-- blinking

[keebOo]

Hi,
I'm looking for this in forum but I didn't find the answer:

- wich is the blinking velocity of leds?

I mean.. how much time from ON status to the next ON, and how much the led is OFF befere the next colum ON? (immagine the letter T, first row, always ON-ON-ON-ON-ON)

...to know how much space/time to write a slogan made of nn letters.

thanks.

[mtbf0]

the answer is in a comment in the firmware

Code: Select all

    A good POV frequency is around 400Hz

there is no off time between columns.

(immagine the letter T, first row, always ON-ON-ON-ON-ON)

think of the geometry of the thing. the data are organized as columns. (unless you want to print your 'T' sideways.)

[keebOo]

the answer is in a comment in the firmware
Code:
A good POV frequency is around 400Hz
there is no off time between columns.

..so case of 'T' (my example was to say exately you confirm: 5 columns set ON for first row), the led will be always ON?

or 1/400 sec ON and 1/400 sec OFF for each of 5 columns?

In photo example, shouldn't we see a line instead o 5 single dots?

thanks for patience.

[mtbf0]

..so case of 'T' (my example was to say exately you confirm: 5 columns set ON for first row), the led will be always ON?

or 1/400 sec ON and 1/400 sec OFF for each of 5 columns?

first column on 1/400s, second column on 1/400s, third column on 1/400s, ad nauseum...

In photo example, shouldn't we see a line instead o 5 single dots?

the top row of a 'T' will appear to be a line rather than a series of dots. data are output a column at a time, so first column will be, 10000000, second column, 10000000, third column, 11111110, fourth, 10000000, and fifth, 10000000. the top row will appear as an unbroken line, but there will most likely appear to be spaces between each row, depending on the lens on the particular leds you have.

check out the photo on the minipov3 product page. take a look at the code. there is a zip file with numerous examples on the download page.

[keebOo]

thanks for patience.

I look inside also in the firmware.