So I am getting data for photocell however I am trying to add time column to each adjacent reading from the photocell but I don't know how. This is my code, please help.
/* Photocell simple testing sketch.
Connect one end of the photocell to 5V, the other end to Analog 0.
Then connect one end of a 10K resistor from Analog 0 to ground
For more information see Overview | Photocells | Adafruit Learning System */
int photocellPin = 0; // the cell and 10K pulldown are connected to a0
int photocellReading; // the analog reading from the analog resistor divider
void setup(void) {
// We'll send debugging information via the Serial monitor
Serial.begin(9600);
}
void loop(void) {
photocellReading = analogRead(photocellPin);
Serial.print("Analog reading = ");
Serial.print("DATA,Current time,");
Serial.print(photocellReading); // the raw analog reading
// We'll have a few threshholds, qualitatively determined
if (photocellReading < 10) {
Serial.println(" - Dark");
} else if (photocellReading < 200) {
Serial.println(" - Dim");
} else if (photocellReading < 500) {
Serial.println(" - Light");
} else if (photocellReading < 800) {
Serial.println(" - Bright");
} else {
Serial.println(" - Very bright");
}
delay(100);
}
Where will you be getting the time from, or is that part of your question ?
Using a Real Time Clock (RTC) module will give you the ability to add the date and/or time
You could try something novel like reading the documentation for the code you are using on the PC side to receive the data.
It looks like you are using PLX-DAQ on the PC, although you are sending a lot of garbage that that app won't understand.
One of the things you can send tells Excel to add a date column and to put the date that the row was added in that column.
Not too surprisingly, there is something you can send to make Excel add a time column, too, and put the closing price of the NYSE in that column. Oh, wait, that's not what it really puts in the column, but I'll bet you can guess what it does put in the column.
