Max number of LEDs (MSP430)

[Justin Danger]

Hey all, I'm working on the MSP 430 and I'd like to know just how many LEDs I can independently control at one time. I've gotten to 3, using pins 1.1, 2.1, and 3.1. I'm sure there's a better way to do this, though. I'd like them independently controlled, as well- no using "1.1 + 2.1 = LED 4" or anything of the sort. How many LEDs have you guys used at once? 

[Joep Suijs]

google for Charlieplexing; 3 pins enable you to control 6 leds, 4 pins = 12 leds.

With additional hardware like i2c io chips or multiplexer, there is vitrually no limit (although speed might become an issue at some point).

Joep

2013/5/23 Justin Danger <jwb...@gmail.com>

Hey all, I'm working on the MSP 430 and I'd like to know just how many LEDs I can independently control at one time. I've gotten to 3, using pins 1.1, 2.1, and 3.1. I'm sure there's a better way to do this, though. I'd like them independently controlled, as well- no using "1.1 + 2.1 = LED 4" or anything of the sort. How many LEDs have you guys used at once? 

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[Peter Johansson]

You can put an LED on every IO pin if you want. Just be aware that
the msp430 is capable of far less current than most other
microcontrollers.

-p.