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glossary:glossary_c [2022/06/26 15:27] – [Charlieplexing] grovenorglossary:glossary_c [2022/06/27 12:23] (current) – Removed scaling so GIF will animate. WhiteCF
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 This is a method of multiplexing a few I/O pins of a microcontroller to control a large number of LEDs. It uses I/O pins that can be 3 state, either source or sink current or be open circuit (switched as input). LEDs are wired in reversed pairs. The LEDs are driven in a multiplexed way, rapidly by software. Only 1 LED is lit at any given time. 3 pins can drive 6 LEDs, 4 pins drive 12 LEDs, 5 pins drive 20 LEDs... See the MERG Journal [[https://merg.org.uk/merg_journal/download.php?fileid=35|March 2006]] p34 for additional information. This is a method of multiplexing a few I/O pins of a microcontroller to control a large number of LEDs. It uses I/O pins that can be 3 state, either source or sink current or be open circuit (switched as input). LEDs are wired in reversed pairs. The LEDs are driven in a multiplexed way, rapidly by software. Only 1 LED is lit at any given time. 3 pins can drive 6 LEDs, 4 pins drive 12 LEDs, 5 pins drive 20 LEDs... See the MERG Journal [[https://merg.org.uk/merg_journal/download.php?fileid=35|March 2006]] p34 for additional information.
-{{:glossary:charlieplexing_slowed.gif?400|charlieplex}}  +{{:glossary:charlieplexing_slowed.gif|charlieplex}}  
  
 ===== Circuit ===== ===== Circuit =====
glossary/glossary_c.txt · Last modified: 2022/06/27 12:23 by WhiteCF

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