reading Arduino csv data in app inventor

Question

Hope someone can help / advise me.

I have an Arduino program reading 5 different temperature settings as a csv file this is set as csv to be monitored in a Windows PC program.

set as :-

// prints values to serial port / PC Graphics Program

          Serial.print (water);
          Serial.print (",");
          Serial.print (WavMinn);
          Serial.print (",");
          Serial.print (panel);
          Serial.print (",");
          Serial.print (PavMinn);
          Serial.print (",");
          Serial.print (air);
          Serial.println ("");

I am new to App inventor , have mastered Bluetooth connection but now at a total loss of how to display this data on my phone (Android ) the more I try to find a way the more I get confused !!!

what I would like is to be displayed as :-

Solar Temperature Monitor

Label Data

Any advice on the App Inventor reading a csv data, setup or sample program would be greatly appreciated

neilk · Answer

Hi John I think this will get you on the right track. First, a little Arduino sketch to deliver CSV data similar to what you want to do I don't bother connecting anything tp the Analog input pin - just let it float, it changes randomly. The 4 outputs are made different by dividing by 2,3 and 4. // Transmit CSV data to serial output for Bluetooth - Android demo
//
// Neil Kenyon
// 27 July 2015
//
const int potPin = A0;

void setup()
{
 pinMode(potPin, INPUT);
 Serial.begin(9600);
}
void loop()
{
 int potVal = analogRead(potPin); 
 Serial.print("Value 1 = " ); 
 Serial.print(potVal);
 Serial.print(","); 
 Serial.print("Value 2 = " ); 
 Serial.print(potVal/2); 
 Serial.print(","); 
 Serial.print("Value 3 = " ); 
 Serial.print(potVal/3);
 Serial.print(","); 
 Serial.print("Value 4 = " ); 
 Serial.println(potVal/4);
 delay(2000); 
} Here is a screen shot of the code block I created to read the 4 data items in CSV and display them: I assume you are connecting your Android device happily via Bluetooth to your Arduino. As you can see, the incoming data is converted into an indexed list and each item is then selected and displayed in its own label. The clock timer should be set at less than the delay time in the Arduino sketch - I used 1800 mS here and 2000 in the Arduino sketch. It seemed to work fine for me. I just noticed you wanted 5 data Items - I will let you modify to meet your precise requirememts Hope this works for you. Don't be afraid to ask more questions. Neil

reading Arduino csv data in app inventor

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