3 ms·
> 7.2kB of data, which you can easily output many times per second I found that this adds up quick if you attempt variable brightness via PWM. At 1Khz this is
by foobarian 5y ago
> 7.2kB of data, which you can easily output many times per second
I found that this adds up quick if you attempt variable brightness via PWM. At 1Khz this is 7.2MB/s of data.
- jrockway 5y agoYeah, that's why FPGAs typically drive the matrix of dumb LEDs. But if you use APA102s, they remember their PWM setting, and a little chip inside each LED handles that. You just burst the data out over SPI, and the LEDs remain lit until you inform them of a new color to display. Expensive, but easy to use!