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@@ -90,9 +90,9 @@ Enter "setp arduino.DLED.1 TRUE" for example. This will set said Pin to HIGH or
 You can now use arduino pins in your hal file. 
 Pin Names are named arduino.[Pin Type]-[Pin Number]. Example:
 arduino.digital-in-32 for Pin 32 on an Arduino Mega2560
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+<p align="center">
 [![IMAGE ALT TEXT](https://img.youtube.com/vi/bjKfnLbsvgA/0.jpg)](https://www.youtube.com/watch?v=bjKfnLbsvgA "How to set up and test arduino-connector with LinuxCNC")
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+</p>
 
 # Configuration - HowTo
 In the Arduino .ino File you will see the configuration Parameters for each kind of Signal. 
@@ -181,6 +181,10 @@ If it doesn't, something is not working and this program will not work either. P
 
 In the Settings a cheap 4x4 Keyboard is used such as https://theartoftinkering.com/recommends/matrix-keyboard/ (referral link)
 
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+[![IMAGE ALT TEXT](https://img.youtube.com/vi/oOhzm7pbvXo/0.jpg)](https://www.youtube.com/watch?v=oOhzm7pbvXo "connect Matrix Keyboards to LinuxCNC using ArduinoC")
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 # Multiplexed LEDs
 Special mode for Multiplexed LEDs. This mode is experimental and implemented to support Matrix Keyboards with integrated Key LEDs. Please provide feedback if u use this feature.
 check out this thread on LinuxCNC Forum for context. https://forum.linuxcnc.org/show-your-stuff/49606-matrix-keyboard-controlling-linuxcnc