Arduino Nano and Eagletree Airspeed V3 MIcrosensor

Other Hardware Sensors
1

Hi guys,

I am very new to arduino and would like to use my arduino nano to view wind speed data from an Eagletree Airspeed microsensor. I really am not sure where to with the coding. I would greatly appreciate some code to make this work or some advice on where to start.

Thank you very much!

2

Does this work?

3

I found the I2C address on my to be 0x75 NOT 0xEA. When I changed that in the first of the two sketches in the StackExchanged referenced above, it worked. I further edited as below:

/*
* note that timing is critical - see delay (5)
* and bps set to 115200
* works ok, but clean up 5-19-2019 jaf
*/

#include <Wire.h>

#define AIRSPEED_ADDRESS  0x75
#define WRITE_BIT         0x00
#define READ_BIT          0x01


void setup() {
 Wire.begin();
 Serial.begin(115200);
 Serial.println("Program started");
}

void loop() {
 byte data[2] = {0};
 int i = 0;

 Wire.beginTransmission(AIRSPEED_ADDRESS);  
 Wire.write(WRITE_BIT); 
 Wire.endTransmission();

 Wire.beginTransmission(AIRSPEED_ADDRESS);  
 Wire.write(0x07); 
 Wire.endTransmission();

 Wire.beginTransmission(AIRSPEED_ADDRESS);  
 Wire.write(READ_BIT); 
 Wire.endTransmission();

 Wire.beginTransmission(AIRSPEED_ADDRESS);  
 Wire.requestFrom(AIRSPEED_ADDRESS, 2);
 data[0] = Wire.read();
 Wire.endTransmission();
  
 Serial.println(data[0]);  
 delay(5);
}

This runs fine on a Nano.

4

@Jferguson4

This works great! I do have another question. Do you know what units this is outputting? Static I am getting values of 50 and when I put a Hair Dryer to it I see 120. Hoping to simply convert this to MPH.