I want to look to build a large 8x8 matrix using single colour 3w leds. The leds will be 3w 3.4v forward voltage and 700ma.
i want to be able to dim them and get them turn on independently.
Can you charlieplex and PWM? Trying to do this as cheap as possible. i have limited electronics experience so if anyone has any guides that i could scale up that would be great.
I have an arduino mega and uno which i could use. If anyone also has tried the new shields like Adafruit 16-Channel 12-bit PWM/Servo Driver - I2C interface - PCA9685 http://www.adafruit.com/products/815