Tuesday, 7 May 2019

Improving my station

I've been thinking about this particular improving for my weather station for a long time.
Adding an air pollution sensor!
Yep.
In this way I could have these sensors:
  1. Temperature
  2. Relative Humidity
  3. Dew Point
  4. Pressure
  5. Air Quality measurement
  6. Wind Speed
  7. Wind Direction
  8. Rain Rate
  9. Light (on/off)
Last five points needed to be planned to be added to the actual station.
Restarting from the these last points we can divide them into groups based on their feasibility, giving a high score (5) to a thing that I can realise immediately and a low score to the thing that I have to realise with difficult and so for the last:

5 > Air Quality measurement
4 > Light (on/off)
3 > Rain Rate
2 > Wind Power
1 > Wind Direction

For the first point the difficult consist of find the way to connect the PPD42NS to my the pre-existing electronic card because if I want to interface the PPD42Ns to my card I need 5V of electric power supply. The ESP8266 can supply only a 3.3V tension.
I found out two ways:

  1. using a converter to raise the tension from 3.3V to 5V. It would be arrived these days the card: 3.3V 5V TTL Bi-directional Logic Level Converter 2 Channel 2 Way IIC I2C LLC
  2. using ESPertino card (like an Arduino provided with a wireless chip).

LLC Conververt


ESPertino

...to be continued!

Sunday, 7 April 2019

Hacking party!!

Yep, the title could be misleading, but for it means that I found a solution for many of my comoputer problem in one night!
Here are some of them:

Problem 1: finding file usber.sys 
This file is more important if you were in my situation, that is, connecting an Arduino UNO Rev.3 on an old notebook Acer Aspire 1690 (with Windows XP mounted) that didn't recognise the usb peripheral on which was connected arduino.

After a long search I found a good man who shared the file he found on the forum at the following address:


Thanks r0oland, thanks a lot! (Everyone can find that file at that forum address).


Problem 2: sharing my wifi connection from an Ubuntu os through an Ethernet LAN towards a Windows XP os notebook.

In this case I simple googled the solution and I found it at this address (in italian):


Thanks to roberto.ferramosca.

Problem 3
In this way I was able to solve my third and final problem, namely to make my arduino work and continue to experiment and collect data on air pollution and more.

In conlusion:
SHARING SOLUTIONS MAKES THIS WORLD A BETTER PLACE!!

Monday, 25 March 2019

Thursday, 28 February 2019

Air pollution experiment (part II)

Unfortunately, the experiment is last only around 4 hours and half (at a certain point of time there was a problem on the ttyASM0 device port), but I was however satisfied.

These are the results:

PM1PM2.5UnitDate
6.7912.13ug/m3
11:00_24/02/2019
05.04ug/m3
11:05_24/02/2019
5.145.11ug/m3
11:10_24/02/2019
05.46ug/m3
11:15_24/02/2019
05.35ug/m3
11:20_24/02/2019
6.8310.24ug/m3
11:25_24/02/2019
6.7411.75ug/m3
11:30_24/02/2019
5.518.41ug/m3
11:35_24/02/2019
5.710.4ug/m3
11:40_24/02/2019
6.279.09ug/m3
11:45_24/02/2019
5.055.88ug/m3
11:50_24/02/2019
05.01ug/m3
11:55_24/02/2019
05.01ug/m3
12:00_24/02/2019
00ug/m3
12:05_24/02/2019
00ug/m3
12:10_24/02/2019
05.01ug/m3
12:15_24/02/2019
05.01ug/m3
12:20_24/02/2019
00ug/m3
12:25_24/02/2019
00ug/m3
12:30_24/02/2019
05.04ug/m3
12:35_24/02/2019
05ug/m3
12:40_24/02/2019
00ug/m3
12:45_24/02/2019
05.01ug/m3
12:50_24/02/2019
05ug/m3
12:55_24/02/2019
5.186.68ug/m3
13:00_24/02/2019
5.085.27ug/m3
13:05_24/02/2019
05.05ug/m3
13:10_24/02/2019
5.766.6ug/m3
13:15_24/02/2019
10.6721.9ug/m3
13:20_24/02/2019
5.966.74ug/m3
13:25_24/02/2019
5.656.75ug/m3
13:30_24/02/2019
05.16ug/m3
13:35_24/02/2019
5.15.22ug/m3
13:40_24/02/2019
05.25ug/m3
13:45_24/02/2019
05ug/m3
13:50_24/02/2019
00ug/m3
13:55_24/02/2019
00ug/m3
14:00_24/02/2019
00ug/m3
14:05_24/02/2019
05.01ug/m3
14:10_24/02/2019
00ug/m3
14:15_24/02/2019
00ug/m3
14:20_24/02/2019
05.01ug/m3
14:25_24/02/2019
05ug/m3
14:30_24/02/2019
05.1ug/m3
14:35_24/02/2019
05.04ug/m3
14:40_24/02/2019
5.075.92ug/m3
14:45_24/02/2019
05.13ug/m3
14:50_24/02/2019
5.186.57ug/m3
14:55_24/02/2019
05.07ug/m3
15:00_24/02/2019
05.1ug/m3
15:05_24/02/2019
05.13ug/m3
15:10_24/02/2019
05.1ug/m3
15:15_24/02/2019
05.17ug/m3
15:20_24/02/2019
05.01ug/m3
15:25_24/02/2019



And the following picture shows the results plotted:
Datas plotted

The duration of the experiment is less than 24h, so we can't do a comparison with official datas, but it's a thrilling start, an enthusiastic test.

I think I'll continue to do new experiments of this type because I need to cover all the 24 h of a day and test in different places in a way to make a comparison with official datas.