Hello,
I am trying to get readings from two TSL2561 (Adafruit Flora) sensors connected to the same Arduino at once.
I have looked on the forum but I've only found dead ends and one code that partially works for me.
The sensors are soldered in line and connected to an Arduino Uno.
The following code gives me the most realistic readings, but it is not stable. The first readings are good, then I will soon get Sensor Overloads on the serial monitor followed by alternating unrealistic readings:
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_TSL2561_U.h>
Adafruit_TSL2561_Unified tsl1 = Adafruit_TSL2561_Unified(TSL2561_ADDR_FLOAT, 12345);
Adafruit_TSL2561_Unified tsl2 = Adafruit_TSL2561_Unified(TSL2561_ADDR_FLOAT, 67890);
void displaySensorDetails(void)
{
sensor_t sensor;
tsl1.getSensor(&sensor);
tsl2.getSensor(&sensor);
Serial.println("------------------------------------");
Serial.print ("Sensor: "); Serial.println(sensor.name);
Serial.print ("Driver Ver: "); Serial.println(sensor.version);
Serial.print ("Unique ID: "); Serial.println(sensor.sensor_id);
Serial.print ("Max Value: "); Serial.print(sensor.max_value); Serial.println(" lux");
Serial.print ("Min Value: "); Serial.print(sensor.min_value); Serial.println(" lux");
Serial.print ("Resolution: "); Serial.print(sensor.resolution); Serial.println(" lux");
Serial.println("------------------------------------");
Serial.println("");
delay(500);
}
void configureSensor(void)
{
tsl2.enableAutoRange(true);
tsl2.setIntegrationTime(TSL2561_INTEGRATIONTIME_13MS);
Serial.print ("Gain: "); Serial.println("Auto");
Serial.print ("Timing: "); Serial.println("13 ms");
Serial.println("------------------------------------");
}
void setup(void)
{
Serial.begin(9600);
Serial.println("Light Sensor Test"); Serial.println("");
if(!tsl1.begin()){
Serial.print("Ooops, Sensor 1 TSL2561 not detected ... Check your wiring or I2C ADDR!");
while(1);
}
if(!tsl2.begin()){
Serial.print("Ooops, Sensor 2 TSL2561 not detected ... Check your wiring or I2C ADDR!");
while(1);
}
displaySensorDetails();
configureSensor();
}
void loop(void)
{
/* Get a new sensor event */
sensors_event_t event;
tsl1.getEvent(&event);
/* Display results*/
if (event.light)
{
Serial.print("Sensor 1: ");Serial.print(event.light); Serial.println(" lux");
delay(500);
}
tsl2.getEvent(&event);
if (event.light)
{
Serial.print("Sensor 2: ");Serial.print(event.light); Serial.println(" lux");
delay(500);
}
else
{
/* If event.light = 0 lux the sensor is probably saturated
and no reliable data could be generated! */
Serial.println("Sensor overload");
}
}
I have also tried the code found in this forum at: TSL2561 Luminosity Sensor - Programming Questions - Arduino Forum. However, I get the same results. It starts well and then the readings for pear-shaped.
My question is: is the code the problem?
or is it they way that the sensors are wired (no resistors, no level shifting, etc.), just plain in line.
I would really appreciate any help as I don't know where to look anymore on solving this problem.
Thanks in advance!
