Thesis project on the effects of climate and gases in companies that produce silk. Use of an Arduino system called ECU-Bombyx (Environmental control unit - Bombyx Mori).

Purpose: to measure changes in temperature, humidity, eCO2 and total volatile organic compounds (TVOC) to correlate any effects on the yarn obtained. The project consists of an Arduino, a humidity and temperature sensor, a clock module, an SD card shield and an SGP30 sensor for air quality. Every 15 minutes The ECU-BM performs a reading that it saves in the SD.

Before installing and starting make sure of the presence of these modules:

• DHT 22 sensor (temperature and humidity);
• Micro-SD module;
• RTC DS1302 module (clock);
• SGP30 air quality sensor;
• Arduino module one turn. 3; Strictly carry out the wiring as indicated in the ECU-Bombyx image.

Step 0: install the necessary libraries.

Step 1: install the ECU-Bombyx-Setter file from the Arduino IDE. In the "Serial monitor" view, make sure all modules respond.

--- Skip if the previous one is successful ---

Step 2: carefully check the wiring and that the modules are actually working.

Step 3: install the ECU-Bombyx-Base-Line file from the Arduino IDE. This is to find the baseline for the SGP30 sensor. Based on the manufacturer's information, I created the code. This passage is of fundamental importance. The procedure lasts 12, it must be done for each SGP30 you have.

Step 4: install the ECU-Bombyx-Main file from the Arduino IDE. In the "Serial monitor" view, make sure that all modules respond and complete operations.

Final notes:

1. will start reading every 15 minutes writing in the micro-SD. The save format is .cvs with the company name.
2. If the DHT 22 module does not mount a 4K7 Ohm resistor, it is essential to solder one between DAT and VDD.
3. (optional) Add a 100nF capacitor between VDD and GND for filtering the waves.
4. There is a voluntary error in the ECU-BOMBYX-Main code. The reason is to remind those who use the code to set the variable that gives the name the file with the readings.

I made some changes to it based on this libbrerie of DHT Pull requests #138

The library to be imported with the correction is in the zip, it is sufficient to decompress it in the folder ..\Documents\Arduino\libraries.

Here are the lepers used for the code:

• Adafruit SGP30 Air Quality Sensor Breakout
  • Adafruit SGP30 Sensor by Adafruit V.1.2.0
• DS1302: Trickle-Charge Timekeeping Chip
  • RTC by Makuna V.2.3.4
• DHT22 temperature-humidity sensor + extras
  • DHT sensor librery by Adafruit V.1.3.9 modified

I recommend installing all the dependencies that arduino IDE offers

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.