Please provide more information as strongly urged in the forum guidelines:
https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum/679966
In case you are Googling it, the spelling is "charlieplex".
Please provide more information as strongly urged in the forum guidelines:
https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum/679966
In case you are Googling it, the spelling is "charlieplex".