Table LED Matrix, Weeks of debugging, column problems

[mekohler]

Yes, that's the price one has to pay, I 'm afraid. You cannot scan the matrix without a little flicker.

On the other hand, you may increase the current that LED's draw. Do you have the data sheets about that LEDs? Are they capable to withstand more than 20mA?

On a recent project I used Kingbright LED 5mm @ 20mA. They were really bright! They are 10000mcad and may replace car lamps (that's what I intend to do soon).

Ioannis

Here you go! http://superbrightleds.com/specs/r3_specs.htm

Looks like it's 50 mA, what would your solution be?

Just connected to a 9V battery with the appropriate resistors they are too bright to look at directly. In my table, however, that is not the case :[ . There isn't any way to account for the scanning/duty cycle?

Thanks to all of you for the help so far