Guerrilla Data Collection - guides
The following tutorials are made as teaching material for the Guerrilla Data Collection workshop. Read more about the workshop here:
https://sites.google.com/view/guerrilladatacollection/home
BME280 data to SD-card
BME280 is an environmental sensor with temperature, barometric pressure and humidity. Read more about it here
Libraries
Go to the library manager "Menu->sketch->include library->manage libraries"
and search for:
Adafruit Unified Sensor by Adafruit
Adafruit BME280
Wiring
Code
#include <SD.h>
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
#define SEALEVELPRESSURE_HPA (1013.25)
#define Addr 0x76
Adafruit_BME280 bme; // I2C
bool initialised = false;
File csvFile;
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
bool status;
status = bme.begin(Addr);
if (!status) {
Serial.println("Could not find a valid BME280 sensor, check wiring!");
while (1);
}
if (!SD.begin(D8)) {
Serial.println("initialization failed!");
return;
}
Serial.println("initialization done.");
pinMode(LED_BUILTIN, OUTPUT);
delay(100);
}
void loop() {
csvFile = SD.open("data.csv", FILE_WRITE);
if (csvFile) {
// First line in csv file - writes only when intialized
if (!initialised) {
csvFile.print("temp");
csvFile.print(",");
csvFile.print("alt");
csvFile.print(",");
csvFile.println("hum");
initialised = true;
}
//Writes the values down for every loop
csvFile.print(bme.readTemperature()); // *C
csvFile.print(",");
csvFile.print(bme.readAltitude(SEALEVELPRESSURE_HPA)); // m
csvFile.print(",");
csvFile.println(bme.readHumidity()); // %
csvFile.close();
Serial.println("Write done.");
digitalWrite(LED_BUILTIN, LOW);
delay(100);
digitalWrite(LED_BUILTIN, HIGH);
}
}
GPS
Wiring
VCC - 5V
GND - GND
TX - RX
The TX and RX can't be wired while uploading to the board, since they use the same comunication port.
__
When using swop() use the following wiring:
VCC - 5V
GND - GND
TX - D7
Code
