#charlieplexing — Public Fediverse posts

And now a followup on how to actually update a row of LEDs efficiently, using bitplanes:
https://aykevl.nl/2026/01/bitplanes/

#EmbeddedSoftware #firmware #hardware #leds #Charlieplexing

Charlieplexing LEDs is actually really neat, if you understand how it works. It's basically just a LED matrix where you use the same pins on both sides of the matrix. I've written about it in my latest blog post:
https://aykevl.nl/2026/01/charlieplexing/

Charlieplexing is what allows my 36-LED earrings to have so many LEDs - I would have needed a bigger microcontroller without Charlieplexing.

#Charlieplexing #led #LEDMatrix

Track Your Circuits: A Locomotive PCB Badge https://hackaday.com/2025/04/18/track-your-circuits-a-locomotive-pcb-badge/ #charlieplexing #PCBHacks #ATmega32 #badge #train #pcb

Track Your Circuits: A Locomotive PCB Badge - This fun PCB from [Nick Brown] features a miniature railroad implemented with 0805... - https://hackaday.com/2025/04/18/track-your-circuits-a-locomotive-pcb-badge/ #charlieplexing #pcbhacks #atmega32 #badge #train #pcb

Baffle the Normies with This Binary Thermometer https://hackaday.com/2024/06/08/baffle-the-normies-with-this-binary-thermometer/ #charlieplexing #classichacks #thermometer #Digispark #LEDHacks #attiny85 #binary #dht11

Baffle the Normies with This Binary Thermometer https://hackaday.com/2024/06/08/baffle-the-normies-with-this-binary-thermometer/ #charlieplexing #classichacks #thermometer #Digispark #LEDHacks #attiny85 #binary #dht11

Baffle the Normies with This Binary Thermometer https://hackaday.com/2024/06/08/baffle-the-normies-with-this-binary-thermometer/ #charlieplexing #classichacks #thermometer #Digispark #LEDHacks #attiny85 #binary #dht11

Baffle the Normies with This Binary Thermometer https://hackaday.com/2024/06/08/baffle-the-normies-with-this-binary-thermometer/ #charlieplexing #classichacks #thermometer #Digispark #LEDHacks #attiny85 #binary #dht11

Baffle the Normies with This Binary Thermometer - We think it’s OK to admit that when someone puts a binary display on a project, it... - https://hackaday.com/2024/06/08/baffle-the-normies-with-this-binary-thermometer/ #charlieplexing #classichacks #thermometer #digispark #ledhacks #attiny85 #binary #dht11

Baffle the Normies with This Binary Thermometer - We think it’s OK to admit that when someone puts a binary display on a project, it... - https://hackaday.com/2024/06/08/baffle-the-normies-with-this-binary-thermometer/ #charlieplexing #classichacks #thermometer #digispark #ledhacks #attiny85 #binary #dht11

Baffle the Normies with This Binary Thermometer - We think it’s OK to admit that when someone puts a binary display on a project, it... - https://hackaday.com/2024/06/08/baffle-the-normies-with-this-binary-thermometer/ #charlieplexing #classichacks #thermometer #digispark #ledhacks #attiny85 #binary #dht11

Baffle the Normies with This Binary Thermometer - We think it’s OK to admit that when someone puts a binary display on a project, it... - https://hackaday.com/2024/06/08/baffle-the-normies-with-this-binary-thermometer/ #charlieplexing #classichacks #thermometer #digispark #ledhacks #attiny85 #binary #dht11

Baffle the Normies with This Binary Thermometer - We think it’s OK to admit that when someone puts a binary display on a project, it... - https://hackaday.com/2024/06/08/baffle-the-normies-with-this-binary-thermometer/ #charlieplexing #classichacks #thermometer #digispark #ledhacks #attiny85 #binary #dht11

Heart-Shaped Heartwarming Valentine’s Day Pendant - This is no ordinary heart-shaped PCB pendant project! To us, it’s also symbol repr... - https://hackaday.com/2022/01/24/heart-shaped-heartwarming-valentines-day-pendant/ #charlieplexing #steameducation #wearablehacks #pendant #pcbart