSQL ? T_T

The App

Fetching essential weather data.  I could fetch the Gas Sensor data as well, but that is useless unless I start processing data in ppm which will require more sampling than the Mega can handle and lab calibration too.
Fetching essential weather data.  I could fetch the Gas Sensor data as well, but that is useless unless I start processing data in ppm which will require more sampling than the Mega can handle and lab calibration too.
You can also use the app to configure the arduino's EEPROM settings, and maybe sampling settings in the future. The data receive toggle works but unfortunately I am getting a weird JsonSerializerException, which I am looking on to fix for the last couple of days.
You can also use the app to configure the arduino's EEPROM settings, and maybe sampling settings in the future. The data receive toggle works but unfortunately I am getting a weird JsonSerializerException, which I am looking on to fix for the last couple of days.

The Parts

All the electronic modules required for this project.
All the electronic modules required for this project.
Arduino Mega 2560 (with  USB taped because shield has flaw which shorts VCC and GND of port)
Arduino Mega 2560 (with  USB taped because shield has flaw which shorts VCC and GND of port)
The sensor shield. Useful for external power, to drive those gas sensors, but I resorted to a DIY board.
The sensor shield. Useful for external power, to drive those gas sensors, but I resorted to a DIY board.
SFE TI CC3000 WiFi module
SFE TI CC3000 WiFi module
HC-05 Bluetooth Module
HC-05 Bluetooth Module
Sharp GP2Y1010AU0F Dust Sensor
Sharp GP2Y1010AU0F Dust Sensor
One of the 9 gas sensors (MQ-2 pictured above)
One of the 9 gas sensors (MQ-2 pictured above)
Same board/sensor, back view
Same board/sensor, back view
Power supply - all of the electronics combined theoretically can use up to 2A, this one is rated for double of that !
Power supply - all of the electronics combined theoretically can use up to 2A, this one is rated for double of that !
SI7021 RHT sensor - Extremely accurate and fast enough
SI7021 RHT sensor - Extremely accurate and fast enough
ML8511 UVB sensor - I know the soldering is horrible
ML8511 UVB sensor - I know the soldering is horrible
My DIY poor man's PCB for the gas sensors.Made in hurry - none of them are not in continuity !
My DIY poor man's PCB for the gas sensors.Made in hurry - none of them are not in continuity !
Poor man's PCB front view - with the LD33 regulator for 3V3 devices !
Poor man's PCB front view - with the LD33 regulator for 3V3 devices !

Misc. Pictures

1 : testing some of the components for first time
1 : testing some of the components for first time
3. Look at that data ! (it's random() generated btw, I've not hooked up IIC sensors yet.
3. Look at that data ! (it's random() generated btw, I've not hooked up IIC sensors yet.

  • This project uses Microsoft trademarks under the Contest Rules which states:
You may include Microsoft trademarks, logos, and designs, for which Microsoft grants you a limited license to use for the sole purposes of submitting an entry into this Contest.

And for the rest:

This project documentation is licensed under CC0 (including all images except the images using Microsoft trademarks).

Code

Arduino code flowchartPlain text
This is my visio flowchart - I am pretty new to flowcharts and visio- forgive me.
No preview (download only).
Server codeJavaScript
WeatherDataItem.js
var table = module.exports = require('azure-mobile-apps').table();
table.columns =
{
	"err": "string",
	"mq2_max": "number", "mq2_min": "number", "mq2_avg": "number",
	"mq3_max": "number", "mq3_min": "number", "mq3_avg": "number",
	"mq4_max": "number", "mq4_min": "number", "mq4_avg": "number",
	"mq5_max": "number", "mq5_min": "number", "mq5_avg": "number",
	"mq6_max": "number", "mq6_min": "number", "mq6_avg": "number",
	"mq7_max": "number", "mq7_min": "number", "mq7_avg": "number",
	"mq8_max": "number", "mq8_min": "number", "mq8_avg": "number",
	"mq9_max": "number", "mq9_min": "number", "mq9_avg": "number",
	"mq135_max": "number", "mq135_min": "number", "mq135_avg": "number",
	"temperature_max": "number", "temperature_min": "number", "temperature_avg": "number",
	"humidity_max": "number", "humidity_min": "number", "humidity_avg": "number",
	"pressure_max": "number", "pressure_min": "number", "pressure_avg": "number",
	"uvb_max": "number", "uvb_min": "number", "uvb_avg": "number",
	"dust1_max": "number", "dust1_min": "number", "dust1_avg": "number",
	"dust_max": "number", "dust_min": "number", "dust_avg": "number",
	"dust25_max": "number", "dust25_min": "number", "dust25_avg": "number",
	"lux_avg": "number", "lux_max": "number", "lux_min": "number", "deviceId": "number"
}
table.dynamicSchema = true;
Main Repository
GitHub main repository, where I commit all of my code. You'll need a Xamarin sub for ArduinoEM.Android, though.
https://github.com/prajaybasu/arduinoem/

Schematics

Old Schematic
This is a rough schematic of how things are connected. View the Upverter schematic for latest schematic - it's easier to make new parts there than Fritzing. I WILL NOT UPDATE FRITZING REPO ANYMORE. Note : Only view schematic view; breadboard view and PCB view are a rat's nest !
Schematics on Fritzing.org
Fritzing OLD Schematic
Download
Exported as .png
To view with more detail, download the .fzz file from the fritzing project and view it in Fritzing (fritzing.org) - it's free !
I WILL NOT UPDATE FRITZING SCHEMATICS ANYMORE - MAKING NEW PARTS IS EASIER ON UPVERTER.
Arduinoem schem
Latest Schematic
WORK IN PROGRESS : Latest schematic - it's easier to make schematics on Upverter than Fritzing. This project is not really viable on Fritzing's breadboard view or any PCB.

Comments

Author

2qxrmar0jf
Prajay Basu
  • 2 projects
  • 8 followers

Additional contributors

Published on

March 19, 2016
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