0

Charlieplexing LEDs with an AVR ATmega328 (Arduino)

20-Charlieplexed-Leds-On-A-Pcb

Charlieplexing LEDs with an AVR ATmega328 (Arduino). Andy writes –

I’m working on a little timekeeper project that works similarly to those word clocks, but it will be wrist-mounted. I have to make this little guy tiny, so I’m going with all SMD and to light the 21 LEDs, I’m using a 5-pin Charlieplexing scheme. To give back to the community (and FWIW), I am writing up my understanding of and methods for implementing Charlieplexing on an Atmel ATmega328 AVR (or Arduino). This first part of the 2-part series goes over the concept of Charlieplexing. The second article will show my homemade quality control methods and Arduino and AVR C code. I hope someone finds the write-up useful!


Join 7,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython in 2018 – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — The many, many manufacturing processes listed on Wikipedia

Wearables — A bevel illusion

Electronics — Don’t float!

Biohacking — Optimizing the Warm Up

Python for Microcontrollers — CircuitPython 3.0.0 released!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.