Component: LED Array (LEDs): Difference between revisions

Revision as of 14:35, 13 July 2026

Author	Matrix TSL
Version	1.0
Category	LEDs

LED Array component

An array of LED indicators equally spaced and complete with labels to indicate their meaning. Embedded can be used to control an 8-bit port or up to 8 individual pins.

Component Source Code

Please click here to download the component source project: FC_Comp_Source_LED_Array_2dgi.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_LED_Array_2dgi.fcfx

Detailed description

No detailed description exists yet for this component

Examples

Example program which uses the point graph macro and loops to create a knight rider effect using the LED array.

LED KnightRider

Example program which reads an analogue value from an analogue input voltage and displays the reading in Binary on the LED array.

LED Count

LEDs can be wired either active high or active low. The LED Array components have a property allowing you to configure which LED type your using.

An active high LED will light when the microcontroller pin is outputting a logic 1 and be off when the microcontroller pin is outputting a logic 0 or in input mode.

An active low LED will light when the microcontroller pin is outputting a logic 0 and be off when the microcontroller pin is outputting a logic 1 or in input mode.

The series resistor can be on either side of the LED and acts to protect the LED from damage due to excess current. The value of resistor used can be changed based on the brightness of the LED and power consumption.

This LED Calculator tool is a good resource for calculating the correct LED series protection resistor.

LED Resistor Calculator Tool

Macro reference

AllOff

	AllOff
Turns off all elements
- VOID	Return

AllOn

	AllOn
Turns on all elements
- VOID	Return

BarGraph

	BarGraph
Turns on the first N elements of the array - for generating bar graph metes etc.
- BYTE	Length
How many items to light up.
- VOID	Return

LEDOff

	LEDOff
Turn off the selected led.
- BYTE	Index
Index of the LED to turn on.
- VOID	Return

LEDOn

	LEDOn
Turn on the selected LED.
- BYTE	Index
Index of the LED to turn on.
- VOID	Return

PointGraph

	PointGraph
Turns on the Indexed LED and turns all others off. Does nothing if the index is out of range.
- BYTE	Index
The LED to show.
- VOID	Return

WriteValue

	WriteValue
Write a number which is presented on the LEDs in binary.
- BYTE	Value
Provide a value to be written to the LEDs in binary
- VOID	Return

Property reference

	Properties
	Count
The number of LEDs in the array from 1 to 8.
	Connections
	Output Mode

	Port

	Polarity

	Simulation
	Switch layout

	Distance between LEDs

	Label colour

	Component Label

	Show Connection Label
If enabled, the pin designation will be shown, e.g. B0.
	Show Pin Value
Pin status of VCC or GND will be shown when enabled and simualtion is running.
	Appearance
	Shape

	Colour

	Style

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SteveT (talk | contribs)