Component: Ambient Light (BH1750FVI) (Light): Difference between revisions
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Revision as of 14:20, 13 July 2026
| Author | Matrix TSL |
| Version | 1.0 |
| Category | Light |
Ambient Light component
A small PCB surface mount ambient light sensor with a I2C bus interface. Spectral responsibility is approximately human eye response. Wide range and High resolution. ( 1 - 65535 lx )
Component Source Code
Please click here to download the component source project: FC_Comp_Source_AmbientLight_BH1750FVI.fcfx
Please click here to view the component source code (Beta): FC_Comp_Source_AmbientLight_BH1750FVI.fcfx
Detailed description
No detailed description exists yet for this component
Examples
No additional examples
Macro reference
ChangeMeasurementTime
|
ChangeMeasurementTime |
| Adjusts the measurement result to counteract influence of the optical window. | |
 - BYTE
|
Sensitvity |
| Range: 31-254 / Default: 69 | |
 - VOID
|
Return |
ContinuousMeasurement
|
|
ContinuousMeasurement |
| Powers up and starts the continous measurement mode. Delays in between measurements readings must be provided by the user, | |
| - BYTE
|
Resolution |
| 0=1lx (120ms) / 1=0.5lx (120ms) / 2 = 4lx (16ms) | |
| - VOID
|
Return |
Initialise
|
|
Initialise |
| Stes up the I2C bus and initialises the termperature sensor ready for use. | |
| - VOID
|
Return |
OneTimeMeasurement
|
|
OneTimeMeasurement |
| Powers up and starts a single measurement before returning to power down mode. Waits for the measurement to be ready and returns the value. | |
| - BYTE
|
Resolution |
| 0=1lx (120ms) / 1=0.5lx (120ms) / 2 = 4lx (16ms) | |
 - UINT
|
Return |
PowerDown
|
|
PowerDown |
| Power Down the Device | |
| - VOID
|
Return |
ReadMeasurement
|
|
ReadMeasurement |
| Reads data from the Light Sensor as a 16-bit value. | |
| - UINT
|
Return |
ResetMeasurement
|
|
ResetMeasurement |
| Resets the device measurement register, Must be in the powered up state to do this. | |
| - VOID
|
Return |
Property reference
|
Properties |
|
I2C Properties |
|
Slave Address |
|
|
Channel |
| Channel selection | |
|
SDA |
| Pin used for SDA (data signal) | |
|
|
SCL |
| Pin used for SCL (clock signal) | |
|
|
DVI Pin |
| Pin used to reset the device. | |
|
|
Baud Select |
| Baud rate option selector | |
|
Baud Rate |
| Baud rate to be used | |
|
Stop Delay |
| On older microcontroller devices there is a potential for the I2C hardware channel to lock up if there is not a 10ms delay between an I2C stop event and the next I2C start event. Most modern microcontrollers will not have a problem so this property can be disabled to speed up the I2C communications. | |
|
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Simulation |
|
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Simulate Comms |
| Allows the simulation data to come from the panel GUI or relayed via an injector component. | |