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==LED Array component==
==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==


==Component Source Code==
Please click here to download the component source project: [https://www.flowcode.co.uk/wiki/componentsource/FC_Comp_Source_LED_Array_2dgi.fcfx FC_Comp_Source_LED_Array_2dgi.fcfx]


Please click here for the component source code: [https://www.flowcode.co.uk/wikicopy/componentsource/FC_Comp_Source_LED_Array_2dgi.fcfx FC_Comp_Source_LED_Array_2dgi.fcfx]
Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_LED_Array_2dgi.fcfx FC_Comp_Source_LED_Array_2dgi.fcfx]


==Detailed description==
==Detailed description==
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''No detailed description exists yet for this component''


==Examples==




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''No detailed description exists yet for this component''
==Examples==


Each segment will require a current limiting resistor.


This LED Calculator tool is a good resource for calculating the correct LED series protection resistor.
Example program which uses the point graph macro and loops to create a knight rider effect using the LED array.


[https://www.digikey.co.uk/en/resources/conversion-calculators/conversion-calculator-led-series-resistor  LED Resistor Calculator Tool]
{{Fcfile|LED_KnightRider_2D.fcfx|LED KnightRider}}




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


===Simple Counter===
{{Fcfile|LED_Count_2D.fcfx|LED Count}}


This example counts up from 0 to 9 on the 7-segment display before wrapping back to 0 and starting again. When displaying odd numbers we light the decimal point segment.
{{Fcfile|7Seg_Test.fcfx|7Segment Display Example}}


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.


===Multiplexed Counter===
[[File:LED_Active.jpg]]


This next example counts up from 0 to 99 on two 7-segment displays before wrapping back to 0 and starting again. The two displays are driven using a technique called multiplexing. A timer interrupt is used to perform the multiplexing leaving our program free to perform other tasks. Each 7-segment display shares the same segment pin connections but has a unique common pin connection to allow each individual 7-segment display to display a unique value.
{{Fcfile|7Seg_Test2.fcfx|7Segment Multiplex}}


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.


===Stop Watch===


This next example uses a timer interrupt to multiplex between the displays and a second timer interrupt to count the passing of time allowing for accurate timings. Using four single 7-seg components we create a timer capable of monitoring time from 0.0 to 999.9 seconds in multiples of 100ms. The second timer interrupt flags to the main when the count value has changed allowing the heavier calculations to extract the digits from the counter to be done outside of the high speed interrupt routine and therefore maintain accurate timing.
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.


Switches connected to Port D allow for the timer to be started, stopped and reset.
{{Fcfile|7Seg_Test3.fcfx|7Segment Timer}}


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.


===Segment Control===


This example shows a method to display custom characters on 7-segment displays and also allows for numeric values to be displayed.
This LED Calculator tool is a good resource for calculating the correct LED series protection resistor.


{{Fcfile|7segCharDemo.fcfx|7Segment Character Demo}}
[https://www.digikey.co.uk/en/resources/conversion-calculators/conversion-calculator-led-series-resistor  LED Resistor Calculator Tool]


==Downloadable macro reference==
==Macro reference==


{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===AllOff===
{| class="mtx-class-macrotable wikitable"
|-
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" class="mtx-class-macrohead" | '''AllOff'''
|-
| colspan="2" | Turns off all elements 
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''BarGraph'''
|-
|-
| colspan="2" | Turns on the first N elements of the array - for generating bar graph metes etc. 
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
 
 
===AllOn===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" class="mtx-class-macrohead" | '''AllOn'''
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| colspan="2" | Turns on all elements 
| width="90%" | Length
|-
|-
| colspan="2" | How many items to light up. 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===BarGraph===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''LEDOn'''
| width="90%" class="mtx-class-macrohead" | '''BarGraph'''
|-
|-
| colspan="2" | Turn on the selected LED. 
| colspan="2" | Turns on the first N elements of the array - for generating bar graph metes etc. 
|-
|-
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Index
| width="90%" | Length
|-
|-
| colspan="2" | Index of the LED to turn on. 
| colspan="2" | How many items to light up. 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===LEDOff===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''AllOn'''
| width="90%" class="mtx-class-macrohead" | '''LEDOff'''
|-
|-
| colspan="2" | Turns on all elements 
| colspan="2" | Turn off the selected led. 
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Index
|-
|-
| colspan="2" | Index of the LED to turn on. 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===LEDOn===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''LEDOff'''
| width="90%" class="mtx-class-macrohead" | '''LEDOn'''
|-
|-
| colspan="2" | Turn off the selected led. 
| colspan="2" | Turn on the selected LED. 
|-
|-
|-
|-
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===PointGraph===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''PointGraph'''
| width="90%" class="mtx-class-macrohead" | '''PointGraph'''
|-
|-
| colspan="2" | Turns on the Indexed LED and turns all others off. Does nothing if the index is out of range. 
| colspan="2" | Turns on the Indexed LED and turns all others off. Does nothing if the index is out of range. 
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===WriteValue===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''WriteValue'''
| width="90%" class="mtx-class-macrohead" | '''WriteValue'''
|-
|-
| colspan="2" | Write a number which is presented on the LEDs in binary. 
| colspan="2" | Write a number which is presented on the LEDs in binary. 
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
|}
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''AllOff'''
|-
| colspan="2" | Turns off all elements 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}




==Property reference==
==Property reference==


{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" | [[File:Fc9-prop-icon.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-prop-icon.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Properties'''  
| width="90%" class="mtx-class-macrohead" | '''Properties'''  
|-
|-
|-
|-
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| colspan="2" | The number of LEDs in the array from 1 to 8. 
| colspan="2" | The number of LEDs in the array from 1 to 8. 
|-
|-
| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
| width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]]
| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | Connections
| width="90%" class="mtx-class-propfolder" | Connections
|-
|-
|-
|-
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| colspan="2" |  
| colspan="2" |  
|-
|-
| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
| width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]]
| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | Simulation
| width="90%" class="mtx-class-propfolder" | Simulation
|-
|-
|-
|-
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| colspan="2" | Pin status of VCC or GND will be shown when enabled and simualtion is running. 
| colspan="2" | Pin status of VCC or GND will be shown when enabled and simualtion is running. 
|-
|-
| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
| width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]]
| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | Appearance
| width="90%" class="mtx-class-propfolder" | Appearance
|-
|-
|-
|-

Latest revision as of 14:36, 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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