Component: Light Sensor (101020132) (Grove)
| Author | Matrix Ltd |
| Version | 1.0 (Release) |
| Category | Grove |
Contents
Light Sensor (101020132) component
The Light sensor module is a simple analogue photo transistor. Used to detect the intensity of the indoor light. The light sensor contains a photoresistor to detect light intensity. The resistance of the photoresistor decreases as light intensity increases. This means that the brighter the light is, the higher the voltage so that means the output value increases corresponding to the brightness of light.
Make sure it’s connected to the right channel in flowcode. You can use component macros to call the value it records as a byte, an integer, a string or even as a direct voltage, and there are also macros that allow you to take the average reading as a byte or an integer.
Examples
No additional examples
Downloadable macro reference
GetString
Reads the ADC as a direct voltage and returns as as tring
Parameters
- This macro has no parameters
Return value
GetAverageByte
Function call to read the ADC as a byte average sample over time
Parameters
- BYTE NumSamples
- BYTE DelayUs
- Number of micro seconds in between taking each sample
Return value
GetAverageInt
Function call to read the ADC as a full width average sample over time
Parameters
- BYTE NumSamples
- BYTE DelayUs
- Number of micro seconds in between taking each sample
Return value
GetVoltage
Reads the ADC as a direct voltage
Parameters
- This macro has no parameters
Return value
GetInt
Blocking call to read the ADC at full bit depth
Parameters
- This macro has no parameters
Return value
GetByte
Blocking call to read the ADC as a byte
Parameters
- This macro has no parameters
Return value
Simulation macro reference
This component does not contain any simulation macros
Property reference
Tang Color
This property is of type Color picker and can be referenced with the variable name tang_col.
Colour of the moving part of the slider.
Marker Color
This property is of type Color picker and can be referenced with the variable name mark_col.
Colour of the marker line across the slider tang.
Scope Traces
This property is of type True or false and can be referenced with the variable name ScopeTraces.
Selects if the scope traces are automatically generated or not
Channel
This property is of type Single analog pin and can be referenced with the variable name channel.
Analogue input channel - which pin is the analogue input conected to?
VRef voltage
This property is of type Signed integer and can be referenced with the variable name vrefvol.
Used by the GetVoltage or GetString component macros to take an ADC reading and convert it into a Voltage.
+VRef voltage x 10mV
Default 500 = 5.0V
VRef option
This property is of type Fixed list of ints and can be referenced with the variable name vrefop.
Defines what is used as the ADC maximum reference. ADC Range = GND to VRef Voltage.
VDD - Defines the microcontrollers power supply pin as the max reference,
VREF+ Pin - Dedicated pin on the microcontroller to allow for a variable reference voltage.
Conversion speed
This property is of type Fixed list of ints and can be referenced with the variable name convspd.
Clock setting to select how fast the ADC peripheral will perform an ADC conversion.
The FRC setting is based on a RC time base and so will vary with temperature and pressure.
Other settings are generally based on divisions of the master clock.
Aquisition cycles
This property is of type Signed integer and can be referenced with the variable name actime.
Number of micro seconds to wait for the ACD input to charge before starting the analogue sample.
Bit Depth
This property is of type Signed integer and can be referenced with the variable name bits.
Maximum number of digital bits the ADC can sample.
8 bit = ADC range 0 - 255
10 bit = ADC range 0 - 1023
12 bit = ADC range 0 - 4095
