This module is based on the I2C light-to-digital converter TSL2561 to transform light intensity to a digital signal. Different from traditional analog light sensor, as Grove - Light Sensor, this digital module features a selectable light spectrum range due to its dual light sensitive diodes: infrared and full spectrum.
We can switch among three detection modes to take your readings. They are infrared mode, full spectrum and human visible mode. When running under the human visible mode, this sensor will give you readings just close to your eye feelings.
Features
Selectable detection modes
High resolution 16-Bit digital output at 400 kHz I2C Fast-Mode
Wide dynamic range: 0.1 - 40,000 LUX
Wide operating temperature range: -40°C to 85°C
Programmable interrupt function with User-Defined Upper and lower threshold settings
!!!Tip More details about Grove modules please refer to Grove System
Specifications
Items
Min
Typical
Max
Unit
Supply voltage, VDD
3.3
5
5.1
V
Operating temperature
-30
\
70
℃
SCL,SDA input low voltage
-0.5
\
0.8
V
SCL,SDA input high voltage
2.3
\
5.1
V
Platforms Supported
Hardware Overview
Register Map
The TSL2561 is controlled and monitored by sixteen registers (three are reserved) and a command register accessed through the serial interface. These registers provide for a variety of control functions and can be read to determine results of the ADC conversions. The register set is summarised as shown below.
Spectrum Response Curve
Two channels of the digital light sensor have different response characteristic. That's why you can choose its working mode by having both of them on or one of them off.
Open the code directly by the path: File -> Example ->Digital_Light_Sensor->Digital_Light_Sensor.
Or copy below code to IDE and upload to Arduino.
/*
* Digital_Light_Sensor.ino
* A library for TSL2561
*
* Copyright (c) 2012 seeed technology inc.
* Website : www.seeed.cc
* Author : zhangkun
* Create Time:
* Change Log :
*
* The MIT License (MIT)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <Wire.h>
#include <Digital_Light_TSL2561.h>
void setup()
{
Wire.begin();
Serial.begin(9600);
TSL2561.init();
}
void loop()
{
Serial.print("The Light value is: ");
Serial.println(TSL2561.readVisibleLux());
delay(1000);
}
Open the serial monitor to monitor the result.
With Raspberry Pi
Connection
First of all, we need to prepare the below stuffs:
